67 lines
1.4 KiB
C++
67 lines
1.4 KiB
C++
// Copyright (C) 2020 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef CUSTOMITEM_H
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#define CUSTOMITEM_H
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//! [1]
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#include <QQuickItem>
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class CustomItem : public QQuickItem
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{
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Q_OBJECT
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//! [2]
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Q_PROPERTY(qreal zoom READ zoom WRITE setZoom NOTIFY zoomChanged)
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Q_PROPERTY(int iterationLimit READ iterationLimit WRITE setIterationLimit NOTIFY iterationLimitChanged)
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Q_PROPERTY(QPointF center READ center WRITE setCenter NOTIFY centerChanged)
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//! [2]
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QML_ELEMENT
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public:
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explicit CustomItem(QQuickItem *parent = nullptr);
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qreal zoom() const
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{
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return m_zoom;
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}
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int iterationLimit() const
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{
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return m_limit;
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}
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QPointF center() const
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{
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return m_center;
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}
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public slots:
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void setZoom(qreal zoom);
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void setIterationLimit(int iterationLimit);
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void setCenter(QPointF center);
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signals:
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void zoomChanged(qreal zoom);
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void iterationLimitChanged(int iterationLimit);
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void centerChanged(QPointF center);
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protected:
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QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override;
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void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
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private:
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bool m_geometryChanged = true;
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qreal m_zoom;
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bool m_zoomChanged = true;
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int m_limit;
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bool m_limitChanged = true;
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QPointF m_center;
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bool m_centerChanged = true;
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};
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//! [1]
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#endif // CUSTOMITEM_H
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