|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2013 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 "qvalueaxis.h"
|
|
|
#include "qvalueaxis_p.h"
|
|
|
#include "chartvalueaxisx_p.h"
|
|
|
#include "chartvalueaxisy_p.h"
|
|
|
#include "abstractdomain_p.h"
|
|
|
#include "polarchartvalueaxisangular_p.h"
|
|
|
#include "polarchartvalueaxisradial_p.h"
|
|
|
#include "chartdataset_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "charttheme_p.h"
|
|
|
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
/*!
|
|
|
\class QValueAxis
|
|
|
\brief The QValueAxis class is used for manipulating chart's axis.
|
|
|
\mainclass
|
|
|
|
|
|
ValueAxis can be setup to show axis line with tick marks, grid lines and shades.
|
|
|
Values of axis are drawn to position of ticks.
|
|
|
|
|
|
Example code on how to use QValueAxis.
|
|
|
\code
|
|
|
QChartView *chartView = new QChartView;
|
|
|
QLineSeries *series = new QLineSeries;
|
|
|
// ...
|
|
|
chartView->chart()->addSeries(series);
|
|
|
|
|
|
QValueAxis *axisX = new QValueAxis;
|
|
|
axisX->setRange(10, 20.5);
|
|
|
axisX->setTickCount(10);
|
|
|
axisX->setLabelFormat("%.2f");
|
|
|
chartView->chart()->setAxisX(axisX, series);
|
|
|
\endcode
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\qmlclass ValueAxis QValueAxis
|
|
|
\inherits AbstractAxis
|
|
|
\brief The ValueAxis element is used for manipulating chart's axes
|
|
|
|
|
|
ValueAxis can be setup to show axis line with tick marks, grid lines and shades.
|
|
|
Values of axis are drawn to position of ticks
|
|
|
|
|
|
To access Axes you can use ChartView API. For example:
|
|
|
\code
|
|
|
ChartView {
|
|
|
ValueAxis {
|
|
|
id: xAxis
|
|
|
min: 0
|
|
|
max: 10
|
|
|
}
|
|
|
// Add a few series...
|
|
|
}
|
|
|
\endcode
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QValueAxis::min
|
|
|
Defines the minimum value on the axis.
|
|
|
When setting this property the max is adjusted if necessary, to ensure that the range remains valid.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty real ValueAxis::min
|
|
|
Defines the minimum value on the axis.
|
|
|
When setting this property the max is adjusted if necessary, to ensure that the range remains valid.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QValueAxis::max
|
|
|
Defines the maximum value on the axis.
|
|
|
When setting this property the min is adjusted if necessary, to ensure that the range remains valid.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty real ValueAxis::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.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QValueAxis::tickCount
|
|
|
Defines the number of ticks on the axis. This indicates how many grid lines are draw on the chart.
|
|
|
The default value is 5, and it can not be below 2.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty real ValueAxis::tickCount
|
|
|
Defines the number of ticks on the axis. This indicates how many grid lines are draw on the chart.
|
|
|
The default value is 5, and it can not be below 2.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QValueAxis::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.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty real ValueAxis::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.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QValueAxis::minChanged(qreal min)
|
|
|
Axis emits signal when \a min of axis has changed.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlsignal ValueAxis::onMinChanged(real min)
|
|
|
Axis emits signal when \a min of axis has changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QValueAxis::maxChanged(qreal max)
|
|
|
Axis emits signal when \a max of axis has changed.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlsignal ValueAxis::onMaxChanged(real max)
|
|
|
Axis emits signal when \a max of axis has changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QValueAxis::tickCountChanged(int tickCount)
|
|
|
Axis emits signal when \a tickCount number on axis have changed.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlsignal ValueAxis::tickCountChanged(int tickCount)
|
|
|
Axis emits signal when \a tickCount number on axis have changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QValueAxis::rangeChanged(qreal min, qreal max)
|
|
|
Axis emits signal when \a min or \a max of axis has changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QValueAxis::labelFormatChanged(const QString &format)
|
|
|
Axis emits signal when \a format of axis labels has changed.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlsignal ValueAxis::labelFormatChanged(const QString &format)
|
|
|
Axis emits signal when \a format of axis labels has changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QValueAxis::niceNumbersEnabled
|
|
|
\obsolete
|
|
|
Using this function can lead to unexpected behavior. Use applyNiceNumbers() instead.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\qmlproperty bool ValueAxis::niceNumbersEnabled
|
|
|
\obsolete
|
|
|
Using this function can lead to unexpected behavior. Use applyNiceNumbers() instead.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
Constructs an axis object which is a child of \a parent.
|
|
|
*/
|
|
|
QValueAxis::QValueAxis(QObject *parent) :
|
|
|
QAbstractAxis(*new QValueAxisPrivate(this), parent)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\internal
|
|
|
*/
|
|
|
QValueAxis::QValueAxis(QValueAxisPrivate &d, QObject *parent)
|
|
|
: QAbstractAxis(d, parent)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Destroys the object
|
|
|
*/
|
|
|
QValueAxis::~QValueAxis()
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
if (d->m_chart)
|
|
|
d->m_chart->removeAxis(this);
|
|
|
}
|
|
|
|
|
|
void QValueAxis::setMin(qreal min)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
setRange(min, qMax(d->m_max, min));
|
|
|
}
|
|
|
|
|
|
qreal QValueAxis::min() const
|
|
|
{
|
|
|
Q_D(const QValueAxis);
|
|
|
return d->m_min;
|
|
|
}
|
|
|
|
|
|
void QValueAxis::setMax(qreal max)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
setRange(qMin(d->m_min, max), max);
|
|
|
}
|
|
|
|
|
|
qreal QValueAxis::max() const
|
|
|
{
|
|
|
Q_D(const QValueAxis);
|
|
|
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 QValueAxis::setRange(qreal min, qreal max)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
d->setRange(min,max);
|
|
|
}
|
|
|
|
|
|
void QValueAxis::setTickCount(int count)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
if (d->m_tickCount != count && count >= 2) {
|
|
|
d->m_tickCount = count;
|
|
|
emit tickCountChanged(count);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
int QValueAxis::tickCount() const
|
|
|
{
|
|
|
Q_D(const QValueAxis);
|
|
|
return d->m_tickCount;
|
|
|
}
|
|
|
|
|
|
void QValueAxis::setNiceNumbersEnabled(bool enable)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
qWarning()<<"This function is depreciated, it can lead to unexpected behavior.Use applyNiceNumbers(). ";
|
|
|
if(enable) {
|
|
|
QObject::connect(this,SIGNAL(rangeChanged(qreal,qreal)),this,SLOT(applyNiceNumbers()));
|
|
|
QObject::connect(this,SIGNAL(tickCountChanged(int)),this,SLOT(applyNiceNumbers()));
|
|
|
applyNiceNumbers();
|
|
|
}
|
|
|
else {
|
|
|
QObject::disconnect(this,SIGNAL(rangeChanged(qreal,qreal)),this,SLOT(applyNiceNumbers()));
|
|
|
QObject::disconnect(this,SIGNAL(tickCountChanged(int)),this,SLOT(applyNiceNumbers()));
|
|
|
}
|
|
|
d->m_niceNumbersEnabled=enable;
|
|
|
}
|
|
|
|
|
|
bool QValueAxis::niceNumbersEnabled() const
|
|
|
{
|
|
|
Q_D(const QValueAxis);
|
|
|
qWarning()<<"This function is depreciated.Use applyNiceNumbers().";
|
|
|
return d->m_niceNumbersEnabled;
|
|
|
}
|
|
|
|
|
|
void QValueAxis::setLabelFormat(const QString &format)
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
d->m_format = format;
|
|
|
emit labelFormatChanged(format);
|
|
|
}
|
|
|
|
|
|
QString QValueAxis::labelFormat() const
|
|
|
{
|
|
|
Q_D(const QValueAxis);
|
|
|
return d->m_format;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the type of the axis
|
|
|
*/
|
|
|
QAbstractAxis::AxisType QValueAxis::type() const
|
|
|
{
|
|
|
return AxisTypeValue;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
This method modifies range and number of ticks on the axis to look "nice". Algorithm considers numbers that
|
|
|
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.
|
|
|
This method will modify the current range and number of ticks.
|
|
|
\sa setRange(), setTickCount()
|
|
|
*/
|
|
|
void QValueAxis::applyNiceNumbers()
|
|
|
{
|
|
|
Q_D(QValueAxis);
|
|
|
if(d->m_applying) return;
|
|
|
qreal min = d->m_min;
|
|
|
qreal max = d->m_max;
|
|
|
int ticks = d->m_tickCount;
|
|
|
AbstractDomain::looseNiceNumbers(min,max,ticks);
|
|
|
d->m_applying=true;
|
|
|
d->setRange(min,max);
|
|
|
setTickCount(ticks);
|
|
|
d->m_applying=false;
|
|
|
}
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
QValueAxisPrivate::QValueAxisPrivate(QValueAxis *q)
|
|
|
: QAbstractAxisPrivate(q),
|
|
|
m_min(0),
|
|
|
m_max(0),
|
|
|
m_tickCount(5),
|
|
|
m_format(QString::null),
|
|
|
m_applying(false),
|
|
|
m_niceNumbersEnabled(false)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
QValueAxisPrivate::~QValueAxisPrivate()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
void QValueAxisPrivate::setMin(const QVariant &min)
|
|
|
{
|
|
|
Q_Q(QValueAxis);
|
|
|
bool ok;
|
|
|
qreal value = min.toReal(&ok);
|
|
|
if (ok)
|
|
|
q->setMin(value);
|
|
|
}
|
|
|
|
|
|
void QValueAxisPrivate::setMax(const QVariant &max)
|
|
|
{
|
|
|
Q_Q(QValueAxis);
|
|
|
bool ok;
|
|
|
qreal value = max.toReal(&ok);
|
|
|
if (ok)
|
|
|
q->setMax(value);
|
|
|
}
|
|
|
|
|
|
void QValueAxisPrivate::setRange(const QVariant &min, const QVariant &max)
|
|
|
{
|
|
|
Q_Q(QValueAxis);
|
|
|
bool ok1;
|
|
|
bool ok2;
|
|
|
qreal value1 = min.toReal(&ok1);
|
|
|
qreal value2 = max.toReal(&ok2);
|
|
|
if (ok1 && ok2)
|
|
|
q->setRange(value1, value2);
|
|
|
}
|
|
|
|
|
|
void QValueAxisPrivate::setRange(qreal min, qreal max)
|
|
|
{
|
|
|
Q_Q(QValueAxis);
|
|
|
bool changed = false;
|
|
|
|
|
|
if (min > max)
|
|
|
return;
|
|
|
|
|
|
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);
|
|
|
emit q->rangeChanged(min, max);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void QValueAxisPrivate::initializeGraphics(QGraphicsItem *parent)
|
|
|
{
|
|
|
Q_Q(QValueAxis);
|
|
|
ChartAxisElement *axis(0);
|
|
|
|
|
|
if (m_chart->chartType() == QChart::ChartTypeCartesian) {
|
|
|
if (orientation() == Qt::Vertical)
|
|
|
axis = new ChartValueAxisY(q,parent);
|
|
|
if (orientation() == Qt::Horizontal)
|
|
|
axis = new ChartValueAxisX(q,parent);
|
|
|
}
|
|
|
|
|
|
if (m_chart->chartType() == QChart::ChartTypePolar) {
|
|
|
if (orientation() == Qt::Vertical)
|
|
|
axis = new PolarChartValueAxisRadial(q, parent);
|
|
|
if (orientation() == Qt::Horizontal)
|
|
|
axis = new PolarChartValueAxisAngular(q, parent);
|
|
|
}
|
|
|
|
|
|
m_item.reset(axis);
|
|
|
QAbstractAxisPrivate::initializeGraphics(parent);
|
|
|
}
|
|
|
|
|
|
|
|
|
void QValueAxisPrivate::initializeDomain(AbstractDomain *domain)
|
|
|
{
|
|
|
if (orientation() == Qt::Vertical) {
|
|
|
if (!qFuzzyIsNull(m_max - m_min))
|
|
|
domain->setRangeY(m_min, m_max);
|
|
|
else
|
|
|
setRange(domain->minY(), domain->maxY());
|
|
|
}
|
|
|
if (orientation() == Qt::Horizontal) {
|
|
|
if (!qFuzzyIsNull(m_max - m_min))
|
|
|
domain->setRangeX(m_min, m_max);
|
|
|
else
|
|
|
setRange(domain->minX(), domain->maxX());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#include "moc_qvalueaxis.cpp"
|
|
|
#include "moc_qvalueaxis_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
