/**************************************************************************** ** ** 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 ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "declarativechart.h" #include #include #include "declarativelineseries.h" #include "declarativeareaseries.h" #include "declarativebarseries.h" #include "declarativepieseries.h" #include "declarativesplineseries.h" #include "declarativescatterseries.h" #include "qbarcategoryaxis.h" #include "qvalueaxis.h" #include "qcategoryaxis.h" #include "qabstractseries_p.h" #include "declarativemargins.h" #include "chartdataset_p.h" #include "qchart_p.h" #ifndef QT_ON_ARM #include "qdatetimeaxis.h" #endif QTCOMMERCIALCHART_BEGIN_NAMESPACE /*! \qmlclass ChartView DeclarativeChart ChartView element is the parent that is responsible for showing different chart series types. The following QML shows how to create a simple chart with one pie series: \snippet ../examples/qmlpiechart/qml/qmlpiechart/main.qml 1 \snippet ../examples/qmlpiechart/qml/qmlpiechart/main.qml 2 \snippet ../examples/qmlpiechart/qml/qmlpiechart/main.qml 3 \beginfloatleft \image examples_qmlpiechart.png \endfloat \clearfloat */ /*! \qmlproperty Theme ChartView::theme Theme defines the visual appearance of the chart, including for example colors, fonts, line widths and chart background. */ /*! \qmlproperty Animation ChartView::animationOptions Animation configuration of the chart. One of ChartView.NoAnimation, ChartView.GridAxisAnimations, ChartView.SeriesAnimations or ChartView.AllAnimations. */ /*! \qmlproperty Font ChartView::titleFont The title font of the chart See the \l {Font} {QML Font Element} for detailed documentation. */ /*! \qmlproperty string ChartView::title The title of the chart, shown on top of the chart. \sa ChartView::titleColor */ /*! \qmlproperty color ChartView::titleColor The color of the title text. */ /*! \qmlproperty Legend ChartView::legend The legend of the chart. Legend lists all the series, pie slices and bar sets added on the chart. */ /*! \qmlproperty int ChartView::count The count of series added to the chart. */ /*! \qmlproperty color ChartView::backgroundColor The color of the chart's background. By default background color is defined by chart theme. \sa ChartView::theme */ /*! \qmlproperty bool ChartView::dropShadowEnabled The chart's border drop shadow. Set to true to enable drop shadow. */ /*! \qmlproperty real ChartView::topMargin Deprecated. Use minimumMargins and plotArea instead. */ /*! \qmlproperty real ChartView::bottomMargin Deprecated. Use minimumMargins and plotArea instead. */ /*! \qmlproperty real ChartView::leftMargin Deprecated. Use minimumMargins and plotArea instead. */ /*! \qmlproperty real ChartView::rightMargin Deprecated. Use minimumMargins and plotArea instead. */ /*! \qmlproperty Margins ChartView::minimumMargins The minimum margins allowed between the outer bounds and the plotArea of the ChartView. Margins area of ChartView is used for drawing title, axes and legend. Please note that setting the properties of minimumMargins may be bigger than the defined value, depending on other ChartView properties that affect it's layout. If you need to know the actual plotting area used at any given time, you can check ChartView::plotArea instead. */ /*! \qmlproperty rect ChartView::plotArea The area on the ChartView that is used for drawing series. This is the ChartView rect without the margins. \sa ChartView::minimumMargins */ /*! \qmlmethod AbstractSeries ChartView::series(int index) Returns the series with \a index on the chart. This allows you to loop through the series of a chart together with the count property of the chart. */ /*! \qmlmethod AbstractSeries ChartView::series(string name) Returns the first series on the chart with \a name. If there is no series with that name, returns null. */ /*! \qmlmethod AbstractSeries ChartView::createSeries(SeriesType type, string name, AbstractAxis axisX, AbstractAxis axisY) Creates a series object of \a type to the chart with name \a name, optional axis \a axisX and optional axis \a axisY. For example: \code // lineSeries is a LineSeries object that has already been added to the ChartView; re-use it's axes var myAxisX = chartView.axisX(lineSeries); var myAxisY = chartView.axisY(lineSeries); var scatter = chartView.createSeries(ChartView.SeriesTypeScatter, "scatter series", myAxisX, myAxisY); \endcode */ /*! \qmlmethod ChartView::removeSeries(AbstractSeries series) Removes the \a series from the chart. The series object is also destroyed. */ /*! \qmlmethod ChartView::removeAllSeries() Removes all series from the chart. All the series objects are also destroyed. */ /*! \qmlmethod Axis ChartView::axisX(AbstractSeries series) The x-axis of the series. */ /*! \qmlmethod Axis ChartView::axisY(AbstractSeries series) The y-axis of the series. */ /*! \qmlmethod ChartView::zoomY(real factor) Zooms in by \a factor on the center of the chart. */ /*! \qmlmethod ChartView::scrollLeft(real pixels) Scrolls to left by \a pixels. This is a convenience function that suits for example for key navigation. \sa ValueAxis::min, ValueAxis::max, BarCategoryAxis::min, BarCategoryAxis::max */ /*! \qmlmethod ChartView::scrollRight(real pixels) Scrolls to right by \a pixels. This is a convenience function that suits for example for key navigation. \sa ValueAxis::min, ValueAxis::max, BarCategoryAxis::min, BarCategoryAxis::max */ /*! \qmlmethod ChartView::scrollUp(real pixels) Scrolls up by \a pixels. This is a convenience function that suits for example for key navigation. \sa ValueAxis::min, ValueAxis::max, BarCategoryAxis::min, BarCategoryAxis::max */ /*! \qmlmethod ChartView::scrollDown(real pixels) Scrolls down by \a pixels. This is a convenience function that suits for example for key navigation. \sa ValueAxis::min, ValueAxis::max, BarCategoryAxis::min, BarCategoryAxis::max */ /*! \qmlsignal ChartView::onPlotAreaChanged(rect plotArea) The plot area of the chart has changed. This may happen for example, if you modify minimumMargins or if you resize the chart, or if you modify font size related properties of the legend or chart title. */ /*! \qmlsignal ChartView::seriesAdded(AbstractSeries series) The \a series has been added to the chart. */ /*! \qmlsignal ChartView::seriesRemoved(AbstractSeries series) The \a series has been removed from the chart. Please note that \a series is no longer a valid object after the signal handler has completed. */ DeclarativeChart::DeclarativeChart(QDeclarativeItem *parent) : QDeclarativeItem(parent), m_chart(new QChart(this)) { setFlag(QGraphicsItem::ItemHasNoContents, false); m_margins = new DeclarativeMargins(this); m_margins->setTop(m_chart->margins().top()); m_margins->setLeft(m_chart->margins().left()); m_margins->setRight(m_chart->margins().right()); m_margins->setBottom(m_chart->margins().bottom()); connect(m_margins, SIGNAL(topChanged(int,int,int,int)), this, SLOT(changeMinimumMargins(int,int,int,int))); connect(m_margins, SIGNAL(bottomChanged(int,int,int,int)), this, SLOT(changeMinimumMargins(int,int,int,int))); connect(m_margins, SIGNAL(leftChanged(int,int,int,int)), this, SLOT(changeMinimumMargins(int,int,int,int))); connect(m_margins, SIGNAL(rightChanged(int,int,int,int)), this, SLOT(changeMinimumMargins(int,int,int,int))); connect(m_chart->d_ptr->m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), this, SLOT(handleSeriesAdded(QAbstractSeries*))); connect(m_chart->d_ptr->m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), this, SIGNAL(seriesRemoved(QAbstractSeries*))); } void DeclarativeChart::handleSeriesAdded(QAbstractSeries *series) { emit seriesAdded(series); } void DeclarativeChart::changeMinimumMargins(int top, int bottom, int left, int right) { m_chart->setMargins(QMargins(left, top, right, bottom)); emit minimumMarginsChanged(); emit plotAreaChanged(m_chart->plotArea()); } DeclarativeChart::~DeclarativeChart() { delete m_chart; } void DeclarativeChart::childEvent(QChildEvent *event) { if (event->type() == QEvent::ChildAdded) { if (qobject_cast(event->child())) { m_chart->addSeries(qobject_cast(event->child())); } } } void DeclarativeChart::componentComplete() { foreach (QObject *child, children()) { if (qobject_cast(child)) { // Add series to the chart QAbstractSeries *series = qobject_cast(child); m_chart->addSeries(series); // Set optional user defined axes for the series and connect axis related signals if (qobject_cast(child)) { DeclarativeLineSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeSplineSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeScatterSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeAreaSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeStackedBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativePercentBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeHorizontalBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeHorizontalStackedBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } else if (qobject_cast(child)) { DeclarativeHorizontalPercentBarSeries *s = qobject_cast(child); connect(s, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*))); connect(s, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*))); setAxisX(s->axisX(), s); setAxisY(s->axisY(), s); } } } // Create the missing axes for the series that cannot be painted without axes foreach (QAbstractSeries *chartSeries, m_chart->series()) createDefaultAxes(chartSeries); QDeclarativeItem::componentComplete(); } void DeclarativeChart::handleAxisXSet(QAbstractAxis *axis) { // qDebug() << "DeclarativeChart::handleAxisXSet" << sender() << axis; if (axis && qobject_cast(sender())) m_chart->setAxisX(axis, qobject_cast(sender())); else qWarning() << "Trying to set axisX to null."; } void DeclarativeChart::handleAxisYSet(QAbstractAxis *axis) { // qDebug() << "DeclarativeChart::handleAxisYSet" << sender() << axis; if (axis && qobject_cast(sender())) m_chart->setAxisY(axis, qobject_cast(sender())); else qWarning() << "Trying to set axisY to null."; } void DeclarativeChart::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) { // qDebug() << "DeclarativeChart::geometryChanged" << newGeometry.width() << newGeometry.height(); if (newGeometry.isValid()) { if (newGeometry.width() > 0 && newGeometry.height() > 0) { m_chart->resize(newGeometry.width(), newGeometry.height()); } } QDeclarativeItem::geometryChanged(newGeometry, oldGeometry); // It would be better to trigger the plotAreaChanged signal from QChart::plotAreaChanged or // similar. Since that kind of a signal is not clearly needed in the C++ API the work-around is // to implement it here for the QML API purposes. emit plotAreaChanged(m_chart->plotArea()); } void DeclarativeChart::setTheme(DeclarativeChart::Theme theme) { QChart::ChartTheme chartTheme = (QChart::ChartTheme) theme; if (chartTheme != m_chart->theme()) m_chart->setTheme(chartTheme); } DeclarativeChart::Theme DeclarativeChart::theme() { return (DeclarativeChart::Theme) m_chart->theme(); } void DeclarativeChart::setAnimationOptions(DeclarativeChart::Animation animations) { QChart::AnimationOption animationOptions = (QChart::AnimationOption) animations; if (animationOptions != m_chart->animationOptions()) m_chart->setAnimationOptions(animationOptions); } DeclarativeChart::Animation DeclarativeChart::animationOptions() { if (m_chart->animationOptions().testFlag(QChart::AllAnimations)) return DeclarativeChart::AllAnimations; else if (m_chart->animationOptions().testFlag(QChart::GridAxisAnimations)) return DeclarativeChart::GridAxisAnimations; else if (m_chart->animationOptions().testFlag(QChart::SeriesAnimations)) return DeclarativeChart::SeriesAnimations; else return DeclarativeChart::NoAnimation; } void DeclarativeChart::setTitle(QString title) { if (title != m_chart->title()) m_chart->setTitle(title); } QString DeclarativeChart::title() { return m_chart->title(); } QAbstractAxis *DeclarativeChart::axisX(QAbstractSeries *series) { return m_chart->axisX(series); } QAbstractAxis *DeclarativeChart::axisY(QAbstractSeries *series) { return m_chart->axisY(series); } QLegend *DeclarativeChart::legend() { return m_chart->legend(); } void DeclarativeChart::setTitleColor(QColor color) { QBrush b = m_chart->titleBrush(); if (color != b.color()) { b.setColor(color); m_chart->setTitleBrush(b); emit titleColorChanged(color); } } QFont DeclarativeChart::titleFont() const { return m_chart->titleFont(); } void DeclarativeChart::setTitleFont(const QFont &font) { m_chart->setTitleFont(font); } QColor DeclarativeChart::titleColor() { return m_chart->titleBrush().color(); } void DeclarativeChart::setBackgroundColor(QColor color) { QBrush b = m_chart->backgroundBrush(); if (b.style() != Qt::SolidPattern || color != b.color()) { b.setStyle(Qt::SolidPattern); b.setColor(color); m_chart->setBackgroundBrush(b); emit backgroundColorChanged(); } } QColor DeclarativeChart::backgroundColor() { return m_chart->backgroundBrush().color(); } int DeclarativeChart::count() { return m_chart->series().count(); } void DeclarativeChart::setDropShadowEnabled(bool enabled) { if (enabled != m_chart->isDropShadowEnabled()) { m_chart->setDropShadowEnabled(enabled); dropShadowEnabledChanged(enabled); } } bool DeclarativeChart::dropShadowEnabled() { return m_chart->isDropShadowEnabled(); } qreal DeclarativeChart::topMargin() { qWarning() << "ChartView.topMargin is deprecated. Use minimumMargins and plotArea instead."; return m_chart->plotArea().top(); } qreal DeclarativeChart::bottomMargin() { qWarning() << "ChartView.bottomMargin is deprecated. Use minimumMargins and plotArea instead."; return m_chart->plotArea().bottom(); } qreal DeclarativeChart::leftMargin() { qWarning() << "ChartView.leftMargin is deprecated. Use minimumMargins and plotArea instead."; return m_chart->plotArea().left(); } qreal DeclarativeChart::rightMargin() { qWarning() << "ChartView.rightMargin is deprecated. Use minimumMargins and plotArea instead."; return m_chart->plotArea().right(); } void DeclarativeChart::zoom(qreal factor) { m_chart->zoom(factor); } void DeclarativeChart::scrollLeft(qreal pixels) { m_chart->scroll(-pixels, 0); } void DeclarativeChart::scrollRight(qreal pixels) { m_chart->scroll(pixels, 0); } void DeclarativeChart::scrollUp(qreal pixels) { m_chart->scroll(0, pixels); } void DeclarativeChart::scrollDown(qreal pixels) { m_chart->scroll(0, -pixels); } QAbstractSeries *DeclarativeChart::series(int index) { if (index < m_chart->series().count()) { return m_chart->series().at(index); } return 0; } QAbstractSeries *DeclarativeChart::series(QString seriesName) { foreach (QAbstractSeries *series, m_chart->series()) { if (series->name() == seriesName) return series; } return 0; } QAbstractSeries *DeclarativeChart::createSeries(DeclarativeChart::SeriesType type, QString name) { return createSeries(type, name, 0, 0); } QAbstractSeries *DeclarativeChart::createSeries(DeclarativeChart::SeriesType type, QString name, QAbstractAxis *axisX, QAbstractAxis *axisY) { QAbstractSeries *series = 0; switch (type) { case DeclarativeChart::SeriesTypeLine: series = new DeclarativeLineSeries(); break; case DeclarativeChart::SeriesTypeArea: { DeclarativeAreaSeries *area = new DeclarativeAreaSeries(); area->setUpperSeries(new DeclarativeLineSeries()); series = area; break; } case DeclarativeChart::SeriesTypeStackedBar: series = new DeclarativeStackedBarSeries(); break; case DeclarativeChart::SeriesTypePercentBar: series = new DeclarativePercentBarSeries(); break; case DeclarativeChart::SeriesTypeBar: series = new DeclarativeBarSeries(); break; case DeclarativeChart::SeriesTypeHorizontalBar: series = new DeclarativeHorizontalBarSeries(); break; case DeclarativeChart::SeriesTypeHorizontalPercentBar: series = new DeclarativeHorizontalPercentBarSeries(); break; case DeclarativeChart::SeriesTypeHorizontalStackedBar: series = new DeclarativeHorizontalStackedBarSeries(); break; case DeclarativeChart::SeriesTypePie: series = new DeclarativePieSeries(); break; case DeclarativeChart::SeriesTypeScatter: series = new DeclarativeScatterSeries(); break; case DeclarativeChart::SeriesTypeSpline: series = new DeclarativeSplineSeries(); break; default: qWarning() << "Illegal series type"; } if (series) { series->setName(name); m_chart->addSeries(series); // Set possible user defined axes setAxisX(axisX, series); setAxisY(axisY, series); // Then create the missing axes createDefaultAxes(series); } return series; } void DeclarativeChart::removeSeries(QAbstractSeries *series) { if (series) m_chart->removeSeries(series); else qWarning("removeSeries: cannot remove null"); } void DeclarativeChart::setAxisX(QAbstractAxis *axis, QAbstractSeries *series) { if (axis) m_chart->setAxisX(axis, series); } void DeclarativeChart::setAxisY(QAbstractAxis *axis, QAbstractSeries *series) { if (axis) m_chart->setAxisY(axis, series); } void DeclarativeChart::createDefaultAxes() { qWarning() << "ChartView.createDefaultAxes() is deprecated. Axes are created automatically."; } void DeclarativeChart::createDefaultAxes(QAbstractSeries *series) { foreach (QAbstractSeries *s, m_chart->series()) { // If there is already an x axis of the correct type, re-use it if (!m_chart->axisX(series) && s != series && m_chart->axisX(s) && m_chart->axisX(s)->type() == series->d_ptr->defaultAxisType(Qt::Horizontal)) m_chart->setAxisX(m_chart->axisX(s), series); // If there is already a y axis of the correct type, re-use it if (!m_chart->axisY(series) && s != series && m_chart->axisY(s) && m_chart->axisY(s)->type() == series->d_ptr->defaultAxisType(Qt::Vertical)) m_chart->setAxisY(m_chart->axisY(s), series); } // If no x axis of correct type was found, create a new x axis based of default axis type if (!m_chart->axisX(series)) { switch (series->d_ptr->defaultAxisType(Qt::Horizontal)) { case QAbstractAxis::AxisTypeValue: m_chart->setAxisX(new QValueAxis(this), series); break; case QAbstractAxis::AxisTypeBarCategory: m_chart->setAxisX(new QBarCategoryAxis(this), series); break; case QAbstractAxis::AxisTypeCategory: m_chart->setAxisX(new QCategoryAxis(this), series); break; #ifndef QT_ON_ARM case QAbstractAxis::AxisTypeDateTime: m_chart->setAxisX(new QDateTimeAxis(this), series); break; #endif default: // Do nothing, assume AxisTypeNoAxis break; } } // If no y axis of correct type was found, create a new y axis based of default axis type if (!m_chart->axisY(series)) { switch (series->d_ptr->defaultAxisType(Qt::Vertical)) { case QAbstractAxis::AxisTypeValue: m_chart->setAxisY(new QValueAxis(this), series); break; case QAbstractAxis::AxisTypeBarCategory: m_chart->setAxisY(new QBarCategoryAxis(this), series); break; case QAbstractAxis::AxisTypeCategory: m_chart->setAxisY(new QCategoryAxis(this), series); break; #ifndef QT_ON_ARM case QAbstractAxis::AxisTypeDateTime: m_chart->setAxisY(new QDateTimeAxis(this), series); break; #endif default: // Do nothing, assume AxisTypeNoAxis break; } } //qDebug() << "axis for series" << series << "x:" << m_chart->axisX(series) << "y:" << m_chart->axisY(series); } #include "moc_declarativechart.cpp" QTCOMMERCIALCHART_END_NAMESPACE