qlogvalueaxis.cpp
397 lines
| 10.0 KiB
| text/x-c
|
CppLexer
Marek Rosa
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r2274 | /**************************************************************************** | ||
| ** | ||||
Titta Heikkala
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r2776 | ** Copyright (C) 2015 The Qt Company Ltd | ||
|
Marek Rosa
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r2274 | ** All rights reserved. | ||
|
Titta Heikkala
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r2776 | ** For any questions to The Qt Company, please use contact form at http://qt.io | ||
|
Marek Rosa
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r2274 | ** | ||
|
Titta Heikkala
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r2740 | ** This file is part of the Qt Charts module. | ||
|
Marek Rosa
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r2274 | ** | ||
|
Titta Heikkala
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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 | ||||
|
Titta Heikkala
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r2776 | ** agreement between you and The Qt Company. | ||
|
Marek Rosa
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r2274 | ** | ||
| ** If you have questions regarding the use of this file, please use | ||||
|
Titta Heikkala
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r2740 | ** contact form at http://qt.io | ||
|
Marek Rosa
|
r2274 | ** | ||
| ****************************************************************************/ | ||||
|
Titta Heikkala
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r2714 | #include <QtCharts/QLogValueAxis> | ||
| #include <private/qlogvalueaxis_p.h> | ||||
| #include <private/chartlogvalueaxisx_p.h> | ||||
| #include <private/chartlogvalueaxisy_p.h> | ||||
| #include <private/polarchartlogvalueaxisangular_p.h> | ||||
| #include <private/polarchartlogvalueaxisradial_p.h> | ||||
| #include <private/abstractdomain_p.h> | ||||
|
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r2274 | #include <float.h> | ||
| #include <cmath> | ||||
Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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Marek Rosa
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r2274 | /*! | ||
| \class QLogValueAxis | ||||
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Titta Heikkala
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r2639 | \inmodule Qt Charts | ||
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Marek Rosa
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r2274 | \brief The QLogValueAxis class is used for manipulating chart's axis. | ||
Miikka Heikkinen
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r2430 | |||
| \note If a QLogValueAxis is attached to a series with one or more points with | ||||
| negative or zero values on the associated dimension, the series will not be | ||||
| plotted at all. This is particularly relevant when XYModelMappers are used, | ||||
| since empty cells in models typically contain zero values. | ||||
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Marek Rosa
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r2274 | */ | ||
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Titta Heikkala
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r2639 | /*! | ||
| \qmltype LogValueAxis | ||||
| \instantiates QLogValueAxis | ||||
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Titta Heikkala
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r2712 | \inqmlmodule QtCharts | ||
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Titta Heikkala
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r2639 | |||
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r2712 | \brief The LogValueAxis element is used for manipulating chart's axes. | ||
| \inherits AbstractAxis | ||||
|
Miikka Heikkinen
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r2493 | |||
|
Titta Heikkala
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r2712 | \note If a LogValueAxis is attached to a series with one or more points with | ||
| negative or zero values on the associated dimension, the series will not be | ||||
| plotted at all. This is particularly relevant when XYModelMappers are used, | ||||
| since empty cells in models typically contain zero values. | ||||
|
Miikka Heikkinen
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r2493 | */ | ||
|
Marek Rosa
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r2274 | /*! | ||
| \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. | ||||
|
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r2493 | Value has to be greater than 0. | ||
| */ | ||||
| /*! | ||||
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r2494 | \qmlproperty real LogValueAxis::min | ||
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Miikka Heikkinen
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r2493 | Defines the minimum value on the axis. | ||
| When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||||
| Value has to be greater than 0. | ||||
|
Marek Rosa
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r2274 | */ | ||
| /*! | ||||
| \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. | ||||
|
Miikka Heikkinen
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r2493 | Value has to be greater than 0. | ||
| */ | ||||
| /*! | ||||
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r2494 | \qmlproperty real LogValueAxis::max | ||
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Miikka Heikkinen
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r2493 | Defines the maximum value on the axis. | ||
| When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||||
| Value has to be greater than 0. | ||||
|
Marek Rosa
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r2274 | */ | ||
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r2338 | |||
| /*! | ||||
| \property QLogValueAxis::base | ||||
| Defines the base of the logarithm. | ||||
|
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r2493 | Value has to be greater than 0 and not equal 1 | ||
| */ | ||||
| /*! | ||||
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r2494 | \qmlproperty real LogValueAxis::base | ||
|
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r2493 | Defines the maximum value on the axis. | ||
| Defines the base of the logarithm. | ||||
| Value has to be greater than 0 and not equal 1 | ||||
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r2338 | */ | ||
| /*! | ||||
| \property QLogValueAxis::labelFormat | ||||
| Defines the label format of the axis. | ||||
| Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c | ||||
| See QString::sprintf() for additional details. | ||||
| */ | ||||
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Miikka Heikkinen
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r2493 | /*! | ||
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r2494 | \qmlproperty real LogValueAxis::labelFormat | ||
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r2493 | Defines the label format of the axis. | ||
| Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c | ||||
| See QString::sprintf() for additional details. | ||||
| */ | ||||
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Marek Rosa
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r2274 | |||
| /*! | ||||
| \fn void QLogValueAxis::minChanged(qreal min) | ||||
| Axis emits signal when \a min of axis has changed. | ||||
| */ | ||||
|
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r2493 | /*! | ||
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r2494 | \qmlsignal LogValueAxis::onMinChanged(qreal min) | ||
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r2493 | Axis emits signal when \a min of axis has changed. | ||
| */ | ||||
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r2274 | |||
| /*! | ||||
| \fn void QLogValueAxis::maxChanged(qreal max) | ||||
| Axis emits signal when \a max of axis has changed. | ||||
| */ | ||||
|
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r2493 | /*! | ||
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r2494 | \qmlsignal LogValueAxis::onMaxChanged(qreal max) | ||
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r2493 | Axis emits signal when \a max of axis has changed. | ||
| */ | ||||
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Marek Rosa
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r2274 | |||
| /*! | ||||
| \fn void QLogValueAxis::rangeChanged(qreal min, qreal max) | ||||
| Axis emits signal when \a min or \a max of axis has changed. | ||||
| */ | ||||
|
Marek Rosa
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r2338 | /*! | ||
| \fn void QLogValueAxis::labelFormatChanged(const QString &format) | ||||
| Axis emits signal when \a format of axis labels has changed. | ||||
| */ | ||||
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Miikka Heikkinen
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r2493 | /*! | ||
| \qmlsignal LogValueAxis::labelFormatChanged(const QString &format) | ||||
| Axis emits signal when \a format of axis labels has changed. | ||||
| */ | ||||
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Marek Rosa
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r2338 | |||
| /*! | ||||
| \fn void QLogValueAxis::baseChanged(qreal base) | ||||
| Axis emits signal when \a base of logarithm of the axis has changed. | ||||
| */ | ||||
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Miikka Heikkinen
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r2493 | /*! | ||
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r2494 | \qmlsignal LogValueAxis::baseChanged(qreal base) | ||
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Miikka Heikkinen
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r2493 | Axis emits signal when \a base of logarithm of the axis has changed. | ||
| */ | ||||
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r2338 | |||
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r2274 | /*! | ||
| 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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Marek Rosa
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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) | ||||
Michal Klocek
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r2333 | { | ||
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r2274 | 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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Marek Rosa
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r2290 | emit baseChanged(base); | ||
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Marek Rosa
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r2283 | } | ||
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Marek Rosa
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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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Marek Rosa
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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 rangeChanged(min,max); | ||||
|
Michal Klocek
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r2333 | emit q->rangeChanged(min, max); | ||
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Marek Rosa
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r2274 | } | ||
| } | ||||
| } | ||||
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Miikka Heikkinen
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r2483 | void QLogValueAxisPrivate::initializeGraphics(QGraphicsItem *parent) | ||
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Marek Rosa
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r2274 | { | ||
| Q_Q(QLogValueAxis); | ||||
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Miikka Heikkinen
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r2483 | ChartAxisElement *axis(0); | ||
| if (m_chart->chartType() == QChart::ChartTypeCartesian) { | ||||
| if (orientation() == Qt::Vertical) | ||||
| axis = new ChartLogValueAxisY(q,parent); | ||||
| if (orientation() == Qt::Horizontal) | ||||
| axis = new ChartLogValueAxisX(q,parent); | ||||
| } | ||||
| if (m_chart->chartType() == QChart::ChartTypePolar) { | ||||
| if (orientation() == Qt::Vertical) | ||||
| axis = new PolarChartLogValueAxisRadial(q, parent); | ||||
| if (orientation() == Qt::Horizontal) | ||||
| axis = new PolarChartLogValueAxisAngular(q, parent); | ||||
| } | ||||
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r2274 | |||
| m_item.reset(axis); | ||||
| QAbstractAxisPrivate::initializeGraphics(parent); | ||||
| } | ||||
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r2275 | void QLogValueAxisPrivate::initializeDomain(AbstractDomain *domain) | ||
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Marek Rosa
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r2274 | { | ||
| if (orientation() == Qt::Vertical) { | ||||
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r2483 | if (!qFuzzyCompare(m_max, m_min)) { | ||
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r2274 | domain->setRangeY(m_min, m_max); | ||
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Marek Rosa
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r2355 | } else if ( domain->minY() > 0) { | ||
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r2304 | setRange(domain->minY(), domain->maxY()); | ||
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Marek Rosa
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r2355 | } else if (domain->maxY() > 0) { | ||
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r2304 | domain->setRangeY(m_min, domain->maxY()); | ||
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r2355 | } else { | ||
| domain->setRangeY(1, 10); | ||||
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Marek Rosa
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r2274 | } | ||
| } | ||||
| if (orientation() == Qt::Horizontal) { | ||||
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r2483 | if (!qFuzzyCompare(m_max, m_min)) { | ||
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r2274 | domain->setRangeX(m_min, m_max); | ||
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Marek Rosa
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r2355 | } else if (domain->minX() > 0){ | ||
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Marek Rosa
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r2304 | setRange(domain->minX(), domain->maxX()); | ||
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Marek Rosa
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r2355 | } else if (domain->maxX() > 0) { | ||
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Marek Rosa
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r2304 | domain->setRangeX(m_min, domain->maxX()); | ||
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Marek Rosa
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r2355 | } else { | ||
| domain->setRangeX(1, 10); | ||||
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Marek Rosa
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r2274 | } | ||
| } | ||||
| } | ||||
| #include "moc_qlogvalueaxis.cpp" | ||||
| #include "moc_qlogvalueaxis_p.cpp" | ||||
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Titta Heikkala
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r2712 | QT_CHARTS_END_NAMESPACE | ||