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#include "qchart.h"
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#include "qchartseries.h"
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#include "qscatterseries.h"
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#include "qscatterseries_p.h"
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#include "qpieseries.h"
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#include "qxychartseries.h"
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#include "barchartseries.h"
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#include "bargroup.h"
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#include "xylinechartitem_p.h"
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#include "plotdomain_p.h"
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#include "axisitem_p.h"
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#include <QGraphicsScene>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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QChart::QChart(QGraphicsObject* parent) : QGraphicsObject(parent),
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m_background(new QGraphicsRectItem(this)),
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m_title(new QGraphicsTextItem(this)),
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m_axisX(new AxisItem(AxisItem::X_AXIS,this)),
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m_axisY(new AxisItem(AxisItem::Y_AXIS,this)),
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m_plotDataIndex(0),
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m_marginSize(0)
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{
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// TODO: the default theme?
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setTheme(QChart::ChartThemeVanilla);
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// setFlags(QGraphicsItem::ItemClipsChildrenToShape);
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PlotDomain domain;
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m_plotDomainList<<domain;
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m_chartItems<<m_axisX;
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m_chartItems<<m_axisY;
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}
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QChart::~QChart(){}
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QRectF QChart::boundingRect() const
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{
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return m_rect;
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}
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void QChart::addSeries(QChartSeries* series)
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{
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// TODO: we should check the series not already added
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m_chartSeries << series;
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switch(series->type())
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{
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case QChartSeries::SeriesTypeLine: {
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QXYChartSeries* xyseries = static_cast<QXYChartSeries*>(series);
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// Use color defined by theme in case the series does not define a custom color
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if (!xyseries->color().isValid() && m_themeColors.count())
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xyseries->setColor(nextColor());
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m_plotDataIndex = 0 ;
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m_plotDomainList.resize(1);
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PlotDomain& domain = m_plotDomainList[m_plotDataIndex];
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for (int i = 0 ; i < xyseries->count() ; i++)
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{
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qreal x = xyseries->x(i);
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qreal y = xyseries->y(i);
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domain.m_minX = qMin(domain.m_minX,x);
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domain.m_minY = qMin(domain.m_minY,y);
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domain.m_maxX = qMax(domain.m_maxX,x);
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domain.m_maxY = qMax(domain.m_maxY,y);
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}
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XYLineChartItem* item = new XYLineChartItem(xyseries,this);
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m_chartItems<<item;
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foreach(ChartItem* i ,m_chartItems)
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i->setPlotDomain(m_plotDomainList.at(m_plotDataIndex));
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break;
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}
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case QChartSeries::SeriesTypeBar: {
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qDebug() << "barSeries added";
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BarChartSeries* barSeries = static_cast<BarChartSeries*>(series);
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BarGroup* barGroup = new BarGroup(*barSeries,this);
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// Add some fugly colors for 5 fist series...
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barGroup->addColor(QColor(255,0,0,128));
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barGroup->addColor(QColor(255,255,0,128));
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barGroup->addColor(QColor(0,255,0,128));
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barGroup->addColor(QColor(0,0,255,128));
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barGroup->addColor(QColor(255,128,0,128));
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m_chartItems<<barGroup;
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childItems().append(barGroup);
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break;
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}
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case QChartSeries::SeriesTypeScatter: {
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QScatterSeries *scatterSeries = qobject_cast<QScatterSeries *>(series);
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scatterSeries->d->setParentItem(this);
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// Set pre-defined colors in case the series has no colors defined
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if (!scatterSeries->markerColor().isValid())
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scatterSeries->setMarkerColor(nextColor());
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connect(this, SIGNAL(sizeChanged(QRectF)),
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scatterSeries, SLOT(chartSizeChanged(QRectF)));
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// QColor nextColor = m_themeColors.takeFirst();
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// nextColor.setAlpha(150); // TODO: default opacity?
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// scatterSeries->setMarkerColor(nextColor);
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break;
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}
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case QChartSeries::SeriesTypePie: {
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QPieSeries *pieSeries = qobject_cast<QPieSeries *>(series);
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for (int i(0); i < pieSeries->sliceCount(); i++) {
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if (!pieSeries->sliceColor(i).isValid())
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pieSeries->setSliceColor(i, nextColor());
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}
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connect(this, SIGNAL(sizeChanged(QRectF)),
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pieSeries, SLOT(chartSizeChanged(QRectF)));
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// Set pre-defined colors in case the series has no colors defined
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// TODO: how to define the color for all the slices of a pie?
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// for (int (i); i < pieSeries.sliceCount(); i++)
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break;
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}
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}
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}
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QChartSeries* QChart::createSeries(QChartSeries::QChartSeriesType type)
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{
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// TODO: support also other types; not only scatter and pie
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QChartSeries *series(0);
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switch (type) {
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case QChartSeries::SeriesTypeLine: {
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series = QXYChartSeries::create();
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break;
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}
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case QChartSeries::SeriesTypeBar: {
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series = new BarChartSeries(this);
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break;
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}
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case QChartSeries::SeriesTypeScatter: {
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series = new QScatterSeries(this);
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break;
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}
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case QChartSeries::SeriesTypePie: {
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series = new QPieSeries(this);
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break;
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}
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default:
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Q_ASSERT(false);
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break;
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}
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addSeries(series);
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return series;
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}
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void QChart::setSize(const QSize& size)
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{
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m_rect = QRect(QPoint(0,0),size);
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QRect rect = m_rect.adjusted(margin(),margin(), -margin(), -margin());
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//recalculate background gradient
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m_background->setRect(rect);
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m_backgroundGradient.setFinalStop(0,m_background->rect().height());
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m_background->setBrush(m_backgroundGradient);
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//resize elements
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foreach (ChartItem* item ,m_chartItems) {
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item->setPos(rect.topLeft());
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item->setSize(rect.size());
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}
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// TODO: TTD for setting scale
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//emit scaleChanged(100, 100);
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// TODO: calculate the origo
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// TODO: not sure if emitting a signal here is the best from performance point of view
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emit sizeChanged(QRectF(0, 0, size.width(), size.height()));
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update();
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}
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void QChart::setBackgroundColor(const QColor& color)
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{
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m_backgroundGradient.setColorAt( 0.0, Qt::white);
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m_backgroundGradient.setColorAt( 1.0, color);
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m_background->setBrush(m_backgroundGradient);
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m_background->setPen(Qt::NoPen);
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m_background->update();
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}
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void QChart::setTitle(const QString& title)
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{
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m_title->setPlainText(title);
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}
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int QChart::margin() const
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{
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return m_marginSize;
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}
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void QChart::setMargin(int margin)
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{
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m_marginSize = margin;
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}
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void QChart::setTheme(QChart::ChartThemeId theme)
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{
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// if (theme != m_currentTheme) {
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m_themeColors.clear();
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// TODO: define color themes
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switch (theme) {
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case QChart::ChartThemeDefault:
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// TODO: define the default theme based on the OS
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// For now we just fallthrough to "vanilla"
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case QChart::ChartThemeVanilla:
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m_themeColors.append(QColor(217, 197, 116));
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m_themeColors.append(QColor(214, 168, 150));
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m_themeColors.append(QColor(160, 160, 113));
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m_themeColors.append(QColor(210, 210, 52));
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m_themeColors.append(QColor(136, 114, 58));
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m_backgroundGradient.setColorAt(0.0, QColor(QRgb(0xff9d844d)));
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m_backgroundGradient.setColorAt(1.0, QColor(QRgb(0xffafafaf)));
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break;
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case QChart::ChartThemeIcy:
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m_themeColors.append(QColor(0, 3, 165));
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m_themeColors.append(QColor(49, 52, 123));
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m_themeColors.append(QColor(71, 114, 187));
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m_themeColors.append(QColor(48, 97, 87));
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m_themeColors.append(QColor(19, 71, 90));
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m_themeColors.append(QColor(110, 70, 228));
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m_backgroundGradient.setColorAt(0.0, QColor(QRgb(0xffe4ffff)));
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m_backgroundGradient.setColorAt(1.0, QColor(QRgb(0xffe4ffff)));
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break;
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case QChart::ChartThemeGrayscale:
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m_themeColors.append(QColor(0, 0, 0));
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m_themeColors.append(QColor(50, 50, 50));
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m_themeColors.append(QColor(100, 100, 100));
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m_themeColors.append(QColor(140, 140, 140));
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m_themeColors.append(QColor(180, 180, 180));
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m_backgroundGradient.setColorAt(0.0, QColor(QRgb(0xffffffff)));
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m_backgroundGradient.setColorAt(1.0, QColor(QRgb(0xffafafaf)));
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break;
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case QChart::ChartThemeUnnamed1:
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m_themeColors.append(QColor(QRgb(0xff3fa9f5)));
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m_themeColors.append(QColor(QRgb(0xff7AC943)));
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m_themeColors.append(QColor(QRgb(0xffFF931E)));
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m_themeColors.append(QColor(QRgb(0xffFF1D25)));
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m_themeColors.append(QColor(QRgb(0xffFF7BAC)));
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m_backgroundGradient.setColorAt(0.0, QColor(QRgb(0xfff3dc9e)));
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m_backgroundGradient.setColorAt(1.0, QColor(QRgb(0xffafafaf)));
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break;
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default:
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Q_ASSERT(false);
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break;
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}
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m_background->setBrush(m_backgroundGradient);
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m_background->setPen(Qt::NoPen);
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foreach(QChartSeries* series, m_chartSeries) {
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// TODO: other series interested on themes?
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if (series->type() == QChartSeries::SeriesTypeLine) {
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QXYChartSeries *lineseries = reinterpret_cast<QXYChartSeries *>(series);
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lineseries->setColor(nextColor());
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} else if (series->type() == QChartSeries::SeriesTypeScatter) {
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QScatterSeries *scatter = qobject_cast<QScatterSeries *>(series);
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scatter->setMarkerColor(nextColor());
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} else if (series->type() == QChartSeries::SeriesTypePie) {
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QPieSeries *pieSeries = qobject_cast<QPieSeries *>(series);
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for (int i(0); i < pieSeries->sliceCount(); i++)
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pieSeries->setSliceColor(i, nextColor());
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}
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}
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update();
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}
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QColor QChart::nextColor()
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{
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QColor nextColor = m_themeColors.first();
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m_themeColors.move(0, m_themeColors.size() - 1);
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return nextColor;
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}
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void QChart::zoomInToRect(const QRect& rectangle)
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{
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if(!rectangle.isValid()) return;
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qreal margin = this->margin();
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QRect rect = rectangle.normalized();
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rect.translate(-margin, -margin);
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PlotDomain& oldDomain = m_plotDomainList[m_plotDataIndex];
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PlotDomain domain = oldDomain.subDomain(rect,m_rect.width() - 2 * margin,m_rect.height() - 2 * margin);
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m_plotDomainList.resize(m_plotDataIndex + 1);
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m_plotDomainList<<domain;
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m_plotDataIndex++;
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foreach (ChartItem* item ,m_chartItems)
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item->setPlotDomain(m_plotDomainList[m_plotDataIndex]);
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update();
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}
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void QChart::zoomIn()
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{
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if (m_plotDataIndex < m_plotDomainList.count() - 1) {
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m_plotDataIndex++;
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foreach (ChartItem* item ,m_chartItems)
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item->setPlotDomain(m_plotDomainList[m_plotDataIndex]);
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update();
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}else{
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QRect rect = m_rect.adjusted(margin(),margin(), -margin(), -margin());
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rect.setWidth(rect.width()/2);
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rect.setHeight(rect.height()/2);
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rect.moveCenter(m_rect.center());
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zoomInToRect(rect);
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}
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}
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void QChart::zoomOut()
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{
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if (m_plotDataIndex > 0) {
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m_plotDataIndex--;
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foreach (ChartItem* item ,m_chartItems)
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item->setPlotDomain(m_plotDomainList[m_plotDataIndex]);
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update();
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}
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}
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#include "moc_qchart.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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