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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 "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 <QGraphicsScene>
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#include <QGraphicsSceneResizeEvent>
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#include <QGraphicsLayout>
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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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\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::margins
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Margins around the plot area. Note that the margin area is used for drawing chart title, legend and axes.
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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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\fn void QChart::marginsChanged(QRectF newMargins)
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The margins around plot area have changed to \a newMargins. This may happen for example if you change title font size,
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modify axes or hide/show legend.
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*/
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/*!
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Constructs a chart object which is a child of a\a parent. Parameter \a wFlags is passed to the QGraphicsWidget constructor.
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*/
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QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags) : QGraphicsWidget(parent,wFlags),
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d_ptr(new QChartPrivate())
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{
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d_ptr->m_dataset = new ChartDataSet(this);
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d_ptr->m_presenter = new ChartPresenter(this,d_ptr->m_dataset);
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d_ptr->createConnections();
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d_ptr->m_legend = new LegendScroller(this);
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d_ptr->m_presenter->setTheme(QChart::ChartThemeLight, false);
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//connect(d_ptr->m_presenter, SIGNAL(marginsChanged(QRectF)), this, SIGNAL(marginsChanged(QRectF)));
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setLayout(d_ptr->m_presenter->layout());
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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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//delete first presenter , since this is a root of all the graphical items
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setLayout(0);
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delete d_ptr->m_presenter;
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d_ptr->m_presenter=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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d_ptr->m_dataset->removeAllSeries();
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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_presenter->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_presenter->theme();
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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->m_presenter->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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*/
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void QChart::zoomIn(const QRectF& rect)
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{
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if (!rect.isValid()) return;
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d_ptr->m_presenter->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->m_presenter->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 (qFuzzyIsNull(factor))
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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->m_presenter->zoomIn(factor);
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else
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d_ptr->m_presenter->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 asociated 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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return d_ptr->m_dataset->axisX(series);
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}
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/*!
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Returns the pointer to the y axis object of the chart asociated 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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return d_ptr->m_dataset->axisY(series);
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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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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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QRectF QChart::margins() const
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{
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return d_ptr->m_presenter->margins();
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}
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/*!
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Returns the the rect within which the drawing of the chart is done.
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It does not include the area defines by margins.
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*/
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QRectF QChart::plotArea() const
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{
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return d_ptr->m_presenter->geometry();
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}
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///*!
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// TODO: Dummy.
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// Adjest the ranges of the axes so that all the data of the specified \a series is visible
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// */
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//void QChart::adjustViewToSeries(QAbstractSeries* series)
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//{
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// //
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//}
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/*!
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Sets animation \a options for the chart
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*/
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void QChart::setAnimationOptions(AnimationOptions options)
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{
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d_ptr->m_presenter->setAnimationOptions(options);
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}
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QChart::AnimationOptions QChart::animationOptions() const
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{
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return d_ptr->m_presenter->animationOptions();
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}
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/*!
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Scrolls the visible area of the chart by the distance defined in the \a dx and \a dy.
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*/
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void QChart::scroll(qreal dx, qreal dy)
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{
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d_ptr->m_presenter->scroll(dx, dy);
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}
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void QChart::setBackgroundVisible(bool visible)
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{
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d_ptr->m_presenter->setBackgroundVisible(visible);
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}
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bool QChart::isBackgroundVisible() const
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{
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return d_ptr->m_presenter->isBackgroundVisible();
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}
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void QChart::setDropShadowEnabled(bool enabled)
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{
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d_ptr->m_presenter->setBackgroundDropShadowEnabled(enabled);
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}
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bool QChart::isDropShadowEnabled() const
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{
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return d_ptr->m_presenter->isBackgroundDropShadowEnabled();
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}
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/*!
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Returns all the series that are added to the chart.
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\sa addSeries(), removeSeries(), removeAllSeries()
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*/
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QList<QAbstractSeries*> QChart::series() const
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{
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return d_ptr->m_dataset->series();
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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::setMarginsMinimum(const QRectF& margins)
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{
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d_ptr->m_presenter->setMarginsMinimum(margins);
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}
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/*!
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Sets \a axis to the chart, which will control the presentation of the \a series
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\sa axisX(), axisY(), setAxisY(), createDefaultAxes()
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*/
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void QChart::setAxisX(QAbstractAxis* axis , QAbstractSeries *series)
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{
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d_ptr->m_dataset->setAxis(series,axis,Qt::Horizontal);
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}
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/*!
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Sets \a axis to the chart, which will control the presentation of the \a series
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\sa axisX(), axisY(), setAxisX(), createDefaultAxes()
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*/
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void QChart::setAxisY( QAbstractAxis* axis , QAbstractSeries *series)
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{
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d_ptr->m_dataset->setAxis(series,axis,Qt::Vertical);
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QChartPrivate::QChartPrivate():
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m_legend(0),
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m_dataset(0),
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m_presenter(0)
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{
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}
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QChartPrivate::~QChartPrivate()
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{
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}
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void QChartPrivate::createConnections()
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{
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QObject::connect(m_dataset,SIGNAL(seriesAdded(QAbstractSeries*,Domain*)),m_presenter,SLOT(handleSeriesAdded(QAbstractSeries*,Domain*)));
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QObject::connect(m_dataset,SIGNAL(seriesRemoved(QAbstractSeries*)),m_presenter,SLOT(handleSeriesRemoved(QAbstractSeries*)));
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QObject::connect(m_dataset,SIGNAL(axisAdded(QAbstractAxis*,Domain*)),m_presenter,SLOT(handleAxisAdded(QAbstractAxis*,Domain*)));
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QObject::connect(m_dataset,SIGNAL(axisRemoved(QAbstractAxis*)),m_presenter,SLOT(handleAxisRemoved(QAbstractAxis*)));
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//QObject::connect(m_presenter, SIGNAL(marginsChanged(QRectF)), q_ptr, SIGNAL(marginsChanged(QRectF)));
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}
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#include "moc_qchart.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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