logxypolardomain.cpp
238 lines
| 7.1 KiB
| text/x-c
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CppLexer
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r2483 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2013 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 "logxypolardomain_p.h" | ||||
#include "qabstractaxis_p.h" | ||||
#include "qlogvalueaxis.h" | ||||
#include <qmath.h> | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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; | ||||
qreal logMinX = log10(m_minX) / log10(m_logBaseX); | ||||
qreal logMaxX = log10(m_maxX) / 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; | ||||
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(); | ||
|
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); | ||||
const qreal logValue = log10(value) / log10(m_logBaseX); | ||||
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; | ||||
qreal logMinX = log10(m_minX) / log10(m_logBaseX); | ||||
qreal logMaxX = log10(m_maxX) / log10(m_logBaseX); | ||||
m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX; | ||||
m_logRightX = logMinX > logMaxX ? logMinX : logMaxX; | ||||
emit updated(); | ||||
} | ||||
// operators | ||||
bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const LogXYPolarDomain &domain1, const LogXYPolarDomain &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 LogXYPolarDomain &domain1, const LogXYPolarDomain &domain2) | ||||
{ | ||||
return !(domain1 == domain2); | ||||
} | ||||
QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXYPolarDomain &domain) | ||||
{ | ||||
dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
return dbg.maybeSpace(); | ||||
} | ||||
#include "moc_logxypolardomain_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||