qareaseries.cpp
275 lines
| 7.4 KiB
| text/x-c
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CppLexer
Jani Honkonen
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r794 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
| ** This file is part of the Qt Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial License Agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
Michal Klocek
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r421 | #include "qareaseries.h" | ||
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r938 | #include "qareaseries_p.h" | ||
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r421 | #include "qlineseries.h" | ||
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r943 | #include "areachartitem_p.h" | ||
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r950 | #include "legendmarker_p.h" | ||
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r943 | #include "domain_p.h" | ||
| #include "chartdataset_p.h" | ||||
| #include "charttheme_p.h" | ||||
| #include "chartanimator_p.h" | ||||
|
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r421 | |||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| /*! | ||||
| \class QAreaSeries | ||||
| \brief The QAreaSeries class is used for making area charts. | ||||
| \mainclass | ||||
| 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 | ||||
| is emphasized with color. Since the area chart is based on line chart, QAreaSeries constructor needs QLineSeries instance, | ||||
|
Michal Klocek
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r424 | 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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r421 | In that case QAreaSeries should be initiated with two QLineSerie instances. Please note terms "upper" and "lower" boundary can be misleading in cases | ||
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r424 | 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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Michal Klocek
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r421 | |||
| \image areachart.png | ||||
| Creating basic area chart is simple: | ||||
| \code | ||||
| QLineSeries* lineSeries = new QLineSeries(); | ||||
|
Jani Honkonen
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r796 | series->append(0, 6); | ||
| series->append(2, 4); | ||||
|
Michal Klocek
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r421 | QAreaSeries* areaSeries = new QAreaSeries(lineSeries); | ||
| ... | ||||
| chartView->addSeries(areaSeries); | ||||
| \endcode | ||||
| */ | ||||
| /*! | ||||
| \fn virtual QSeriesType QAreaSeries::type() const | ||||
| \brief Returns type of series. | ||||
| \sa QSeries, QSeriesType | ||||
| */ | ||||
| /*! | ||||
| \fn QLineSeries* QAreaSeries::upperSeries() const | ||||
| \brief Returns upperSeries used to define one of area boundaries. | ||||
| */ | ||||
| /*! | ||||
| \fn QLineSeries* QAreaSeries::lowerSeries() const | ||||
| \brief Returns lowerSeries used to define one of area boundaries. Note if QAreaSeries where counstucted wihtout a\ lowerSeries | ||||
| this function return Null pointer. | ||||
| */ | ||||
| /*! | ||||
| \fn QPen QAreaSeries::pen() const | ||||
| \brief Returns the pen used to draw line for this series. | ||||
| \sa setPen() | ||||
| */ | ||||
| /*! | ||||
| \fn QPen QAreaSeries::brush() const | ||||
| \brief Returns the brush used to draw line for this series. | ||||
| \sa setBrush() | ||||
| */ | ||||
| /*! | ||||
| \fn bool QAreaSeries::pointsVisible() const | ||||
| \brief Returns if the points are drawn for this series. | ||||
| \sa setPointsVisible() | ||||
| */ | ||||
|
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r574 | /*! | ||
| \fn void QAreaSeries::clicked(const QPointF& point) | ||||
| \brief Signal is emitted when user clicks the \a point on area chart. | ||||
| */ | ||||
|
Michal Klocek
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r421 | /*! | ||
Marek Rosa
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r940 | \fn void QAreaSeriesPrivate::updated() | ||
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r421 | \brief \internal | ||
| */ | ||||
| /*! | ||||
| Constructs area series object which is a child of \a upperSeries. Area will be spanned between \a | ||||
| upperSeries line and \a lowerSeries line. If no \a lowerSeries is passed to constructor, area is specified by axis x (y=0) instead. | ||||
| When series object is added to QChartView or QChart instance ownerships is transfered. | ||||
| */ | ||||
Tero Ahola
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r761 | QAreaSeries::QAreaSeries(QLineSeries *upperSeries, QLineSeries *lowerSeries) | ||
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r938 | : QSeries(*new QAreaSeriesPrivate(upperSeries,lowerSeries,this),upperSeries) | ||
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r421 | { | ||
| } | ||||
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Tero Ahola
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r761 | |||
|
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r421 | /*! | ||
| Destroys the object. Series added to QChartView or QChart instances are owned by those, | ||||
| and are deleted when mentioned object are destroyed. | ||||
| */ | ||||
| QAreaSeries::~QAreaSeries() | ||||
| { | ||||
| } | ||||
|
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r938 | |||
| QSeries::QSeriesType QAreaSeries::type() const | ||||
| { | ||||
| return QSeries::SeriesTypeArea; | ||||
| } | ||||
| QLineSeries* QAreaSeries::upperSeries() const | ||||
| { | ||||
| Q_D(const QAreaSeries); | ||||
| return d->m_upperSeries; | ||||
| } | ||||
| QLineSeries* QAreaSeries::lowerSeries() const | ||||
| { | ||||
| Q_D(const QAreaSeries); | ||||
| return d->m_lowerSeries; | ||||
| } | ||||
|
Michal Klocek
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r421 | /*! | ||
| Sets \a pen used for drawing area outline. | ||||
| */ | ||||
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Tero Ahola
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r761 | void QAreaSeries::setPen(const QPen &pen) | ||
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r421 | { | ||
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r938 | Q_D(QAreaSeries); | ||
| if (d->m_pen != pen) { | ||||
| d->m_pen = pen; | ||||
| emit d->updated(); | ||||
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r571 | } | ||
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r421 | } | ||
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r938 | QPen QAreaSeries::pen() const | ||
| { | ||||
| Q_D(const QAreaSeries); | ||||
| return d->m_pen; | ||||
| } | ||||
|
Michal Klocek
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r421 | /*! | ||
| Sets \a brush used for filling the area. | ||||
| */ | ||||
sauimone
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r743 | void QAreaSeries::setBrush(const QBrush &brush) | ||
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r421 | { | ||
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r938 | Q_D(QAreaSeries); | ||
| if (d->m_brush != brush) { | ||||
| d->m_brush = brush; | ||||
| emit d->updated(); | ||||
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Michal Klocek
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r571 | } | ||
|
Michal Klocek
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r421 | } | ||
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r938 | |||
| QBrush QAreaSeries::brush() const | ||||
| { | ||||
| Q_D(const QAreaSeries); | ||||
| return d->m_brush; | ||||
| } | ||||
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Michal Klocek
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r421 | /*! | ||
| Sets if data points are \a visible and should be drawn on line. | ||||
| */ | ||||
| void QAreaSeries::setPointsVisible(bool visible) | ||||
| { | ||||
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r938 | Q_D(QAreaSeries); | ||
| if (d->m_pointsVisible != visible) { | ||||
| d->m_pointsVisible = visible; | ||||
| emit d->updated(); | ||||
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Michal Klocek
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r571 | } | ||
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Michal Klocek
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r421 | } | ||
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r938 | bool QAreaSeries::pointsVisible() const | ||
| { | ||||
| Q_D(const QAreaSeries); | ||||
| return d->m_pointsVisible; | ||||
| } | ||||
| bool QAreaSeries::setModel(QAbstractItemModel* model) | ||||
| { | ||||
| Q_UNUSED(model); | ||||
| qWarning()<<"Not implemented"; | ||||
| return false; | ||||
| } | ||||
| QAbstractItemModel* QAreaSeries::model() const | ||||
| { | ||||
| return 0; | ||||
| } | ||||
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
| QAreaSeriesPrivate::QAreaSeriesPrivate(QLineSeries *upperSeries, QLineSeries *lowerSeries,QAreaSeries* q):QSeriesPrivate(q), | ||||
| m_upperSeries(upperSeries), | ||||
| m_lowerSeries(lowerSeries), | ||||
| m_pointsVisible(false) | ||||
| { | ||||
| }; | ||||
|
Michal Klocek
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r943 | void QAreaSeriesPrivate::scaleDomain(Domain& domain) | ||
| { | ||||
| Q_Q(QAreaSeries); | ||||
| qreal minX(domain.minX()); | ||||
| qreal minY(domain.minY()); | ||||
| qreal maxX(domain.maxX()); | ||||
| qreal maxY(domain.maxY()); | ||||
| int tickXCount(domain.tickXCount()); | ||||
| int tickYCount(domain.tickYCount()); | ||||
| QLineSeries* upperSeries = q->upperSeries(); | ||||
| QLineSeries* lowerSeries = q->lowerSeries(); | ||||
| for (int i = 0; i < upperSeries->count(); i++) | ||||
| { | ||||
| qreal x = upperSeries->x(i); | ||||
| qreal y = upperSeries->y(i); | ||||
| minX = qMin(minX, x); | ||||
| minY = qMin(minY, y); | ||||
| maxX = qMax(maxX, x); | ||||
| maxY = qMax(maxY, y); | ||||
| } | ||||
| if(lowerSeries) { | ||||
| for (int i = 0; i < lowerSeries->count(); i++) | ||||
| { | ||||
| qreal x = lowerSeries->x(i); | ||||
| qreal y = lowerSeries->y(i); | ||||
| minX = qMin(minX, x); | ||||
| minY = qMin(minY, y); | ||||
| maxX = qMax(maxX, x); | ||||
| maxY = qMax(maxY, y); | ||||
| }} | ||||
| domain.setRangeX(minX,maxX,tickXCount); | ||||
| domain.setRangeY(minY,maxY,tickYCount); | ||||
| } | ||||
| Chart* QAreaSeriesPrivate::createGraphics(ChartPresenter* presenter) | ||||
| { | ||||
| Q_Q(QAreaSeries); | ||||
| AreaChartItem* area = new AreaChartItem(q,presenter); | ||||
| if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) { | ||||
| presenter->animator()->addAnimation(area->upperLineItem()); | ||||
| if(q->lowerSeries()) presenter->animator()->addAnimation(area->lowerLineItem()); | ||||
| } | ||||
| presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q)); | ||||
| return area; | ||||
| } | ||||
|
Michal Klocek
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r950 | QList<LegendMarker*> QAreaSeriesPrivate::createLegendMarker(QLegend* legend) | ||
| { | ||||
| Q_Q(QAreaSeries); | ||||
| QList<LegendMarker*> list; | ||||
| return list << new AreaLegendMarker(q,legend); | ||||
| } | ||||
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Michal Klocek
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r421 | #include "moc_qareaseries.cpp" | ||
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r938 | #include "moc_qareaseries_p.cpp" | ||
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r421 | |||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||