logxlogydomain.cpp
180 lines
| 6.4 KiB
| text/x-c
|
CppLexer
Marek Rosa
|
r2275 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
| ** This file is part of the Qt Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial License Agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #include "logxlogydomain_p.h" | ||||
| #include "qabstractaxis_p.h" | ||||
| #include <qmath.h> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| LogXLogYDomain::LogXLogYDomain(QObject *parent) | ||||
| : AbstractDomain(parent), | ||||
| m_logMinX(0), | ||||
| m_logMaxX(1), | ||||
| m_logBaseX(10), | ||||
| m_logMinY(0), | ||||
| m_logMaxY(1), | ||||
| m_logBaseY(10) | ||||
| { | ||||
| } | ||||
| LogXLogYDomain::~LogXLogYDomain() | ||||
| { | ||||
| } | ||||
| void LogXLogYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
| { | ||||
| bool axisXChanged = false; | ||||
| bool axisYChanged = false; | ||||
| if (!qFuzzyIsNull(m_minX - minX) || !qFuzzyIsNull(m_maxX - maxX)) { | ||||
| m_minX = minX; | ||||
| m_maxX = maxX; | ||||
| axisXChanged = true; | ||||
| m_logMinX = log10(m_minX) / log10(m_logBaseX); | ||||
| m_logMaxX = log10(m_maxX) / log10(m_logBaseX); | ||||
| emit rangeHorizontalChanged(m_minX, m_maxX); | ||||
| } | ||||
| if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) { | ||||
| m_minY = minY; | ||||
| m_maxY = maxY; | ||||
| axisYChanged = true; | ||||
| m_logMinY = log10(m_minY) / log10(m_logBaseY); | ||||
| m_logMaxY = log10(m_maxY) / log10(m_logBaseY); | ||||
| emit rangeVerticalChanged(m_minY, m_maxY); | ||||
| } | ||||
| if (axisXChanged || axisYChanged) | ||||
| emit updated(); | ||||
| } | ||||
| void LogXLogYDomain::zoomIn(const QRectF &rect) | ||||
| { | ||||
|
Marek Rosa
|
r2280 | qreal newLogMinX = rect.left() * (m_logMaxX - m_logMinX) / m_size.width() + m_logMinX; | ||
| qreal newLogMaxX = rect.right() * (m_logMaxX - m_logMinX) / m_size.width() + m_logMinX; | ||||
| qreal minX = qPow(m_logBaseX, newLogMinX); | ||||
| qreal maxX = qPow(m_logBaseX, newLogMaxX); | ||||
|
Marek Rosa
|
r2275 | |||
|
Marek Rosa
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r2280 | qreal newLogMinY = m_logMaxY - rect.bottom() * (m_logMaxY - m_logMinY) / m_size.height(); | ||
| qreal newLogMaxY = m_logMaxY - rect.top() * (m_logMaxY - m_logMinY) / m_size.height(); | ||||
| qreal minY = qPow(m_logBaseY, newLogMinY); | ||||
| qreal maxY = qPow(m_logBaseY, newLogMaxY); | ||||
|
Marek Rosa
|
r2275 | |||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| void LogXLogYDomain::zoomOut(const QRectF &rect) | ||||
| { | ||||
|
Marek Rosa
|
r2280 | qreal ratioX = m_size.width()/rect.width(); | ||
| qreal newLogMinX = m_logMinX - (m_logMaxX - m_logMinX) / ratioX; | ||||
| qreal newLogMaxX = m_logMaxX + (m_logMaxX - m_logMinX) / ratioX; | ||||
| qreal minX = qPow(m_logBaseX, newLogMinX); | ||||
| qreal maxX = qPow(m_logBaseX, newLogMaxX); | ||||
| qreal ratioY = m_size.height()/rect.height(); | ||||
| qreal newLogMinY = m_logMaxY - (m_logMaxY - m_logMinY) / ratioY; | ||||
| qreal newLogMaxY = m_logMaxY + (m_logMaxY - m_logMinY) / ratioY; | ||||
| qreal minY = qPow(m_logBaseY, newLogMinY); | ||||
| qreal maxY = qPow(m_logBaseY, newLogMaxY); | ||||
|
Marek Rosa
|
r2275 | |||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| void LogXLogYDomain::move(qreal dx, qreal dy) | ||||
| { | ||||
|
Marek Rosa
|
r2280 | qreal stepX = dx * qAbs(m_logMaxX - m_logMinX) / m_size.width(); | ||
| qreal minX = qPow(m_logBaseX, m_logMinX + stepX); | ||||
| qreal maxX = qPow(m_logBaseX, m_logMaxX + stepX); | ||||
|
Marek Rosa
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r2275 | |||
|
Marek Rosa
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r2280 | qreal stepY = dy * qAbs(m_logMaxY - m_logMinY) / m_size.height(); | ||
| qreal minY = qPow(m_logBaseY, m_logMinY + stepY); | ||||
| qreal maxY = qPow(m_logBaseY, m_logMaxY + stepY); | ||||
|
Marek Rosa
|
r2275 | |||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| QPointF LogXLogYDomain::calculateGeometryPoint(const QPointF &point) const | ||||
| { | ||||
| const qreal leftEdgeX= m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||||
| const qreal leftEdgeY = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
| const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
| qreal x = (log10(point.x()) / log10(m_logBaseX)) * deltaX - leftEdgeX * deltaX; | ||||
| qreal y = (log10(point.y()) / log10(m_logBaseY)) * -deltaY - leftEdgeY * -deltaY + m_size.height(); | ||||
| return QPointF(x, y); | ||||
| } | ||||
| QVector<QPointF> LogXLogYDomain::calculateGeometryPoints(const QList<QPointF>& vector) const | ||||
| { | ||||
| const qreal leftEdgeX= m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||||
| const qreal leftEdgeY = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
| const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
| QVector<QPointF> result; | ||||
| result.resize(vector.count()); | ||||
| for (int i = 0; i < vector.count(); ++i) { | ||||
| qreal x = (log10(vector[i].x()) / log10(m_logBaseX)) * deltaX - leftEdgeX * deltaX; | ||||
| qreal y = (log10(vector[i].y()) / log10(m_logBaseY)) * -deltaY - leftEdgeY * -deltaY + m_size.height(); | ||||
| result[i].setX(x); | ||||
| result[i].setY(y); | ||||
| } | ||||
| return result; | ||||
| } | ||||
| QPointF LogXLogYDomain::calculateDomainPoint(const QPointF &point) const | ||||
| { | ||||
|
Marek Rosa
|
r2283 | const qreal leftEdgeX= m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||
| const qreal leftEdgeY = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
| const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
| qreal x = qPow(m_logBaseX, leftEdgeX + point.x() / deltaX); | ||||
| qreal y = qPow(m_logBaseY, leftEdgeY + (m_size.height() - point.y()) / deltaY); | ||||
|
Marek Rosa
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r2275 | return QPointF(x, y); | ||
| } | ||||
| // operators | ||||
| bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const LogXLogYDomain &domain1, const LogXLogYDomain &domain2) | ||||
| { | ||||
| return (qFuzzyIsNull(domain1.m_maxX - domain2.m_maxX) && | ||||
| qFuzzyIsNull(domain1.m_maxY - domain2.m_maxY) && | ||||
| qFuzzyIsNull(domain1.m_minX - domain2.m_minX) && | ||||
| qFuzzyIsNull(domain1.m_minY - domain2.m_minY)); | ||||
| } | ||||
| bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator!= (const LogXLogYDomain &domain1, const LogXLogYDomain &domain2) | ||||
| { | ||||
| return !(domain1 == domain2); | ||||
| } | ||||
| QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXLogYDomain &domain) | ||||
| { | ||||
| dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
| return dbg.maybeSpace(); | ||||
| } | ||||
| #include "moc_logxlogydomain_p.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||