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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 "qaxis.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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\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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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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}
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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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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 and optional \a axisY onto the chart and takes the ownership of the objects.
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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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*/
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void QChart::addSeries(QAbstractSeries *series, QAxis *axisY)
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{
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Q_ASSERT(series);
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d_ptr->m_dataset->addSeries(series, axisY);
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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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//TODO: refactor me
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d_ptr->m_presenter->createChartBackgroundItem();
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d_ptr->m_presenter->m_backgroundItem->setBrush(brush);
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d_ptr->m_presenter->m_backgroundItem->update();
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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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//TODO: refactor me
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if (!d_ptr->m_presenter->m_backgroundItem) return QBrush();
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return (d_ptr->m_presenter->m_backgroundItem)->brush();
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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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//TODO: refactor me
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d_ptr->m_presenter->createChartBackgroundItem();
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d_ptr->m_presenter->m_backgroundItem->setPen(pen);
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d_ptr->m_presenter->m_backgroundItem->update();
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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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//TODO: refactor me
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if (!d_ptr->m_presenter->m_backgroundItem) return QPen();
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return d_ptr->m_presenter->m_backgroundItem->pen();
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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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//TODO: refactor me
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d_ptr->m_presenter->createChartTitleItem();
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d_ptr->m_presenter->m_titleItem->setText(title);
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d_ptr->m_presenter->updateLayout();
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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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//TODO: refactor me
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if (d_ptr->m_presenter->m_titleItem)
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return d_ptr->m_presenter->m_titleItem->text();
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else
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return QString();
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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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//TODO: refactor me
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d_ptr->m_presenter->createChartTitleItem();
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d_ptr->m_presenter->m_titleItem->setFont(font);
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d_ptr->m_presenter->updateLayout();
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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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if (d_ptr->m_presenter->m_titleItem)
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return d_ptr->m_presenter->m_titleItem->font();
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else
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return QFont();
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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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//TODO: refactor me
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d_ptr->m_presenter->createChartTitleItem();
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d_ptr->m_presenter->m_titleItem->setBrush(brush);
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d_ptr->m_presenter->updateLayout();
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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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//TODO: refactor me
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if (!d_ptr->m_presenter->m_titleItem) return QBrush();
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return d_ptr->m_presenter->m_titleItem->brush();
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}
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/*!
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Sets the \a theme used by the chart for rendering the graphical representation of the data
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\sa theme()
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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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/*!
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Returns the theme enum used by the chart.
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\sa ChartTheme, setTheme()
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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, 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
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*/
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QAxis* QChart::axisX() const
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{
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return d_ptr->m_dataset->axisX();
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}
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/*!
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Returns the pointer to the y axis object of the \a series
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If no \a series is provided then default Y axis of the chart is returned.
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*/
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QAxis* 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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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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Resizes and updates the chart area using the \a event data
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*/
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void QChart::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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d_ptr->m_rect = QRectF(QPoint(0,0),event->newSize());
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QGraphicsWidget::resizeEvent(event);
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d_ptr->m_presenter->setGeometry(d_ptr->m_rect);
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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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/*!
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Returns animation options for the chart
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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 to the left by the distance between two x axis ticks
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*/
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void QChart::scrollLeft()
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{
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d_ptr->m_presenter->scroll(-d_ptr->m_presenter->chartGeometry().width()/(axisX()->ticksCount()-1),0);
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}
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/*!
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Scrolls the visible area of the chart to the right by the distance between two x axis ticks
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*/
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void QChart::scrollRight()
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{
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d_ptr->m_presenter->scroll(d_ptr->m_presenter->chartGeometry().width()/(axisX()->ticksCount()-1),0);
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}
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/*!
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Scrolls the visible area of the chart up by the distance between two y axis ticks
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*/
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void QChart::scrollUp()
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{
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d_ptr->m_presenter->scroll(0,d_ptr->m_presenter->chartGeometry().width()/(axisY()->ticksCount()-1));
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}
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/*!
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Scrolls the visible area of the chart down by the distance between two y axis ticks
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*/
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void QChart::scrollDown()
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{
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d_ptr->m_presenter->scroll(0,-d_ptr->m_presenter->chartGeometry().width()/(axisY()->ticksCount()-1));
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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 delta.
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*/
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void QChart::scroll(const QPointF &delta)
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{
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d_ptr->m_presenter->scroll(-delta.x(), delta.y());
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}
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/*!
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Sets the chart background visibility state to \a visible
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*/
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void QChart::setBackgroundVisible(bool visible)
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{
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//TODO: refactor me
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d_ptr->m_presenter->createChartBackgroundItem();
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d_ptr->m_presenter->m_backgroundItem->setVisible(visible);
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}
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/*!
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Returns the chart's background visibility state
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*/
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bool QChart::isBackgroundVisible() const
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{
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//TODO: refactor me
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if (!d_ptr->m_presenter->m_backgroundItem)
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return false;
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return d_ptr->m_presenter->m_backgroundItem->isVisible();
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}
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/*!
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Sets the background drop shadow effect state to \a enabled.
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*/
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void QChart::setBackgroundDropShadowEnabled(bool enabled)
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{
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d_ptr->m_presenter->createChartBackgroundItem();
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d_ptr->m_presenter->m_backgroundItem->setDropShadowEnabled(enabled);
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}
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/*!
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Returns true if the drop shadow effect is enabled for the chart background.
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*/
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bool QChart::isBackgroundDropShadowEnabled() const
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{
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if (!d_ptr->m_presenter->m_backgroundItem)
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return false;
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return d_ptr->m_presenter->m_backgroundItem->isDropShadowEnabled();
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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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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(QAxis*,Domain*)),m_presenter,SLOT(handleAxisAdded(QAxis*,Domain*)));
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QObject::connect(m_dataset,SIGNAL(axisRemoved(QAxis*)),m_presenter,SLOT(handleAxisRemoved(QAxis*)));
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}
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#include "moc_qchart.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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