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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd
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** All rights reserved.
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** For any questions to The Qt Company, please use contact form at http://qt.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** agreement between you and The Qt Company.
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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.io
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**
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****************************************************************************/
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#include <QtCharts/QAbstractSeries>
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#include <private/qabstractseries_p.h>
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#include <private/chartdataset_p.h>
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#include <QtCharts/QChart>
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#include <private/qchart_p.h>
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#include <private/chartitem_p.h>
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#include <private/xydomain_p.h>
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#include <private/xlogydomain_p.h>
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#include <private/logxydomain_p.h>
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#include <private/logxlogydomain_p.h>
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QT_CHARTS_BEGIN_NAMESPACE
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/*!
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\class QAbstractSeries
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\inmodule Qt Charts
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\brief Base class for all Qt Chart series.
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Usually you use the series type specific inherited classes instead of the base class.
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\sa QXYSeries, QLineSeries, QSplineSeries, QScatterSeries, QAreaSeries, QAbstractBarSeries, QStackedBarSeries,
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QPercentBarSeries, QPieSeries
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*/
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/*!
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\qmltype AbstractSeries
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\instantiates QAbstractSeries
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\inqmlmodule QtCharts
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\brief Base class for all Qt Chart series.
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AbstractSeries is the base class for all series.
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The class cannot be instantiated by the user.
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*/
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/*!
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\enum QAbstractSeries::SeriesType
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The type of the series object.
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\value SeriesTypeLine
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\value SeriesTypeArea
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\value SeriesTypeBar
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\value SeriesTypeStackedBar
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\value SeriesTypePercentBar
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\value SeriesTypePie
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\value SeriesTypeScatter
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\value SeriesTypeSpline
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\value SeriesTypeHorizontalBar
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\value SeriesTypeHorizontalStackedBar
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\value SeriesTypeHorizontalPercentBar
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\value SeriesTypeBoxPlot
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*/
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/*!
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\property QAbstractSeries::type
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The type of the series.
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*/
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/*!
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\qmlproperty ChartView.SeriesType AbstractSeries::type
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The type of the series.
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*/
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/*!
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\property QAbstractSeries::name
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\brief name of the series property. The name is shown in legend for series and supports html formatting.
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*/
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/*!
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\qmlproperty string AbstractSeries::name
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Name of the series. The name is shown in legend for series and supports html formatting.
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*/
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/*!
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\fn void QAbstractSeries::nameChanged()
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This signal is emitted when the series name changes.
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*/
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/*!
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\qmlsignal AbstractSeries::onNameChanged()
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This signal is emitted when the series name changes.
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*/
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/*!
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\property QAbstractSeries::visible
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\brief whether the series is visible or not; true by default.
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*/
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/*!
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\qmlproperty bool AbstractSeries::visible
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Visibility of the series. True by default.
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*/
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/*!
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\fn void QAbstractSeries::visibleChanged()
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Emitted when the series visibility changes.
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*/
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/*!
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\qmlsignal AbstractSeries::onVisibleChanged()
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Emitted when the series visibility changes.
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*/
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/*!
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\property QAbstractSeries::opacity
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\brief The opacity of the series.
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By default the opacity is 1.0. The valid values range from 0.0 (transparent) to 1.0 (opaque).
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*/
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/*!
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\qmlproperty real AbstractSeries::opacity
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The opacity of the series. By default the opacity is 1.0.
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The valid values range from 0.0 (transparent) to 1.0 (opaque).
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*/
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/*!
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\fn void QAbstractSeries::opacityChanged()
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Emitted when the opacity of the series changes.
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*/
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/*!
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\qmlsignal AbstractSeries::onOpacityChanged()
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Emitted when the opacity of the series changes.
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*/
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/*!
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\property QAbstractSeries::useOpenGL
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\brief Specifies whether or not the series drawing is accelerated with OpenGL.
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Drawing series with OpenGL is supported only for QLineSeries and QScatterSeries.
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Line series used as edge series for a QAreaSeries cannot use OpenGL acceleration.
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When a chart contains any series that are drawn with OpenGL, a transparent QOpenGLWidget
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is created on top of the chart plot area. Specified series are not drawn on the underlying
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QGraphicsView, but are instead drawn on the created QOpenGLWidget.
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Performance gained from using OpenGL to accelerate series drawing depends on the underlying
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hardware, but in most cases it is significant. For example, on a standard desktop computer,
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enabling OpenGL acceleration for a series typically allows rendering at least hundred times
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more points without reduction on the frame rate.
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Chart size also has less effect on the frame rate.
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The OpenGL acceleration of series drawing is meant for use cases that need fast drawing of
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large numbers of points. It is optimized for efficiency, and therefore the series using
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it lack support for some features available to non-accelerated series.
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There are the following restrictions imposed on charts and series when using OpenGL
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acceleration:
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\list
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\li Series animations are not supported for accelerated series.
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\li Antialiasing is not supported for accelerated series.
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\li Pen styles and marker shapes are ignored for accelerated series.
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Only solid lines and plain scatter dots are supported.
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The scatter dots may be circular or rectangular, depending on the underlying graphics
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hardware and drivers.
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\li Polar charts are not supported for accelerated series.
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\li Since the accelerated series are drawn on top of the entire graphics view, they get drawn
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on top of any other graphics items that you may have on top chart in the same scene.
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\li To enable QOpenGLWidget to be partially transparent, it needs to be stacked on top of
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all other widgets. This means you cannot have other widgets partially covering the
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chart.
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\endlist
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The default value is \c{false}.
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*/
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/*!
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\qmlproperty bool AbstractSeries::useOpenGL
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Specifies whether or not the series is drawn with OpenGL.
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Drawing series with OpenGL is supported only for LineSeries and ScatterSeries.
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For more details, see QAbstractSeries::useOpenGL documentation. QML applications have similar
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restrictions as those listed in QAbstractSeries::useOpenGL documentation,
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except there is no restriction about covering the ChartView partially with other
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items due to different rendering mechanism.
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The default value is \c{false}.
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*/
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/*!
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\fn void QAbstractSeries::useOpenGLChanged()
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Emitted when the useOpenGL property value changes.
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*/
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/*!
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\qmlsignal AbstractSeries::onUseOpenGLChanged()
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Emitted when the useOpenGL property value changes.
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*/
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/*!
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\internal
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\brief Constructs QAbstractSeries object with \a parent.
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*/
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QAbstractSeries::QAbstractSeries(QAbstractSeriesPrivate &d, QObject *parent) :
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QObject(parent),
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d_ptr(&d)
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{
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}
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/*!
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\brief Virtual destructor for the chart series.
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*/
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QAbstractSeries::~QAbstractSeries()
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{
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if (d_ptr->m_chart)
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qFatal("Series still bound to a chart when destroyed!");
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}
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void QAbstractSeries::setName(const QString &name)
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{
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if (name != d_ptr->m_name) {
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d_ptr->m_name = name;
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emit nameChanged();
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}
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}
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QString QAbstractSeries::name() const
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{
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return d_ptr->m_name;
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}
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void QAbstractSeries::setVisible(bool visible)
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{
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if (visible != d_ptr->m_visible) {
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d_ptr->m_visible = visible;
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emit visibleChanged();
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}
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}
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bool QAbstractSeries::isVisible() const
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{
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return d_ptr->m_visible;
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}
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qreal QAbstractSeries::opacity() const
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{
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return d_ptr->m_opacity;
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}
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void QAbstractSeries::setOpacity(qreal opacity)
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{
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if (opacity != d_ptr->m_opacity) {
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d_ptr->m_opacity = opacity;
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emit opacityChanged();
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}
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}
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void QAbstractSeries::setUseOpenGL(bool enable)
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{
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#ifdef QT_NO_OPENGL
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Q_UNUSED(enable)
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#else
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bool polarChart = d_ptr->m_chart && d_ptr->m_chart->chartType() == QChart::ChartTypePolar;
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bool supportedSeries = (type() == SeriesTypeLine || type() == SeriesTypeScatter);
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if ((!enable || !d_ptr->m_blockOpenGL)
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&& supportedSeries
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&& enable != d_ptr->m_useOpenGL
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&& (!enable || !polarChart)) {
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d_ptr->m_useOpenGL = enable;
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emit useOpenGLChanged();
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}
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#endif
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}
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bool QAbstractSeries::useOpenGL() const
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{
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return d_ptr->m_useOpenGL;
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}
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/*!
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\brief Returns the chart where series belongs to.
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Set automatically when the series is added to the chart
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and unset when the series is removed from the chart.
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*/
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QChart *QAbstractSeries::chart() const
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{
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return d_ptr->m_chart;
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}
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/*!
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\brief Sets the visibility of the series to true.
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\sa setVisible(), isVisible()
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*/
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void QAbstractSeries::show()
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{
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setVisible(true);
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}
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/*!
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\brief Sets the visibility of the series to false.
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\sa setVisible(), isVisible()
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*/
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void QAbstractSeries::hide()
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{
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setVisible(false);
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}
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/*!
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Attach \a axis to the series.
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\return true if the axis was attached successfully, false otherwise.
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\note If multiple axes of same orientation are attached to same series,
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they will have same min/max ranges.
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\sa QChart::addAxis(), QChart::createDefaultAxes()
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*/
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bool QAbstractSeries::attachAxis(QAbstractAxis* axis)
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{
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if(d_ptr->m_chart) {
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return d_ptr->m_chart->d_ptr->m_dataset->attachAxis(this, axis);
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} else {
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qWarning()<<"Series not in the chart. Please addSeries to chart first.";
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return false;
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}
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}
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/*!
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Detach \a axis from the series.
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\return true if the axis was detached successfully, false otherwise.
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\sa QChart::removeAxis()
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*/
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bool QAbstractSeries::detachAxis(QAbstractAxis* axis)
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{
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if(d_ptr->m_chart) {
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return d_ptr->m_chart->d_ptr->m_dataset->detachAxis(this, axis);
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}
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else {
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qWarning()<<"Series not in the chart. Please addSeries to chart first.";
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return false;
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}
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}
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/*!
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Returns the list of axes attached to the series. Usually there is an x-axis and a y-axis attached to a series, except
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in case of a QPieSeries, which does not have any axes attached.
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\sa attachAxis(), detachAxis()
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*/
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QList<QAbstractAxis*> QAbstractSeries::attachedAxes()
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{
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return d_ptr->m_axes;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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QAbstractSeriesPrivate::QAbstractSeriesPrivate(QAbstractSeries *q)
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: q_ptr(q),
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m_chart(0),
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m_item(0),
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m_domain(new XYDomain()),
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m_visible(true),
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m_opacity(1.0),
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m_useOpenGL(false),
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m_blockOpenGL(false)
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{
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}
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QAbstractSeriesPrivate::~QAbstractSeriesPrivate()
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{
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}
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void QAbstractSeriesPrivate::setDomain(AbstractDomain* domain)
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{
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Q_ASSERT(domain);
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if(m_domain.data()!=domain) {
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if(!m_item.isNull()) QObject::disconnect(m_domain.data(), SIGNAL(updated()), m_item.data(), SLOT(handleDomainUpdated()));
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m_domain.reset(domain);
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if(!m_item.isNull()) {
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QObject::connect(m_domain.data(), SIGNAL(updated()),m_item.data(), SLOT(handleDomainUpdated()));
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m_item->handleDomainUpdated();
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}
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}
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}
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void QAbstractSeriesPrivate::setPresenter(ChartPresenter *presenter)
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{
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m_presenter = presenter;
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}
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ChartPresenter *QAbstractSeriesPrivate::presenter() const
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{
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return m_presenter;
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}
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void QAbstractSeriesPrivate::initializeGraphics(QGraphicsItem* parent)
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{
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Q_ASSERT(!m_item.isNull());
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Q_UNUSED(parent);
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QObject::connect(m_domain.data(), SIGNAL(updated()),m_item.data(), SLOT(handleDomainUpdated()));
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}
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void QAbstractSeriesPrivate::initializeAnimations(QChart::AnimationOptions options, int duration,
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QEasingCurve &curve)
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{
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Q_UNUSED(options);
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Q_UNUSED(duration);
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Q_UNUSED(curve);
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}
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bool QAbstractSeriesPrivate::reverseXAxis()
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{
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bool reverseXAxis = false;
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if (m_axes.size() != 0 && !(m_chart->chartType() == QChart::ChartTypePolar)) {
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int i = 0;
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while (i < m_axes.size()) {
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if (m_axes.at(i)->orientation() == Qt::Horizontal && m_axes.at(i)->isReverse()) {
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reverseXAxis = true;
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break;
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}
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i++;
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}
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}
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return reverseXAxis;
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}
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bool QAbstractSeriesPrivate::reverseYAxis()
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{
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bool reverseYAxis = false;
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if (m_axes.size() != 0 && !(m_chart->chartType() == QChart::ChartTypePolar)) {
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int i = 0;
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while (i < m_axes.size()) {
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if (m_axes.at(i)->orientation() == Qt::Vertical && m_axes.at(i)->isReverse()) {
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reverseYAxis = true;
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break;
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}
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i++;
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}
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}
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return reverseYAxis;
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}
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// This function can be used to explicitly block OpenGL use from some otherwise supported series,
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// such as the line series used as edge series of an area series.
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void QAbstractSeriesPrivate::setBlockOpenGL(bool enable)
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{
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m_blockOpenGL = enable;
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if (enable)
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q_ptr->setUseOpenGL(false);
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}
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#include "moc_qabstractseries.cpp"
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#include "moc_qabstractseries_p.cpp"
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QT_CHARTS_END_NAMESPACE
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