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delay only in the case the item to be visible is a qgraphicswidget, so we can guard the temp pointer with a weak one

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BUG:219475

svn path=/trunk/KDE/kdelibs/; revision=1064800
This commit is contained in:
Marco Martin 2009-12-21 20:29:08 +00:00
parent 3a27e22612
commit 923d772a85
1 changed files with 18 additions and 5 deletions
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23
widgets/scrollwidget.cpp
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@ -268,7 +268,7 @@ public:
(widget.data()->pos() + delta).toPoint());
}
void makeItemVisible()
void makeItemVisible(QGraphicsItem *itemToBeVisible)
{
if (!widget) {
return;
@ -280,6 +280,13 @@ public:
makeRectVisible();
}
void makeItemVisible()
{
if (widgetToBeVisible) {
makeItemVisible(widgetToBeVisible.data());
}
}
void cleanupDragHandles(QObject *destroyed)
{
dragHandles.remove(static_cast<QGraphicsWidget *>(destroyed));
@ -307,7 +314,7 @@ public:
ScrollBar *horizontalScrollBar;
Qt::ScrollBarPolicy horizontalScrollBarPolicy;
QString styleSheet;
QGraphicsItem *itemToBeVisible;
QWeakPointer<QGraphicsWidget> widgetToBeVisible;
QRectF rectToBeVisible;
QPointF dragHandleClicked;
QSet<QGraphicsWidget *>dragHandles;
@ -415,10 +422,16 @@ void ScrollWidget::ensureItemVisible(QGraphicsItem *item)
parentOfItem = parentOfItem->parentItem();
}
d->itemToBeVisible = item;
//since we can't ensure it'll stay alive we can delay only if it's a qgraphicswidget
QGraphicsWidget *widget = qgraphicsitem_cast<QGraphicsWidget *>(item);
if (widget) {
d->widgetToBeVisible = widget;
// We need to wait for the parent item to resize...
QTimer::singleShot(0, this, SLOT(makeItemVisible()));
// We need to wait for the parent item to resize...
QTimer::singleShot(0, this, SLOT(makeItemVisible()));
} else {
d->makeItemVisible(item);
}
}
void ScrollWidget::registerAsDragHandle(QGraphicsWidget *item)