qulonglong WritingSystems::get(FcPattern *pat) const
{
qulonglong ws(0);
FcLangSet *langset(0);
if (FcResultMatch==FcPatternGetLangSet(pat, FC_LANG, 0, &langset))
{
for (int i = 0; constLanguageForWritingSystem[i].lang; ++i)
if (FcLangDifferentLang!=FcLangSetHasLang(langset, constLanguageForWritingSystem[i].lang))
ws|=toBit(constLanguageForWritingSystem[i].ws);
}
else
ws|=toBit(QFontDatabase::Other);
FcCharSet *cs(0);
if (FcResultMatch == FcPatternGetCharSet(pat, FC_CHARSET, 0, &cs))
{
// some languages are not supported by FontConfig, we rather check the
// charset to detect these
for (int i = 0; QFontDatabase::Any!=sampleCharForWritingSystem[i].ws; ++i)
if (FcCharSetHasChar(cs, sampleCharForWritingSystem[i].ch))
ws|=toBit(sampleCharForWritingSystem[i].ws);
}
return ws;
}
static AliasStrength strengthOfFirstAlias(const FcPattern& original)
{
// Ideally there would exist a call like
// FcResult FcPatternIsWeak(pattern, object, id, FcBool* isWeak);
//
// However, there is no such call and as of Fc 2.11.0 even FcPatternEquals ignores the weak bit.
// Currently, the only reliable way of finding the weak bit is by its effect on matching.
// The weak bit only affects the matching of FC_FAMILY and FC_POSTSCRIPT_NAME object values.
// A element with the weak bit is scored after FC_LANG, without the weak bit is scored before.
// Note that the weak bit is stored on the element, not on the value it holds.
FcValue value;
FcResult result = FcPatternGet(&original, FC_FAMILY, 0, &value);
if (result != FcResultMatch)
return AliasStrength::Done;
RefPtr<FcPattern> pattern = adoptRef(FcPatternDuplicate(&original));
FcBool hasMultipleFamilies = true;
while (hasMultipleFamilies)
hasMultipleFamilies = FcPatternRemove(pattern.get(), FC_FAMILY, 1);
// Create a font set with two patterns.
// 1. the same FC_FAMILY as pattern and a lang object with only 'nomatchlang'.
// 2. a different FC_FAMILY from pattern and a lang object with only 'matchlang'.
FcUniquePtr<FcFontSet> fontSet(FcFontSetCreate());
FcUniquePtr<FcLangSet> strongLangSet(FcLangSetCreate());
FcLangSetAdd(strongLangSet.get(), reinterpret_cast<const FcChar8*>("nomatchlang"));
// Ownership of this FcPattern will be transferred with FcFontSetAdd.
FcPattern* strong = FcPatternDuplicate(pattern.get());
FcPatternAddLangSet(strong, FC_LANG, strongLangSet.get());
FcUniquePtr<FcLangSet> weakLangSet(FcLangSetCreate());
FcLangSetAdd(weakLangSet.get(), reinterpret_cast<const FcChar8*>("matchlang"));
// Ownership of this FcPattern will be transferred via FcFontSetAdd.
FcPattern* weak = FcPatternCreate();
FcPatternAddString(weak, FC_FAMILY, reinterpret_cast<const FcChar8*>("nomatchstring"));
FcPatternAddLangSet(weak, FC_LANG, weakLangSet.get());
FcFontSetAdd(fontSet.get(), strong);
FcFontSetAdd(fontSet.get(), weak);
// Add 'matchlang' to the copy of the pattern.
FcPatternAddLangSet(pattern.get(), FC_LANG, weakLangSet.get());
// Run a match against the copy of the pattern.
// If the first element was weak, then we should match the pattern with 'matchlang'.
// If the first element was strong, then we should match the pattern with 'nomatchlang'.
// Note that this config is only used for FcFontRenderPrepare, which we don't even want.
// However, there appears to be no way to match/sort without it.
RefPtr<FcConfig> config = adoptRef(FcConfigCreate());
FcFontSet* fontSets[1] = { fontSet.get() };
RefPtr<FcPattern> match = adoptRef(FcFontSetMatch(config.get(), fontSets, 1, pattern.get(), &result));
FcLangSet* matchLangSet;
FcPatternGetLangSet(match.get(), FC_LANG, 0, &matchLangSet);
return FcLangEqual == FcLangSetHasLang(matchLangSet, reinterpret_cast<const FcChar8*>("matchlang"))
? AliasStrength::Weak : AliasStrength::Strong;
}
static double
FcCompareLang (FcValue *v1, FcValue *v2)
{
FcLangResult result;
FcValue value1 = FcValueCanonicalize(v1), value2 = FcValueCanonicalize(v2);
switch (value1.type) {
case FcTypeLangSet:
switch (value2.type) {
case FcTypeLangSet:
result = FcLangSetCompare (value1.u.l, value2.u.l);
break;
case FcTypeString:
result = FcLangSetHasLang (value1.u.l,
value2.u.s);
break;
default:
return -1.0;
}
break;
case FcTypeString:
switch (value2.type) {
case FcTypeLangSet:
result = FcLangSetHasLang (value2.u.l, value1.u.s);
break;
case FcTypeString:
result = FcLangCompare (value1.u.s,
value2.u.s);
break;
default:
return -1.0;
}
break;
default:
return -1.0;
}
switch (result) {
case FcLangEqual:
return 0;
case FcLangDifferentCountry:
return 1;
case FcLangDifferentLang:
default:
return 2;
}
}
static double
FcCompareLang (char *object, FcValue value1, FcValue value2)
{
FcLangResult result;
switch (value1.type) {
case FcTypeLangSet:
switch (value2.type) {
case FcTypeLangSet:
result = FcLangSetCompare (value1.u.l, value2.u.l);
break;
case FcTypeString:
result = FcLangSetHasLang (value1.u.l, value2.u.s);
break;
default:
return -1.0;
}
break;
case FcTypeString:
switch (value2.type) {
case FcTypeLangSet:
result = FcLangSetHasLang (value2.u.l, value1.u.s);
break;
case FcTypeString:
result = FcLangCompare (value1.u.s, value2.u.s);
break;
default:
return -1.0;
}
break;
default:
return -1.0;
}
switch (result) {
case FcLangEqual:
return 0;
case FcLangDifferentCountry:
return 1;
case FcLangDifferentLang:
default:
return 2;
}
}
FcStrSet *fcinfo_languages(const FcPattern *filter)
{
FcObjectSet *objectset;
FcFontSet *fontset;
FcLangSet *union_langset;
FcStrSet *result;
int f;
FcInit();
objectset = FcObjectSetBuild(FC_LANG, NULL);
fontset = FcFontList(NULL, (FcPattern *)filter, objectset);
FcObjectSetDestroy(objectset);
union_langset = FcLangSetCreate();
for (f = 0; f < fontset->nfont; f++)
{
FcLangSet *langset;
FcStrList *strlist;
FcChar8 *lang;
if (FcPatternGetLangSet(fontset->fonts[f], FC_LANG, 0, &langset)
!= FcResultMatch)
continue;
if (! langset)
continue;
strlist = FcStrListCreate(FcLangSetGetLangs(langset));
while ((lang = FcStrListNext(strlist)))
if (FcLangSetHasLang(union_langset, lang))
FcLangSetAdd(union_langset, FcStrCopy(lang));
}
result = FcLangSetGetLangs(union_langset);
FcFontSetDestroy(fontset);
FcLangSetDestroy(union_langset);
return result;
}
void QFontconfigDatabase::populateFontDatabase()
{
FcFontSet *fonts;
QString familyName;
FcChar8 *value = 0;
int weight_value;
int slant_value;
int spacing_value;
FcChar8 *file_value;
int indexValue;
FcChar8 *foundry_value;
FcChar8 *style_value;
FcBool scalable;
FcBool antialias;
{
FcObjectSet *os = FcObjectSetCreate();
FcPattern *pattern = FcPatternCreate();
const char *properties [] = {
FC_FAMILY, FC_STYLE, FC_WEIGHT, FC_SLANT,
FC_SPACING, FC_FILE, FC_INDEX,
FC_LANG, FC_CHARSET, FC_FOUNDRY, FC_SCALABLE, FC_PIXEL_SIZE, FC_WEIGHT,
FC_WIDTH,
#if FC_VERSION >= 20297
FC_CAPABILITY,
#endif
(const char *)0
};
const char **p = properties;
while (*p) {
FcObjectSetAdd(os, *p);
++p;
}
fonts = FcFontList(0, pattern, os);
FcObjectSetDestroy(os);
FcPatternDestroy(pattern);
}
for (int i = 0; i < fonts->nfont; i++) {
if (FcPatternGetString(fonts->fonts[i], FC_FAMILY, 0, &value) != FcResultMatch)
continue;
// capitalize(value);
familyName = QString::fromUtf8((const char *)value);
slant_value = FC_SLANT_ROMAN;
weight_value = FC_WEIGHT_REGULAR;
spacing_value = FC_PROPORTIONAL;
file_value = 0;
indexValue = 0;
scalable = FcTrue;
if (FcPatternGetInteger (fonts->fonts[i], FC_SLANT, 0, &slant_value) != FcResultMatch)
slant_value = FC_SLANT_ROMAN;
if (FcPatternGetInteger (fonts->fonts[i], FC_WEIGHT, 0, &weight_value) != FcResultMatch)
weight_value = FC_WEIGHT_REGULAR;
if (FcPatternGetInteger (fonts->fonts[i], FC_SPACING, 0, &spacing_value) != FcResultMatch)
spacing_value = FC_PROPORTIONAL;
if (FcPatternGetString (fonts->fonts[i], FC_FILE, 0, &file_value) != FcResultMatch)
file_value = 0;
if (FcPatternGetInteger (fonts->fonts[i], FC_INDEX, 0, &indexValue) != FcResultMatch)
indexValue = 0;
if (FcPatternGetBool(fonts->fonts[i], FC_SCALABLE, 0, &scalable) != FcResultMatch)
scalable = FcTrue;
if (FcPatternGetString(fonts->fonts[i], FC_FOUNDRY, 0, &foundry_value) != FcResultMatch)
foundry_value = 0;
if (FcPatternGetString(fonts->fonts[i], FC_STYLE, 0, &style_value) != FcResultMatch)
style_value = 0;
if(FcPatternGetBool(fonts->fonts[i],FC_ANTIALIAS,0,&antialias) != FcResultMatch)
antialias = true;
QSupportedWritingSystems writingSystems;
FcLangSet *langset = 0;
FcResult res = FcPatternGetLangSet(fonts->fonts[i], FC_LANG, 0, &langset);
if (res == FcResultMatch) {
bool hasLang = false;
for (int j = 1; j < QFontDatabase::WritingSystemsCount; ++j) {
const FcChar8 *lang = (const FcChar8*) languageForWritingSystem[j];
if (lang) {
FcLangResult langRes = FcLangSetHasLang(langset, lang);
if (langRes != FcLangDifferentLang) {
writingSystems.setSupported(QFontDatabase::WritingSystem(j));
hasLang = true;
}
}
}
if (!hasLang)
// none of our known languages, add it to the other set
writingSystems.setSupported(QFontDatabase::Other);
} else {
// we set Other to supported for symbol fonts. It makes no
// sense to merge these with other ones, as they are
// special in a way.
writingSystems.setSupported(QFontDatabase::Other);
}
#if FC_VERSION >= 20297
for (int j = 1; j < QFontDatabase::WritingSystemsCount; ++j) {
if (writingSystems.supported(QFontDatabase::WritingSystem(j))
&& requiresOpenType(j) && openType[j]) {
FcChar8 *cap;
res = FcPatternGetString (fonts->fonts[i], FC_CAPABILITY, 0, &cap);
if (res != FcResultMatch || !strstr((const char *)cap, openType[j]))
writingSystems.setSupported(QFontDatabase::WritingSystem(j),false);
}
}
#endif
FontFile *fontFile = new FontFile;
fontFile->fileName = QLatin1String((const char *)file_value);
fontFile->indexValue = indexValue;
QFont::Style style = (slant_value == FC_SLANT_ITALIC)
? QFont::StyleItalic
: ((slant_value == FC_SLANT_OBLIQUE)
? QFont::StyleOblique
: QFont::StyleNormal);
QFont::Weight weight = QFont::Weight(getFCWeight(weight_value));
double pixel_size = 0;
if (!scalable) {
int width = 100;
FcPatternGetInteger (fonts->fonts[i], FC_WIDTH, 0, &width);
FcPatternGetDouble (fonts->fonts[i], FC_PIXEL_SIZE, 0, &pixel_size);
}
bool fixedPitch = spacing_value >= FC_MONO;
QFont::Stretch stretch = QFont::Unstretched;
QString styleName = style_value ? QString::fromUtf8((const char *) style_value) : QString();
QPlatformFontDatabase::registerFont(familyName,styleName,QLatin1String((const char *)foundry_value),weight,style,stretch,antialias,scalable,pixel_size,fixedPitch,writingSystems,fontFile);
// qDebug() << familyName << (const char *)foundry_value << weight << style << &writingSystems << scalable << true << pixel_size;
for (int k = 1; FcPatternGetString(fonts->fonts[i], FC_FAMILY, k, &value) == FcResultMatch; ++k)
QPlatformFontDatabase::registerAliasToFontFamily(familyName, QString::fromUtf8((const char *)value));
}
FcFontSetDestroy (fonts);
struct FcDefaultFont {
const char *qtname;
const char *rawname;
bool fixed;
};
const FcDefaultFont defaults[] = {
{ "Serif", "serif", false },
{ "Sans Serif", "sans-serif", false },
{ "Monospace", "monospace", true },
{ 0, 0, false }
};
const FcDefaultFont *f = defaults;
// aliases only make sense for 'common', not for any of the specials
QSupportedWritingSystems ws;
ws.setSupported(QFontDatabase::Latin);
while (f->qtname) {
QString familyQtName = QString::fromLatin1(f->qtname);
registerFont(familyQtName,QString(),QString(),QFont::Normal,QFont::StyleNormal,QFont::Unstretched,true,true,0,f->fixed,ws,0);
registerFont(familyQtName,QString(),QString(),QFont::Normal,QFont::StyleItalic,QFont::Unstretched,true,true,0,f->fixed,ws,0);
registerFont(familyQtName,QString(),QString(),QFont::Normal,QFont::StyleOblique,QFont::Unstretched,true,true,0,f->fixed,ws,0);
++f;
}
//Lighthouse has very lazy population of the font db. We want it to be initialized when
//QApplication is constructed, so that the population procedure can do something like this to
//set the default font
// const FcDefaultFont *s = defaults;
// QFont font("Sans Serif");
// font.setPointSize(9);
// QApplication::setFont(font);
}
static void populateFromPattern(FcPattern *pattern)
{
QString familyName;
FcChar8 *value = 0;
int weight_value;
int slant_value;
int spacing_value;
int width_value;
FcChar8 *file_value;
int indexValue;
FcChar8 *foundry_value;
FcChar8 *style_value;
FcBool scalable;
FcBool antialias;
if (FcPatternGetString(pattern, FC_FAMILY, 0, &value) != FcResultMatch)
return;
familyName = QString::fromUtf8((const char *)value);
slant_value = FC_SLANT_ROMAN;
weight_value = FC_WEIGHT_REGULAR;
spacing_value = FC_PROPORTIONAL;
file_value = 0;
indexValue = 0;
scalable = FcTrue;
if (FcPatternGetInteger(pattern, FC_SLANT, 0, &slant_value) != FcResultMatch)
slant_value = FC_SLANT_ROMAN;
if (FcPatternGetInteger(pattern, FC_WEIGHT, 0, &weight_value) != FcResultMatch)
weight_value = FC_WEIGHT_REGULAR;
if (FcPatternGetInteger(pattern, FC_WIDTH, 0, &width_value) != FcResultMatch)
width_value = FC_WIDTH_NORMAL;
if (FcPatternGetInteger(pattern, FC_SPACING, 0, &spacing_value) != FcResultMatch)
spacing_value = FC_PROPORTIONAL;
if (FcPatternGetString(pattern, FC_FILE, 0, &file_value) != FcResultMatch)
file_value = 0;
if (FcPatternGetInteger(pattern, FC_INDEX, 0, &indexValue) != FcResultMatch)
indexValue = 0;
if (FcPatternGetBool(pattern, FC_SCALABLE, 0, &scalable) != FcResultMatch)
scalable = FcTrue;
if (FcPatternGetString(pattern, FC_FOUNDRY, 0, &foundry_value) != FcResultMatch)
foundry_value = 0;
if (FcPatternGetString(pattern, FC_STYLE, 0, &style_value) != FcResultMatch)
style_value = 0;
if (FcPatternGetBool(pattern,FC_ANTIALIAS,0,&antialias) != FcResultMatch)
antialias = true;
QSupportedWritingSystems writingSystems;
FcLangSet *langset = 0;
FcResult res = FcPatternGetLangSet(pattern, FC_LANG, 0, &langset);
if (res == FcResultMatch) {
bool hasLang = false;
for (int j = 1; j < QFontDatabase::WritingSystemsCount; ++j) {
const FcChar8 *lang = (const FcChar8*) languageForWritingSystem[j];
if (lang) {
FcLangResult langRes = FcLangSetHasLang(langset, lang);
if (langRes != FcLangDifferentLang) {
writingSystems.setSupported(QFontDatabase::WritingSystem(j));
hasLang = true;
}
}
}
if (!hasLang)
// none of our known languages, add it to the other set
writingSystems.setSupported(QFontDatabase::Other);
} else {
// we set Other to supported for symbol fonts. It makes no
// sense to merge these with other ones, as they are
// special in a way.
writingSystems.setSupported(QFontDatabase::Other);
}
#if FC_VERSION >= 20297
for (int j = 1; j < QFontDatabase::WritingSystemsCount; ++j) {
if (writingSystems.supported(QFontDatabase::WritingSystem(j))
&& requiresOpenType(j) && openType[j]) {
FcChar8 *cap;
res = FcPatternGetString (pattern, FC_CAPABILITY, 0, &cap);
if (res != FcResultMatch || !strstr((const char *)cap, openType[j]))
writingSystems.setSupported(QFontDatabase::WritingSystem(j),false);
}
}
#endif
FontFile *fontFile = new FontFile;
fontFile->fileName = QString::fromLocal8Bit((const char *)file_value);
fontFile->indexValue = indexValue;
QFont::Style style = (slant_value == FC_SLANT_ITALIC)
? QFont::StyleItalic
: ((slant_value == FC_SLANT_OBLIQUE)
? QFont::StyleOblique
: QFont::StyleNormal);
// Note: weight should really be an int but registerFont incorrectly uses an enum
QFont::Weight weight = QFont::Weight(weightFromFcWeight(weight_value));
double pixel_size = 0;
if (!scalable)
FcPatternGetDouble (pattern, FC_PIXEL_SIZE, 0, &pixel_size);
bool fixedPitch = spacing_value >= FC_MONO;
// Note: stretch should really be an int but registerFont incorrectly uses an enum
QFont::Stretch stretch = QFont::Stretch(stretchFromFcWidth(width_value));
QString styleName = style_value ? QString::fromUtf8((const char *) style_value) : QString();
QPlatformFontDatabase::registerFont(familyName,styleName,QLatin1String((const char *)foundry_value),weight,style,stretch,antialias,scalable,pixel_size,fixedPitch,writingSystems,fontFile);
// qDebug() << familyName << (const char *)foundry_value << weight << style << &writingSystems << scalable << true << pixel_size;
for (int k = 1; FcPatternGetString(pattern, FC_FAMILY, k, &value) == FcResultMatch; ++k)
QPlatformFontDatabase::registerAliasToFontFamily(familyName, QString::fromUtf8((const char *)value));
}