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diff --git a/src/curveeditor/detail/curveitem.h b/src/curveeditor/detail/curveitem.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Design Tooling
+**
+** 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 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "curveeditorstyle.h"
+
+#include <QGraphicsObject>
+
+namespace DesignTools {
+
+class AnimationCurve;
+class KeyframeItem;
+
+class CurveItem : public QGraphicsObject
+{
+    Q_OBJECT
+
+public:
+    CurveItem(QGraphicsItem *parent = nullptr);
+
+    CurveItem(unsigned int id, const AnimationCurve &curve, QGraphicsItem *parent = nullptr);
+
+    ~CurveItem() override;
+
+    enum { Type = UserType + 1 };
+
+    int type() const override;
+
+    QRectF boundingRect() const override;
+
+    bool contains(const QPointF &point) const override;
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
+
+    bool isDirty() const;
+
+    unsigned int id() const;
+
+    AnimationCurve curve() const;
+
+    void setDirty(bool dirty);
+
+    QRectF setComponentTransform(const QTransform &transform);
+
+    void setStyle(const CurveEditorStyle &style);
+
+    void setSelected(bool select);
+
+    void setPreSelected(bool preSelect);
+
+private:
+    QPainterPath path() const;
+
+private:
+    unsigned int m_id;
+
+    CurveItemStyleOption m_style;
+
+    QTransform m_transform;
+
+    std::vector<KeyframeItem *> m_keyframes;
+
+    bool m_selected;
+
+    bool m_preselected;
+
+    bool m_itemDirty;
+
+    mutable bool m_pathDirty;
+
+    mutable QPainterPath m_path;
+};
+
+} // End namespace DesignTools.