| 1 | /**************************************************************************** |
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| 2 | ** |
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| 3 | ** Copyright (C) 2016 The Qt Company Ltd. |
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| 4 | ** Contact: https://www.qt.io/licensing/ |
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| 5 | ** |
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| 6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
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| 7 | ** |
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| 8 | ** $QT_BEGIN_LICENSE:GPL$ |
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| 9 | ** Commercial License Usage |
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| 10 | ** Licensees holding valid commercial Qt licenses may use this file in |
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| 11 | ** accordance with the commercial license agreement provided with the |
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| 12 | ** Software or, alternatively, in accordance with the terms contained in |
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| 13 | ** a written agreement between you and The Qt Company. For licensing terms |
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| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
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| 15 | ** information use the contact form at https://www.qt.io/contact-us. |
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| 16 | ** |
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| 17 | ** GNU General Public License Usage |
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| 18 | ** Alternatively, this file may be used under the terms of the GNU |
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| 19 | ** General Public License version 3 or (at your option) any later version |
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| 20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
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| 21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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| 22 | ** included in the packaging of this file. Please review the following |
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| 23 | ** information to ensure the GNU General Public License requirements will |
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| 24 | ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
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| 25 | ** |
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| 26 | ** $QT_END_LICENSE$ |
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| 27 | ** |
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| 28 | ****************************************************************************/ |
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| 29 | |
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| 30 | #ifndef XYSERIESIODEVICE_H |
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| 31 | #define XYSERIESIODEVICE_H |
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| 32 | |
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| 33 | #include <QtCore/QIODevice> |
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| 34 | #include <QtCore/QPointF> |
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| 35 | #include <QtCore/QVector> |
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| 36 | #include <QtCharts/QChartGlobal> |
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| 37 | |
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| 38 | QT_CHARTS_BEGIN_NAMESPACE |
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| 39 | class QXYSeries; |
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| 40 | QT_CHARTS_END_NAMESPACE |
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| 41 | |
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| 42 | QT_CHARTS_USE_NAMESPACE |
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| 43 | |
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| 44 | class XYSeriesIODevice : public QIODevice |
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| 45 | { |
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| 46 | Q_OBJECT |
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| 47 | public: |
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| 48 | explicit XYSeriesIODevice(QXYSeries *series, QObject *parent = nullptr); |
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| 49 | |
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| 50 | static const int sampleCount = 2000; |
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| 51 | |
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| 52 | protected: |
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| 53 | qint64 readData(char *data, qint64 maxSize) override; |
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| 54 | qint64 writeData(const char *data, qint64 maxSize) override; |
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| 55 | |
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| 56 | private: |
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| 57 | QXYSeries *m_series; |
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| 58 | QVector<QPointF> m_buffer; |
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| 59 | }; |
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| 60 | |
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| 61 | #endif // XYSERIESIODEVICE_H |
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| 62 | |
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