void flowwidget::LoadXML(std::istream &data) {
QXmlSimpleReader qxsr;
qxsr.setContentHandler(XMLHandlr);
qxsr.setErrorHandler(XMLHandlr);
QIODevice* iodev = new IOStreamBridge(data);
if (qxsr.parse(QXmlInputSource(iodev))) {
std::cerr << "[FlowWidget] Recentering nodes and adjusting scale." << std::endl;
double GenMinimumX = std::numeric_limits<double>::max();
double GenExtremeX = std::numeric_limits<double>::min();
double GenMinimumY = std::numeric_limits<double>::max();
double GenExtremeY = std::numeric_limits<double>::min();
std::for_each(XMLHandlr->OrphanNodes.begin(), XMLHandlr->OrphanNodes.end(),
[&](std::pair<std::string, FlowNode> nodepair) {
NodeSize ns = getNodeSize(QFont("sans-serif", BaseFontSize*nodepair.second.FontSizeMult), QFont("sans-serif", BaseFontSize*nodepair.second.FontSizeMult*1.5), nodepair.second);
if (nodepair.second.CenterPosX - double(ns.Width/2) < GenMinimumX)
GenMinimumX = nodepair.second.CenterPosX - double(ns.Width/2);
if (nodepair.second.CenterPosX + double(ns.Width/2) > GenExtremeX)
GenExtremeX = nodepair.second.CenterPosX + double(ns.Width/2);
if (nodepair.second.CenterPosY - double(ns.Height/2) < GenMinimumY)
GenMinimumY = nodepair.second.CenterPosY - double(ns.Height/2);
if (nodepair.second.CenterPosY + double(ns.Height/2) > GenExtremeY)
GenExtremeY = nodepair.second.CenterPosY + double(ns.Height/2);
});
QLineF XLine(QPointF(GenMinimumX, 0), QPointF(GenExtremeX, 0));
QLineF YLine(QPointF(GenMinimumY, 0), QPointF(GenExtremeY, 0));
if (XLine.length() > YLine.length()) {
PermaScale = 1.0/XLine.length();
} else {
PermaScale = 1.0/YLine.length();
}
double NewCenterX = (GenMinimumX + GenExtremeX) / 2.0;
double NewCenterY = (GenMinimumY + GenExtremeY) / 2.0;
std::cerr << "[FlowWidget] Nodes are off by X " << -NewCenterX << ", Y " << -NewCenterY <<
", deducted from XMin " << GenMinimumX << ", XMax " << GenExtremeX <<
", YMin " << GenMinimumY << ", YMax" << GenExtremeY << std::endl;
for (auto itr = XMLHandlr->OrphanNodes.begin(); itr != XMLHandlr->OrphanNodes.end(); itr++) {
itr->second.CenterPosX -= NewCenterX;
itr->second.CenterPosY -= NewCenterY;
}
std::cerr << "[FlowWidget] Recentered nodes. Ready!" << std::endl;
} else {
std::cerr << "[FlowWidget] Error loading XML." << std::endl;
}
}
XLine operator*( const XTransform &tx, const XLine &line )
{
return XLine( tx * line.position(), tx.linear() * line.direction(), XLine::PointAndDirection );
}
