logxydomain.cpp
182 lines
| 5.6 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 "logxydomain_p.h" | ||||
| #include "qabstractaxis_p.h" | ||||
| #include <qmath.h> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| LogXYDomain::LogXYDomain(QObject *parent) | ||||
| : AbstractDomain(parent), | ||||
| m_logMinX(0), | ||||
| m_logMaxX(1), | ||||
| m_logBaseX(10) | ||||
| { | ||||
| } | ||||
| LogXYDomain::~LogXYDomain() | ||||
| { | ||||
| } | ||||
| void LogXYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
| { | ||||
| bool axisXChanged = false; | ||||
| bool axisYChanged = false; | ||||
| if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(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); | ||||
Michal Klocek
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r2288 | if(!m_signalsBlocked) | ||
|
Marek Rosa
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r2275 | emit rangeHorizontalChanged(m_minX, m_maxX); | ||
| } | ||||
| if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) { | ||||
| m_minY = minY; | ||||
| m_maxY = maxY; | ||||
| axisYChanged = true; | ||||
|
Michal Klocek
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r2288 | if(!m_signalsBlocked) | ||
|
Marek Rosa
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r2275 | emit rangeVerticalChanged(m_minY, m_maxY); | ||
| } | ||||
| if (axisXChanged || axisYChanged) | ||||
| emit updated(); | ||||
| } | ||||
| void LogXYDomain::zoomIn(const QRectF &rect) | ||||
| { | ||||
|
Marek Rosa
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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); | ||||
|
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r2275 | |||
|
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r2280 | qreal dy = spanY() / m_size.height(); | ||
|
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r2275 | qreal minY = m_minY; | ||
| qreal maxY = m_maxY; | ||||
| minY = maxY - dy * rect.bottom(); | ||||
| maxY = maxY - dy * rect.top(); | ||||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| void LogXYDomain::zoomOut(const QRectF &rect) | ||||
| { | ||||
|
Marek Rosa
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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); | ||||
|
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r2275 | |||
|
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r2280 | qreal dy = spanY() / rect.height(); | ||
|
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r2275 | qreal minY = m_minY; | ||
| qreal maxY = m_maxY; | ||||
| maxY = minY + dy * rect.bottom(); | ||||
| minY = maxY - dy * m_size.height(); | ||||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| void LogXYDomain::move(qreal dx, qreal dy) | ||||
| { | ||||
|
Marek Rosa
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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); | ||||
|
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r2275 | |||
|
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r2280 | qreal y = spanY() / m_size.height(); | ||
|
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r2275 | qreal minY = m_minY; | ||
| qreal maxY = m_maxY; | ||||
| if (dy != 0) { | ||||
| minY = minY + y * dy; | ||||
| maxY = maxY + y * dy; | ||||
| } | ||||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| QPointF LogXYDomain::calculateGeometryPoint(const QPointF &point) const | ||||
| { | ||||
| const qreal leftEdge = m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
| const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||||
| qreal x = (log10(point.x()) / log10(m_logBaseX)) * deltaX - leftEdge * deltaX; | ||||
| qreal y = (point.y() - m_minY) * -deltaY + m_size.height(); | ||||
| return QPointF(x, y); | ||||
| } | ||||
| QVector<QPointF> LogXYDomain::calculateGeometryPoints(const QList<QPointF>& vector) const | ||||
| { | ||||
| const qreal leftEdge = m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
| const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||||
| 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 - leftEdge * deltaX; | ||||
| qreal y = (vector[i].y() - m_minY) * -deltaY + m_size.height(); | ||||
| result[i].setX(x); | ||||
| result[i].setY(y); | ||||
| } | ||||
| return result; | ||||
| } | ||||
| QPointF LogXYDomain::calculateDomainPoint(const QPointF &point) const | ||||
| { | ||||
|
Marek Rosa
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r2283 | const qreal leftEdgeX= m_logMinX < m_logMaxX ? m_logMinX : m_logMaxX; | ||
| const qreal deltaX = m_size.width() / qAbs(m_logMaxX - m_logMinX); | ||||
|
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r2275 | const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||
|
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r2283 | qreal x = qPow(m_logBaseX, leftEdgeX + point.x() / deltaX); | ||
|
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r2275 | qreal y = (point.y() - m_size.height()) / (-deltaY) + m_minY; | ||
| return QPointF(x, y); | ||||
| } | ||||
| // operators | ||||
| bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const LogXYDomain &domain1, const LogXYDomain &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 LogXYDomain &domain1, const LogXYDomain &domain2) | ||||
| { | ||||
| return !(domain1 == domain2); | ||||
| } | ||||
| QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXYDomain &domain) | ||||
| { | ||||
| dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
| return dbg.maybeSpace(); | ||||
| } | ||||
| #include "moc_logxydomain_p.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||