|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#ifndef PIECHARTITEM_H
|
|
|
#define PIECHARTITEM_H
|
|
|
|
|
|
#include "qpieseries.h"
|
|
|
#include "chartitem_p.h"
|
|
|
#include "piesliceitem_p.h"
|
|
|
|
|
|
class QGraphicsItem;
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
class QPieSlice;
|
|
|
class ChartPresenter;
|
|
|
|
|
|
typedef QHash<PieSliceItem*, PieSliceData> PieLayout;
|
|
|
|
|
|
class PieChartItem : public ChartItem
|
|
|
{
|
|
|
Q_OBJECT
|
|
|
|
|
|
public:
|
|
|
// TODO: use a generic data class instead of x and y
|
|
|
PieChartItem(QPieSeries *series, ChartPresenter *presenter);
|
|
|
~PieChartItem();
|
|
|
|
|
|
public: // from QGraphicsItem
|
|
|
QRectF boundingRect() const { return m_rect; }
|
|
|
void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
|
|
|
|
|
|
public Q_SLOTS:
|
|
|
void initialize();
|
|
|
void handleSlicesAdded(QList<QPieSlice*> slices);
|
|
|
void handleSlicesRemoved(QList<QPieSlice*> slices);
|
|
|
void handlePieLayoutChanged();
|
|
|
void handleSliceChanged();
|
|
|
void handleDomainChanged(qreal, qreal, qreal, qreal);
|
|
|
void handleGeometryChanged(const QRectF& rect);
|
|
|
|
|
|
public:
|
|
|
void calculatePieLayout();
|
|
|
PieSliceData sliceData(QPieSlice *slice);
|
|
|
PieLayout calculateLayout();
|
|
|
void applyLayout(const PieLayout &layout);
|
|
|
void updateLayout(PieSliceItem *sliceItem, const PieSliceData &sliceData);
|
|
|
void setLayout(const PieLayout &layout);
|
|
|
void setLayout(PieSliceItem *sliceItem, const PieSliceData &sliceData);
|
|
|
|
|
|
private:
|
|
|
friend class PieSliceItem;
|
|
|
QHash<QPieSlice*, PieSliceItem*> m_slices;
|
|
|
QPieSeries *m_series;
|
|
|
QRectF m_rect;
|
|
|
QPointF m_pieCenter;
|
|
|
qreal m_pieRadius;
|
|
|
};
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
|
|
#endif // PIECHARTITEM_H
|
|
|
|
