| 1 | // Copyright (C) 2022 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef FPSHELPER_H |
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| 5 | #define FPSHELPER_H |
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| 6 | |
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| 7 | #include <QQuickItem> |
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| 8 | #include <QElapsedTimer> |
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| 9 | |
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| 10 | class FpsHelper : public QQuickItem |
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| 11 | { |
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| 12 | Q_OBJECT |
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| 13 | Q_PROPERTY(float fps READ fps NOTIFY fpsChanged) |
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| 14 | |
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| 15 | public: |
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| 16 | FpsHelper(); |
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| 17 | |
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| 18 | float fps() const; |
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| 19 | |
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| 20 | protected: |
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| 21 | QSGNode *updatePaintNode(QSGNode *node, UpdatePaintNodeData *) override; |
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| 22 | |
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| 23 | signals: |
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| 24 | void fpsChanged(); |
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| 25 | |
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| 26 | private: |
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| 27 | float m_fps = 0.0f; |
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| 28 | int m_frames = 0; |
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| 29 | QElapsedTimer m_timer; |
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| 30 | }; |
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| 31 | |
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| 32 | #endif // FPSHELPER_H |
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| 33 | |
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