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slave element: when linked to master, label is replaced by the label of master, and show the position of the master

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git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2946 bfdf4180-ca20-0410-9c96-a3a8aa849046
This commit is contained in:
blacksun
2014-03-21 14:40:33 +00:00
parent a35c2dc022
commit 0109a5d188
7 changed files with 95 additions and 5 deletions
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48
sources/qetgraphicsitem/slaveelement.cpp
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@@ -16,6 +16,9 @@
along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
*/
#include "slaveelement.h"
#include "diagramposition.h"
#include "qetapp.h"
#include "elementtextitem.h"
/**
* @brief SlaveElement::SlaveElement
@@ -28,6 +31,7 @@
SlaveElement::SlaveElement(const ElementsLocation &location, QGraphicsItem *qgi, Diagram *s, int *state) :
CustomElement(location, qgi, s, state)
{
Xref_item = NULL;
link_type_ = Slave;
}
@@ -50,6 +54,9 @@ void SlaveElement::linkToElement(Element *elmt) {
if (elmt->linkType() == Master && !connected_elements.contains(elmt)) {
if(!isFree()) unlinkAllElements();
connected_elements << elmt;
updateLabel();
connect(elmt, SIGNAL(positionChange(QPointF)), this, SLOT(updateLabel()));
connect(elmt, SIGNAL(elementInfoChange(DiagramContext)), this, SLOT(updateLabel()));
elmt->linkToElement(this);
}
}
@@ -76,6 +83,47 @@ void SlaveElement::unlinkElement(Element *elmt) {
//Ensure elmt is linked to this element
if (connected_elements.contains(elmt)) {
connected_elements.removeOne(elmt);
disconnect(elmt, SIGNAL(positionChange(QPointF)), this, SLOT(updateLabel()));
disconnect(elmt, SIGNAL(elementInfoChange(DiagramContext)), this, SLOT(updateLabel()));
delete Xref_item; Xref_item = NULL;
updateLabel();
elmt->unlinkElement(this);
}
}
/**
* @brief SlaveElement::updateLabel
* update the label (tagged with label) of this element.
* If this element is connected to a master,
* the label show the string tagged by "label" of the master
* and add a qgraphicstextitem for show the position of the master
*/
void SlaveElement::updateLabel() {
QString label("_");
QString Xreflabel;
bool no_editable = false;
//must be linked to set the label of master
if (linkedElements().count()) {
no_editable = true;
Element *elmt = linkedElements().first();
label = elmt -> elementInformations()["label"].toString();
Xreflabel = "(";
Xreflabel += QString::number(elmt->diagram()->folioIndex()+1);
Xreflabel += "-";
Xreflabel += elmt->diagram() -> convertPosition(elmt -> scenePos()).toString();
Xreflabel += ")";
}
// set the new label
ElementTextItem *eti = setTaggedText("label", label, no_editable);
if (eti && !isFree()) {
if (Xref_item) Xref_item -> setPlainText(Xreflabel);
else {
Xref_item = new QGraphicsTextItem(Xreflabel, eti);
Xref_item -> setFont(QETApp::diagramTextsFont(5));
Xref_item -> setPos(eti -> boundingRect().bottomLeft());
}
}
}