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/****************************************************************************
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**
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** Copyright (C) 2013 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 "qchart.h"
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#include "qchart_p.h"
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#include "legendscroller_p.h"
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#include "qlegend_p.h"
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#include "chartbackground_p.h"
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#include "qabstractaxis.h"
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#include "abstractchartlayout_p.h"
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#include "charttheme_p.h"
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#include "chartpresenter_p.h"
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#include "chartdataset_p.h"
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#include <QGraphicsScene>
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#include <QGraphicsSceneResizeEvent>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\enum QChart::ChartTheme
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This enum describes the theme used by the chart.
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\value ChartThemeLight The default theme
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\value ChartThemeBlueCerulean
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\value ChartThemeDark
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\value ChartThemeBrownSand
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\value ChartThemeBlueNcs
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\value ChartThemeHighContrast
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\value ChartThemeBlueIcy
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*/
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/*!
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\enum QChart::AnimationOption
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For enabling/disabling animations. Defaults to NoAnimation.
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\value NoAnimation
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\value GridAxisAnimations
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\value SeriesAnimations
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\value AllAnimations
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*/
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/*!
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\enum QChart::ChartType
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This enum describes the chart type.
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\value ChartTypeUndefined
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\value ChartTypeCartesian
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\value ChartTypePolar
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*/
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/*!
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\class QChart
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\brief QtCommercial chart API.
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QChart is a QGraphicsWidget that you can show in a QGraphicsScene. It manages the graphical
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representation of different types of series and other chart related objects like
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QAxis and QLegend. If you simply want to show a chart in a layout, you can use the
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convenience class QChartView instead of QChart.
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\sa QChartView
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*/
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/*!
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\property QChart::animationOptions
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The animation \a options for the chart. Animations are enabled/disabled based on this setting.
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*/
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/*!
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\property QChart::backgroundVisible
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Whether the chart background is visible or not.
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\sa setBackgroundBrush(), setBackgroundPen()
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*/
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/*!
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\property QChart::dropShadowEnabled
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If set to true, the background drop shadow effect is enabled. If set to false, it is disabled. Note that the drop
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shadow effect depends on theme, which means the setting may be changed if you switch to another theme.
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*/
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/*!
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\property QChart::minimumMargins
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Minimum margins between the plot area (axes) and the edge of the chart widget.
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*/
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/*!
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\property QChart::margins
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Minimum between the plot area (axes) and the edge of the chart widget.
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*/
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/*!
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\property QChart::theme
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Theme is a built-in collection of UI style related settings applied for all visual elements of a chart, like colors,
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pens, brushes and fonts of series, axes, title and legend. \l {Chart themes demo} shows an example with a few
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different themes.
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Note: changing the theme will overwrite all customizations previously applied to the series.
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*/
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/*!
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\property QChart::title
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Title is the name (label) of a chart. It is shown as a headline on top of the chart.
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*/
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/*!
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\property QChart::chartType
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Chart type indicates if the chart is a cartesian chart or a polar chart.
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This property is set internally and is read only.
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\sa QPolarChart
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*/
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/*!
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\internal
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Constructs a chart object of \a type which is a child of a \a parent.
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Parameter \a wFlags is passed to the QGraphicsWidget constructor.
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This constructor is called only by subclasses.
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*/
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QChart::QChart(QChart::ChartType type, QGraphicsItem *parent, Qt::WindowFlags wFlags)
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: QGraphicsWidget(parent, wFlags),
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d_ptr(new QChartPrivate(this, type))
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{
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d_ptr->init();
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}
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/*!
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Constructs a chart object which is a child of a \a parent.
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Parameter \a wFlags is passed to the QGraphicsWidget constructor.
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*/
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QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
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: QGraphicsWidget(parent, wFlags),
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d_ptr(new QChartPrivate(this, ChartTypeCartesian))
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{
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d_ptr->init();
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}
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/*!
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Destroys the object and it's children, like series and axis objects added to it.
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*/
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QChart::~QChart()
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{
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//start by deleting dataset, it will remove all series and axes
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delete d_ptr->m_dataset;
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d_ptr->m_dataset = 0;
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}
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/*!
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Adds the \a series onto the chart and takes the ownership of the object.
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If auto scaling is enabled, re-scales the axes the series is bound to (both the x axis and
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the y axis).
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\sa removeSeries(), removeAllSeries()
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*/
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void QChart::addSeries(QAbstractSeries *series)
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{
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Q_ASSERT(series);
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d_ptr->m_dataset->addSeries(series);
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}
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/*!
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Removes the \a series specified in a perameter from the QChartView.
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It releses its ownership of the specified QChartSeries object.
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It does not delete the pointed QChartSeries data object
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\sa addSeries(), removeAllSeries()
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*/
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void QChart::removeSeries(QAbstractSeries *series)
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{
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Q_ASSERT(series);
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d_ptr->m_dataset->removeSeries(series);
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}
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/*!
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Removes all the QChartSeries that have been added to the QChartView
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It also deletes the pointed QChartSeries data objects
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\sa addSeries(), removeSeries()
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*/
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void QChart::removeAllSeries()
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{
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foreach (QAbstractSeries *s , d_ptr->m_dataset->series()){
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removeSeries(s);
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delete s;
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}
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}
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/*!
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Sets the \a brush that is used for painting the background of the chart area.
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*/
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void QChart::setBackgroundBrush(const QBrush &brush)
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{
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d_ptr->m_presenter->setBackgroundBrush(brush);
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}
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/*!
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Gets the brush that is used for painting the background of the chart area.
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*/
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QBrush QChart::backgroundBrush() const
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{
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return d_ptr->m_presenter->backgroundBrush();
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}
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/*!
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Sets the \a pen that is used for painting the background of the chart area.
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*/
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void QChart::setBackgroundPen(const QPen &pen)
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{
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d_ptr->m_presenter->setBackgroundPen(pen);
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}
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/*!
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Gets the pen that is used for painting the background of the chart area.
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*/
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QPen QChart::backgroundPen() const
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{
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return d_ptr->m_presenter->backgroundPen();
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}
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/*!
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Sets the chart \a title. The description text that is drawn above the chart.
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*/
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void QChart::setTitle(const QString &title)
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{
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d_ptr->m_presenter->setTitle(title);
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}
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/*!
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Returns the chart title. The description text that is drawn above the chart.
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*/
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QString QChart::title() const
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{
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return d_ptr->m_presenter->title();
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}
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/*!
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Sets the \a font that is used for drawing the chart description text that is rendered above the chart.
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*/
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void QChart::setTitleFont(const QFont &font)
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{
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d_ptr->m_presenter->setTitleFont(font);
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}
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/*!
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Gets the font that is used for drawing the chart description text that is rendered above the chart.
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*/
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QFont QChart::titleFont() const
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{
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return d_ptr->m_presenter->titleFont();
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}
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/*!
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Sets the \a brush used for rendering the title text.
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*/
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void QChart::setTitleBrush(const QBrush &brush)
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{
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d_ptr->m_presenter->setTitleBrush(brush);
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}
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/*!
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Returns the brush used for rendering the title text.
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*/
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QBrush QChart::titleBrush() const
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{
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return d_ptr->m_presenter->titleBrush();
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}
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void QChart::setTheme(QChart::ChartTheme theme)
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{
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d_ptr->m_themeManager->setTheme(theme);
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}
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QChart::ChartTheme QChart::theme() const
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{
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return d_ptr->m_themeManager->theme()->id();
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}
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/*!
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Zooms in the view by a factor of 2
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*/
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void QChart::zoomIn()
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{
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d_ptr->zoomIn(2.0);
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}
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/*!
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Zooms in the view to a maximum level at which \a rect is still fully visible.
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\note This is not supported for polar charts.
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*/
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void QChart::zoomIn(const QRectF &rect)
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{
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if (d_ptr->m_type == QChart::ChartTypePolar)
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return;
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d_ptr->zoomIn(rect);
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}
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/*!
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Restores the view zoom level to the previous one.
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*/
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void QChart::zoomOut()
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{
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d_ptr->zoomOut(2.0);
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}
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/*!
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Zooms in the view by a \a factor.
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A factor over 1.0 zooms the view in and factor between 0.0 and 1.0 zooms out.
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*/
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void QChart::zoom(qreal factor)
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{
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if (qFuzzyCompare(factor, 0))
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return;
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if (qFuzzyCompare(factor, (qreal)1.0))
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return;
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if (factor < 0)
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return;
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if (factor > 1.0)
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d_ptr->zoomIn(factor);
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else
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d_ptr->zoomOut(1.0 / factor);
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}
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/*!
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Returns the pointer to the x axis object of the chart associated with the specified \a series.
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If no series is provided then pointer to currently visible axis is provided.
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*/
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QAbstractAxis *QChart::axisX(QAbstractSeries *series) const
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{
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QList<QAbstractAxis *> axisList = axes(Qt::Horizontal, series);
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if (axisList.count())
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return axisList[0];
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return 0;
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}
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/*!
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Returns the pointer to the y axis object of the chart associated with the specified \a series.
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If no series is provided then pointer to currently visible axis is provided.
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*/
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QAbstractAxis *QChart::axisY(QAbstractSeries *series) const
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{
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QList<QAbstractAxis *> axisList = axes(Qt::Vertical, series);
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if (axisList.count())
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return axisList[0];
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return 0;
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}
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/*!
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Returns the axes added for the \a series with \a orientation. If no series is provided, then all axes with the
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specified orientation are returned.
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\sa addAxis(), createDefaultAxes()
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*/
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QList<QAbstractAxis *> QChart::axes(Qt::Orientations orientation, QAbstractSeries *series) const
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{
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QList<QAbstractAxis *> result ;
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if (series) {
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foreach (QAbstractAxis *axis, series->attachedAxes()){
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if (orientation.testFlag(axis->orientation()))
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result << axis;
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}
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} else {
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foreach (QAbstractAxis *axis, d_ptr->m_dataset->axes()){
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if (orientation.testFlag(axis->orientation()) && !result.contains(axis))
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result << axis;
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}
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}
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return result;
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}
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/*!
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NOTICE: This function has to be called after series has been added to the chart if no customized axes are set to the chart. Otherwise axisX(), axisY() calls return NULL.
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Creates the axes for the chart based on the series that has already been added to the chart.
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\table
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\header
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\o Series type
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\o X-axis
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\o Y-axis
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\row
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\o QXYSeries
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\o QValueAxis
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\o QValueAxis
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\row
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\o QBarSeries
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\o QBarCategoryAxis
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\o QValueAxis
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\row
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\o QPieSeries
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\o None
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\o None
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\endtable
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If there are several QXYSeries derived series added to the chart and no other series type has been added then only one pair of axes is created.
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If there are sevaral series added of different types then each series gets its own axes pair.
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NOTICE: if there is more than one x and y axes created then no axis is drawn by default and one needs to choose explicitly which axis should be shown.
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Axis specifix to the series can be later obtained from the chart by providing the series as the parameter of axisX(), axisY() function calls.
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QPieSeries does not create any axes.
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\sa axisX(), axisY(), setAxisX(), setAxisY()
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*/
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void QChart::createDefaultAxes()
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{
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d_ptr->m_dataset->createDefaultAxes();
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}
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/*!
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Returns the legend object of the chart. Ownership stays in chart.
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*/
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QLegend *QChart::legend() const
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{
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return d_ptr->m_legend;
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}
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/*!
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Sets the minimum \a margins between the plot area (axes) and the edge of the chart widget.
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Deprecated. Use setMargins().
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*/
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void QChart::setMinimumMargins(const QMargins &margins)
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{
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qWarning() << "QChart::setMinimumMargins is deprecated. Use QChart::setMargins instead.";
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d_ptr->m_presenter->layout()->setMargins(margins);
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}
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/*!
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Returns the rect that contains information about margins (distance between chart widget edge and axes).
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Individual margins can be obtained by calling left, top, right, bottom on the returned rect.
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Deprecated. Use margins().
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*/
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QMargins QChart::minimumMargins() const
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{
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qWarning() << "QChart::minimumMargins is deprecated. Use QChart::margins instead.";
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return d_ptr->m_presenter->layout()->margins();
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}
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/*!
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Sets the minimum \a margins between the plot area (axes) and the edge of the chart widget.
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*/
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void QChart::setMargins(const QMargins &margins)
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{
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d_ptr->m_presenter->layout()->setMargins(margins);
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}
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/*!
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Returns the rect that contains information about margins (distance between chart widget edge and axes).
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Individual margins can be obtained by calling left, top, right, bottom on the returned rect.
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*/
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QMargins QChart::margins() const
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{
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return d_ptr->m_presenter->layout()->margins();
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}
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QChart::ChartType QChart::chartType() const
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{
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|
return d_ptr->m_type;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the the rect within which the drawing of the chart is done.
|
|
|
It does not include the area defines by margins.
|
|
|
*/
|
|
|
QRectF QChart::plotArea() const
|
|
|
{
|
|
|
return d_ptr->m_presenter->geometry();
|
|
|
}
|
|
|
|
|
|
///*!
|
|
|
// TODO: Dummy.
|
|
|
// Adjust the ranges of the axes so that all the data of the specified \a series is visible
|
|
|
// */
|
|
|
//void QChart::adjustViewToSeries(QAbstractSeries* series)
|
|
|
//{
|
|
|
// //
|
|
|
//}
|
|
|
|
|
|
/*!
|
|
|
Sets animation \a options for the chart
|
|
|
*/
|
|
|
void QChart::setAnimationOptions(AnimationOptions options)
|
|
|
{
|
|
|
d_ptr->m_presenter->setAnimationOptions(options);
|
|
|
}
|
|
|
|
|
|
QChart::AnimationOptions QChart::animationOptions() const
|
|
|
{
|
|
|
return d_ptr->m_presenter->animationOptions();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Scrolls the visible area of the chart by the distance defined in the \a dx and \a dy.
|
|
|
|
|
|
For polar charts, \a dx indicates the angle along angular axis instead of distance.
|
|
|
*/
|
|
|
void QChart::scroll(qreal dx, qreal dy)
|
|
|
{
|
|
|
d_ptr->scroll(dx,dy);
|
|
|
}
|
|
|
|
|
|
void QChart::setBackgroundVisible(bool visible)
|
|
|
{
|
|
|
d_ptr->m_presenter->setBackgroundVisible(visible);
|
|
|
}
|
|
|
|
|
|
bool QChart::isBackgroundVisible() const
|
|
|
{
|
|
|
return d_ptr->m_presenter->isBackgroundVisible();
|
|
|
}
|
|
|
|
|
|
void QChart::setDropShadowEnabled(bool enabled)
|
|
|
{
|
|
|
d_ptr->m_presenter->setBackgroundDropShadowEnabled(enabled);
|
|
|
}
|
|
|
|
|
|
bool QChart::isDropShadowEnabled() const
|
|
|
{
|
|
|
return d_ptr->m_presenter->isBackgroundDropShadowEnabled();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns all the series that are added to the chart.
|
|
|
|
|
|
\sa addSeries(), removeSeries(), removeAllSeries()
|
|
|
*/
|
|
|
QList<QAbstractSeries *> QChart::series() const
|
|
|
{
|
|
|
return d_ptr->m_dataset->series();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets \a axis to the chart, which will control the presentation of the \a series
|
|
|
|
|
|
\sa axisX(), axisY(), setAxisY(), createDefaultAxes()
|
|
|
*/
|
|
|
void QChart::setAxisX(QAbstractAxis *axis , QAbstractSeries *series)
|
|
|
{
|
|
|
QList<QAbstractAxis*> list = axes(Qt::Horizontal,series);
|
|
|
|
|
|
foreach(QAbstractAxis* a, list){
|
|
|
d_ptr->m_dataset->removeAxis(a);
|
|
|
delete a;
|
|
|
}
|
|
|
|
|
|
if(!d_ptr->m_dataset->axes().contains(axis))
|
|
|
d_ptr->m_dataset->addAxis(axis,Qt::AlignBottom);
|
|
|
d_ptr->m_dataset->attachAxis(series,axis);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets \a axis to the chart, which will control the presentation of the \a series
|
|
|
|
|
|
\sa axisX(), axisY(), setAxisX(), createDefaultAxes()
|
|
|
*/
|
|
|
void QChart::setAxisY(QAbstractAxis *axis , QAbstractSeries *series)
|
|
|
{
|
|
|
QList<QAbstractAxis*> list = axes(Qt::Vertical,series);
|
|
|
|
|
|
foreach(QAbstractAxis* a, list) {
|
|
|
d_ptr->m_dataset->removeAxis(a);
|
|
|
delete a;
|
|
|
}
|
|
|
|
|
|
if(!d_ptr->m_dataset->axes().contains(axis))
|
|
|
d_ptr->m_dataset->addAxis(axis,Qt::AlignLeft);
|
|
|
d_ptr->m_dataset->attachAxis(series,axis);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Adds \a axis to the chart with \a alignment. The chart takes the ownership of the axis.
|
|
|
\sa removeAxis(), createDefaultAxes(), QAbstractSeries::attachAxis()
|
|
|
*/
|
|
|
void QChart::addAxis(QAbstractAxis *axis, Qt::Alignment alignment)
|
|
|
{
|
|
|
d_ptr->m_dataset->addAxis(axis, alignment);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Removes \a axis from the chart. The ownership is returned to the caller.
|
|
|
\sa addAxis(), createDefaultAxes(), QAbstractSeries::detachAxis()
|
|
|
*/
|
|
|
void QChart::removeAxis(QAbstractAxis *axis)
|
|
|
{
|
|
|
d_ptr->m_dataset->removeAxis(axis);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the value in the \a series domain that corresponds to the charts widget point defines by \a position.
|
|
|
*/
|
|
|
QPointF QChart::mapToValue(const QPointF &position, QAbstractSeries *series)
|
|
|
{
|
|
|
return d_ptr->m_dataset->mapToValue(position, series);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the position on the charts widget that corresponds to the \a value in the \a series domain.
|
|
|
*/
|
|
|
QPointF QChart::mapToPosition(const QPointF &value, QAbstractSeries *series)
|
|
|
{
|
|
|
return d_ptr->m_dataset->mapToPosition(value, series);
|
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
QChartPrivate::QChartPrivate(QChart *q, QChart::ChartType type):
|
|
|
q_ptr(q),
|
|
|
m_type(type),
|
|
|
m_legend(0),
|
|
|
m_dataset(new ChartDataSet(q)),
|
|
|
m_presenter(new ChartPresenter(q, type)),
|
|
|
m_themeManager(new ChartThemeManager(q))
|
|
|
{
|
|
|
QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_presenter, SLOT(handleSeriesAdded(QAbstractSeries*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), m_presenter, SLOT(handleSeriesRemoved(QAbstractSeries*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(axisAdded(QAbstractAxis*)), m_presenter, SLOT(handleAxisAdded(QAbstractAxis*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(axisRemoved(QAbstractAxis*)), m_presenter, SLOT(handleAxisRemoved(QAbstractAxis*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesAdded(QAbstractSeries*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesRemoved(QAbstractSeries*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(axisAdded(QAbstractAxis*)), m_themeManager, SLOT(handleAxisAdded(QAbstractAxis*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(axisRemoved(QAbstractAxis*)), m_themeManager, SLOT(handleAxisRemoved(QAbstractAxis*)));
|
|
|
}
|
|
|
|
|
|
QChartPrivate::~QChartPrivate()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
void QChartPrivate::init()
|
|
|
{
|
|
|
m_legend = new LegendScroller(q_ptr);
|
|
|
q_ptr->setTheme(QChart::ChartThemeLight);
|
|
|
q_ptr->setLayout(m_presenter->layout());
|
|
|
}
|
|
|
|
|
|
void QChartPrivate::zoomIn(qreal factor)
|
|
|
{
|
|
|
QRectF rect = m_presenter->geometry();
|
|
|
rect.setWidth(rect.width() / factor);
|
|
|
rect.setHeight(rect.height() / factor);
|
|
|
rect.moveCenter(m_presenter->geometry().center());
|
|
|
zoomIn(rect);
|
|
|
}
|
|
|
|
|
|
void QChartPrivate::zoomIn(const QRectF &rect)
|
|
|
{
|
|
|
if (!rect.isValid())
|
|
|
return;
|
|
|
|
|
|
QRectF r = rect.normalized();
|
|
|
const QRectF geometry = m_presenter->geometry();
|
|
|
r.translate(-geometry.topLeft());
|
|
|
|
|
|
if (!r.isValid())
|
|
|
return;
|
|
|
|
|
|
QPointF zoomPoint(r.center().x() / geometry.width(), r.center().y() / geometry.height());
|
|
|
m_presenter->setState(ChartPresenter::ZoomInState,zoomPoint);
|
|
|
m_dataset->zoomInDomain(r);
|
|
|
m_presenter->setState(ChartPresenter::ShowState,QPointF());
|
|
|
|
|
|
}
|
|
|
|
|
|
void QChartPrivate::zoomOut(qreal factor)
|
|
|
{
|
|
|
const QRectF geometry = m_presenter->geometry();
|
|
|
|
|
|
QRectF r;
|
|
|
r.setSize(geometry.size() / factor);
|
|
|
r.moveCenter(QPointF(geometry.size().width()/2 ,geometry.size().height()/2));
|
|
|
if (!r.isValid())
|
|
|
return;
|
|
|
|
|
|
QPointF zoomPoint(r.center().x() / geometry.width(), r.center().y() / geometry.height());
|
|
|
m_presenter->setState(ChartPresenter::ZoomOutState,zoomPoint);
|
|
|
m_dataset->zoomOutDomain(r);
|
|
|
m_presenter->setState(ChartPresenter::ShowState,QPointF());
|
|
|
}
|
|
|
|
|
|
void QChartPrivate::scroll(qreal dx, qreal dy)
|
|
|
{
|
|
|
if (dx < 0) m_presenter->setState(ChartPresenter::ScrollLeftState,QPointF());
|
|
|
if (dx > 0) m_presenter->setState(ChartPresenter::ScrollRightState,QPointF());
|
|
|
if (dy < 0) m_presenter->setState(ChartPresenter::ScrollUpState,QPointF());
|
|
|
if (dy > 0) m_presenter->setState(ChartPresenter::ScrollDownState,QPointF());
|
|
|
|
|
|
m_dataset->scrollDomain(dx, dy);
|
|
|
m_presenter->setState(ChartPresenter::ShowState,QPointF());
|
|
|
}
|
|
|
|
|
|
#include "moc_qchart.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
