| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | // W A R N I N G |
| 5 | // ------------- |
| 6 | // |
| 7 | // This file is not part of the Qt Chart API. It exists purely as an |
| 8 | // implementation detail. This header file may change from version to |
| 9 | // version without notice, or even be removed. |
| 10 | // |
| 11 | // We mean it. |
| 12 | |
| 13 | #ifndef PIECHARTITEM_H |
| 14 | #define PIECHARTITEM_H |
| 15 | |
| 16 | #include <QtCharts/QPieSeries> |
| 17 | #include <private/chartitem_p.h> |
| 18 | #include <private/piesliceitem_p.h> |
| 19 | #include <QtCore/QPointer> |
| 20 | #include <QtCharts/private/qchartglobal_p.h> |
| 21 | |
| 22 | QT_BEGIN_NAMESPACE |
| 23 | class QGraphicsItem; |
| 24 | QT_END_NAMESPACE |
| 25 | |
| 26 | QT_BEGIN_NAMESPACE |
| 27 | class QPieSlice; |
| 28 | class ChartPresenter; |
| 29 | class PieAnimation; |
| 30 | |
| 31 | class Q_CHARTS_EXPORT PieChartItem : public ChartItem |
| 32 | { |
| 33 | Q_OBJECT |
| 34 | |
| 35 | public: |
| 36 | explicit PieChartItem(QPieSeries *series, QGraphicsItem* item = 0); |
| 37 | ~PieChartItem(); |
| 38 | |
| 39 | // from QGraphicsItem |
| 40 | QRectF boundingRect() const override { return m_rect; } |
| 41 | void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) override {} |
| 42 | |
| 43 | protected: |
| 44 | void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override; |
| 45 | void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override; |
| 46 | void mousePressEvent(QGraphicsSceneMouseEvent *event) override; |
| 47 | void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override; |
| 48 | void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override; |
| 49 | |
| 50 | public Q_SLOTS: |
| 51 | // from Chart |
| 52 | void handleDomainUpdated() override; |
| 53 | |
| 54 | void updateLayout(); |
| 55 | void handleSlicesAdded(const QList<QPieSlice *> &slices); |
| 56 | void handleSlicesRemoved(const QList<QPieSlice *> &slices); |
| 57 | void handleSliceChanged(); |
| 58 | void handleSeriesVisibleChanged(); |
| 59 | void handleOpacityChanged(); |
| 60 | |
| 61 | void setAnimation(PieAnimation *animation); |
| 62 | ChartAnimation *animation() const override; |
| 63 | |
| 64 | // From ChartItem |
| 65 | void cleanup() override; |
| 66 | private: |
| 67 | PieSliceData updateSliceGeometry(QPieSlice *slice); |
| 68 | |
| 69 | private: |
| 70 | QHash<QPieSlice *, PieSliceItem *> m_sliceItems; |
| 71 | QPointer<QPieSeries> m_series; |
| 72 | QRectF m_rect; |
| 73 | QPointF m_pieCenter; |
| 74 | qreal m_pieRadius; |
| 75 | qreal m_holeSize; |
| 76 | PieAnimation *m_animation; |
| 77 | |
| 78 | }; |
| 79 | |
| 80 | QT_END_NAMESPACE |
| 81 | |
| 82 | #endif // PIECHARTITEM_H |
| 83 |