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Don't crash on empty list

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This commit is contained in:
Dušan Poizl
2016-07-30 14:28:12 +02:00
parent 4ad766a2ca
commit b576ffb215
1 changed files with 18 additions and 12 deletions
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imageringlist.cpp
+18 -12
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@@ -119,22 +119,28 @@ void ImageRingList::setFiles(const QStringList files)
void ImageRingList::increment()
{
(*m_firstImage)->release();
m_firstImage = increment(m_firstImage);
m_currImage = increment(m_currImage);
(*m_currImage)->load();
m_lastImage = increment(m_lastImage);
(*m_lastImage)->load();
if(m_images.size())
{
(*m_firstImage)->release();
m_firstImage = increment(m_firstImage);
m_currImage = increment(m_currImage);
(*m_currImage)->load();
m_lastImage = increment(m_lastImage);
(*m_lastImage)->load();
}
}
void ImageRingList::decrement()
{
(*m_lastImage)->release();
m_firstImage = decrement(m_firstImage);
m_currImage = decrement(m_currImage);
(*m_currImage)->load();
m_lastImage = decrement(m_lastImage);
(*m_firstImage)->load();
if(m_images.size())
{
(*m_lastImage)->release();
m_firstImage = decrement(m_firstImage);
m_currImage = decrement(m_currImage);
(*m_currImage)->load();
m_lastImage = decrement(m_lastImage);
(*m_firstImage)->load();
}
}
QList<shared_ptr<Image>>::iterator ImageRingList::increment(QList<ImagePtr>::iterator iter)