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division by zero fixed

This commit is contained in:
Uwe Rathmann 2023-04-21 08:58:37 +02:00
parent 9f74523b88
commit f0f2df43c0
1 changed files with 29 additions and 21 deletions
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50
src/layouts/QskLayoutChain.cpp
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@ -381,6 +381,9 @@ QskLayoutChain::Segments QskLayoutChain::preferredStretched( qreal size ) const
{ {
const int count = m_cells.size(); const int count = m_cells.size();
if ( count == 0 )
return Segments();
qreal sumFactors = 0.0; qreal sumFactors = 0.0;
QVarLengthArray< qreal > factors( count ); QVarLengthArray< qreal > factors( count );
@ -413,36 +416,41 @@ QskLayoutChain::Segments QskLayoutChain::preferredStretched( qreal size ) const
sumFactors += factors[i]; sumFactors += factors[i];
} }
auto sumSizes = size - ( m_validCells - 1 ) * m_spacing; qreal sumSizes = 0.0;
Q_FOREVER if ( sumFactors > 0.0 )
{ {
bool done = true; sumSizes = size - ( m_validCells - 1 ) * m_spacing;
for ( int i = 0; i < count; i++ ) Q_FOREVER
{ {
if ( factors[i] < 0.0 ) bool done = true;
continue;
const auto sz = sumSizes * factors[i] / sumFactors; for ( int i = 0; i < count; i++ )
const auto& hint = m_cells[i].metrics;
const auto boundedSize =
qBound( hint.preferred(), sz, hint.maximum() );
if ( boundedSize != sz )
{ {
segments[i].length = boundedSize; if ( factors[i] < 0.0 )
sumSizes -= boundedSize; continue;
sumFactors -= factors[i];
factors[i] = -1.0;
done = false; const auto sz = sumSizes * factors[i] / sumFactors;
const auto& hint = m_cells[i].metrics;
const auto boundedSize =
qBound( hint.preferred(), sz, hint.maximum() );
if ( boundedSize != sz )
{
segments[i].length = boundedSize;
sumSizes -= boundedSize;
sumFactors -= factors[i];
factors[i] = -1.0;
done = false;
}
} }
}
if ( done ) if ( done )
break; break;
}
} }
qreal offset = 0; qreal offset = 0;