qquickflexboxlayoutengine_p.h

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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
 
#ifndef QQUICKFLEXBOXLAYOUTENGINE_H
#define QQUICKFLEXBOXLAYOUTENGINE_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtQuickLayouts/private/qquickflexboxlayoutitem_p.h>
 
QT_BEGIN_NAMESPACE
 
class QQuickFlexboxLayoutEngine
{
public:
    QQuickFlexboxLayoutEngine();
    ~QQuickFlexboxLayoutEngine();
 
    void setGeometries(const QSizeF &contentSize);
    QSizeF sizeHint(Qt::SizeHint whichSizeHint) const;
    void collectItemSizeHints(QQuickFlexboxLayoutItem *flexItem, QSizeF *sizeHints) const;
    void removeItemSizeHint(QQuickItem *item);
    void invalidateItemSizeHint(QQuickItem *item);
    bool isChildOverflowingParent(QQuickItem *item);
 
    void insertItem(QQuickFlexboxLayoutItem *item);
    int itemCount() const;
    QQuickItem *itemAt(int index) const;
    int indexOf(QQuickItem *item) const;
    QQuickFlexboxLayoutItem *findFlexboxLayoutItem(QQuickItem *item) const;
    void clearItems();
 
    void setFlexboxParentItem(QQuickFlexboxLayoutItem *parentItem);
    QQuickFlexboxLayoutItem *getFlexboxParentItem() { return m_flexboxParentItem; }
 
private:
    mutable QSizeF m_cachedSizeHints[Qt::NSizeHints];
    SizeHints &cachedItemSizeHints(int index) const;
 
    QList<QQuickFlexboxLayoutItem *> m_flexLayoutItems;
    QQuickFlexboxLayoutItem *m_flexboxParentItem;
    int m_visualDirection;
    QSizeF m_contentSize;
};
 
QT_END_NAMESPACE
 
#endif // QQUICKFLEXBOXLAYOUTENGINE_H