PLC Fix scroll sync, data persistence, font defaults, copy/paste, and layout fixes

sources/qetgraphicsitem/element.cpp

@@ -16,6 +16,7 @@
 	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "element.h"
+#include "../qetapp.h"
 #include "../qetproject.h"
 #include "../PropertiesEditor/propertieseditordialog.h"
 #include "../autoNum/assignvariables.h"
@@ -860,6 +861,15 @@ bool Element::fromXml(QDomElement &e,
 		}
 	}
 
+		//Load PLC master data override from diagram XML
+	if (m_data.m_type == ElementData::Master &&
+		m_data.m_master_type == ElementData::PLC)
+	{
+		auto xml_plc = e.firstChildElement(QStringLiteral("plcMasterData"));
+		if (!xml_plc.isNull())
+			m_data.plcMasterDataFromXml(xml_plc);
+	}
+
 	//We must block the update of the alignment when loading the information
 	//otherwise the pos of the text will not be the same as it was at save time.
 	for(DynamicElementTextItem *deti : m_dynamic_text_list)
@@ -993,6 +1003,15 @@ QDomElement Element::toXml(
 		element.appendChild(properties);
 	}
 
+		//Save PLC master data override for elements on diagram
+	if (m_data.m_type == ElementData::Master &&
+		m_data.m_master_type == ElementData::PLC)
+	{
+		auto xml_plc = m_data.plcMasterDataToXml(document);
+		if (!xml_plc.isNull())
+			element.appendChild(xml_plc);
+	}
+
 	//Dynamic texts
 	QDomElement dyn_text = document.createElement(QStringLiteral("dynamic_texts"));
 	for (DynamicElementTextItem *deti : m_dynamic_text_list)
@@ -1876,12 +1895,12 @@ void Element::drawPlcTable(QPainter *painter)
 	// Fonts
 	QFont header_font = plc_data.headerFont;
 	if (header_font.family().isEmpty()) {
-		header_font = painter->font();
+		header_font = QETApp::diagramTextsFont();
 		header_font.setBold(true);
 	}
 	QFont cell_font = plc_data.cellFont;
 	if (cell_font.family().isEmpty()) {
-		cell_font = painter->font();
+		cell_font = QETApp::diagramTextsFont();
 	}
 
 	for (const QPointF &pos : positions) {