void
HoverIndex::timerEvent(QTimerEvent * event)
{
if (event->timerId() != timer.timerId() || items.isEmpty())
return;
Items::iterator it;
IndexInfo::Fades::iterator step;
it = items.begin();
QWidget *w;
while (it != items.end())
{
if (it.key().isNull())
{
it = items.erase(it);
continue;
}
w = const_cast<QWidget*>(it.key().data());
IndexInfo &info = it.value();
if (info.fades[In].isEmpty() && info.fades[Out].isEmpty())
{
++it; continue;
}
step = info.fades[In].begin();
while (step != info.fades[In].end())
{
step.value() += 2;
if ((uint)step.value() > (maxSteps-2))
step = info.fades[In].erase(step);
else
++step;
}
step = info.fades[Out].begin();
while (step != info.fades[Out].end())
{
step.value() -= 2;
if (step.value() < 1)
step = info.fades[Out].erase(step);
else
++step;
}
w->update();
if (info.index == 0L && // nothing actually hovered
info.fades[In].isEmpty() && // no fade ins
info.fades[Out].isEmpty()) // no fade outs
it = items.erase(it); // so remove this item
else
++it;
}
if (items.isEmpty())
timer.stop();
}
const IndexInfo *
HoverIndex::_info(const QWidget *widget, long int idx) const
{
HoverIndex *that = const_cast<HoverIndex*>(this);
QWidget *w = const_cast<QWidget*>(widget);
Items::iterator it = that->items.find(w);
if (it == items.end())
{ // we have no entry yet
if (idx == 0L)
return 0L;
// ... but we'll need one
it = that->items.insert(w, IndexInfo(0L));
connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(release(QObject*)));
// if (!timer.isActive())
that->timer.start(timeStep, that);
}
// we now have an entry - check for validity and update in case
IndexInfo &info = it.value();
if (info.index != idx)
{ // sth. changed
info.fades[In][idx] = 1;
if (info.index)
{
int v = maxSteps;
IndexInfo::Fades::iterator old = info.fades[In].find(info.index);
if (old != info.fades[In].end())
{
v = old.value();
info.fades[In].erase(old);
}
info.fades[Out][info.index] = v;
}
info.index = idx;
}
return &info;
}
void
HoverIndex::timerEvent(QTimerEvent * event)
{
if (event->timerId() != timer.timerId() || items.isEmpty())
return;
Items::iterator it;
IndexInfo::Fades::iterator step;
it = items.begin();
QWidget *w;
while (it != items.end())
{
if (!it.key())
{
it = items.erase(it);
continue;
}
#if QT_VERSION >= 0x040400
// below does work in general, but is... ugly?!
// another way would be to map to a const widget first or perform a static_cast - ughh
w = const_cast<QWidget*>(it.key().data());
#else
w = const_cast<QWidget*>(&(*it.key()));
#endif
IndexInfo &info = it.value();
if (info.fades[In].isEmpty() && info.fades[Out].isEmpty())
{
++it; continue;
}
step = info.fades[In].begin();
while (step != info.fades[In].end())
{
step.value() += 2;
if ((uint)step.value() > (maxSteps-2))
step = info.fades[In].erase(step);
else
++step;
}
step = info.fades[Out].begin();
while (step != info.fades[Out].end())
{
step.value() -= 2;
if (step.value() < 1)
step = info.fades[Out].erase(step);
else
++step;
}
w->update();
if (info.index == 0L && // nothing actually hovered
info.fades[In].isEmpty() && // no fade ins
info.fades[Out].isEmpty()) // no fade outs
it = items.erase(it); // so remove this item
else
++it;
}
if (items.isEmpty())
timer.stop();
}