QDomDocument StyleNode::openStyleDoc(const QString& path)
{
QDomDocument doc = QDomDocument(XML_DOM_TYPE);
QFile file(path);
if ( !file.open(QIODevice::ReadOnly) ) throw VisualizationException("Could not open style file " + file.fileName() + ".");
if ( !doc.setContent(&file) || doc.isNull() )
{
file.close();
throw VisualizationException("Reading of the XML structure of file " + file.fileName() + " failed.");
}
file.close();
return doc;
}
QString StyleNode::getProperty(QStringList path)
{
QDomElement e = getElement(path);
if (e.isNull())
throw VisualizationException("Could not find the style property '"+ path.join("/") + "'.");
return e.firstChild().nodeValue();
}
void StyleLoader::load(const QString& propertyName, double& value)
{
bool ok = true;
value = getProperty(propertyName).toDouble(&ok);
if ( !ok ) throw VisualizationException("Could not read double value property '" + propertyName + "'");
}
void SvgShapeStyle::load(StyleLoader& sl)
{
ShapeStyle::load(sl);
sl.load("filename", filename_);
sl.load("topContentMarginFraction", topContentMarginFraction_);
sl.load("bottomContentMarginFraction", bottomContentMarginFraction_);
sl.load("leftContentMarginFraction", leftContentMarginFraction_);
sl.load("rightContentMarginFraction", rightContentMarginFraction_);
if (filename_.isEmpty()) return;
if (!renderer_.load(filename_)) throw VisualizationException("Could not read SVG shape: " + filename_);
}
StyleNode::StyleNode(StyleNode* parent_, const QString& prototypeName, const QString& currentFolder) :
parent(parent_)
{
folder = currentFolder + "/" + prototypeName; // Try relative address
if (!QFile::exists(folder)) folder = baseFolder + "/" + prototypeName; // Try absolute path (rooted at the styles folder)
if (!QFile::exists(folder)) throw VisualizationException("Could not find the prototype style " + prototypeName);
QString fileName = QFileInfo(folder).fileName();
folder = QFileInfo(folder).path();
doc = openStyleDoc(folder + "/" + fileName);
elem = doc.documentElement();
init();
}
ShapeStyle* Shape::createNewShapeStyle(const QString& shapeName)
{
if (shapeStyleConstructors.contains(shapeName)) return shapeStyleConstructors.value(shapeName)();
else throw VisualizationException("Trying to create a new shape style for an unregistered shape type " + shapeName);
}
Shape* Shape::createNewShape(const QString& shapeName, Item* parent)
{
if (shapeConstructors.contains(shapeName)) return shapeConstructors.value(shapeName)(parent);
else throw VisualizationException("Trying to create a new shape for an unregistered type " + shapeName);
}