|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2015 The Qt Company Ltd
|
|
|
** All rights reserved.
|
|
|
** For any questions to The Qt Company, please use contact form at http://qt.io
|
|
|
**
|
|
|
** This file is part of the Qt Charts module.
|
|
|
**
|
|
|
** 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
|
|
|
** agreement between you and The Qt Company.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.io
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include <QtCharts/QCategoryAxis>
|
|
|
#include <private/qcategoryaxis_p.h>
|
|
|
#include <private/chartcategoryaxisx_p.h>
|
|
|
#include <private/chartcategoryaxisy_p.h>
|
|
|
#include <private/polarchartcategoryaxisangular_p.h>
|
|
|
#include <private/polarchartcategoryaxisradial_p.h>
|
|
|
#include <QtCharts/QChart>
|
|
|
#include <QtCore/QtMath>
|
|
|
#include <QtCore/QDebug>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
/*!
|
|
|
\class QCategoryAxis
|
|
|
\inmodule Qt Charts
|
|
|
\brief The QCategoryAxis class allows putting a named ranges on the axis.
|
|
|
\mainclass
|
|
|
|
|
|
This class can be used when the underlying data needs to be given extra meaning.
|
|
|
Unlike with the QBarCategoryAxis the QCategoryAxis allows the categories ranges widths to be specified freely.
|
|
|
|
|
|
Example code on how to use QCategoryAxis:
|
|
|
\image api_category_axis.png
|
|
|
\code
|
|
|
QChartView *chartView = new QChartView;
|
|
|
QLineSeries *series = new QLineSeries;
|
|
|
// ...
|
|
|
chartView->chart()->addSeries(series);
|
|
|
|
|
|
QCategoryAxis *axisY = new QCategoryAxis;
|
|
|
axisY->setMin(0);
|
|
|
axisY->setMax(52);
|
|
|
axisY->setStartValue(15);
|
|
|
axisY->append("First", 20);
|
|
|
axisY->append("Second", 37);
|
|
|
axisY->append("Third", 52);
|
|
|
chartView->chart()->setAxisY(axisY, series);
|
|
|
\endcode
|
|
|
*/
|
|
|
/*!
|
|
|
\qmltype CategoryAxis
|
|
|
\instantiates QCategoryAxis
|
|
|
\inqmlmodule QtCharts
|
|
|
|
|
|
\inherits AbstractAxis
|
|
|
\brief CategoryAxis allows putting a named ranges on the axis.
|
|
|
|
|
|
For example:
|
|
|
\image examples_qmlaxes3.png
|
|
|
\snippet qmlaxes/qml/qmlaxes/View3.qml 1
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QCategoryAxis::startValue
|
|
|
Defines the low end of the first category on the axis.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty int CategoryAxis::startValue
|
|
|
Defines the low end of the first category on the axis.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QCategoryAxis::count
|
|
|
The count of categories.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty int CategoryAxis::count
|
|
|
The count of categories.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QCategoryAxis::categoriesLabels
|
|
|
The category labels as a string list.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty StringList CategoryAxis::categoriesLabels
|
|
|
The category labels as a list of strings.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QCategoryAxis::categoriesChanged()
|
|
|
Axis emits signal when the categories of the axis have changed.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\enum QCategoryAxis::AxisLabelsPosition
|
|
|
|
|
|
This enum describes the position of the category labels.
|
|
|
|
|
|
\value AxisLabelsPositionCenter Labels are centered to category.
|
|
|
\value AxisLabelsPositionOnValue Labels are positioned to the high end limit of the category.
|
|
|
*/
|
|
|
/*!
|
|
|
\property QCategoryAxis::labelsPosition
|
|
|
Defines the position of the category labels. The labels in the beginning and in the end of the
|
|
|
axes may overlap other axes labels when positioned on value.
|
|
|
*/
|
|
|
/*!
|
|
|
\qmlproperty AxisLabelsPosition CategoryAxis::labelsPosition
|
|
|
Defines the position of the category labels. The labels in the beginning and in the end of the
|
|
|
axes may overlap other axes labels when positioned on value.
|
|
|
*/
|
|
|
|
|
|
|
|
|
/*!
|
|
|
Constructs an axis object which is a child of \a parent.
|
|
|
*/
|
|
|
QCategoryAxis::QCategoryAxis(QObject *parent):
|
|
|
QValueAxis(*new QCategoryAxisPrivate(this), parent)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Destroys the object
|
|
|
*/
|
|
|
QCategoryAxis::~QCategoryAxis()
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
if (d->m_chart)
|
|
|
d->m_chart->removeAxis(this);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\internal
|
|
|
*/
|
|
|
QCategoryAxis::QCategoryAxis(QCategoryAxisPrivate &d, QObject *parent): QValueAxis(d, parent)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\qmlmethod CategoryAxis::append(string label, real endValue)
|
|
|
Appends new category to the axis with an \a label. Category label has to be unique.
|
|
|
Parameter \a endValue specifies the high end limit of the category.
|
|
|
It has to be greater than the high end limit of the previous category.
|
|
|
Otherwise the method returns without adding a new category.
|
|
|
*/
|
|
|
/*!
|
|
|
Appends new category to the axis with an \a categoryLabel.
|
|
|
Category label has to be unique.
|
|
|
Parameter \a categoryEndValue specifies the high end limit of the category.
|
|
|
It has to be greater than the high end limit of the previous category.
|
|
|
Otherwise the method returns without adding a new category.
|
|
|
*/
|
|
|
void QCategoryAxis::append(const QString &categoryLabel, qreal categoryEndValue)
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
|
|
|
if (!d->m_categories.contains(categoryLabel)) {
|
|
|
if (d->m_categories.isEmpty()) {
|
|
|
Range range(d->m_categoryMinimum, categoryEndValue);
|
|
|
d->m_categoriesMap.insert(categoryLabel, range);
|
|
|
d->m_categories.append(categoryLabel);
|
|
|
emit categoriesChanged();
|
|
|
} else if (categoryEndValue > endValue(d->m_categories.last())) {
|
|
|
Range previousRange = d->m_categoriesMap.value(d->m_categories.last());
|
|
|
d->m_categoriesMap.insert(categoryLabel, Range(previousRange.second, categoryEndValue));
|
|
|
d->m_categories.append(categoryLabel);
|
|
|
emit categoriesChanged();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets \a min to be the low end limit of the first category on the axis.
|
|
|
If there is already some categories added to the axis then passed value must be lower than the high end value of the already defined first category range.
|
|
|
Otherwise nothing is done.
|
|
|
*/
|
|
|
void QCategoryAxis::setStartValue(qreal min)
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
if (d->m_categories.isEmpty()) {
|
|
|
d->m_categoryMinimum = min;
|
|
|
emit categoriesChanged();
|
|
|
} else {
|
|
|
Range range = d->m_categoriesMap.value(d->m_categories.first());
|
|
|
if (min < range.second) {
|
|
|
d->m_categoriesMap.insert(d->m_categories.first(), Range(min, range.second));
|
|
|
emit categoriesChanged();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the low end limit of the category specified by an \a categoryLabel
|
|
|
*/
|
|
|
qreal QCategoryAxis::startValue(const QString &categoryLabel) const
|
|
|
{
|
|
|
Q_D(const QCategoryAxis);
|
|
|
if (categoryLabel.isEmpty())
|
|
|
return d->m_categoryMinimum;
|
|
|
return d->m_categoriesMap.value(categoryLabel).first;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the high end limit of the interval specified by an \a categoryLabel
|
|
|
*/
|
|
|
qreal QCategoryAxis::endValue(const QString &categoryLabel) const
|
|
|
{
|
|
|
Q_D(const QCategoryAxis);
|
|
|
return d->m_categoriesMap.value(categoryLabel).second;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\qmlmethod CategoryAxis::remove(string label)
|
|
|
Removes a category specified by the \a label from the axis
|
|
|
*/
|
|
|
/*!
|
|
|
Removes an interval specified by the \a categoryLabel from the axis
|
|
|
*/
|
|
|
void QCategoryAxis::remove(const QString &categoryLabel)
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
int labelIndex = d->m_categories.indexOf(categoryLabel);
|
|
|
|
|
|
// check if such label exists
|
|
|
if (labelIndex != -1) {
|
|
|
d->m_categories.removeAt(labelIndex);
|
|
|
d->m_categoriesMap.remove(categoryLabel);
|
|
|
|
|
|
// the range of the interval that follows (if exists) needs to be updated
|
|
|
if (labelIndex < d->m_categories.count()) {
|
|
|
QString label = d->m_categories.at(labelIndex);
|
|
|
Range range = d->m_categoriesMap.value(label);
|
|
|
|
|
|
// set the range
|
|
|
if (labelIndex == 0) {
|
|
|
range.first = d->m_categoryMinimum;
|
|
|
d->m_categoriesMap.insert(label, range);
|
|
|
} else {
|
|
|
range.first = d->m_categoriesMap.value(d->m_categories.at(labelIndex - 1)).second;
|
|
|
d->m_categoriesMap.insert(label, range);
|
|
|
}
|
|
|
}
|
|
|
emit categoriesChanged();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\qmlmethod CategoryAxis::replace(string oldLabel, string newLabel)
|
|
|
Replaces \a oldLabel of an existing category with a \a newLabel.
|
|
|
If the old label does not exist the method returns without making any changes.
|
|
|
*/
|
|
|
/*!
|
|
|
Replaces \a oldLabel of an existing category with a \a newLabel
|
|
|
If the old label does not exist the method returns without making any changes.
|
|
|
*/
|
|
|
void QCategoryAxis::replaceLabel(const QString &oldLabel, const QString &newLabel)
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
int labelIndex = d->m_categories.indexOf(oldLabel);
|
|
|
|
|
|
// check if such label exists
|
|
|
if (labelIndex != -1) {
|
|
|
d->m_categories.replace(labelIndex, newLabel);
|
|
|
Range range = d->m_categoriesMap.value(oldLabel);
|
|
|
d->m_categoriesMap.remove(oldLabel);
|
|
|
d->m_categoriesMap.insert(newLabel, range);
|
|
|
emit categoriesChanged();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the list of the intervals labels
|
|
|
*/
|
|
|
QStringList QCategoryAxis::categoriesLabels()
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
return d->m_categories;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns number of intervals.
|
|
|
*/
|
|
|
int QCategoryAxis::count() const
|
|
|
{
|
|
|
Q_D(const QCategoryAxis);
|
|
|
return d->m_categories.count();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the type of the axis
|
|
|
*/
|
|
|
QAbstractAxis::AxisType QCategoryAxis::type() const
|
|
|
{
|
|
|
return QAbstractAxis::AxisTypeCategory;
|
|
|
}
|
|
|
|
|
|
void QCategoryAxis::setLabelsPosition(QCategoryAxis::AxisLabelsPosition position)
|
|
|
{
|
|
|
Q_D(QCategoryAxis);
|
|
|
if (d->m_labelsPosition != position) {
|
|
|
d->m_labelsPosition = position;
|
|
|
emit labelsPositionChanged(position);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QCategoryAxis::AxisLabelsPosition QCategoryAxis::labelsPosition() const
|
|
|
{
|
|
|
Q_D(const QCategoryAxis);
|
|
|
return d->m_labelsPosition;
|
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
QCategoryAxisPrivate::QCategoryAxisPrivate(QCategoryAxis *q)
|
|
|
: QValueAxisPrivate(q),
|
|
|
m_categoryMinimum(0),
|
|
|
m_labelsPosition(QCategoryAxis::AxisLabelsPositionCenter)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
QCategoryAxisPrivate::~QCategoryAxisPrivate()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
int QCategoryAxisPrivate::ticksCount() const
|
|
|
{
|
|
|
return m_categories.count() + 1;
|
|
|
}
|
|
|
|
|
|
void QCategoryAxisPrivate::initializeGraphics(QGraphicsItem *parent)
|
|
|
{
|
|
|
Q_Q(QCategoryAxis);
|
|
|
ChartAxisElement *axis(0);
|
|
|
if (m_chart->chartType() == QChart::ChartTypeCartesian) {
|
|
|
if (orientation() == Qt::Vertical)
|
|
|
axis = new ChartCategoryAxisY(q,parent);
|
|
|
else if (orientation() == Qt::Horizontal)
|
|
|
axis = new ChartCategoryAxisX(q,parent);
|
|
|
}
|
|
|
|
|
|
if (m_chart->chartType() == QChart::ChartTypePolar) {
|
|
|
if (orientation() == Qt::Vertical)
|
|
|
axis = new PolarChartCategoryAxisRadial(q, parent);
|
|
|
if (orientation() == Qt::Horizontal)
|
|
|
axis = new PolarChartCategoryAxisAngular(q, parent);
|
|
|
}
|
|
|
|
|
|
m_item.reset(axis);
|
|
|
QAbstractAxisPrivate::initializeGraphics(parent);
|
|
|
}
|
|
|
|
|
|
#include "moc_qcategoryaxis.cpp"
|
|
|
#include "moc_qcategoryaxis_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
