-add class for store Xref properties

-add widget for edit it
-make link betwen QET -> QETproject -> Diagram, for transmit the xrefproperties
-xrefpropertie can save/load to xml and setting.
-XRefItem don't use the properties yet


git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2983 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/properties/xrefproperties.cpp

@@ -0,0 +1,74 @@
+/*
+	Copyright 2006-2014 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "xrefproperties.h"
+
+/**
+ * @brief XRefProperties::XRefProperties
+ * Default Constructor
+ */
+XRefProperties::XRefProperties()
+{
+}
+
+/**
+ * @brief XRefProperties::toSettings
+ * Save to settings
+ * @param settings: QSettings to use
+ * @param prefix: prefix before properties name
+ */
+void XRefProperties::toSettings(QSettings &settings, const QString prefix) const {
+	settings.setValue(prefix + "showpowerctc", m_show_power_ctc);
+}
+
+/**
+ * @brief XRefProperties::fromSettings
+ * load from settings
+ * @param settings: QSettings to use
+ * @param prefix: prefix before properties name
+ */
+void XRefProperties::fromSettings(const QSettings &settings, const QString prefix) {
+	m_show_power_ctc = settings.value(prefix + "showpowerctc", false).toBool();
+}
+
+/**
+ * @brief XRefProperties::toXml
+ * Save to xml
+ * @param xml_element: QDomElement to use for saving
+ */
+void XRefProperties::toXml(QDomElement &xml_element) const {
+	xml_element.setAttribute("showpowerctc", m_show_power_ctc? "true" : "fasle");
+}
+
+/**
+ * @brief XRefProperties::fromXml
+ * Load from xml
+ * @param xml_element: QDomElement to use for load
+ */
+void XRefProperties::fromXml(const QDomElement &xml_element) {
+	m_show_power_ctc = xml_element.attribute("showpowerctc")  == "true";
+}
+
+bool XRefProperties::operator ==(const XRefProperties &xrp) const{
+	return (m_show_power_ctc == xrp.m_show_power_ctc);
+}
+
+bool XRefProperties::operator !=(const XRefProperties &xrp) const {
+	return (! (*this == xrp));
+}
+
+