QString QSGDistanceFieldGlyphCacheManager::fontKey(const QRawFont &font)
{
QFontEngine *fe = QRawFontPrivate::get(font)->fontEngine;
if (!fe->faceId().filename.isEmpty()) {
QByteArray keyName = fe->faceId().filename;
if (font.style() != QFont::StyleNormal)
keyName += QByteArray(" I");
if (font.weight() != QFont::Normal)
keyName += ' ' + QByteArray::number(font.weight());
keyName += QByteArray(" DF");
return QString::fromUtf8(keyName);
} else {
return QString::fromLatin1("%1_%2_%3_%4")
.arg(font.familyName())
.arg(font.styleName())
.arg(font.weight())
.arg(font.style());
}
}
/*!
Factory function for scene graph backends of the distance-field glyph cache.
*/
QSGDistanceFieldGlyphCache *QSGContext::distanceFieldGlyphCache(const QRawFont &font)
{
Q_D(QSGContext);
if (!d->distanceFieldCacheManager)
d->distanceFieldCacheManager = new QSGDistanceFieldGlyphCacheManager;
QSGDistanceFieldGlyphCache *cache = d->distanceFieldCacheManager->cache(font);
if (!cache) {
QPlatformIntegration *platformIntegration = QGuiApplicationPrivate::platformIntegration();
if (platformIntegration != 0
&& platformIntegration->hasCapability(QPlatformIntegration::SharedGraphicsCache)) {
QFontEngine *fe = QRawFontPrivate::get(font)->fontEngine;
if (!fe->faceId().filename.isEmpty()) {
QByteArray keyName = fe->faceId().filename;
if (font.style() != QFont::StyleNormal)
keyName += QByteArray(" I");
if (font.weight() != QFont::Normal)
keyName += ' ' + QByteArray::number(font.weight());
keyName += QByteArray(" DF");
QPlatformSharedGraphicsCache *sharedGraphicsCache =
platformIntegration->createPlatformSharedGraphicsCache(keyName);
if (sharedGraphicsCache != 0) {
sharedGraphicsCache->ensureCacheInitialized(keyName,
QPlatformSharedGraphicsCache::OpenGLTexture,
QPlatformSharedGraphicsCache::Alpha8);
cache = new QSGSharedDistanceFieldGlyphCache(keyName,
sharedGraphicsCache,
d->distanceFieldCacheManager,
glContext(),
font);
}
}
}
if (!cache)
cache = new QSGDefaultDistanceFieldGlyphCache(d->distanceFieldCacheManager, glContext(), font);
d->distanceFieldCacheManager->insertCache(font, cache);
}
return cache;
}
QByteArray QPF::generate(const QFont &font, int options, const QList<CharacterRange> &ranges, QString *originalFontFile)
{
QTextEngine engine("Test", font);
engine.itemize();
engine.shape(0);
QFontEngine *fontEngine = engine.fontEngine(engine.layoutData->items[0]);
if (fontEngine->type() == QFontEngine::Multi)
fontEngine = static_cast<QFontEngineMulti *>(fontEngine)->engine(0);
if (originalFontFile)
*originalFontFile = QFile::decodeName(fontEngine->faceId().filename);
return generate(fontEngine, options, ranges);
}
