logxlogypolardomain.cpp
283 lines
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| text/x-c
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CppLexer
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r2854 | /**************************************************************************** | ||
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r2483 | ** | ||
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r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
** Contact: https://www.qt.io/licensing/ | ||||
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r2483 | ** | ||
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r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
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r2483 | ** | ||
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r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
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r2845 | ** Commercial License Usage | ||
** Licensees holding valid commercial Qt licenses may use this file in | ||||
** accordance with the commercial license agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and The Qt Company. For licensing terms | ||||
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r2854 | ** and conditions see https://www.qt.io/terms-conditions. For further | ||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** 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. | ||||
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r2483 | ** | ||
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r2845 | ** $QT_END_LICENSE$ | ||
** | ||||
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r2854 | ****************************************************************************/ | ||
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r2483 | |||
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r2714 | #include <private/logxlogypolardomain_p.h> | ||
#include <private/qabstractaxis_p.h> | ||||
#include <QtCharts/QLogValueAxis> | ||||
#include <QtCore/QtMath> | ||||
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r2775 | #include <cmath> | ||
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r2483 | |||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r2483 | |||
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; | ||||
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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; | ||||
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r2775 | qreal logMinY = std::log10(m_minY) / std::log10(m_logBaseY); | ||
qreal logMaxY = std::log10(m_maxY) / std::log10(m_logBaseY); | ||||
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r2483 | 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) | ||||
{ | ||||
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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 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) | ||||
{ | ||||
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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; | ||||
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); | ||||
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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 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); | ||||
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r2775 | const qreal logValue = std::log10(value) / std::log10(m_logBaseY); | ||
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r2483 | 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; | ||||
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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(); | ||||
} | ||||
void LogXLogYPolarDomain::handleVerticalAxisBaseChanged(qreal baseY) | ||||
{ | ||||
m_logBaseY = baseY; | ||||
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r2775 | qreal logMinY = std::log10(m_minY) / std::log10(m_logBaseY); | ||
qreal logMaxY = std::log10(m_maxY) / std::log10(m_logBaseY); | ||||
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r2483 | m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY; | ||
m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY; | ||||
emit updated(); | ||||
} | ||||
// operators | ||||
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r2855 | bool Q_AUTOTEST_EXPORT operator== (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &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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r2855 | bool Q_AUTOTEST_EXPORT operator!= (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &domain2) | ||
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r2483 | { | ||
return !(domain1 == domain2); | ||||
} | ||||
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r2855 | QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXLogYPolarDomain &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_logxlogypolardomain_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||