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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 "chartlayout_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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\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::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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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)
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: QGraphicsWidget(parent, wFlags),
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d_ptr(new QChartPrivate(this))
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{
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d_ptr->m_legend = new LegendScroller(this);
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setTheme(QChart::ChartThemeLight);
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//TODO: what is that ?
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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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//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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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_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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*/
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void QChart::zoomIn(const QRectF &rect)
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{
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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 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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if(!series && d_ptr->m_dataset->series().size()>0){
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series = d_ptr->m_dataset->series().first();
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}else{
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return 0;
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}
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QList<QAbstractAxis*> axes = series->attachedAxes();
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QAbstractAxis* bottom=0;
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QAbstractAxis* top=0;
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foreach(QAbstractAxis* axis, axes){
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if(axis->alignment()==Qt::AlignTop){
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top=axis;
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}
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if(axis->alignment()==Qt::AlignBottom){
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bottom=axis;
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}
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}
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return bottom?bottom:top;
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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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if(!series && d_ptr->m_dataset->series().size()>0) {
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series = d_ptr->m_dataset->series().first();
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} else {
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return 0;
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}
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QList<QAbstractAxis*> axes = series->attachedAxes();
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QAbstractAxis* left=0;
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QAbstractAxis* right=0;
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foreach(QAbstractAxis* axis, axes){
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if(axis->alignment()==Qt::AlignLeft){
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left=axis;
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}
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if(axis->alignment()==Qt::AlignRight){
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right=axis;
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}
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}
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return left?left:right;
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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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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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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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/*!
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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->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 \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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QList<QAbstractAxis*> list = axes(Qt::Horizontal,series);
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foreach(QAbstractAxis* a, list){
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if(a->alignment()==axis->alignment()){
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d_ptr->m_dataset->removeAxis(a);
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delete a;
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}
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}
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if(!d_ptr->m_dataset->axes().contains(axis))
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d_ptr->m_dataset->addAxis(axis,Qt::AlignBottom);
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d_ptr->m_dataset->attachAxis(series,axis);
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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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QList<QAbstractAxis*> list = axes(Qt::Vertical,series);
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|
foreach(QAbstractAxis* a, list) {
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if(a->alignment()==axis->alignment()) {
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d_ptr->m_dataset->removeAxis(a);
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delete a;
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}
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}
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if(!d_ptr->m_dataset->axes().contains(axis))
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d_ptr->m_dataset->addAxis(axis,Qt::AlignLeft);
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d_ptr->m_dataset->attachAxis(series,axis);
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}
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void QChart::addAxis(QAbstractAxis *axis,Qt::Alignment aligment)
|
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|
{
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|
d_ptr->m_dataset->addAxis(axis,aligment);
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|
}
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|
void QChart::removeAxis(QAbstractAxis *axis)
|
|
|
{
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|
|
d_ptr->m_dataset->removeAxis(axis);
|
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|
}
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|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
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|
QChartPrivate::QChartPrivate(QChart *q):
|
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|
q_ptr(q),
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|
m_legend(0),
|
|
|
m_dataset(new ChartDataSet(q)),
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|
|
m_presenter(new ChartPresenter(q)),
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|
|
m_themeManager(new ChartThemeManager(q))
|
|
|
{
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|
|
QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_presenter, SLOT(handleSeriesAdded(QAbstractSeries*)));
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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*)), m_presenter, SLOT(handleAxisAdded(QAbstractAxis*)));
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|
QObject::connect(m_dataset, SIGNAL(axisRemoved(QAbstractAxis*)), m_presenter, SLOT(handleAxisRemoved(QAbstractAxis*)));
|
|
|
QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesAdded(QAbstractSeries*)));
|
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|
QObject::connect(m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesRemoved(QAbstractSeries*)));
|
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|
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::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
|
|
|
|
