KoFilterEffectStack * FilterEffectResource::toFilterStack() const
{
KoFilterEffectStack * filterStack = new KoFilterEffectStack();
if (!filterStack)
return 0;
QByteArray data = m_data.toByteArray();
KoXmlDocument doc;
doc.setContent(data);
KoXmlElement e = doc.documentElement();
// only allow obect bounding box units
if (e.hasAttribute("filterUnits") && e.attribute("filterUnits") != "objectBoundingBox")
return 0;
if (e.attribute("primitiveUnits") != "objectBoundingBox")
return 0;
// parse filter region rectangle
QRectF filterRegion;
filterRegion.setX(fromPercentage(e.attribute("x", "-0.1")));
filterRegion.setY(fromPercentage(e.attribute("y", "-0.1")));
filterRegion.setWidth(fromPercentage(e.attribute("width", "1.2")));
filterRegion.setHeight(fromPercentage(e.attribute("height", "1.2")));
filterStack->setClipRect(filterRegion);
KoFilterEffectLoadingContext context(QString(""));
KoFilterEffectRegistry * registry = KoFilterEffectRegistry::instance();
// create the filter effects and add them to the shape
for (KoXmlNode n = e.firstChild(); !n.isNull(); n = n.nextSibling()) {
KoXmlElement primitive = n.toElement();
KoFilterEffect * filterEffect = registry->createFilterEffectFromXml(primitive, context);
if (!filterEffect) {
qWarning() << "filter effect" << primitive.tagName() << "is not implemented yet";
continue;
}
// parse subregion
qreal x = fromPercentage(primitive.attribute("x", "0"));
qreal y = fromPercentage(primitive.attribute("y", "0"));
qreal w = fromPercentage(primitive.attribute("width", "1"));
qreal h = fromPercentage(primitive.attribute("height", "1"));
QRectF subRegion(QPointF(x, y), QSizeF(w, h));
if (primitive.hasAttribute("in"))
filterEffect->setInput(0, primitive.attribute("in"));
if (primitive.hasAttribute("result"))
filterEffect->setOutput(primitive.attribute("result"));
filterEffect->setFilterRect(subRegion);
filterStack->appendFilterEffect(filterEffect);
}
return filterStack;
}
PictureShape::PictureShape()
: KoFrameShape(KoXmlNS::draw, "image")
, m_imageCollection(0)
, m_mirrorMode(MirrorNone)
, m_colorMode(Standard)
, m_proxy(this)
{
setKeepAspectRatio(true);
KoFilterEffectStack * effectStack = new KoFilterEffectStack();
effectStack->setClipRect(QRectF(0, 0, 1, 1));
setFilterEffectStack(effectStack);
}
void SvgStyleWriter::saveSvgEffects(KoShape *shape, SvgSavingContext &context)
{
KoFilterEffectStack * filterStack = shape->filterEffectStack();
if (!filterStack)
return;
QList<KoFilterEffect*> filterEffects = filterStack->filterEffects();
if (!filterEffects.count())
return;
const QString uid = context.createUID("filter");
filterStack->save(context.styleWriter(), uid);
context.shapeWriter().addAttribute("filter", "url(#" + uid + ")");
}