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#include "domain_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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Domain::Domain(qreal minX, qreal maxX, qreal minY, qreal maxY):
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m_minX(minX),
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m_maxX(maxX),
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m_minY(minY),
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m_maxY(maxY)
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{
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}
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Domain::~Domain()
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{
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}
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qreal Domain::spanX() const
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{
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Q_ASSERT(m_maxX >= m_minX);
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return m_maxX - m_minX;
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}
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qreal Domain::spanY() const
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{
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Q_ASSERT(m_maxY >= m_minY);
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return m_maxY - m_minY;
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}
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bool Domain::isEmpty() const
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{
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return spanX()==0 || spanY()==0;
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}
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Domain Domain::subDomain(const QRectF& rect, qreal maxWidth,qreal maxHeight) const
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{
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Domain domain;
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qreal dx = spanX() / maxWidth;
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qreal dy = spanY() / maxHeight;
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domain.m_minX = m_minX + dx * rect.left();
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domain.m_maxX = m_minX + dx * rect.right();
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domain.m_minY = m_maxY - dy * rect.bottom();
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domain.m_maxY = m_maxY - dy * rect.top();
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return domain;
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}
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bool operator== (const Domain &domain1, const Domain &domain2)
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{
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return (domain1.m_maxX == domain2.m_maxX &&
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domain1.m_maxY == domain2.m_maxY &&
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domain1.m_minX == domain2.m_minX &&
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domain1.m_minY == domain2.m_minY);
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}
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bool operator!= (const Domain &domain1, const Domain &domain2)
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{
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return !(domain1 == domain2);
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}
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QDebug operator<<(QDebug dbg, const Domain &domain)
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{
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dbg.nospace() << "Domain("<<domain.m_minX<<','<<domain.m_maxX<<','<<domain.m_minY<<','<<domain.m_maxY<<')';
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return dbg.maybeSpace();
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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