alecs/plasma-framework
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

check for null widget

Browse Source 
bound the passed rect to the widget bounding rect

svn path=/trunk/KDE/kdelibs/; revision=1027836
This commit is contained in:
Marco Martin 2009-09-24 21:27:40 +00:00
parent 80f675df0d
commit b7768c774c
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
widgets/scrollwidget.cpp
View File

@ -266,8 +266,15 @@ Qt::ScrollBarPolicy ScrollWidget::verticalScrollBarPolicy() const
void ScrollWidget::ensureRectVisible(const QRectF &rect) void ScrollWidget::ensureRectVisible(const QRectF &rect)
{ {
if (!d->widget) {
return;
}
QRectF viewRect = d->scrollingWidget->boundingRect(); QRectF viewRect = d->scrollingWidget->boundingRect();
QRectF mappedRect = d->widget->mapToItem(d->scrollingWidget, rect).boundingRect(); //ensure the rect is not outside the widget bounding rect
QRectF mappedRect = QRectF(QPointF(qBound((qreal)0.0, rect.x(), d->widget->size().width()-rect.width()),
qBound((qreal)0.0, rect.y(), d->widget->size().height()-rect.height())), rect.size());
mappedRect = d->widget->mapToItem(d->scrollingWidget, mappedRect).boundingRect();
if (viewRect.contains(mappedRect)) { if (viewRect.contains(mappedRect)) {
return; return;
} }