logxypolardomain.cpp
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| text/x-c
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CppLexer
Miikka Heikkinen
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r2483 | /**************************************************************************** | ||
| ** | ||||
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r2776 | ** Copyright (C) 2015 The Qt Company Ltd | ||
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r2483 | ** All rights reserved. | ||
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r2776 | ** For any questions to The Qt Company, please use contact form at http://qt.io | ||
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r2483 | ** | ||
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r2740 | ** This file is part of the Qt Charts module. | ||
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r2483 | ** | ||
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
| ** accordance with the Qt License Agreement provided with the Software | ||||
| ** or, alternatively, in accordance with the terms contained in a written | ||||
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r2776 | ** agreement between you and The Qt Company. | ||
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r2483 | ** | ||
| ** If you have questions regarding the use of this file, please use | ||||
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r2740 | ** contact form at http://qt.io | ||
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r2483 | ** | ||
| ****************************************************************************/ | ||||
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r2714 | #include <private/logxypolardomain_p.h> | ||
| #include <private/qabstractaxis_p.h> | ||||
| #include <QtCharts/QLogValueAxis> | ||||
| #include <QtCore/QtMath> | ||||
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r2775 | #include <cmath> | ||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r2483 | |||
| LogXYPolarDomain::LogXYPolarDomain(QObject *parent) | ||||
| : PolarDomain(parent), | ||||
| m_logLeftX(0), | ||||
| m_logRightX(1), | ||||
| m_logBaseX(10) | ||||
| { | ||||
| } | ||||
| LogXYPolarDomain::~LogXYPolarDomain() | ||||
| { | ||||
| } | ||||
| void LogXYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
| { | ||||
| bool axisXChanged = false; | ||||
| bool axisYChanged = false; | ||||
| adjustLogDomainRanges(minX, maxX); | ||||
| if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(m_maxX, maxX)) { | ||||
| m_minX = minX; | ||||
| m_maxX = maxX; | ||||
| axisXChanged = true; | ||||
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r2775 | qreal logMinX = std::log10(m_minX) / std::log10(m_logBaseX); | ||
| qreal logMaxX = std::log10(m_maxX) / std::log10(m_logBaseX); | ||||
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r2483 | m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX; | ||
| m_logRightX = logMinX > logMaxX ? logMinX : logMaxX; | ||||
| if (!m_signalsBlocked) | ||||
| emit rangeHorizontalChanged(m_minX, m_maxX); | ||||
| } | ||||
| if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) { | ||||
| m_minY = minY; | ||||
| m_maxY = maxY; | ||||
| axisYChanged = true; | ||||
| if (!m_signalsBlocked) | ||||
| emit rangeVerticalChanged(m_minY, m_maxY); | ||||
| } | ||||
| if (axisXChanged || axisYChanged) | ||||
| emit updated(); | ||||
| } | ||||
| void LogXYPolarDomain::zoomIn(const QRectF &rect) | ||||
| { | ||||
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r2545 | storeZoomReset(); | ||
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r2483 | qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX; | ||
| qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX; | ||||
| qreal leftX = qPow(m_logBaseX, logLeftX); | ||||
| qreal rightX = qPow(m_logBaseX, logRightX); | ||||
| qreal minX = leftX < rightX ? leftX : rightX; | ||||
| qreal maxX = leftX > rightX ? leftX : rightX; | ||||
| qreal dy = spanY() / m_size.height(); | ||||
| qreal minY = m_minY; | ||||
| qreal maxY = m_maxY; | ||||
| minY = maxY - dy * rect.bottom(); | ||||
| maxY = maxY - dy * rect.top(); | ||||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| void LogXYPolarDomain::zoomOut(const QRectF &rect) | ||||
| { | ||||
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r2545 | storeZoomReset(); | ||
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r2483 | const qreal factorX = m_size.width() / rect.width(); | ||
| qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 - factorX); | ||||
| qreal logRIghtX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 + factorX); | ||||
| qreal leftX = qPow(m_logBaseX, logLeftX); | ||||
| qreal rightX = qPow(m_logBaseX, logRIghtX); | ||||
| qreal minX = leftX < rightX ? leftX : rightX; | ||||
| qreal maxX = leftX > rightX ? leftX : rightX; | ||||
| qreal dy = spanY() / rect.height(); | ||||
| 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 LogXYPolarDomain::move(qreal dx, qreal dy) | ||||
| { | ||||
| qreal stepX = dx * (m_logRightX - m_logLeftX) / m_size.width(); | ||||
| qreal leftX = qPow(m_logBaseX, m_logLeftX + stepX); | ||||
| qreal rightX = qPow(m_logBaseX, m_logRightX + stepX); | ||||
| qreal minX = leftX < rightX ? leftX : rightX; | ||||
| qreal maxX = leftX > rightX ? leftX : rightX; | ||||
| qreal y = spanY() / m_radius; | ||||
| qreal minY = m_minY; | ||||
| qreal maxY = m_maxY; | ||||
| if (dy != 0) { | ||||
| minY = minY + y * dy; | ||||
| maxY = maxY + y * dy; | ||||
| } | ||||
| setRange(minX, maxX, minY, maxY); | ||||
| } | ||||
| qreal LogXYPolarDomain::toAngularCoordinate(qreal value, bool &ok) const | ||||
| { | ||||
| qreal retVal; | ||||
| if (value <= 0) { | ||||
| ok = false; | ||||
| retVal = 0.0; | ||||
| } else { | ||||
| ok = true; | ||||
| const qreal tickSpan = 360.0 / qAbs(m_logRightX - m_logLeftX); | ||||
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r2775 | const qreal logValue = std::log10(value) / std::log10(m_logBaseX); | ||
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r2483 | const qreal valueDelta = logValue - m_logLeftX; | ||
| retVal = valueDelta * tickSpan; | ||||
| } | ||||
| return retVal; | ||||
| } | ||||
| qreal LogXYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const | ||||
| { | ||||
| ok = true; | ||||
| if (value < m_minY) | ||||
| value = m_minY; | ||||
| // Dont limit the max. The drawing should clip the stuff that goes out of the grid | ||||
| qreal f = (value - m_minY) / (m_maxY - m_minY); | ||||
| return f * m_radius; | ||||
| } | ||||
| QPointF LogXYPolarDomain::calculateDomainPoint(const QPointF &point) const | ||||
| { | ||||
| if (point == m_center) | ||||
| return QPointF(0.0, m_minY); | ||||
| QLineF line(m_center, point); | ||||
| qreal a = 90.0 - line.angle(); | ||||
| if (a < 0.0) | ||||
| a += 360.0; | ||||
| const qreal deltaX = 360.0 / qAbs(m_logRightX - m_logLeftX); | ||||
| a = qPow(m_logBaseX, m_logLeftX + (a / deltaX)); | ||||
| qreal r = m_minY + ((m_maxY - m_minY) * (line.length() / m_radius)); | ||||
| return QPointF(a, r); | ||||
| } | ||||
| bool LogXYPolarDomain::attachAxis(QAbstractAxis *axis) | ||||
| { | ||||
| AbstractDomain::attachAxis(axis); | ||||
| QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
| if (logAxis && logAxis->orientation() == Qt::Horizontal) { | ||||
| QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal))); | ||||
| handleHorizontalAxisBaseChanged(logAxis->base()); | ||||
| } | ||||
| return true; | ||||
| } | ||||
| bool LogXYPolarDomain::detachAxis(QAbstractAxis *axis) | ||||
| { | ||||
| AbstractDomain::detachAxis(axis); | ||||
| QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
| if (logAxis && logAxis->orientation() == Qt::Horizontal) | ||||
| QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal))); | ||||
| return true; | ||||
| } | ||||
| void LogXYPolarDomain::handleHorizontalAxisBaseChanged(qreal baseX) | ||||
| { | ||||
| m_logBaseX = baseX; | ||||
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r2775 | qreal logMinX = std::log10(m_minX) / std::log10(m_logBaseX); | ||
| qreal logMaxX = std::log10(m_maxX) / std::log10(m_logBaseX); | ||||
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r2483 | m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX; | ||
| m_logRightX = logMinX > logMaxX ? logMinX : logMaxX; | ||||
| emit updated(); | ||||
| } | ||||
| // operators | ||||
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r2712 | bool QT_CHARTS_AUTOTEST_EXPORT operator== (const LogXYPolarDomain &domain1, const LogXYPolarDomain &domain2) | ||
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r2483 | { | ||
| 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)); | ||||
| } | ||||
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r2712 | bool QT_CHARTS_AUTOTEST_EXPORT operator!= (const LogXYPolarDomain &domain1, const LogXYPolarDomain &domain2) | ||
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r2483 | { | ||
| return !(domain1 == domain2); | ||||
| } | ||||
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r2712 | QDebug QT_CHARTS_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXYPolarDomain &domain) | ||
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r2483 | { | ||
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r2620 | #ifdef QT_NO_TEXTSTREAM | ||
| Q_UNUSED(domain) | ||||
| #else | ||||
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r2483 | dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||
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r2620 | #endif | ||
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r2483 | return dbg.maybeSpace(); | ||
| } | ||||
| #include "moc_logxypolardomain_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||