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#ifndef BARCHARTITEM_H
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#define BARCHARTITEM_H
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#include "chartitem_p.h"
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#include "qbarseries.h"
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#include <QPen>
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#include <QBrush>
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#include <QGraphicsItem>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class Bar;
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class BarValue;
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class QChartAxisCategories;
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class QChart;
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typedef QHash<Bar*, QSizeF> BarLayout;
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class BarChartItem : public QObject, public ChartItem
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{
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Q_OBJECT
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public:
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BarChartItem(QBarSeries *series, ChartPresenter *presenter);
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virtual ~BarChartItem();
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// Common implemantation of different presenters. Not to be instantiated.
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// TODO: combine this with BarPresenter and derive other presenters from it?
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public:
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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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// TODO: Consider the domain for layoutChanged. May be use case, may not be. If it is, then the derived classes need to implement it
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virtual void dataChanged(); // data of series has changed -> need to recalculate bar sizes
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private slots:
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virtual void layoutChanged(); // layout has changed -> need to recalculate bar sizes
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public:
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BarLayout calculateLayout();
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void applyLayout(const BarLayout &layout);
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void setLayout(const BarLayout &layout);
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protected:
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void initAxisLabels();
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public slots:
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void handleModelChanged(int index);
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void handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY);
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void handleGeometryChanged(const QRectF& size);
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void handleLayoutChanged();
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// Internal slots
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void showToolTip(QPoint pos, QString tip); // shows tooltip (if enabled)
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protected:
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// TODO: consider these.
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int mHeight; // Layout spesific
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int mWidth;
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qreal mBarWidth;
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qreal mDomainMinX;
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qreal mDomainMaxX;
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qreal mDomainMinY;
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qreal mDomainMaxY;
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bool mLayoutSet; // True, if component has been laid out.
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// Not owned.
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QBarSeries* mSeries;
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QList<Bar*> mBars;
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QList<BarValue*> mFloatingValues;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // BARCHARTITEM_H
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