QVariant QDeclarativeBasePositioner::itemChange(GraphicsItemChange change,
const QVariant &value)
{
Q_D(QDeclarativeBasePositioner);
if (change == ItemChildAddedChange){
QGraphicsItem* item = value.value<QGraphicsItem*>();
QDeclarativeItem* child = 0;
if(item)
child = qobject_cast<QDeclarativeItem*>(item->toGraphicsObject());
if (child)
prePositioning();
} else if (change == ItemChildRemovedChange) {
QGraphicsItem* item = value.value<QGraphicsItem*>();
QDeclarativeItem* child = 0;
if(item)
child = qobject_cast<QDeclarativeItem*>(item->toGraphicsObject());
if (child) {
QDeclarativeBasePositioner::PositionedItem posItem(child);
int idx = positionedItems.find(posItem);
if (idx >= 0) {
d->unwatchChanges(child);
positionedItems.remove(idx);
}
prePositioning();
}
}
return QDeclarativeItem::itemChange(change, value);
}
void QDeclarativeBasePositioner::componentComplete()
{
Q_D(QDeclarativeBasePositioner);
QDeclarativeItem::componentComplete();
positionedItems.reserve(d->QGraphicsItemPrivate::children.count());
prePositioning();
}
void QDeclarativeGrid::setFlow(Flow flow)
{
if (m_flow != flow) {
m_flow = flow;
prePositioning();
emit flowChanged();
}
}
void QDeclarativeGrid::setRows(const int rows)
{
if (rows == m_rows)
return;
m_rows = rows;
prePositioning();
emit rowsChanged();
}
void QDeclarativeGrid::setColumns(const int columns)
{
if (columns == m_columns)
return;
m_columns = columns;
prePositioning();
emit columnsChanged();
}
void QDeclarativeGrid::setLayoutDirection(Qt::LayoutDirection layoutDirection)
{
if (m_layoutDirection != layoutDirection) {
m_layoutDirection = layoutDirection;
prePositioning();
emit layoutDirectionChanged();
}
}
void QDeclarativeFlow::setFlow(Flow flow)
{
Q_D(QDeclarativeFlow);
if (d->flow != flow) {
d->flow = flow;
prePositioning();
emit flowChanged();
}
}
void QDeclarativeBasePositioner::setSpacing(int s)
{
Q_D(QDeclarativeBasePositioner);
if (s==d->spacing)
return;
d->spacing = s;
prePositioning();
emit spacingChanged();
}
void QDeclarativeFlow::setLayoutDirection(Qt::LayoutDirection layoutDirection)
{
Q_D(QDeclarativeFlow);
if (d->layoutDirection != layoutDirection) {
d->layoutDirection = layoutDirection;
prePositioning();
emit layoutDirectionChanged();
}
}
void QDeclarativeGrid::setLayoutDirection(Qt::LayoutDirection layoutDirection)
{
QDeclarativeBasePositionerPrivate *d = static_cast<QDeclarativeBasePositionerPrivate*>(QDeclarativeBasePositionerPrivate::get(this));
if (d->layoutDirection != layoutDirection) {
d->layoutDirection = layoutDirection;
// For RTL layout the positioning changes when the width changes.
if (d->layoutDirection == Qt::RightToLeft)
d->addItemChangeListener(d, QDeclarativeItemPrivate::Geometry);
else
d->removeItemChangeListener(d, QDeclarativeItemPrivate::Geometry);
prePositioning();
emit layoutDirectionChanged();;
}
}
void QDeclarativeBasePositioner::graphicsWidgetGeometryChanged()
{
prePositioning();
}