static
QFontEngine *loadEngine(int script, const QFontDef &request,
QtFontFamily *family, QtFontFoundry *foundry,
QtFontStyle *style, QtFontSize *size)
{
QFontEngine *engine = loadSingleEngine(script, request, foundry, style, size);
//make sure that the db has all fallback families
if (engine
&& !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol ) {
if (family && !family->askedForFallback) {
QFont::Style fontStyle = QFont::Style(style->key.style);
QFont::StyleHint styleHint = QFont::StyleHint(request.styleHint);
if (styleHint == QFont::AnyStyle && request.fixedPitch)
styleHint = QFont::TypeWriter;
family->fallbackFamilies = fallbackFamilies(family->name,fontStyle,styleHint,QUnicodeTables::Script(script));
family->askedForFallback = true;
}
QStringList fallbacks = privateDb()->fallbackFamilies;
if (family && !family->fallbackFamilies.isEmpty())
fallbacks = family->fallbackFamilies;
engine = new QFontEngineMultiQPA(engine, script, fallbacks);
}
return engine;
}
static
QFontEngine *loadEngine(int script, const QFontDef &request,
QtFontFamily *family, QtFontFoundry *foundry,
QtFontStyle *style, QtFontSize *size)
{
QFontEngine *engine = loadSingleEngine(script, request, foundry, style, size);
//make sure that the db has all fallback families
if (engine && engine->type() != QFontEngine::Multi
&& !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol ) {
if (family && !family->askedForFallback) {
QFont::Style fontStyle = QFont::Style(style->key.style);
QFont::StyleHint styleHint = QFont::StyleHint(request.styleHint);
if (styleHint == QFont::AnyStyle && request.fixedPitch)
styleHint = QFont::TypeWriter;
family->fallbackFamilies = fallbackFamilies(family->name,fontStyle,styleHint,QUnicodeTables::Script(script));
family->askedForFallback = true;
}
QStringList fallbacks = privateDb()->fallbackFamilies;
if (family && !family->fallbackFamilies.isEmpty())
fallbacks = family->fallbackFamilies;
engine = new QFontEngineMultiQPA(engine, script, fallbacks);
// Cache Multi font engine as well in case we got the FT single
// font engine when we are actually looking for a Multi one
QFontCache::Key key(request, script, 1);
QFontCache::instance()->instance()->insertEngine(key, engine);
}
return engine;
}
/*!
\internal
*/
QFontEngine *
QFontDatabase::findFont(int script, const QFontPrivate *fp,
const QFontDef &request)
{
QMutexLocker locker(fontDatabaseMutex());
const int force_encoding_id = -1;
if (!privateDb()->count)
initializeDb();
QFontEngine *engine;
QFontCache::Key key(request, script);
engine = QFontCache::instance()->findEngine(key);
if (engine) {
qDebug() << "Cache hit level 1";
return engine;
}
QString family_name, foundry_name;
parseFontName(request.family, foundry_name, family_name);
if (qt_enable_test_font && request.family == QLatin1String("__Qt__Box__Engine__")) {
engine =new QTestFontEngine(request.pixelSize);
engine->fontDef = request;
}
QtFontDesc desc;
match(script, request, family_name, foundry_name, force_encoding_id, &desc);
if (desc.family != 0 && desc.foundry != 0 && desc.style != 0) {
engine = loadEngine(script, request, desc.family, desc.foundry, desc.style, desc.size);
} else {
FM_DEBUG(" NO MATCH FOUND\n");
}
if (engine) {
initFontDef(desc, request, &engine->fontDef);
if (fp) {
QFontDef def = request;
if (def.family.isEmpty()) {
def.family = fp->request.family;
def.family = def.family.left(def.family.indexOf(QLatin1Char(',')));
}
}
}
if (!engine) {
if (!request.family.isEmpty()) {
QStringList fallbacks = fallbackFamilies(request.family,QFont::Style(request.style),QFont::StyleHint(request.styleHint),QUnicodeTables::Script(script));
for (int i = 0; i < fallbacks.size(); i++) {
QFontDef def = request;
def.family = fallbacks.at(i);
QFontCache::Key key(def,script);
engine = QFontCache::instance()->findEngine(key);
if (!engine) {
QtFontDesc desc;
match(script, def, def.family, QLatin1String(""), 0, &desc);
if (desc.family == 0 && desc.foundry == 0 && desc.style == 0) {
continue;
}
engine = loadEngine(script, def, desc.family, desc.foundry, desc.style, desc.size);
if (engine) {
initFontDef(desc, def, &engine->fontDef);
break;
}
}
}
}
if (!engine)
engine = new QFontEngineBox(request.pixelSize);
FM_DEBUG("returning box engine");
}
if (fp && fp->dpi > 0) {
engine->fontDef.pointSize = qreal(double((engine->fontDef.pixelSize * 72) / fp->dpi));
} else {
engine->fontDef.pointSize = request.pointSize;
}
return engine;
}
