void NotationPreview::makeNotationPreviewRects(QPoint basePoint,
const Segment* segment, const QRect& clipRect, RectRanges* npRects)
{
Profiler profiler("NotationPreview::makeNotationPreviewRects");
RectList* cachedNPData = getNotationPreviewData(segment);
if (cachedNPData->empty())
return ;
RectList::iterator npEnd = cachedNPData->end();
// Find the first preview rect that *starts within* the clipRect.
// Probably not the right thing to do as this means any event that starts
// prior to the clipRect but stretches through the clipRect will be
// dropped. And this explains why long notes disappear from the segment
// previews.
// Note that RectList is a std::vector, so this call will take increasing
// amounts of time as the number of events to the left of the clipRect
// increases. This is probably at least a small part of the "CPU usage
// increasing over time" issue.
// If cachedNPData is sorted by start time, we could at least do a binary
// search.
RectList::iterator npi = std::lower_bound(cachedNPData->begin(), npEnd, clipRect, RectCompare());
// If no preview rects were within the clipRect, bail.
if (npi == npEnd)
return ;
// ??? Go back one event if we aren't already at the beginning. Why?
// Hilariously, this partially "fixes" the "missing event in preview"
// problem. However, it only "fixes" the problem for a single event.
// Is that why this is here?
// When testing, to get around the fact that the segments are drawn on a
// segment layer in CompositionView, just disable then re-enable segment
// previews in the menu and the "missing event in preview" problem is easy
// to see.
if (npi != cachedNPData->begin())
--npi;
// Compute the interval within the Notation Preview for this segment.
RectRange interval;
interval.range.first = npi;
// Compute the rightmost x coord (xLim)
int segEndX = int(nearbyint(m_grid.getRulerScale()->getXForTime(segment->getEndMarkerTime())));
int xLim = std::min(clipRect.right(), segEndX);
//RG_DEBUG << "NotationPreview::makeNotationPreviewRects : basePoint.x : "
// << basePoint.x();
// Search sequentially for the last preview rect in the segment.
while (npi != npEnd && npi->x() < xLim)
++npi;
interval.range.second = npi;
interval.basePoint.setX(0);
interval.basePoint.setY(basePoint.y());
interval.color = segment->getPreviewColour();
// Add the interval to the caller's interval list.
npRects->push_back(interval);
}
void NotationPreview::makeNotationPreviewRectsMovingSegment(QPoint basePoint,
const Segment* segment, const QRect& currentSR, RectRanges* npRects)
{
CompositionRect unmovedSR =
m_compositionModelImpl.computeSegmentRect(*segment);
RectList* cachedNPData = getNotationPreviewData(segment);
if (cachedNPData->empty())
return ;
RectList::iterator npBegin = cachedNPData->begin();
RectList::iterator npEnd = cachedNPData->end();
RectList::iterator npi;
if (m_compositionModelImpl.getChangeType() ==
CompositionModelImpl::ChangeResizeFromStart)
npi = std::lower_bound(npBegin, npEnd, currentSR, RectCompare());
else
npi = std::lower_bound(npBegin, npEnd, unmovedSR, RectCompare());
if (npi == npEnd)
return ;
// ??? Bump iterator back one to try and pick up the previous event
// rectangle which might be needed.
if (npi != npBegin &&
m_compositionModelImpl.getChangeType() !=
CompositionModelImpl::ChangeResizeFromStart) {
--npi;
}
// Compute the interval within the Notation Preview for this segment.
RectRange interval;
interval.range.first = npi;
// Compute the rightmost x coord (xLim)
int xLim = m_compositionModelImpl.getChangeType() ==
CompositionModelImpl::ChangeMove ?
unmovedSR.right() : currentSR.right();
//RG_DEBUG << "NotationPreview::makeNotationPreviewRectsMovingSegment : basePoint.x : "
// << basePoint.x();
// Search sequentially for the last preview rect in the segment.
while (npi != npEnd && npi->x() < xLim)
++npi;
interval.range.second = npi;
interval.basePoint.setY(basePoint.y());
if (m_compositionModelImpl.getChangeType() ==
CompositionModelImpl::ChangeMove)
interval.basePoint.setX(basePoint.x() - unmovedSR.x());
else
interval.basePoint.setX(0);
interval.color = segment->getPreviewColour();
npRects->push_back(interval);
}