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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdatetimeaxis.h"
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#include "qdatetimeaxis_p.h"
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#include "chartdatetimeaxisx_p.h"
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#include "chartdatetimeaxisy_p.h"
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#include "abstractdomain_p.h"
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#include "qchart.h"
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#include <float.h>
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#include <cmath>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QDateTimeAxis
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\brief The QDateTimeAxis class is used for manipulating chart's axis.
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\mainclass
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The labels can be configured by setting an appropriate DateTime format.
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QDateTimeAxis works correctly with dates from 4714 BCE to 287396 CE
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There are also other limitiation related to QDateTime . Please refer to QDateTime documentation.
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QDateTimeAxis can be setup to show axis line with tick marks, grid lines and shades.
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Note: QDateTimeAxis is disabled on ARM architecture.
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\image api_datatime_axis.png
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QDateTimeAxis can be used with QLineSeries, QSplineSeries or QScatterSeries.
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To add a data point to the series QDateTime::toMSecsSinceEpoch() is used.
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\code
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QLineSeries *series = new QLineSeries;
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QDateTime xValue;
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xValue.setDate(QDate(2012, 1 , 18));
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xValue.setTime(QTime(9, 34));
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qreal yValue = 12;
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series->append(xValue.toMSecsSinceEpoch(), yValue);
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xValue.setDate(QDate(2013, 5 , 11));
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xValue.setTime(QTime(11, 14));
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qreal yValue = 22;
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series->append(xValue.toMSecsSinceEpoch(), yValue);
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\endcode
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Adding the series to the chart and setting up the QDateTimeAxis.
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\code
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QChartView *chartView = new QChartView;
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chartView->chart()->addSeries(series);
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// ...
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QDateTimeAxis *axisX = new QDateTimeAxis;
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axisX->setFormat("dd-MM-yyyy h:mm");
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chartView->chart()->setAxisX(axisX, series);
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\endcode
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*/
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/*!
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\qmlclass DateTimeAxis QDateTimeAxis
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\brief The DateTimeAxis element is used for manipulating chart's axes
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\inherits AbstractAxis
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The labels can be configured by setting an appropriate DateTime format.
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Note that any date before 4714 BCE or after about 1.4 million CE may not be accurately stored.
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DateTimeAxis can be setup to show axis line with tick marks, grid lines and shades.
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*/
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/*!
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\property QDateTimeAxis::min
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Defines the minimum value on the axis.
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When setting this property the max is adjusted if necessary, to ensure that the range remains valid.
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*/
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/*!
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\qmlproperty real ValuesAxis::min
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Defines the minimum value on the axis.
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When setting this property the max is adjusted if necessary, to ensure that the range remains valid.
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*/
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/*!
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\property QDateTimeAxis::max
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Defines the maximum value on the axis.
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When setting this property the min is adjusted if necessary, to ensure that the range remains valid.
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*/
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/*!
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\qmlproperty real ValuesAxis::max
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Defines the maximum value on the axis.
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When setting this property the min is adjusted if necessary, to ensure that the range remains valid.
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*/
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/*!
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\fn void QDateTimeAxis::minChanged(QDateTime min)
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Axis emits signal when \a min of axis has changed.
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*/
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/*!
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\qmlsignal ValuesAxis::onMinChanged(QDateTime min)
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Axis emits signal when \a min of axis has changed.
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*/
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/*!
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\fn void QDateTimeAxis::maxChanged(QDateTime max)
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Axis emits signal when \a max of axis has changed.
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*/
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/*!
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\qmlsignal ValuesAxis::onMaxChanged(QDateTime max)
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Axis emits signal when \a max of axis has changed.
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*/
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/*!
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\fn void QDateTimeAxis::rangeChanged(QDateTime min, QDateTime max)
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Axis emits signal when \a min or \a max of axis has changed.
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*/
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/*!
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\property QDateTimeAxis::tickCount
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The number of tick marks for the axis.
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*/
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/*!
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\qmlproperty int DateTimeAxis::tickCount
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The number of tick marks for the axis.
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*/
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/*!
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\property QDateTimeAxis::format
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The format string that is used when creating label for the axis out of a QDateTime object.
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Check QDateTime documentation for information on how the string should be defined.
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*/
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/*!
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\qmlproperty string DateTimeAxis::format
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The format string that is used when creating label for the axis out of a QDateTime object.
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Check QDateTime documentation for information on how the string should be defined.
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*/
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/*!
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\fn void QDateTimeAxis::tickCountChanged(int tickCount)
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Axis emits signal when \a tickCount number on axis have changed.
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*/
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/*!
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\qmlsignal DateTimeAxis::tickCountChanged(int tickCount)
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Axis emits signal when \a tickCount number on axis have changed.
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*/
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/*!
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\fn void QDateTimeAxis::formatChanged(QString format)
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Axis emits signal when \a format of the axis has changed.
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*/
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/*!
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\qmlsignal DateTimeAxis::onFormatChanged(string format)
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Axis emits signal when \a format of the axis has changed.
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*/
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/*!
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Constructs an axis object which is a child of \a parent.
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*/
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QDateTimeAxis::QDateTimeAxis(QObject *parent) :
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QAbstractAxis(*new QDateTimeAxisPrivate(this), parent)
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{
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}
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/*!
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\internal
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*/
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QDateTimeAxis::QDateTimeAxis(QDateTimeAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent)
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{
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}
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/*!
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Destroys the object
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*/
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QDateTimeAxis::~QDateTimeAxis()
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{
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Q_D(QDateTimeAxis);
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if (d->m_chart)
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d->m_chart->removeAxis(this);
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}
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void QDateTimeAxis::setMin(QDateTime min)
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{
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Q_D(QDateTimeAxis);
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if (min.isValid())
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d->setRange(min.toMSecsSinceEpoch(), qMax(d->m_max, qreal(min.toMSecsSinceEpoch())));
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}
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QDateTime QDateTimeAxis::min() const
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{
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Q_D(const QDateTimeAxis);
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return QDateTime::fromMSecsSinceEpoch(d->m_min);
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}
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void QDateTimeAxis::setMax(QDateTime max)
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{
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Q_D(QDateTimeAxis);
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if (max.isValid())
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d->setRange(qMin(d->m_min, qreal(max.toMSecsSinceEpoch())), max.toMSecsSinceEpoch());
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}
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QDateTime QDateTimeAxis::max() const
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{
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Q_D(const QDateTimeAxis);
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return QDateTime::fromMSecsSinceEpoch(d->m_max);
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}
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/*!
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Sets range from \a min to \a max on the axis.
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If min is greater than max then this function returns without making any changes.
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*/
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void QDateTimeAxis::setRange(QDateTime min, QDateTime max)
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{
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Q_D(QDateTimeAxis);
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if (!min.isValid() || !max.isValid() || min > max)
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return;
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d->setRange(min.toMSecsSinceEpoch(),max.toMSecsSinceEpoch());
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}
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void QDateTimeAxis::setFormat(QString format)
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{
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Q_D(QDateTimeAxis);
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if (d->m_format != format) {
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d->m_format = format;
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emit formatChanged(format);
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}
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}
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QString QDateTimeAxis::format() const
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{
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Q_D(const QDateTimeAxis);
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return d->m_format;
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}
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/*!
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Sets \a count for ticks on the axis.
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*/
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void QDateTimeAxis::setTickCount(int count)
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{
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Q_D(QDateTimeAxis);
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if (d->m_tickCount != count && count >= 2) {
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d->m_tickCount = count;
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emit tickCountChanged(count);
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}
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}
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/*!
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\fn int QDateTimeAxis::tickCount() const
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Return number of ticks on the axis
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*/
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int QDateTimeAxis::tickCount() const
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{
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Q_D(const QDateTimeAxis);
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return d->m_tickCount;
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}
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/*!
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Returns the type of the axis
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*/
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QAbstractAxis::AxisType QDateTimeAxis::type() const
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{
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return AxisTypeDateTime;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QDateTimeAxisPrivate::QDateTimeAxisPrivate(QDateTimeAxis *q)
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: QAbstractAxisPrivate(q),
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m_min(0),
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m_max(0),
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m_tickCount(5)
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{
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m_format = "dd-MM-yyyy\nh:mm";
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}
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QDateTimeAxisPrivate::~QDateTimeAxisPrivate()
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{
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}
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void QDateTimeAxisPrivate::setRange(qreal min,qreal max)
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{
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Q_Q(QDateTimeAxis);
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bool changed = false;
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if (m_min != min) {
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m_min = min;
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changed = true;
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emit q->minChanged(QDateTime::fromMSecsSinceEpoch(min));
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}
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if (m_max != max) {
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m_max = max;
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changed = true;
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emit q->maxChanged(QDateTime::fromMSecsSinceEpoch(max));
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}
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if (changed) {
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emit q->rangeChanged(QDateTime::fromMSecsSinceEpoch(min), QDateTime::fromMSecsSinceEpoch(max));
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emit rangeChanged(m_min,m_max);
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}
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}
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void QDateTimeAxisPrivate::setMin(const QVariant &min)
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{
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Q_Q(QDateTimeAxis);
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if (min.canConvert(QVariant::DateTime))
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q->setMin(min.toDateTime());
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}
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void QDateTimeAxisPrivate::setMax(const QVariant &max)
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{
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Q_Q(QDateTimeAxis);
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if (max.canConvert(QVariant::DateTime))
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q->setMax(max.toDateTime());
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}
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void QDateTimeAxisPrivate::setRange(const QVariant &min, const QVariant &max)
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{
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Q_Q(QDateTimeAxis);
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if (min.canConvert(QVariant::DateTime) && max.canConvert(QVariant::DateTime))
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q->setRange(min.toDateTime(), max.toDateTime());
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}
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void QDateTimeAxisPrivate::initializeGraphics(QGraphicsItem* parent)
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{
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Q_Q(QDateTimeAxis);
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ChartAxis* axis(0);
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if (orientation() == Qt::Vertical)
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axis = new ChartDateTimeAxisY(q,parent);
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if (orientation() == Qt::Horizontal)
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axis = new ChartDateTimeAxisX(q,parent);
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m_item.reset(axis);
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QAbstractAxisPrivate::initializeGraphics(parent);
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}
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void QDateTimeAxisPrivate::initializeDomain(AbstractDomain *domain)
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{
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if (m_max == m_min) {
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if (orientation() == Qt::Vertical)
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setRange(domain->minY(), domain->maxY());
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else
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setRange(domain->minX(), domain->maxX());
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} else {
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if (orientation() == Qt::Vertical)
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domain->setRangeY(m_min, m_max);
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else
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domain->setRangeX(m_min, m_max);
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}
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}
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#include "moc_qdatetimeaxis.cpp"
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#include "moc_qdatetimeaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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