|
|
#ifndef PIESLICE_H
|
|
|
#define PIESLICE_H
|
|
|
|
|
|
#include "qchartglobal.h"
|
|
|
#include "charttheme_p.h"
|
|
|
#include "qpieseries.h"
|
|
|
#include <QGraphicsItem>
|
|
|
#include <QRectF>
|
|
|
#include <QColor>
|
|
|
#include <QPen>
|
|
|
|
|
|
#define PIESLICE_LABEL_GAP 5
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
class PieChartItem;
|
|
|
class PieSliceLabel;
|
|
|
class QPieSlice;
|
|
|
|
|
|
class PieSliceLayout
|
|
|
{
|
|
|
public:
|
|
|
QPointF m_center;
|
|
|
qreal m_radius;
|
|
|
qreal m_startAngle;
|
|
|
qreal m_angleSpan;
|
|
|
QPen m_pen;
|
|
|
QBrush m_brush;
|
|
|
};
|
|
|
|
|
|
class PieSlice : public QGraphicsObject
|
|
|
{
|
|
|
Q_OBJECT
|
|
|
|
|
|
public:
|
|
|
PieSlice(QGraphicsItem* parent = 0);
|
|
|
~PieSlice();
|
|
|
|
|
|
public: // 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);
|
|
|
|
|
|
Q_SIGNALS:
|
|
|
void clicked();
|
|
|
void hoverEnter();
|
|
|
void hoverLeave();
|
|
|
|
|
|
public:
|
|
|
void setLayout(PieSliceLayout layout);
|
|
|
void updateGeometry();
|
|
|
void updateData(const QPieSlice *sliceData);
|
|
|
static QPointF sliceCenter(QPointF point, qreal radius, QPieSlice *slice);
|
|
|
static QPainterPath slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal* centerAngle, QPointF* armStart);
|
|
|
static QPainterPath labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF* textStart);
|
|
|
static QRectF labelTextRect(QFont font, QString text);
|
|
|
|
|
|
private:
|
|
|
PieSliceLayout m_layout;
|
|
|
QRectF m_boundingRect;
|
|
|
|
|
|
QPainterPath m_slicePath;
|
|
|
bool m_isExploded;
|
|
|
qreal m_explodeDistanceFactor;
|
|
|
bool m_labelVisible;
|
|
|
|
|
|
QPainterPath m_labelArmPath;
|
|
|
qreal m_labelArmLengthFactor;
|
|
|
QPen m_labelArmPen;
|
|
|
|
|
|
QRectF m_labelTextRect;
|
|
|
QFont m_labelFont;
|
|
|
QString m_labelText;
|
|
|
};
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
|
|
#endif // PIESLICE_H
|
|
|
|
