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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 "qxyseries.h"
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#include "qxyseries_p.h"
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#include "domain_p.h"
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#include "legendmarker_p.h"
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#include <QAbstractItemModel>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QXYSeries
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\brief The QXYSeries class is a base class for line, spline and scatter series.
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*/
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/*!
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\fn QPen QXYSeries::pen() const
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\brief Returns pen used to draw points for series.
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\sa setPen()
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*/
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/*!
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\fn QBrush QXYSeries::brush() const
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\brief Returns brush used to draw points for series.
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\sa setBrush()
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*/
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/*!
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\fn void QXYSeries::clicked(const QPointF& point)
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\brief Signal is emitted when user clicks the \a point on chart.
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*/
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/*!
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\fn void QXYSeries::selected()
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The signal is emitted if the user selects/deselects the XY series. The logic for maintaining selections should be
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implemented by the user of QXYSeries API.
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*/
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/*!
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\fn void QXYSeriesPrivate::pointReplaced(int index)
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\brief \internal \a index
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*/
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/*!
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\fn void QXYSeriesPrivate::pointAdded(int index)
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\brief \internal \a index
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*/
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/*!
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\fn void QXYSeriesPrivate::pointRemoved(int index)
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\brief \internal \a index
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*/
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/*!
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\fn void QXYSeriesPrivate::updated()
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\brief \internal
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*/
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/*!
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\internal
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Constructs empty series object which is a child of \a parent.
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When series object is added to QChartView or QChart instance ownerships is transferred.
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*/
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QXYSeries::QXYSeries(QXYSeriesPrivate &d,QObject *parent) : QAbstractSeries(d, parent)
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{
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}
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/*!
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Destroys the object. Series added to QChartView or QChart instances are owned by those,
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and are deleted when mentioned object are destroyed.
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*/
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QXYSeries::~QXYSeries()
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{
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}
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/*!
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Adds data point \a x \a y to the series. Points are connected with lines on the chart.
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*/
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void QXYSeries::append(qreal x,qreal y)
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{
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Q_D(QXYSeries);
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Q_ASSERT(d->m_x.size() == d->m_y.size());
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d->m_x<<x;
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d->m_y<<y;
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emit d->pointAdded(d->m_x.size()-1);
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}
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/*!
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This is an overloaded function.
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Adds data \a point to the series. Points are connected with lines on the chart.
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*/
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void QXYSeries::append(const QPointF &point)
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{
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append(point.x(),point.y());
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}
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/*!
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This is an overloaded function.
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Adds list of data \a points to the series. Points are connected with lines on the chart.
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*/
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void QXYSeries::append(const QList<QPointF> points)
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{
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foreach(const QPointF& point , points) {
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append(point.x(),point.y());
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}
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}
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/*!
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Modifies \a y value for given \a x a value.
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*/
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void QXYSeries::replace(qreal x,qreal y)
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{
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Q_D(QXYSeries);
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int index = d->m_x.indexOf(x);
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d->m_x[index] = x;
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d->m_y[index] = y;
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emit d->pointReplaced(index);
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}
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/*!
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This is an overloaded function.
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Replaces current y value of for given \a point x value with \a point y value.
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*/
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void QXYSeries::replace(const QPointF &point)
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{
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replace(point.x(),point.y());
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}
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/*!
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Removes first \a x value and related y value.
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*/
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void QXYSeries::remove(qreal x)
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{
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Q_D(QXYSeries);
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int index = d->m_x.indexOf(x);
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if (index == -1) return;
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d->m_x.remove(index);
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d->m_y.remove(index);
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emit d->pointRemoved(index);
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}
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/*!
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Removes current \a x and \a y value.
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*/
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void QXYSeries::remove(qreal x,qreal y)
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{
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Q_D(QXYSeries);
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int index =-1;
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do {
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index = d->m_x.indexOf(x,index+1);
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} while (index !=-1 && d->m_y.at(index)!=y);
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if (index==-1) return;
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d->m_x.remove(index);
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d->m_y.remove(index);
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emit d->pointRemoved(index);
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}
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/*!
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Removes current \a point x value. Note \a point y value is ignored.
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*/
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void QXYSeries::remove(const QPointF &point)
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{
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remove(point.x(),point.y());
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}
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/*!
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Removes all data points from the series.
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*/
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void QXYSeries::removeAll()
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{
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Q_D(QXYSeries);
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d->m_x.clear();
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d->m_y.clear();
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}
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/*!
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\internal \a pos
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*/
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qreal QXYSeries::x(int pos) const
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{
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Q_D(const QXYSeries);
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if (d->m_model) {
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if (d->m_mapOrientation == Qt::Vertical)
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// consecutive data is read from model's column
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return d->m_model->data(d->m_model->index(pos, d->m_mapX), Qt::DisplayRole).toDouble();
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else
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// consecutive data is read from model's row
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return d->m_model->data(d->m_model->index(d->m_mapX, pos), Qt::DisplayRole).toDouble();
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} else {
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// model is not specified, return the data from series' internal data store
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return d->m_x.at(pos);
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}
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}
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/*!
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\internal \a pos
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*/
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qreal QXYSeries::y(int pos) const
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{
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Q_D(const QXYSeries);
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if (d->m_model) {
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if (d->m_mapOrientation == Qt::Vertical)
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// consecutive data is read from model's column
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return d->m_model->data(d->m_model->index(pos, d->m_mapY), Qt::DisplayRole).toDouble();
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else
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// consecutive data is read from model's row
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return d->m_model->data(d->m_model->index(d->m_mapY, pos), Qt::DisplayRole).toDouble();
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} else {
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// model is not specified, return the data from series' internal data store
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return d->m_y.at(pos);
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}
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}
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/*!
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Returns number of data points within series.
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*/
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int QXYSeries::count() const
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{
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Q_D(const QXYSeries);
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Q_ASSERT(d->m_x.size() == d->m_y.size());
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if (d->m_model) {
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if (d->m_mapOrientation == Qt::Vertical) {
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// data is in a column. Return the number of mapped items
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return d->m_model->rowCount();
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} else {
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// data is in a row. Return the number of mapped items
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return d->m_model->columnCount();
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}
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}
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// model is not specified, return the number of points in the series internal data store
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return d->m_x.size();
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}
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/*!
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Returns the data points of the series.
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*/
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QList<QPointF> QXYSeries::data()
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{
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Q_D(QXYSeries);
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QList<QPointF> data;
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for (int i(0); i < d->m_x.count() && i < d->m_y.count(); i++)
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data.append(QPointF(d->m_x.at(i), d->m_y.at(i)));
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return data;
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}
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/*!
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Sets \a pen used for drawing points on the chart. If the pen is not defined, the
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pen from chart theme is used.
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\sa QChart::setTheme()
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*/
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void QXYSeries::setPen(const QPen &pen)
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{
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Q_D(QXYSeries);
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if (d->m_pen!=pen) {
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d->m_pen = pen;
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emit d->updated();
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}
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}
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QPen QXYSeries::pen() const
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{
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Q_D(const QXYSeries);
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return d->m_pen;
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}
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/*!
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Sets \a brush used for drawing points on the chart. If the brush is not defined, brush
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from chart theme setting is used.
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\sa QChart::setTheme()
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*/
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void QXYSeries::setBrush(const QBrush &brush)
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{
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Q_D(QXYSeries);
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if (d->m_brush!=brush) {
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d->m_brush = brush;
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emit d->updated();
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}
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}
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QBrush QXYSeries::brush() const
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{
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Q_D(const QXYSeries);
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return d->m_brush;
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}
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/*!
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Sets if data points are \a visible and should be drawn on line.
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*/
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void QXYSeries::setPointsVisible(bool visible)
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{
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Q_D(QXYSeries);
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if (d->m_pointsVisible != visible){
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d->m_pointsVisible = visible;
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emit d->updated();
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}
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}
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/*!
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Returns true if drawing the data points of the series is enabled.
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*/
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bool QXYSeries::pointsVisible() const
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{
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Q_D(const QXYSeries);
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return d->m_pointsVisible;
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}
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/*!
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Stream operator for adding a data \a point to the series.
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\sa append()
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*/
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QXYSeries& QXYSeries::operator<< (const QPointF &point)
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{
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append(point);
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return *this;
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}
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/*!
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Stream operator for adding a list of \a points to the series.
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\sa append()
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*/
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QXYSeries& QXYSeries::operator<< (const QList<QPointF> points)
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{
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append(points);
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return *this;
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}
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/*!
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\internal
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*/
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void QXYSeries::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
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{
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Q_UNUSED(bottomRight)
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Q_D(QXYSeries);
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if (d->m_mapOrientation == Qt::Vertical) {
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if (topLeft.column() == d->m_mapX || topLeft.column() == d->m_mapY)
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emit d->pointReplaced(topLeft.row());
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} else {
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if (topLeft.row() == d->m_mapX || topLeft.row() == d->m_mapY)
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emit d->pointReplaced(topLeft.column());
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}
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}
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/*!
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\fn bool QXYSeries::setModel(QAbstractItemModel *model)
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Sets the \a model to be used as a data source
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\sa setModelMapping()
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*/
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bool QXYSeries::setModel(QAbstractItemModel *model)
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{
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Q_D(QXYSeries);
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// disconnect signals from old model
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if (d->m_model) {
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QObject::disconnect(d->m_model, 0, this, 0);
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d->m_mapX = -1;
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d->m_mapY = -1;
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d->m_mapOrientation = Qt::Vertical;
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}
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// set new model
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if (model) {
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d->m_model = model;
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return true;
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} else {
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d->m_model = 0;
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return false;
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}
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}
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/*!
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Sets the \a modelX to be used as a data source for x coordinate and \a modelY to be used
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as a data source for y coordinate. The \a orientation parameter specifies whether the data
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is in columns or in rows.
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\sa setModel()
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*/
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void QXYSeries::setModelMapping(int modelX, int modelY, Qt::Orientation orientation)
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{
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Q_D(QXYSeries);
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if (d->m_model == 0)
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return;
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d->m_mapX = modelX;
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d->m_mapY = modelY;
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d->m_mapOrientation = orientation;
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connect(d->m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex,QModelIndex)));
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QXYSeriesPrivate::QXYSeriesPrivate(QXYSeries *q) : QAbstractSeriesPrivate(q),
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m_mapX(-1),
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m_mapY(-1),
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m_mapOrientation( Qt::Vertical),
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m_pointsVisible(false)
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{
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}
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void QXYSeriesPrivate::scaleDomain(Domain& domain)
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{
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qreal minX(domain.minX());
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qreal minY(domain.minY());
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qreal maxX(domain.maxX());
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qreal maxY(domain.maxY());
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int tickXCount(domain.tickXCount());
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int tickYCount(domain.tickYCount());
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Q_Q(QXYSeries);
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for (int i = 0; i < q->count(); i++)
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{
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qreal x = q->x(i);
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qreal y = q->y(i);
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minX = qMin(minX, x);
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minY = qMin(minY, y);
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maxX = qMax(maxX, x);
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maxY = qMax(maxY, y);
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}
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domain.setRangeX(minX,maxX,tickXCount);
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domain.setRangeY(minY,maxY,tickYCount);
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}
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QList<LegendMarker*> QXYSeriesPrivate::createLegendMarker(QLegend* legend)
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{
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Q_Q(QXYSeries);
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QList<LegendMarker*> list;
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return list << new XYLegendMarker(q,legend);
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}
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#include "moc_qxyseries.cpp"
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#include "moc_qxyseries_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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