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PatternSelection.cpp
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PatternSelection.cpp
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#include "PatternSelection.h"
PatternSelection::PatternSelection()
{
invalidate();
}
PatternSelection::PatternSelection(Frame a_first, Frame a_last)
: m_first(a_first)
, m_last (a_last )
{
if (m_first < WrongFrame)
m_first = WrongFrame;
if (m_last < WrongFrame)
m_last = WrongFrame;
if (m_last < m_first)
std::swap(m_first, m_last);
}
PatternSelection PatternSelection::extended(Frame a_frame)
{
Frame first = a_frame < m_first ? a_frame : m_first;
Frame last = a_frame > m_last ? a_frame : m_last;
return PatternSelection(first, last);
}
Frame PatternSelection::first() const
{
return m_first;
}
Frame PatternSelection::last() const
{
return m_last;
}
Frame PatternSelection::size() const
{
if (isValid())
{
Q_ASSERT(m_last >= m_first);
return m_last - m_first + 1;
}
return 0;
}
bool PatternSelection::isValid() const
{
return
m_first >= MinFrame &&
m_last >= MinFrame;
}
void PatternSelection::invalidate()
{
m_first = WrongFrame;
m_last = WrongFrame;
}