| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <private/logxlogypolardomain_p.h> |
| #include <private/qabstractaxis_p.h> |
| #include <QtCharts/QLogValueAxis> |
| #include <QtCore/QtMath> |
| #include <cmath> |
| |
| QT_CHARTS_BEGIN_NAMESPACE |
| |
| LogXLogYPolarDomain::LogXLogYPolarDomain(QObject *parent) |
| : PolarDomain(parent), |
| m_logLeftX(0), |
| m_logRightX(1), |
| m_logBaseX(10), |
| m_logInnerY(0), |
| m_logOuterY(1), |
| m_logBaseY(10) |
| { |
| } |
| |
| LogXLogYPolarDomain::~LogXLogYPolarDomain() |
| { |
| } |
| |
| void LogXLogYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) |
| { |
| bool axisXChanged = false; |
| bool axisYChanged = false; |
| |
| adjustLogDomainRanges(minX, maxX); |
| adjustLogDomainRanges(minY, maxY); |
| |
| if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(m_maxX, maxX)) { |
| m_minX = minX; |
| m_maxX = maxX; |
| axisXChanged = true; |
| qreal logMinX = std::log10(m_minX) / std::log10(m_logBaseX); |
| qreal logMaxX = std::log10(m_maxX) / std::log10(m_logBaseX); |
| 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; |
| qreal logMinY = std::log10(m_minY) / std::log10(m_logBaseY); |
| qreal logMaxY = std::log10(m_maxY) / std::log10(m_logBaseY); |
| m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY; |
| m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY; |
| if (!m_signalsBlocked) |
| emit rangeVerticalChanged(m_minY, m_maxY); |
| } |
| |
| if (axisXChanged || axisYChanged) |
| emit updated(); |
| } |
| |
| void LogXLogYPolarDomain::zoomIn(const QRectF &rect) |
| { |
| storeZoomReset(); |
| 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 logLeftY = m_logOuterY - rect.bottom() * (m_logOuterY - m_logInnerY) / m_size.height(); |
| qreal logRightY = m_logOuterY - rect.top() * (m_logOuterY - m_logInnerY) / m_size.height(); |
| qreal leftY = qPow(m_logBaseY, logLeftY); |
| qreal rightY = qPow(m_logBaseY, logRightY); |
| qreal minY = leftY < rightY ? leftY : rightY; |
| qreal maxY = leftY > rightY ? leftY : rightY; |
| |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| void LogXLogYPolarDomain::zoomOut(const QRectF &rect) |
| { |
| storeZoomReset(); |
| 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; |
| |
| const qreal factorY = m_size.height() / rect.height(); |
| qreal newLogMinY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 - factorY); |
| qreal newLogMaxY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 + factorY); |
| qreal leftY = qPow(m_logBaseY, newLogMinY); |
| qreal rightY = qPow(m_logBaseY, newLogMaxY); |
| qreal minY = leftY < rightY ? leftY : rightY; |
| qreal maxY = leftY > rightY ? leftY : rightY; |
| |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| void LogXLogYPolarDomain::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 stepY = dy * (m_logOuterY - m_logInnerY) / m_radius; |
| qreal leftY = qPow(m_logBaseY, m_logInnerY + stepY); |
| qreal rightY = qPow(m_logBaseY, m_logOuterY + stepY); |
| qreal minY = leftY < rightY ? leftY : rightY; |
| qreal maxY = leftY > rightY ? leftY : rightY; |
| |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| qreal LogXLogYPolarDomain::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); |
| const qreal logValue = std::log10(value) / std::log10(m_logBaseX); |
| const qreal valueDelta = logValue - m_logLeftX; |
| |
| retVal = valueDelta * tickSpan; |
| } |
| return retVal; |
| } |
| |
| qreal LogXLogYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const |
| { |
| qreal retVal; |
| if (value <= 0) { |
| ok = false; |
| retVal = 0.0; |
| } else { |
| ok = true; |
| const qreal tickSpan = m_radius / qAbs(m_logOuterY - m_logInnerY); |
| const qreal logValue = std::log10(value) / std::log10(m_logBaseY); |
| const qreal valueDelta = logValue - m_logInnerY; |
| |
| retVal = valueDelta * tickSpan; |
| |
| if (retVal < 0.0) |
| retVal = 0.0; |
| } |
| return retVal; |
| } |
| |
| QPointF LogXLogYPolarDomain::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)); |
| |
| const qreal deltaY = m_radius / qAbs(m_logOuterY - m_logInnerY); |
| qreal r = qPow(m_logBaseY, m_logInnerY + (line.length() / deltaY)); |
| |
| return QPointF(a, r); |
| } |
| |
| bool LogXLogYPolarDomain::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()); |
| } else if (logAxis && logAxis->orientation() == Qt::Vertical){ |
| QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); |
| handleVerticalAxisBaseChanged(logAxis->base()); |
| } |
| |
| return true; |
| } |
| |
| bool LogXLogYPolarDomain::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))); |
| else if (logAxis && logAxis->orientation() == Qt::Vertical) |
| QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); |
| |
| return true; |
| } |
| |
| void LogXLogYPolarDomain::handleHorizontalAxisBaseChanged(qreal baseX) |
| { |
| m_logBaseX = baseX; |
| qreal logMinX = std::log10(m_minX) / std::log10(m_logBaseX); |
| qreal logMaxX = std::log10(m_maxX) / std::log10(m_logBaseX); |
| m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX; |
| m_logRightX = logMinX > logMaxX ? logMinX : logMaxX; |
| emit updated(); |
| } |
| |
| void LogXLogYPolarDomain::handleVerticalAxisBaseChanged(qreal baseY) |
| { |
| m_logBaseY = baseY; |
| qreal logMinY = std::log10(m_minY) / std::log10(m_logBaseY); |
| qreal logMaxY = std::log10(m_maxY) / std::log10(m_logBaseY); |
| m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY; |
| m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY; |
| emit updated(); |
| } |
| |
| // operators |
| |
| bool Q_AUTOTEST_EXPORT operator== (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &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 Q_AUTOTEST_EXPORT operator!= (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &domain2) |
| { |
| return !(domain1 == domain2); |
| } |
| |
| |
| QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXLogYPolarDomain &domain) |
| { |
| #ifdef QT_NO_TEXTSTREAM |
| Q_UNUSED(domain) |
| #else |
| dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; |
| #endif |
| return dbg.maybeSpace(); |
| } |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #include "moc_logxlogypolardomain_p.cpp" |