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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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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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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 QVector<QRectF> BarLayout;
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class BarChartItem : 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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virtual QVector<QRectF> calculateLayout();
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void applyLayout(const QVector<QRectF> &layout);
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void setLayout(const QVector<QRectF> &layout);
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void updateLayout(const QVector<QRectF> &layout);
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QRectF geometry() const { return m_rect;}
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public Q_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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qreal m_domainMinX;
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qreal m_domainMaxX;
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qreal m_domainMinY;
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qreal m_domainMaxY;
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QRectF m_rect;
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bool m_layoutSet; // True, if component has been laid out.
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QVector<QRectF> m_layout;
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// Not owned.
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QBarSeries *m_series;
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QList<Bar *> m_bars;
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QList<BarValue *> m_values;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // BARCHARTITEM_H
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