| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt 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 <QtCharts/QChartGlobal> |
| #include <private/charttheme_p.h> |
| #include <QtCharts/QPieSeries> |
| #include <private/pieslicedata_p.h> |
| #include <QtCharts/private/qchartglobal_p.h> |
| #include <QtWidgets/QGraphicsItem> |
| #include <QtCore/QRectF> |
| #include <QtGui/QColor> |
| #include <QtGui/QPen> |
| |
| #define PIESLICE_LABEL_GAP 5 |
| |
| QT_CHARTS_BEGIN_NAMESPACE |
| class PieChartItem; |
| class PieSliceLabel; |
| class QPieSlice; |
| |
| class Q_CHARTS_PRIVATE_EXPORT 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 mouseReleaseEvent(QGraphicsSceneMouseEvent *event); |
| void mouseDoubleClickEvent(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); |
| void pressed(Qt::MouseButtons buttons); |
| void released(Qt::MouseButtons buttons); |
| void doubleClicked(Qt::MouseButtons buttons); |
| |
| 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; |
| |
| bool m_mousePressed; |
| |
| friend class PieSliceAnimation; |
| }; |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #endif // PIESLICEITEM_H |