void TimelineView::updateTimeline(bool updateStartX)
{
if (!m_delegate)
return;
if (!m_ranges.isArray())
return;
int length = m_ranges.property("length").toInt32();
qreal startValue = m_ranges.property(0).property("start").toNumber();
qreal endValue = m_ranges.property(length-1).property("start").toNumber() + m_ranges.property(length-1).property("duration").toNumber();
qreal totalRange = endValue - startValue;
qreal window = m_endTime - m_startTime;
if (window == 0) //###
return;
qreal spacing = width() / window;
qreal oldtw = m_totalWidth;
m_totalWidth = totalRange * spacing;
// Find region samples
int minsample = 0;
int maxsample = 0;
for (int i = 0; i < length; ++i) {
if (m_ends.at(i) >= m_startTime)
break;
minsample = i;
}
for (int i = minsample + 1; i < length; ++i) {
maxsample = i;
if (m_starts.at(i) > m_endTime)
break;
}
//### overkill (if we can expose whether or not data is nested)
for (int i = maxsample + 1; i < length; ++i) {
if (m_starts.at(i) < m_endTime)
maxsample = i;
}
//qDebug() << maxsample - minsample;
if (updateStartX) {
qreal oldStartX = m_startX;
m_startX = qRound(m_startTime * spacing);
if (m_startX != oldStartX) {
emit startXChanged(m_startX);
}
}
//### emitting this before startXChanged was causing issues
if (m_totalWidth != oldtw)
emit totalWidthChanged(m_totalWidth);
//clear items no longer in view
while (prevMin < minsample) {
delete m_items.take(prevMin);
++prevMin;
}
while (prevMax > maxsample) {
delete m_items.take(prevMax);
--prevMax;
}
// Show items
int z = 0;
for (int i = maxsample-1; i >= minsample; --i) {
QDeclarativeItem *item = 0;
item = m_items.value(i);
bool creating = false;
if (!item) {
QDeclarativeContext *ctxt = new QDeclarativeContext(qmlContext(this));
item = qobject_cast<QDeclarativeItem*>(m_delegate->beginCreate(ctxt));
m_items.insert(i, item);
creating = true;
int type = m_ranges.property(i).property("type").toNumber();
ctxt->setParent(item); //### QDeclarative_setParent_noEvent(ctxt, item); instead?
ctxt->setContextProperty("duration", qMax(qRound(m_ranges.property(i).property("duration").toNumber()/qreal(1000)),1));
ctxt->setContextProperty("fileName", m_ranges.property(i).property("fileName").toString());
ctxt->setContextProperty("line", m_ranges.property(i).property("line").toNumber());
QString label;
QVariantList list = m_ranges.property(i).property("label").toVariant().value<QVariantList>();
for (int i = 0; i < list.size(); ++i) {
if (i > 0)
label += QLatin1Char('\n');
QString sub = list.at(i).toString();
//### only do rewrite for bindings...
if (type == 3) {
//### don't construct in loop
QRegExp rewrite("\\(function \\$(\\w+)\\(\\) \\{ return (.+) \\}\\)");
bool match = rewrite.exactMatch(sub);
if (match)
sub = rewrite.cap(1) + ": " + rewrite.cap(2);
}
label += sub;
}
ctxt->setContextProperty("label", label);
ctxt->setContextProperty("type", type);
item->setParentItem(this);
}
if (item) {
item->setX(m_starts.at(i)*spacing);
item->setWidth((m_ends.at(i)-m_starts.at(i)) * spacing);
item->setZValue(++z);
}
if (creating)
m_delegate->completeCreate();
}
prevMin = minsample;
prevMax = maxsample;
}
