bool QmlAnchors::instanceHasAnchor(AnchorLine::Type sourceAnchorLine) const
{
const QString propertyName = anchorPropertyName(sourceAnchorLine);
if (sourceAnchorLine & AnchorLine::Fill)
return qmlItemNode().nodeInstance().hasAnchor(propertyName) || qmlItemNode().nodeInstance().hasAnchor("anchors.fill");
if (sourceAnchorLine & AnchorLine::Center)
return qmlItemNode().nodeInstance().hasAnchor(propertyName) || qmlItemNode().nodeInstance().hasAnchor("anchors.centerIn");
return qmlItemNode().nodeInstance().hasAnchor(propertyName);
}
void QmlAnchors::setAnchor(AnchorLine::Type sourceAnchorLine,
const QmlItemNode &targetQmlItemNode,
AnchorLine::Type targetAnchorLine)
{
RewriterTransaction transaction = qmlItemNode().qmlModelView()->beginRewriterTransaction();
if (qmlItemNode().isInBaseState()) {
if ((qmlItemNode().nodeInstance().hasAnchor("anchors.fill") && (sourceAnchorLine & AnchorLine::Fill))
|| ((qmlItemNode().nodeInstance().hasAnchor("anchors.centerIn") && (sourceAnchorLine & AnchorLine::Center)))) {
removeAnchor(sourceAnchorLine);
}
const QString propertyName = anchorPropertyName(sourceAnchorLine);
QString targetExpression = targetQmlItemNode.modelNode().validId();
if (targetQmlItemNode.modelNode() == qmlItemNode().modelNode().parentProperty().parentModelNode())
targetExpression = "parent";
targetExpression = targetExpression + QLatin1Char('.') + lineTypeToString(targetAnchorLine);
qmlItemNode().modelNode().bindingProperty(propertyName).setExpression(targetExpression);
}
}
void QmlAnchors::removeAnchor(AnchorLine::Type sourceAnchorLine)
{
RewriterTransaction transaction = qmlItemNode().qmlModelView()->beginRewriterTransaction();
if (qmlItemNode().isInBaseState()) {
const QString propertyName = anchorPropertyName(sourceAnchorLine);
if (qmlItemNode().nodeInstance().hasAnchor("anchors.fill") && (sourceAnchorLine & AnchorLine::Fill)) {
qmlItemNode().modelNode().removeProperty("anchors.fill");
qmlItemNode().modelNode().bindingProperty("anchors.top").setExpression("parent.top");
qmlItemNode().modelNode().bindingProperty("anchors.left").setExpression("parent.left");
qmlItemNode().modelNode().bindingProperty("anchors.bottom").setExpression("parent.bottom");
qmlItemNode().modelNode().bindingProperty("anchors.right").setExpression("parent.right");
} else if (qmlItemNode().nodeInstance().hasAnchor("anchors.centerIn") && (sourceAnchorLine & AnchorLine::Center)) {
qmlItemNode().modelNode().removeProperty("anchors.centerIn");
qmlItemNode().modelNode().bindingProperty("anchors.horizontalCenter").setExpression("parent.horizontalCenter");
qmlItemNode().modelNode().bindingProperty("anchors.verticalCenter").setExpression("parent.verticalCenter");
}
qmlItemNode().modelNode().removeProperty(propertyName);
}
}
AnchorLine QmlAnchors::instanceAnchor(AnchorLine::Type sourceAnchorLine) const
{
QPair<QString, NodeInstance> targetAnchorLinePair;
if (qmlItemNode().nodeInstance().hasAnchor("anchors.fill") && (sourceAnchorLine & AnchorLine::Fill)) {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor("anchors.fill");
targetAnchorLinePair.first = lineTypeToString(sourceAnchorLine);
} else if (qmlItemNode().nodeInstance().hasAnchor("anchors.centerIn") && (sourceAnchorLine & AnchorLine::Center)) {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor("anchors.centerIn");
targetAnchorLinePair.first = lineTypeToString(sourceAnchorLine);
} else {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor(anchorPropertyName(sourceAnchorLine));
}
AnchorLine::Type targetAnchorLine = propertyNameToLineType(targetAnchorLinePair.first);
if (targetAnchorLine == AnchorLine::Invalid )
return AnchorLine();
Q_ASSERT(targetAnchorLinePair.second.isValid());
return AnchorLine(QmlItemNode(qmlItemNode().nodeForInstance(targetAnchorLinePair.second)), targetAnchorLine);
}
AnchorLine QmlAnchors::instanceAnchor(AnchorLine::Type sourceAnchorLine) const
{
QPair<QString, qint32> targetAnchorLinePair;
if (qmlItemNode().nodeInstance().hasAnchor("anchors.fill") && (sourceAnchorLine & AnchorLine::Fill)) {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor("anchors.fill");
targetAnchorLinePair.first = lineTypeToString(sourceAnchorLine); // TODO: looks wrong
} else if (qmlItemNode().nodeInstance().hasAnchor("anchors.centerIn") && (sourceAnchorLine & AnchorLine::Center)) {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor("anchors.centerIn");
targetAnchorLinePair.first = lineTypeToString(sourceAnchorLine);
} else {
targetAnchorLinePair = qmlItemNode().nodeInstance().anchor(anchorPropertyName(sourceAnchorLine));
}
AnchorLine::Type targetAnchorLine = propertyNameToLineType(targetAnchorLinePair.first);
if (targetAnchorLine == AnchorLine::Invalid )
return AnchorLine();
if (targetAnchorLinePair.second < 0) //there might be no node instance for the parent
return AnchorLine();
return AnchorLine(QmlItemNode(qmlItemNode().nodeForInstance(qmlItemNode().qmlModelView()->nodeInstanceView()->instanceForId(targetAnchorLinePair.second))), targetAnchorLine);
}
