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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 "qvalueaxis.h"
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#include "qvalueaxis_p.h"
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#include "chartvalueaxisx_p.h"
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#include "chartvalueaxisy_p.h"
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#include "abstractdomain_p.h"
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#include "chartdataset_p.h"
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#include "chartpresenter_p.h"
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#include "charttheme_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QValueAxis
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\brief The QValueAxis class is used for manipulating chart's axis.
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\mainclass
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ValueAxis can be setup to show axis line with tick marks, grid lines and shades.
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Values of axis are drawn to position of ticks.
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Example code on how to use QValueAxis.
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\code
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QChartView *chartView = new QChartView;
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QLineSeries *series = new QLineSeries;
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// ...
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chartView->chart()->addSeries(series);
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QValueAxis *axisX = new QValueAxis;
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axisX->setRange(10, 20.5);
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axisX->setTickCount(10);
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axisX->setLabelFormat("%.2f");
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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 ValueAxis QValueAxis
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\inherits AbstractAxis
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\brief The ValueAxis element is used for manipulating chart's axes
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ValueAxis can be setup to show axis line with tick marks, grid lines and shades.
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Values of axis are drawn to position of ticks
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To access Axes you can use ChartView API. For example:
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\code
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ChartView {
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ValueAxis {
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id: xAxis
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min: 0
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max: 10
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}
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// Add a few series...
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}
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\endcode
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*/
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/*!
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\property QValueAxis::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 ValueAxis::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 QValueAxis::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 ValueAxis::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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\property QValueAxis::tickCount
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Defines the number of ticks on the axis. This indicates how many grid lines are draw on the chart.
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The default value is 5, and it can not be below 2.
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*/
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/*!
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\qmlproperty real ValueAxis::tickCount
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Defines the number of ticks on the axis. This indicates how many grid lines are draw on the chart.
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The default value is 5, and it can not be below 2.
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*/
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/*!
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\property QValueAxis::labelFormat
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Defines the label format for the axis.
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Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c
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See QString::sprintf() for additional details.
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*/
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/*!
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\qmlproperty real ValueAxis::labelFormat
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Defines the label format for the axis.
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Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c
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See QString::sprintf() for additional details.
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*/
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/*!
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\fn void QValueAxis::minChanged(qreal 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 ValueAxis::onMinChanged(real 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 QValueAxis::maxChanged(qreal 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 ValueAxis::onMaxChanged(real 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 QValueAxis::tickCountChanged(int tickCount)
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Axis emits signal when number of ticks on axis have changed.
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*/
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/*!
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\qmlsignal ValueAxis::tickCountChanged(int tickCount)
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Axis emits signal when number of ticks on axis have changed.
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*/
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/*!
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\fn void QValueAxis::rangeChanged(qreal min, qreal 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 QValueAxis::niceNumbersEnabled
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\obsolete
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Using this function can lead to unexpected behavior. Use applyNiceNumbers() instead.
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*/
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/*!
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\qmlproperty bool ValueAxis::niceNumbersEnabled
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\obsolete
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Using this function can lead to unexpected behavior. Use applyNiceNumbers() instead.
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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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QValueAxis::QValueAxis(QObject *parent) :
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QAbstractAxis(*new QValueAxisPrivate(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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QValueAxis::QValueAxis(QValueAxisPrivate &d, QObject *parent)
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: 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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QValueAxis::~QValueAxis()
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{
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Q_D(QValueAxis);
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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 QValueAxis::setMin(qreal min)
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{
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Q_D(QValueAxis);
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setRange(min, qMax(d->m_max, min));
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}
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qreal QValueAxis::min() const
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{
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Q_D(const QValueAxis);
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return d->m_min;
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}
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void QValueAxis::setMax(qreal max)
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{
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Q_D(QValueAxis);
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setRange(qMin(d->m_min, max), max);
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}
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qreal QValueAxis::max() const
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{
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Q_D(const QValueAxis);
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return 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 QValueAxis::setRange(qreal min, qreal max)
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{
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Q_D(QValueAxis);
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d->setRange(min,max);
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}
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void QValueAxis::setTickCount(int count)
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{
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Q_D(QValueAxis);
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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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int QValueAxis::tickCount() const
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{
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Q_D(const QValueAxis);
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return d->m_tickCount;
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}
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void QValueAxis::setNiceNumbersEnabled(bool enable)
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{
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Q_D(QValueAxis);
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qWarning()<<"This function is depreciated, it can lead to unexpected behavior.Use applyNiceNumbers(). ";
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if(enable) {
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QObject::connect(this,SIGNAL(rangeChanged(qreal,qreal)),this,SLOT(applyNiceNumbers()));
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QObject::connect(this,SIGNAL(tickCountChanged(int)),this,SLOT(applyNiceNumbers()));
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applyNiceNumbers();
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}
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else {
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QObject::disconnect(this,SIGNAL(rangeChanged(qreal,qreal)),this,SLOT(applyNiceNumbers()));
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QObject::disconnect(this,SIGNAL(tickCountChanged(int)),this,SLOT(applyNiceNumbers()));
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}
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d->m_niceNumbersEnabled=enable;
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}
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bool QValueAxis::niceNumbersEnabled() const
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{
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Q_D(const QValueAxis);
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qWarning()<<"This function is depreciated.Use applyNiceNumbers().";
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return d->m_niceNumbersEnabled;
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}
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void QValueAxis::setLabelFormat(const QString &format)
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{
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Q_D(QValueAxis);
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d->m_format = format;
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emit labelFormatChanged(format);
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}
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QString QValueAxis::labelFormat() const
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{
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Q_D(const QValueAxis);
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return d->m_format;
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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 QValueAxis::type() const
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{
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return AxisTypeValue;
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}
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/*!
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This method modifies range and number of ticks on the axis to look "nice". Algorithm considers numbers that
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can be expressed as form of 1*10^n, 2* 10^n or 5*10^n as a nice numbers. These numbers are used for spacing the ticks.
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This method will modify the current range and number of ticks.
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\sa setRange(), setTicks()
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*/
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void QValueAxis::applyNiceNumbers()
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{
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Q_D(QValueAxis);
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if(d->m_applying) return;
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qreal min = d->m_min;
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qreal max = d->m_max;
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int ticks = d->m_tickCount;
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AbstractDomain::looseNiceNumbers(min,max,ticks);
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d->m_applying=true;
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d->setRange(min,max);
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setTickCount(ticks);
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d->m_applying=false;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QValueAxisPrivate::QValueAxisPrivate(QValueAxis *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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m_format(QString::null),
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m_applying(false),
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m_niceNumbersEnabled(false)
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{
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}
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QValueAxisPrivate::~QValueAxisPrivate()
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{
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}
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void QValueAxisPrivate::setMin(const QVariant &min)
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{
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Q_Q(QValueAxis);
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bool ok;
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qreal value = min.toReal(&ok);
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if (ok)
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q->setMin(value);
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}
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void QValueAxisPrivate::setMax(const QVariant &max)
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{
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Q_Q(QValueAxis);
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bool ok;
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qreal value = max.toReal(&ok);
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if (ok)
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q->setMax(value);
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}
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void QValueAxisPrivate::setRange(const QVariant &min, const QVariant &max)
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{
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Q_Q(QValueAxis);
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bool ok1;
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bool ok2;
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qreal value1 = min.toReal(&ok1);
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qreal value2 = max.toReal(&ok2);
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if (ok1 && ok2)
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q->setRange(value1, value2);
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}
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void QValueAxisPrivate::setRange(qreal min, qreal max)
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{
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Q_Q(QValueAxis);
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bool changed = false;
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if (min > max)
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return;
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if (!qFuzzyCompare(m_min,min)) {
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m_min = min;
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changed = true;
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emit q->minChanged(min);
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}
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if (!qFuzzyCompare(m_max,max)) {
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m_max = max;
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changed = true;
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emit q->maxChanged(max);
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}
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if (changed) {
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emit rangeChanged(min,max);
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emit q->rangeChanged(min, max);
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}
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}
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void QValueAxisPrivate::initializeGraphics(QGraphicsItem* parent)
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{
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Q_Q(QValueAxis);
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ChartAxis* axis(0);
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if (orientation() == Qt::Vertical)
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axis = new ChartValueAxisY(q,parent);
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if (orientation() == Qt::Horizontal)
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axis = new ChartValueAxisX(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 QValueAxisPrivate::initializeDomain(AbstractDomain *domain)
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{
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if (orientation() == Qt::Vertical) {
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if(!qFuzzyIsNull(m_max - m_min)) {
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domain->setRangeY(m_min, m_max);
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}
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else {
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setRange(domain->minY(), domain->maxY());
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}
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}
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if (orientation() == Qt::Horizontal) {
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if(!qFuzzyIsNull(m_max - m_min)) {
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domain->setRangeX(m_min, m_max);
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}
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else {
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setRange(domain->minX(), domain->maxX());
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}
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}
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}
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#include "moc_qvalueaxis.cpp"
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#include "moc_qvalueaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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