| 1 | /**************************************************************************** |
|---|---|
| 2 | ** |
| 3 | ** Copyright (C) 2016 The Qt Company Ltd. |
| 4 | ** Contact: https://www.qt.io/licensing/ |
| 5 | ** |
| 6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
| 7 | ** |
| 8 | ** $QT_BEGIN_LICENSE:GPL$ |
| 9 | ** Commercial License Usage |
| 10 | ** Licensees holding valid commercial Qt licenses may use this file in |
| 11 | ** accordance with the commercial license agreement provided with the |
| 12 | ** Software or, alternatively, in accordance with the terms contained in |
| 13 | ** a written agreement between you and The Qt Company. For licensing terms |
| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
| 15 | ** information use the contact form at https://www.qt.io/contact-us. |
| 16 | ** |
| 17 | ** GNU General Public License Usage |
| 18 | ** Alternatively, this file may be used under the terms of the GNU |
| 19 | ** General Public License version 3 or (at your option) any later version |
| 20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| 21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| 22 | ** included in the packaging of this file. Please review the following |
| 23 | ** information to ensure the GNU General Public License requirements will |
| 24 | ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| 25 | ** |
| 26 | ** $QT_END_LICENSE$ |
| 27 | ** |
| 28 | ****************************************************************************/ |
| 29 | |
| 30 | #ifndef CALLOUT_H |
| 31 | #define CALLOUT_H |
| 32 | |
| 33 | #include <QtCharts/QChartGlobal> |
| 34 | #include <QtWidgets/QGraphicsItem> |
| 35 | #include <QtGui/QFont> |
| 36 | |
| 37 | QT_BEGIN_NAMESPACE |
| 38 | class QGraphicsSceneMouseEvent; |
| 39 | QT_END_NAMESPACE |
| 40 | |
| 41 | QT_CHARTS_BEGIN_NAMESPACE |
| 42 | class QChart; |
| 43 | QT_CHARTS_END_NAMESPACE |
| 44 | |
| 45 | QT_CHARTS_USE_NAMESPACE |
| 46 | |
| 47 | class Callout : public QGraphicsItem |
| 48 | { |
| 49 | public: |
| 50 | Callout(QChart *parent); |
| 51 | |
| 52 | void setText(const QString &text); |
| 53 | void setAnchor(QPointF point); |
| 54 | void updateGeometry(); |
| 55 | |
| 56 | QRectF boundingRect() const; |
| 57 | void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget); |
| 58 | |
| 59 | protected: |
| 60 | void mousePressEvent(QGraphicsSceneMouseEvent *event); |
| 61 | void mouseMoveEvent(QGraphicsSceneMouseEvent *event); |
| 62 | |
| 63 | private: |
| 64 | QString m_text; |
| 65 | QRectF m_textRect; |
| 66 | QRectF m_rect; |
| 67 | QPointF m_anchor; |
| 68 | QFont m_font; |
| 69 | QChart *m_chart; |
| 70 | }; |
| 71 | |
| 72 | #endif // CALLOUT_H |
| 73 |