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QmlProfiler: rendering optimizations

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Reviewed-by: Kai Koehne
This commit is contained in:
Christiaan Janssen
2011-04-05 12:49:02 +02:00
parent 4bb3d2e890
commit 80036b8905
4 changed files with 26 additions and 14 deletions
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27
src/plugins/qmlprofiler/timelineview.cpp
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@@ -81,6 +81,16 @@ void TimelineView::setRanges(const QScriptValue &value)
for (int i = 0; i < m_rangeList.count(); ++i)
m_prevLimits << PrevLimits(0, 0);
qreal startValue = m_ranges.property(0).property("start").toNumber();
m_starts.clear();
m_starts.reserve(length);
m_ends.clear();
m_ends.reserve(length);
for (int i = 0; i < length; ++i) {
m_starts.append(m_ranges.property(i).property("start").toNumber() - startValue);
m_ends.append(m_ranges.property(i).property("start").toNumber() + m_ranges.property(i).property("duration").toNumber() - startValue);
}
}
void TimelineView::setStartX(qreal arg)
@@ -127,32 +137,25 @@ void TimelineView::updateTimeline(bool updateStartX)
qreal oldtw = m_totalWidth;
m_totalWidth = totalRange * spacing;
qreal offsets[length][2];
for (int i = 0; i < length; ++i) {
offsets[i][0] = (m_ranges.property(i).property("start").toNumber() - startValue);
offsets[i][1] = (m_ranges.property(i).property("start").toNumber() + m_ranges.property(i).property("duration").toNumber() - startValue);
}
// Find region samples
int minsample = 0;
int maxsample = 0;
for (int i = 0; i < length; ++i) {
if (offsets[i][1] >= m_startTime)
if (m_ends.at(i) >= m_startTime)
break;
minsample = i;
}
for (int i = minsample + 1; i < length; ++i) {
maxsample = i;
if (offsets[i][0] > m_endTime)
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 (offsets[i][0] < m_endTime)
if (m_starts.at(i) < m_endTime)
maxsample = i;
}
@@ -222,8 +225,8 @@ void TimelineView::updateTimeline(bool updateStartX)
item->setParentItem(this);
}
if (item) {
item->setX(offsets[i][0]*spacing);
item->setWidth(m_ranges.property(i).property("duration").toNumber() * spacing);
item->setX(m_starts.at(i)*spacing);
item->setWidth((m_ends.at(i)-m_starts.at(i)) * spacing);
item->setZValue(++z);
}
if (creating)