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Diffstat (limited to 'src/charts/piechart/piesliceitem_p.h')
-rw-r--r-- | src/charts/piechart/piesliceitem_p.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/charts/piechart/piesliceitem_p.h b/src/charts/piechart/piesliceitem_p.h new file mode 100644 index 00000000..d6b7768c --- /dev/null +++ b/src/charts/piechart/piesliceitem_p.h @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2014 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 + +QT_CHARTS_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; + QGraphicsTextItem *m_labelItem; + + friend class PieSliceAnimation; +}; + +QT_CHARTS_END_NAMESPACE + +#endif // PIESLICEITEM_H |