improve behavior of Xref item (must show or not the power contact)

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3042 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/qetgraphicsitem/crossrefitem.cpp

@@ -105,6 +105,7 @@ void CrossRefItem::updateLabel() {
 
 	autoPos();
 	update();
+	checkMustShow();
 }
 
 /**
@@ -467,3 +468,41 @@ void CrossRefItem::AddExtraInfo(QPainter &painter) {
 		painter.restore();
 	}
 }
+
+/**
+ * @brief CrossRefItem::checkMustShow
+ * Check the propertie of this Xref for know if we
+ * must to be show or not
+ */
+void CrossRefItem::checkMustShow() {
+
+	//We always show Xref when is displayed has contact
+	if (m_properties.displayHas() == XRefProperties::Contacts) {
+		this->show();
+		return;
+	}
+
+	//if Xref is display has cross and we must to don't show power contact, check it
+	else if (m_properties.displayHas() == XRefProperties::Cross && !m_properties.showPowerContact()) {
+		bool power = false;
+		foreach (Element *elmt, m_element->linkedElements()) {
+			// contact checked isn't power, show this xref and return;
+			if (elmt->kindInformations()["type"].toString() != "power") {
+				this->show();
+				return;
+			} else {
+				power = true;
+			}
+		}
+		if (power) {
+			this->hide();
+			return;
+		}
+	}
+
+	//By default, show this Xref
+	else {
+		this->show();
+		return;
+	}
+}

sources/qetgraphicsitem/crossrefitem.h

@@ -72,6 +72,7 @@ class CrossRefItem : public QGraphicsObject
 	void drawContact	 (QPainter &painter, int flags, QString str = QString());
 	void fillCrossRef	 (QPainter &painter);
 	void AddExtraInfo	 (QPainter &painter);
+	void checkMustShow	 ();
 
 	//Attributes
 	private:

sources/qetgraphicsitem/masterelement.cpp

@@ -54,8 +54,6 @@ void MasterElement::linkToElement(Element *elmt) {
 		connected_elements << elmt;
 		elmt->linkToElement(this);
 
-		if (elmt->kindInformations()["type"].toString() == "power" && !diagram()->defaultXRefProperties().showPowerContact()) return;
-
 		if (!cri_) {
 				cri_ = new CrossRefItem(this); //create cross ref item if not yet
 				diagram()->addItem(cri_);
@@ -89,24 +87,10 @@ void MasterElement::unlinkElement(Element *elmt) {
 		connected_elements.removeOne(elmt);
 		elmt->unlinkElement(this);
 
-		if (cri_) {
 		//update the graphics cross ref
 		disconnect(elmt, SIGNAL(positionChange(QPointF)), cri_, SLOT(updateLabel()));
 
-			bool delete_cri = true;
+		if (linkedElements().isEmpty()) {
-
-			//if power contact isn't show, make sure they are only power contacts linked
-			//or nothing befor remove cri_
-			if (!diagram()->defaultXRefProperties().showPowerContact()) {
-				foreach(Element *elmt, linkedElements())
-					if (elmt->kindInformations()["type"].toString() != "power") delete_cri = false;
-			}
-			//else only make sur list is empty
-			else {
-				if (!linkedElements().isEmpty()) delete_cri = false;
-			}
-
-			if (delete_cri) {
 			diagram()->removeItem(cri_);
 			delete cri_;
 			cri_ = 0;
@@ -116,7 +100,6 @@ void MasterElement::unlinkElement(Element *elmt) {
 		}
 	}
 }
-}
 
 /**
  * @brief MasterElement::updateLabel