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#ifndef QBARCHART_H
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#define QBARCHART_H
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#include "chartitem_p.h"
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#include "bar.h"
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#include "barchartseries.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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// TODO: Better name for this? The function of this class is to know where each bar in series is laid out.
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//class BarGroup : public QGraphicsItemGroup
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class BarGroup : public ChartItem
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{
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/* // TODO: implement as singleton?
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private:
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static BarGroup* mBarGroupInstance;
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public:
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static BarGroup* instance()
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{
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if (mBarGroupInstance == NULL) {
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mBarGroupInstance = new BarGroup();
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}
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return mBarGroupInstance;
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}
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private:
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*/
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public:
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explicit BarGroup(BarChartSeries& series, ChartItem *parent = 0);
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// Layout "api"
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void resize( int w, int h ); // Size for whole series. Single bars are drawn inside this area
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void setPos(qreal x, qreal y);
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void setBarWidth( int w ); // Default width for each bar
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void setColor( QColor color ); // Default color for each bar
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// From QGraphicsItem
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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QRectF boundingRect() const;
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private:
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void dataChanged(); // data of series has changed -> need to recalculate bar sizes
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void layoutChanged(); // layout has changed -> need to recalculate bar sizes
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private:
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// Data
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BarChartSeries& mSeries;
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int mMin; // Min and max values of data. (updated when data is changed, used when drawing)
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int mMax;
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int mHeight; // Layout spesific
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int mWidth;
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int mBarDefaultWidth;
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QColor mColor;
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bool mLayoutSet; // True, if component has been laid out.
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bool mLayoutDirty;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // QBARCHART_H
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