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#ifndef QLEGEND_H
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#define QLEGEND_H
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#include <qchartglobal.h>
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#include <qseries.h>
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#include <QGraphicsObject>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class Domain;
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class LegendMarker;
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class QPieSlice;
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class QXYSeries;
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class QBarSet;
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class QBarSeries;
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class QPieSeries;
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class LegendScrollButton;
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class QTCOMMERCIALCHART_EXPORT QLegend : public QGraphicsObject
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{
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Q_OBJECT
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public:
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enum PreferredLayout {
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PreferredLayoutTop,
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PreferredLayoutBottom,
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PreferredLayoutLeft,
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PreferredLayoutRight,
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};
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explicit QLegend(QGraphicsItem *parent = 0);
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
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QRectF boundingRect() const;
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void setBrush(const QBrush& brush);
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QBrush brush() const;
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void setPen(const QPen& pen);
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QPen pen() const;
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void setPreferredLayout(QLegend::PreferredLayout preferred);
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QLegend::PreferredLayout preferredLayout() const;
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QSizeF maximumSize() const;
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void setMaximumSize(const QSizeF size);
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void setSize(const QSizeF size);
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void setPos(const QPointF &pos);
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signals:
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// for interactions.
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void clicked(QSeries* series, Qt::MouseButton button);
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void clicked(QBarSet* barset, Qt::MouseButton button);
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void clicked(QPieSlice* slice, Qt::MouseButton button);
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public slots:
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void handleSeriesAdded(QSeries* series,Domain* domain);
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void handleSeriesRemoved(QSeries* series);
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void handleAdded(QList<QPieSlice*> slices);
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void handleRemoved(QList<QPieSlice*> slices);
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void handleMarkerDestroyed();
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void handleScrollButtonClicked(QGraphicsSceneMouseEvent* event);
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private:
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// PIMPL --->
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void connectSeries(QSeries* series);
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void disconnectSeries(QSeries* series);
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void createMarkers(QSeries* series);
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void appendMarkers(QXYSeries* series); // All line series are derived from QXYSeries, so this works for now
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void appendMarkers(QBarSeries* series);
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void appendMarkers(QPieSeries* series);
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void deleteMarkers(QSeries* series);
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// void layoutChanged(); // This tries to fit all items to legend
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void updateLayout(); // New version of layout. Fits items only to row or column and adds scrollbars.
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void rescaleScrollButtons(const QSize& size);
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QSizeF maximumMarkerSize();
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void checkMarkerBounds();
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bool scrollButtonsVisible();
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// void updateScrollButtonsLayout();
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QPointF mPos;
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QSizeF mSize;
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QSizeF mMinimumSize;
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QSizeF mMaximumSize;
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QList<LegendMarker*> mMarkers;
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QBrush m_brush;
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QPen m_pen;
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QLegend::PreferredLayout mPreferredLayout;
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int mFirstMarker;
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LegendScrollButton* mScrollButtonLeft;
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LegendScrollButton* mScrollButtonRight;
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LegendScrollButton* mScrollButtonUp;
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LegendScrollButton* mScrollButtonDown;
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qreal mMargin;
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// <--- PIMPL
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // QLEGEND_H
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