qdatetimeaxis.cpp
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| text/x-c
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CppLexer
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r1717 | /**************************************************************************** | ||
** | ||||
** 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 "qdatetimeaxis.h" | ||||
#include "qdatetimeaxis_p.h" | ||||
#include "chartdatetimeaxisx_p.h" | ||||
#include "chartdatetimeaxisy_p.h" | ||||
#include "domain_p.h" | ||||
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r2125 | #include <float.h> | ||
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r1717 | #include <cmath> | ||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
/*! | ||||
\class QDateTimeAxis | ||||
\brief The QDateTimeAxis class is used for manipulating chart's axis. | ||||
\mainclass | ||||
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r1801 | The labels can be configured by setting an appropriate DateTime format. | ||
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r1927 | QDateTimeAxis works correctly with dates from 4714 BCE to 287396 CE | ||
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r1984 | There are also other limitiation related to QDateTime . Please refer to QDateTime documentation. | ||
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r1801 | QDateTimeAxis can be setup to show axis line with tick marks, grid lines and shades. | ||
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r1882 | |||
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r2040 | NOTE: QDateTimeAxis is disabled on ARM architecture. | ||
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r1984 | |||
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r1887 | \image api_datatime_axis.png | ||
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r1984 | QDateTimeAxis can be used with QLineSeries, QSplineSeries or QScatterSeries. | ||
To add a data point to the series QDateTime::toMSecsSinceEpoch() is used. | ||||
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r1882 | \code | ||
QLineSeries *series = new QLineSeries; | ||||
QDateTime xValue; | ||||
xValue.setDate(QDate(2012, 1 , 18)); | ||||
xValue.setTime(QTime(9, 34)); | ||||
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r1984 | qreal yValue = 12; | ||
series->append(xValue.toMSecsSinceEpoch(), yValue); | ||||
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r1882 | |||
xValue.setDate(QDate(2013, 5 , 11)); | ||||
xValue.setTime(QTime(11, 14)); | ||||
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r1984 | qreal yValue = 22; | ||
series->append(xValue.toMSecsSinceEpoch(), yValue); | ||||
\endcode | ||||
Adding the series to the chart and setting up the QDateTimeAxis. | ||||
\code | ||||
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r2097 | QChartView *chartView = new QChartView; | ||
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r1882 | chartView->chart()->addSeries(series); | ||
// ... | ||||
QDateTimeAxis *axisX = new QDateTimeAxis; | ||||
axisX->setFormat("dd-MM-yyyy h:mm"); | ||||
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r2108 | chartView->chart()->setAxisX(axisX, series); | ||
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r1882 | \endcode | ||
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r1717 | */ | ||
/*! | ||||
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r1801 | \qmlclass DateTimeAxis QDateTimeAxis | ||
\brief The DateTimeAxis element is used for manipulating chart's axes | ||||
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r2027 | \inherits AbstractAxis | ||
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r1801 | |||
The labels can be configured by setting an appropriate DateTime format. | ||||
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r1834 | Note that any date before 4714 BCE or after about 1.4 million CE may not be accurately stored. | ||
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r1801 | DateTimeAxis can be setup to show axis line with tick marks, grid lines and shades. | ||
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r1717 | */ | ||
/*! | ||||
\property QDateTimeAxis::min | ||||
Defines the minimum value on the axis. | ||||
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r1730 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
\qmlproperty real ValuesAxis::min | ||||
Defines the minimum value on the axis. | ||||
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r1730 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
\property QDateTimeAxis::max | ||||
Defines the maximum value on the axis. | ||||
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r1730 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
\qmlproperty real ValuesAxis::max | ||||
Defines the maximum value on the axis. | ||||
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r1730 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::minChanged(QDateTime min) | ||
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r1717 | Axis emits signal when \a min of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \qmlsignal ValuesAxis::onMinChanged(QDateTime min) | ||
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r1717 | Axis emits signal when \a min of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::maxChanged(QDateTime max) | ||
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r1717 | Axis emits signal when \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \qmlsignal ValuesAxis::onMaxChanged(QDateTime max) | ||
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r1717 | Axis emits signal when \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::rangeChanged(QDateTime min, QDateTime max) | ||
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r1717 | Axis emits signal when \a min or \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1812 | \property QDateTimeAxis::tickCount | ||
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r1717 | The number of tick marks for the axis. | ||
*/ | ||||
/*! | ||||
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r2027 | \qmlproperty int DateTimeAxis::tickCount | ||
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r1717 | The number of tick marks for the axis. | ||
*/ | ||||
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r2027 | /*! | ||
\property QDateTimeAxis::format | ||||
The format string that is used when creating label for the axis out of a QDateTime object. | ||||
Check QDateTime documentation for information on how the string should be defined. | ||||
*/ | ||||
/*! | ||||
\qmlproperty string DateTimeAxis::format | ||||
The format string that is used when creating label for the axis out of a QDateTime object. | ||||
Check QDateTime documentation for information on how the string should be defined. | ||||
*/ | ||||
/*! | ||||
\fn void QDateTimeAxis::formatChanged(QString format) | ||||
Axis emits signal when \a format of the axis has changed. | ||||
*/ | ||||
/*! | ||||
\qmlsignal DateTimeAxis::onFormatChanged(string format) | ||||
Axis emits signal when \a format of the axis has changed. | ||||
*/ | ||||
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r1717 | /*! | ||
Constructs an axis object which is a child of \a parent. | ||||
*/ | ||||
QDateTimeAxis::QDateTimeAxis(QObject *parent) : | ||||
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r2097 | QAbstractAxis(*new QDateTimeAxisPrivate(this), parent) | ||
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r1717 | { | ||
} | ||||
/*! | ||||
\internal | ||||
*/ | ||||
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r2097 | QDateTimeAxis::QDateTimeAxis(QDateTimeAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent) | ||
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r1717 | { | ||
} | ||||
/*! | ||||
Destroys the object | ||||
*/ | ||||
QDateTimeAxis::~QDateTimeAxis() | ||||
{ | ||||
} | ||||
void QDateTimeAxis::setMin(QDateTime min) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (min.isValid()) | ||
setRange(min, qMax(d->m_max, min)); | ||||
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r1717 | } | ||
QDateTime QDateTimeAxis::min() const | ||||
{ | ||||
Q_D(const QDateTimeAxis); | ||||
return d->m_min; | ||||
} | ||||
void QDateTimeAxis::setMax(QDateTime max) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (max.isValid()) | ||
setRange(qMin(d->m_min, max), max); | ||||
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r1717 | } | ||
QDateTime QDateTimeAxis::max() const | ||||
{ | ||||
Q_D(const QDateTimeAxis); | ||||
return d->m_max; | ||||
} | ||||
/*! | ||||
Sets range from \a min to \a max on the axis. | ||||
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r1730 | If min is greater than max then this function returns without making any changes. | ||
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r1717 | */ | ||
void QDateTimeAxis::setRange(QDateTime min, QDateTime max) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (!min.isValid() || !max.isValid() || min > max) | ||
return; | ||||
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r1717 | |||
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r1728 | bool changed = false; | ||
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r1717 | if (d->m_min != min) { | ||
d->m_min = min; | ||||
changed = true; | ||||
emit minChanged(min); | ||||
} | ||||
if (d->m_max != max) { | ||||
d->m_max = max; | ||||
changed = true; | ||||
emit maxChanged(max); | ||||
} | ||||
if (changed) { | ||||
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r2097 | emit rangeChanged(d->m_min, d->m_max); | ||
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r1717 | d->emitUpdated(); | ||
} | ||||
} | ||||
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r1801 | void QDateTimeAxis::setFormat(QString format) | ||
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r1717 | { | ||
Q_D(QDateTimeAxis); | ||||
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r2027 | if (d->m_format != format) { | ||
d->m_format = format; | ||||
emit formatChanged(format); | ||||
} | ||||
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r1717 | } | ||
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r1801 | QString QDateTimeAxis::format() const | ||
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r1717 | { | ||
Q_D(const QDateTimeAxis); | ||||
return d->m_format; | ||||
} | ||||
/*! | ||||
Sets \a count for ticks on the axis. | ||||
*/ | ||||
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r1801 | void QDateTimeAxis::setTickCount(int count) | ||
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r2097 | { | ||
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r1717 | Q_D(QDateTimeAxis); | ||
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r2097 | if (d->m_tickCount != count && count >= 2) { | ||
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r1717 | d->m_tickCount = count; | ||
d->emitUpdated(); | ||||
} | ||||
} | ||||
/*! | ||||
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r1812 | \fn int QDateTimeAxis::tickCount() const | ||
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r1717 | Return number of ticks on the axis | ||
*/ | ||||
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r1801 | int QDateTimeAxis::tickCount() const | ||
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r1717 | { | ||
Q_D(const QDateTimeAxis); | ||||
return d->m_tickCount; | ||||
} | ||||
/*! | ||||
Returns the type of the axis | ||||
*/ | ||||
QAbstractAxis::AxisType QDateTimeAxis::type() const | ||||
{ | ||||
return AxisTypeDateTime; | ||||
} | ||||
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
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r2104 | QDateTimeAxisPrivate::QDateTimeAxisPrivate(QDateTimeAxis *q) | ||
: QAbstractAxisPrivate(q), | ||||
m_min(QDateTime::fromMSecsSinceEpoch(0)), | ||||
m_max(QDateTime::fromMSecsSinceEpoch(0)), | ||||
m_tickCount(5) | ||||
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r1717 | { | ||
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r1887 | m_format = "dd-MM-yyyy\nh:mm"; | ||
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r1717 | } | ||
QDateTimeAxisPrivate::~QDateTimeAxisPrivate() | ||||
{ | ||||
} | ||||
void QDateTimeAxisPrivate::handleDomainUpdated() | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
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r2104 | Domain *domain = qobject_cast<Domain *>(sender()); | ||
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r1717 | Q_ASSERT(domain); | ||
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r2097 | if (orientation() == Qt::Horizontal) | ||
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r1717 | q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minX()), QDateTime::fromMSecsSinceEpoch(domain->maxX())); | ||
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r2097 | else if (orientation() == Qt::Vertical) | ||
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r1717 | q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minY()), QDateTime::fromMSecsSinceEpoch(domain->maxY())); | ||
} | ||||
void QDateTimeAxisPrivate::setMin(const QVariant &min) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (min.canConvert(QVariant::DateTime)) | ||||
q->setMin(min.toDateTime()); | ||||
} | ||||
void QDateTimeAxisPrivate::setMax(const QVariant &max) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (max.canConvert(QVariant::DateTime)) | ||||
q->setMax(max.toDateTime()); | ||||
} | ||||
void QDateTimeAxisPrivate::setRange(const QVariant &min, const QVariant &max) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (min.canConvert(QVariant::DateTime) && max.canConvert(QVariant::DateTime)) | ||||
q->setRange(min.toDateTime(), max.toDateTime()); | ||||
} | ||||
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r2104 | ChartAxis *QDateTimeAxisPrivate::createGraphics(ChartPresenter *presenter) | ||
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r1717 | { | ||
Q_Q(QDateTimeAxis); | ||||
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r2097 | if (m_orientation == Qt::Vertical) | ||
return new ChartDateTimeAxisY(q, presenter); | ||||
return new ChartDateTimeAxisX(q, presenter); | ||||
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r1717 | } | ||
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r2104 | void QDateTimeAxisPrivate::intializeDomain(Domain *domain) | ||
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r1717 | { | ||
Q_Q(QDateTimeAxis); | ||||
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r2097 | if (m_max == m_min) { | ||
if (m_orientation == Qt::Vertical) | ||||
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r1717 | q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minY()), QDateTime::fromMSecsSinceEpoch(domain->maxY())); | ||
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r2097 | else | ||
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r1717 | q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minX()), QDateTime::fromMSecsSinceEpoch(domain->maxX())); | ||
} else { | ||||
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r2097 | if (m_orientation == Qt::Vertical) | ||
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r1717 | domain->setRangeY(m_min.toMSecsSinceEpoch(), m_max.toMSecsSinceEpoch()); | ||
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r2097 | else | ||
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r1717 | domain->setRangeX(m_min.toMSecsSinceEpoch(), m_max.toMSecsSinceEpoch()); | ||
} | ||||
} | ||||
#include "moc_qdatetimeaxis.cpp" | ||||
#include "moc_qdatetimeaxis_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||