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Factor an overlay widget out of progress indicator

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The principle of having a widget on top of all other children of the
same parent, for the purpose of painting an overlay, is generic.

Change-Id: I6d3ee89cc51354988fedcc40340bb45a065db607
Reviewed-by: David Schulz <david.schulz@qt.io>
This commit is contained in:
Eike Ziller
2020-03-12 15:26:33 +01:00
parent c10ae65f24
commit 2307c61c95
7 changed files with 144 additions and 54 deletions
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49
src/libs/utils/progressindicator.cpp
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@@ -220,9 +220,11 @@ void ProgressIndicatorPainter::nextAnimationStep()
\sa setIndicatorSize
*/
ProgressIndicator::ProgressIndicator(ProgressIndicatorSize size, QWidget *parent)
: QWidget(parent), m_paint(size)
: OverlayWidget(parent)
, m_paint(size)
{
setAttribute(Qt::WA_TransparentForMouseEvents);
setPaintFunction(
[this](QWidget *w, QPainter &p, QPaintEvent *) { m_paint.paint(p, w->rect()); });
m_paint.setUpdateCallback([this]() { update(); });
updateGeometry();
}
@@ -248,29 +250,6 @@ QSize ProgressIndicator::sizeHint() const
return m_paint.size();
}
/*!
Makes the indicator a child of \a parent, automatically centering on it,
and adapting to size changes.
*/
void ProgressIndicator::attachToWidget(QWidget *parent)
{
if (parentWidget())
parentWidget()->removeEventFilter(this);
setParent(parent);
parent->installEventFilter(this);
resizeToParent();
raise();
}
/*!
\internal
*/
void ProgressIndicator::paintEvent(QPaintEvent *)
{
QPainter p(this);
m_paint.paint(p, rect());
}
/*!
\internal
*/
@@ -287,24 +266,4 @@ void ProgressIndicator::hideEvent(QHideEvent *)
m_paint.stopAnimation();
}
/*!
\internal
*/
bool ProgressIndicator::eventFilter(QObject *obj, QEvent *ev)
{
if (obj == parent() && ev->type() == QEvent::Resize) {
resizeToParent();
}
return QWidget::eventFilter(obj, ev);
}
/*!
\internal
*/
void ProgressIndicator::resizeToParent()
{
QTC_ASSERT(parentWidget(), return);
setGeometry(QRect(QPoint(0, 0), parentWidget()->size()));
}
} // namespace Utils