WebViewSmoothScroller::WebViewSmoothScroller (QWebView *view)
: QObject { view }
, View_ { view }
, ScrollTimer_ { new QTimer { this } }
{
connect (ScrollTimer_,
SIGNAL (timeout ()),
this,
SLOT (handleAutoscroll ()));
auto ef = Util::MakeLambdaEventFilter ([this] (QKeyEvent *event)
{
if (event->modifiers () == Qt::SHIFT &&
(event->key () == Qt::Key_PageUp || event->key () == Qt::Key_PageDown))
{
ScrollDelta_ += event->key () == Qt::Key_PageUp ? -0.1 : 0.1;
if (!ScrollTimer_->isActive ())
ScrollTimer_->start (30);
return true;
}
else if (event->modifiers () == Qt::SHIFT &&
event->key () == Qt::Key_Plus)
{
ScrollDelta_ = 0;
ScrollTimer_->stop ();
return true;
}
return false;
},
this);
view->installEventFilter (ef);
}
void HScrollBar::logic( double timeElapsed )
{
handleAutoscroll(timeElapsed);
}