qlogvalueaxis.cpp
325 lines
| 7.4 KiB
| text/x-c
|
CppLexer
Marek Rosa
|
r2274 | /**************************************************************************** | ||
| ** | ||||
| ** 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 "qlogvalueaxis.h" | ||||
| #include "qlogvalueaxis_p.h" | ||||
| #include "chartlogvalueaxisx_p.h" | ||||
| #include "chartlogvalueaxisy_p.h" | ||||
|
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r2275 | #include "abstractdomain_p.h" | ||
|
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r2274 | #include <float.h> | ||
| #include <cmath> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| /*! | ||||
| \class QLogValueAxis | ||||
| \brief The QLogValueAxis class is used for manipulating chart's axis. | ||||
| \mainclass | ||||
| */ | ||||
| /*! | ||||
| \qmlclass DateTimeAxis QLogValueAxis | ||||
| \brief The DateTimeAxis element is used for manipulating chart's axes | ||||
| \inherits AbstractAxis | ||||
| */ | ||||
| /*! | ||||
| \property QLogValueAxis::min | ||||
| Defines the minimum value on the axis. | ||||
| When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||||
| */ | ||||
| /*! | ||||
| \qmlproperty real ValuesAxis::min | ||||
| Defines the minimum value on the axis. | ||||
| When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||||
| */ | ||||
| /*! | ||||
| \property QLogValueAxis::max | ||||
| Defines the maximum value on the axis. | ||||
| When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||||
| */ | ||||
| /*! | ||||
| \qmlproperty real ValuesAxis::max | ||||
| Defines the maximum value on the axis. | ||||
| When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||||
| */ | ||||
| /*! | ||||
| \fn void QLogValueAxis::minChanged(qreal min) | ||||
| Axis emits signal when \a min of axis has changed. | ||||
| */ | ||||
| /*! | ||||
| \qmlsignal ValuesAxis::onMinChanged(qreal min) | ||||
| Axis emits signal when \a min of axis has changed. | ||||
| */ | ||||
| /*! | ||||
| \fn void QLogValueAxis::maxChanged(qreal max) | ||||
| Axis emits signal when \a max of axis has changed. | ||||
| */ | ||||
| /*! | ||||
| \qmlsignal ValuesAxis::onMaxChanged(qreal max) | ||||
| Axis emits signal when \a max of axis has changed. | ||||
| */ | ||||
| /*! | ||||
| \fn void QLogValueAxis::rangeChanged(qreal min, qreal max) | ||||
| Axis emits signal when \a min or \a max of axis has changed. | ||||
| */ | ||||
| /*! | ||||
| Constructs an axis object which is a child of \a parent. | ||||
| */ | ||||
| QLogValueAxis::QLogValueAxis(QObject *parent) : | ||||
| QAbstractAxis(*new QLogValueAxisPrivate(this), parent) | ||||
| { | ||||
| } | ||||
| /*! | ||||
| \internal | ||||
| */ | ||||
| QLogValueAxis::QLogValueAxis(QLogValueAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent) | ||||
| { | ||||
| } | ||||
| /*! | ||||
| Destroys the object | ||||
| */ | ||||
| QLogValueAxis::~QLogValueAxis() | ||||
| { | ||||
|
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r2304 | Q_D(QLogValueAxis); | ||
| if (d->m_chart) | ||||
| d->m_chart->removeAxis(this); | ||||
|
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r2274 | } | ||
| void QLogValueAxis::setMin(qreal min) | ||||
| { | ||||
| Q_D(QLogValueAxis); | ||||
| setRange(min, qMax(d->m_max, min)); | ||||
| } | ||||
| qreal QLogValueAxis::min() const | ||||
| { | ||||
| Q_D(const QLogValueAxis); | ||||
| return d->m_min; | ||||
| } | ||||
| void QLogValueAxis::setMax(qreal max) | ||||
| { | ||||
| Q_D(QLogValueAxis); | ||||
| setRange(qMin(d->m_min, max), max); | ||||
| } | ||||
| qreal QLogValueAxis::max() const | ||||
| { | ||||
| Q_D(const QLogValueAxis); | ||||
| return d->m_max; | ||||
| } | ||||
| /*! | ||||
| Sets range from \a min to \a max on the axis. | ||||
| If min is greater than max then this function returns without making any changes. | ||||
| */ | ||||
| void QLogValueAxis::setRange(qreal min, qreal max) | ||||
| { | ||||
| Q_D(QLogValueAxis); | ||||
| bool changed = false; | ||||
| if (min > max) | ||||
| return; | ||||
| if (min > 0) { | ||||
| if (!qFuzzyCompare(d->m_min, min)) { | ||||
| d->m_min = min; | ||||
| changed = true; | ||||
| emit minChanged(min); | ||||
| } | ||||
| if (!qFuzzyCompare(d->m_max, max)) { | ||||
| d->m_max = max; | ||||
| changed = true; | ||||
| emit maxChanged(max); | ||||
| } | ||||
| if (changed) { | ||||
| emit rangeChanged(min, max); | ||||
| emit d->rangeChanged(min,max); | ||||
| } | ||||
| } | ||||
| } | ||||
| void QLogValueAxis::setLabelFormat(const QString &format) | ||||
| { | ||||
| Q_D(QLogValueAxis); | ||||
| d->m_format = format; | ||||
|
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r2319 | emit labelFormatChanged(format); | ||
|
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r2274 | } | ||
| QString QLogValueAxis::labelFormat() const | ||||
| { | ||||
| Q_D(const QLogValueAxis); | ||||
| return d->m_format; | ||||
| } | ||||
| void QLogValueAxis::setBase(qreal base) | ||||
| { | ||||
| // check if base is correct | ||||
|
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r2283 | if (qFuzzyCompare(base, 1)) | ||
|
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r2274 | return; | ||
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r2283 | if (base > 0) { | ||
| Q_D(QLogValueAxis); | ||||
| d->m_base = base; | ||||
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r2290 | emit baseChanged(base); | ||
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r2283 | } | ||
|
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r2274 | } | ||
| qreal QLogValueAxis::base() const | ||||
| { | ||||
| Q_D(const QLogValueAxis); | ||||
| return d->m_base; | ||||
| } | ||||
| /*! | ||||
| Returns the type of the axis | ||||
| */ | ||||
| QAbstractAxis::AxisType QLogValueAxis::type() const | ||||
| { | ||||
| return AxisTypeLogValue; | ||||
| } | ||||
| ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
| QLogValueAxisPrivate::QLogValueAxisPrivate(QLogValueAxis *q) | ||||
| : QAbstractAxisPrivate(q), | ||||
| m_min(1), | ||||
|
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r2304 | m_max(1), | ||
|
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r2274 | m_base(10), | ||
| m_format(QString::null) | ||||
| { | ||||
| } | ||||
| QLogValueAxisPrivate::~QLogValueAxisPrivate() | ||||
| { | ||||
| } | ||||
| void QLogValueAxisPrivate::setMin(const QVariant &min) | ||||
| { | ||||
| Q_Q(QLogValueAxis); | ||||
| bool ok; | ||||
| qreal value = min.toReal(&ok); | ||||
| if (ok) | ||||
| q->setMin(value); | ||||
| } | ||||
| void QLogValueAxisPrivate::setMax(const QVariant &max) | ||||
| { | ||||
| Q_Q(QLogValueAxis); | ||||
| bool ok; | ||||
| qreal value = max.toReal(&ok); | ||||
| if (ok) | ||||
| q->setMax(value); | ||||
| } | ||||
| void QLogValueAxisPrivate::setRange(const QVariant &min, const QVariant &max) | ||||
| { | ||||
| Q_Q(QLogValueAxis); | ||||
| bool ok1; | ||||
| bool ok2; | ||||
| qreal value1 = min.toReal(&ok1); | ||||
| qreal value2 = max.toReal(&ok2); | ||||
| if (ok1 && ok2) | ||||
| q->setRange(value1, value2); | ||||
| } | ||||
| void QLogValueAxisPrivate::setRange(qreal min, qreal max) | ||||
| { | ||||
| Q_Q(QLogValueAxis); | ||||
| bool changed = false; | ||||
| if (min > max) | ||||
| return; | ||||
| if (min > 0) { | ||||
| if (!qFuzzyCompare(m_min, min)) { | ||||
| m_min = min; | ||||
| changed = true; | ||||
| emit q->minChanged(min); | ||||
| } | ||||
| if (!qFuzzyCompare(m_max, max)) { | ||||
| m_max = max; | ||||
| changed = true; | ||||
| emit q->maxChanged(max); | ||||
| } | ||||
| if (changed) { | ||||
| emit q->rangeChanged(min, max); | ||||
| emit rangeChanged(min,max); | ||||
| } | ||||
| } | ||||
| } | ||||
| void QLogValueAxisPrivate::initializeGraphics(QGraphicsItem* parent) | ||||
| { | ||||
| Q_Q(QLogValueAxis); | ||||
| ChartAxis* axis(0); | ||||
| if (orientation() == Qt::Vertical) | ||||
| axis = new ChartLogValueAxisY(q,parent); | ||||
| if (orientation() == Qt::Horizontal) | ||||
| axis = new ChartLogValueAxisX(q,parent); | ||||
| m_item.reset(axis); | ||||
| QAbstractAxisPrivate::initializeGraphics(parent); | ||||
| } | ||||
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r2275 | void QLogValueAxisPrivate::initializeDomain(AbstractDomain *domain) | ||
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r2274 | { | ||
| if (orientation() == Qt::Vertical) { | ||||
| if(!qFuzzyCompare(m_max, m_min)) { | ||||
| domain->setRangeY(m_min, m_max); | ||||
| } | ||||
|
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r2304 | else if ( domain->minY() > 0) { | ||
| setRange(domain->minY(), domain->maxY()); | ||||
| } else { | ||||
| domain->setRangeY(m_min, domain->maxY()); | ||||
|
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r2274 | } | ||
| } | ||||
| if (orientation() == Qt::Horizontal) { | ||||
| if(!qFuzzyCompare(m_max, m_min)) { | ||||
| domain->setRangeX(m_min, m_max); | ||||
| } | ||||
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r2304 | else if (domain->minX() > 0){ | ||
| setRange(domain->minX(), domain->maxX()); | ||||
| } else { | ||||
| domain->setRangeX(m_min, domain->maxX()); | ||||
|
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r2274 | } | ||
| } | ||||
| } | ||||
| #include "moc_qlogvalueaxis.cpp" | ||||
| #include "moc_qlogvalueaxis_p.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||