|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2013 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 Enterprise Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Enterprise licenses may use this file in
|
|
|
** accordance with the Qt Enterprise 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
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
// W A R N I N G
|
|
|
// -------------
|
|
|
//
|
|
|
// This file is not part of the Qt Enterprise Chart API. It exists purely as an
|
|
|
// implementation detail. This header file may change from version to
|
|
|
// version without notice, or even be removed.
|
|
|
//
|
|
|
// We mean it.
|
|
|
|
|
|
#ifndef PIESLICEITEM_H
|
|
|
#define PIESLICEITEM_H
|
|
|
|
|
|
#include "qchartglobal.h"
|
|
|
#include "charttheme_p.h"
|
|
|
#include "qpieseries.h"
|
|
|
#include "pieslicedata_p.h"
|
|
|
#include <QGraphicsItem>
|
|
|
#include <QRectF>
|
|
|
#include <QColor>
|
|
|
#include <QPen>
|
|
|
|
|
|
#define PIESLICE_LABEL_GAP 5
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
class PieChartItem;
|
|
|
class PieSliceLabel;
|
|
|
class QPieSlice;
|
|
|
|
|
|
class PieSliceItem : public QGraphicsObject
|
|
|
{
|
|
|
Q_OBJECT
|
|
|
|
|
|
public:
|
|
|
PieSliceItem(QGraphicsItem *parent = 0);
|
|
|
~PieSliceItem();
|
|
|
|
|
|
// from QGraphicsItem
|
|
|
QRectF boundingRect() const;
|
|
|
QPainterPath shape() const;
|
|
|
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
|
|
|
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
|
|
|
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
|
|
|
void mousePressEvent(QGraphicsSceneMouseEvent *event);
|
|
|
|
|
|
void setLayout(const PieSliceData &sliceData);
|
|
|
static QPointF sliceCenter(QPointF point, qreal radius, QPieSlice *slice);
|
|
|
|
|
|
Q_SIGNALS:
|
|
|
void clicked(Qt::MouseButtons buttons);
|
|
|
void hovered(bool state);
|
|
|
|
|
|
private:
|
|
|
void updateGeometry();
|
|
|
QPainterPath slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal *centerAngle, QPointF *armStart);
|
|
|
QPainterPath labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF *textStart);
|
|
|
|
|
|
private:
|
|
|
PieSliceData m_data;
|
|
|
QRectF m_boundingRect;
|
|
|
QPainterPath m_slicePath;
|
|
|
QPainterPath m_labelArmPath;
|
|
|
QRectF m_labelTextRect;
|
|
|
bool m_hovered;
|
|
|
|
|
|
friend class PieSliceAnimation;
|
|
|
};
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
|
|
#endif // PIESLICEITEM_H
|
|
|
|
