QList<QLineF> Snapper::findSnappingOffsetLines(const SnapLineMap &snappingOffsetMap,
Qt::Orientation orientation,
double snapLine,
double lowerLimit,
double upperLimit,
QList<QRectF> *boundingRects) const
{
QList<QLineF> lineList;
SnapLineMapIterator snappingOffsetIterator(snappingOffsetMap);
while (snappingOffsetIterator.hasNext()) {
snappingOffsetIterator.next();
const QRectF &formEditorItemRect(snappingOffsetIterator.value().first);
double formEditorItemRectLowerLimit;
double formEditorItemRectUpperLimit;
if (orientation == Qt::Horizontal) {
formEditorItemRectLowerLimit = formEditorItemRect.left();
formEditorItemRectUpperLimit = formEditorItemRect.right();
} else {
formEditorItemRectLowerLimit = formEditorItemRect.top();
formEditorItemRectUpperLimit = formEditorItemRect.bottom();
}
if (qFuzzyCompare(snapLine, snappingOffsetIterator.key()) &&
!(lowerLimit > formEditorItemRectUpperLimit ||
upperLimit < formEditorItemRectLowerLimit)) {
lineList += createSnapLine(orientation,
snapLine,
lowerLimit,
upperLimit,
formEditorItemRect);
if (boundingRects != 0)
boundingRects->append(snappingOffsetIterator.value().first);
}
}
return lineList;
}
double Snapper::snappedOffsetForOffsetLines(const SnapLineMap &snappingOffsetMap,
Qt::Orientation orientation,
double value,
double lowerLimit,
double upperLimit) const
{
QMultiMap<double, double> minimumSnappingLineMap;
SnapLineMapIterator snappingOffsetIterator(snappingOffsetMap);
while (snappingOffsetIterator.hasNext()) {
snappingOffsetIterator.next();
double snapLine = snappingOffsetIterator.key();
const QRectF &formEditorItemRect(snappingOffsetIterator.value().first);
double formEditorItemRectLowerLimit;
double formEditorItemRectUpperLimit;
if (orientation == Qt::Horizontal) {
formEditorItemRectLowerLimit = formEditorItemRect.left();
formEditorItemRectUpperLimit = formEditorItemRect.right();
} else {
formEditorItemRectLowerLimit = formEditorItemRect.top();
formEditorItemRectUpperLimit = formEditorItemRect.bottom();
}
double offset = value - snapLine;
double distance = qAbs(offset);
if (distance < snappingDistance() &&
!(lowerLimit > formEditorItemRectUpperLimit ||
upperLimit < formEditorItemRectLowerLimit)) {
minimumSnappingLineMap.insert(distance, offset);
}
}
if (!minimumSnappingLineMap.isEmpty()) {
return minimumSnappingLineMap.begin().value();
}
return std::numeric_limits<double>::max();
}
