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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 "qareaseries.h"
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#include "qareaseries_p.h"
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#include "qlineseries.h"
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#include "areachartitem_p.h"
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#include "legendmarker_p.h"
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#include "domain_p.h"
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#include "chartdataset_p.h"
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#include "charttheme_p.h"
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#include "qvalueaxis.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QAreaSeries
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\brief The QAreaSeries class is used for making area charts.
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\mainclass
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An area chart is used to show quantitative data. It is based on line chart, in the way that area between axis and the line
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is emphasized with color. Since the area chart is based on line chart, QAreaSeries constructor needs QLineSeries instance,
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which defines "upper" boundary of the area. "Lower" boundary is defined by default by axis X. Instead of axis X "lower" boundary can be specified by other line.
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In that case QAreaSeries should be initiated with two QLineSeries instances. Please note terms "upper" and "lower" boundary can be misleading in cases
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where "lower" boundary had bigger values than the "upper" one, however the main point that area between these two boundary lines will be filled.
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See the \l {AreaChart Example} {area chart example} to learn how to create a simple area chart.
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\image examples_areachart.png
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*/
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/*!
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\qmlclass AreaSeries QAreaSeries
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The following QML shows how to create a simple area chart:
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\snippet ../demos/qmlchart/qml/qmlchart/View4.qml 1
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\beginfloatleft
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\image demos_qmlchart4.png
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\endfloat
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\clearfloat
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*/
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/*!
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\property QAreaSeries::upperSeries
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\brief The upper one of the two line series used to define area series boundaries.
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*/
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/*!
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\qmlproperty LineSeries AreaSeries::upperSeries
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The upper one of the two line series used to define area series boundaries.
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*/
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/*!
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\property QAreaSeries::lowerSeries
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The lower one of the two line series used to define are series boundaries. Note if
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QAreaSeries was counstucted wihtout a\ lowerSeries this is null.
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*/
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/*!
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\qmlproperty LineSeries AreaSeries::lowerSeries
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The lower one of the two line series used to define are series boundaries. Note if
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AreaSeries was counstucted wihtout a\ lowerSeries this is null.
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*/
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/*!
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\property QAreaSeries::color
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Fill (brush) color of the series. This is a convenience property for modifying the color of brush.
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\sa QAreaSeries::brush()
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*/
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/*!
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\qmlproperty color AreaSeries::color
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Fill (brush) color of the series.
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*/
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/*!
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\property QAreaSeries::borderColor
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Line (pen) color of the series. This is a convenience property for modifying the color of pen.
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\sa QAreaSeries::pen()
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*/
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/*!
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\qmlproperty color AreaSeries::borderColor
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Line (pen) color of the series.
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*/
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/*!
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\qmlproperty real AreaSeries::borderWidth
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The width of the border line. By default the width is 2.0.
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*/
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/*!
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\fn QPen QAreaSeries::pen() const
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\brief Returns the pen used to draw line for this series.
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\sa setPen()
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*/
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/*!
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\fn QPen QAreaSeries::brush() const
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\brief Returns the brush used to draw line for this series.
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\sa setBrush()
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*/
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/*!
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\fn void QAreaSeries::colorChanged(QColor color)
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\brief Signal is emitted when the fill (brush) color has changed to \a color.
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*/
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/*!
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\qmlsignal AreaSeries::onColorChanged(color color)
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Signal is emitted when the fill (brush) color has changed to \a color.
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*/
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/*!
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\fn void QAreaSeries::borderColorChanged(QColor color)
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\brief Signal is emitted when the line (pen) color has changed to \a color.
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*/
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/*!
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\qmlsignal AreaSeries::onBorderColorChanged(color color)
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Signal is emitted when the line (pen) color has changed to \a color.
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*/
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/*!
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\fn void QAreaSeries::clicked(const QPointF& point)
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\brief Signal is emitted when user clicks the \a point on area chart.
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*/
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/*!
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\qmlsignal AreaSeries::onClicked(QPointF point)
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Signal is emitted when user clicks the \a point on area chart.
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*/
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/*!
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\fn void QAreaSeries::selected()
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The signal is emitted if the user selects/deselects the XY series. The logic for maintaining selections should be
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implemented by the user of QAreaSeries API.
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*/
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/*!
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\qmlsignal AreaSeries::onSelected()
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The signal is emitted if the user selects/deselects the XY series. The logic for maintaining selections should be
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implemented by the user of AreaSeries API.
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*/
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/*!
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\fn void QAreaSeriesPrivate::updated()
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\brief \internal
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*/
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/*!
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Constructs area series object which is a child of \a upperSeries. Area will be spanned between \a
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upperSeries line and \a lowerSeries line. If no \a lowerSeries is passed to constructor, area is specified by axis x (y=0) instead.
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When series object is added to QChartView or QChart instance ownerships is transferred.
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*/
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QAreaSeries::QAreaSeries(QLineSeries *upperSeries, QLineSeries *lowerSeries)
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: QAbstractSeries(*new QAreaSeriesPrivate(upperSeries, lowerSeries, this), upperSeries)
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{
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}
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/*!
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Constructs area series object without upper or lower series with \a parent object.
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*/
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QAreaSeries::QAreaSeries(QObject *parent)
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: QAbstractSeries(*new QAreaSeriesPrivate(0, 0, this), parent)
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{
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}
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/*!
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Destroys the object.
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*/
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QAreaSeries::~QAreaSeries()
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{
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Q_D(QAreaSeries);
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if (d->m_dataset)
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d->m_dataset->removeSeries(this);
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}
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/*!
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Returns QChartSeries::SeriesTypeArea.
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*/
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QAbstractSeries::SeriesType QAreaSeries::type() const
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{
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return QAbstractSeries::SeriesTypeArea;
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}
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/*!
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Sets the \a series that is to be used as the area chart upper series.
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*/
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void QAreaSeries::setUpperSeries(QLineSeries *series)
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{
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Q_D(QAreaSeries);
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d->m_upperSeries = series;
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}
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QLineSeries *QAreaSeries::upperSeries() const
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{
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Q_D(const QAreaSeries);
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return d->m_upperSeries;
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}
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/*!
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Sets the \a series that is to be used as the area chart lower series.
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*/
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void QAreaSeries::setLowerSeries(QLineSeries *series)
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{
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Q_D(QAreaSeries);
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d->m_lowerSeries = series;
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}
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QLineSeries *QAreaSeries::lowerSeries() const
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{
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Q_D(const QAreaSeries);
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return d->m_lowerSeries;
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}
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/*!
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Sets \a pen used for drawing area outline.
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*/
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void QAreaSeries::setPen(const QPen &pen)
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{
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Q_D(QAreaSeries);
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if (d->m_pen != pen) {
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d->m_pen = pen;
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emit d->updated();
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}
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}
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QPen QAreaSeries::pen() const
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{
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Q_D(const QAreaSeries);
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return d->m_pen;
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}
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/*!
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Sets \a brush used for filling the area.
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*/
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void QAreaSeries::setBrush(const QBrush &brush)
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{
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Q_D(QAreaSeries);
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if (d->m_brush != brush) {
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bool emitColorChanged = brush.color() != d->m_brush.color();
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d->m_brush = brush;
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emit d->updated();
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if (emitColorChanged)
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emit colorChanged(brush.color());
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}
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}
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QBrush QAreaSeries::brush() const
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{
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Q_D(const QAreaSeries);
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return d->m_brush;
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}
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void QAreaSeries::setColor(const QColor &color)
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{
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QBrush b = brush();
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if (b == QBrush())
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b.setStyle(Qt::SolidPattern);
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b.setColor(color);
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setBrush(b);
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}
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QColor QAreaSeries::color() const
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{
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return brush().color();
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}
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void QAreaSeries::setBorderColor(const QColor &color)
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{
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QPen p = pen();
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if (p.color() != color) {
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p.setColor(color);
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setPen(p);
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emit borderColorChanged(color);
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}
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}
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QColor QAreaSeries::borderColor() const
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{
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return pen().color();
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}
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/*!
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Sets if data points are \a visible and should be drawn on line.
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*/
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void QAreaSeries::setPointsVisible(bool visible)
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{
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Q_D(QAreaSeries);
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if (d->m_pointsVisible != visible) {
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d->m_pointsVisible = visible;
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emit d->updated();
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}
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}
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/*!
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Returns if the points are drawn for this series.
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\sa setPointsVisible()
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*/
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bool QAreaSeries::pointsVisible() const
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{
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Q_D(const QAreaSeries);
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return d->m_pointsVisible;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QAreaSeriesPrivate::QAreaSeriesPrivate(QLineSeries *upperSeries, QLineSeries *lowerSeries, QAreaSeries *q)
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: QAbstractSeriesPrivate(q),
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m_upperSeries(upperSeries),
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m_lowerSeries(lowerSeries),
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m_pointsVisible(false)
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{
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}
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void QAreaSeriesPrivate::scaleDomain(Domain &domain)
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{
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Q_Q(QAreaSeries);
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qreal minX(domain.minX());
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qreal minY(domain.minY());
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qreal maxX(domain.maxX());
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qreal maxY(domain.maxY());
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QLineSeries *upperSeries = q->upperSeries();
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QLineSeries *lowerSeries = q->lowerSeries();
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const QList<QPointF>& points = upperSeries->points();
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for (int i = 0; i < points.count(); i++) {
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qreal x = points[i].x();
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qreal y = points[i].y();
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minX = qMin(minX, x);
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minY = qMin(minY, y);
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maxX = qMax(maxX, x);
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maxY = qMax(maxY, y);
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}
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if (lowerSeries) {
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const QList<QPointF>& points = lowerSeries->points();
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for (int i = 0; i < points.count(); i++) {
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qreal x = points[i].x();
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qreal y = points[i].y();
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minX = qMin(minX, x);
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minY = qMin(minY, y);
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maxX = qMax(maxX, x);
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maxY = qMax(maxY, y);
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}
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}
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domain.setRange(minX, maxX, minY, maxY);
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}
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ChartElement *QAreaSeriesPrivate::createGraphics(ChartPresenter *presenter)
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{
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Q_Q(QAreaSeries);
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AreaChartItem *area = new AreaChartItem(q, presenter);
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if (presenter->animationOptions().testFlag(QChart::SeriesAnimations)) {
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area->upperLineItem()->setAnimation(new XYAnimation(area->upperLineItem()));
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if (q->lowerSeries())
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area->lowerLineItem()->setAnimation(new XYAnimation(area->lowerLineItem()));
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}
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presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q));
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return area;
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}
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QList<LegendMarker *> QAreaSeriesPrivate::createLegendMarker(QLegend *legend)
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{
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Q_Q(QAreaSeries);
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QList<LegendMarker *> list;
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return list << new AreaLegendMarker(q, legend);
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}
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void QAreaSeriesPrivate::initializeAxis(QAbstractAxis *axis)
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{
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Q_UNUSED(axis);
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}
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QAbstractAxis::AxisType QAreaSeriesPrivate::defaultAxisType(Qt::Orientation orientation) const
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{
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Q_UNUSED(orientation);
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return QAbstractAxis::AxisTypeValue;
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}
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#include "moc_qareaseries.cpp"
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#include "moc_qareaseries_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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