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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Layouts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
#ifndef QQUICKSTACKLAYOUT_H
#define QQUICKSTACKLAYOUT_H
#include <qquicklayout_p.h>
QT_BEGIN_NAMESPACE
class QQuickStackLayoutPrivate;
class QQuickStackLayout : public QQuickLayout
{
Q_OBJECT
Q_PROPERTY(int count READ count NOTIFY countChanged)
Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
QML_NAMED_ELEMENT(StackLayout)
QML_ADDED_IN_MINOR_VERSION(3)
public:
explicit QQuickStackLayout(QQuickItem *parent = 0);
int count() const;
int currentIndex() const;
void setCurrentIndex(int index);
void componentComplete() override;
void itemChange(ItemChange change, const ItemChangeData &value) override;
QSizeF sizeHint(Qt::SizeHint whichSizeHint) const override;
void setAlignment(QQuickItem *item, Qt::Alignment align) override;
void invalidate(QQuickItem *childItem = 0) override;
void updateLayoutItems() override;
void rearrange(const QSizeF &) override;
// iterator
Q_INVOKABLE QQuickItem *itemAt(int index) const override;
int itemCount() const override;
int indexOf(QQuickItem *item) const;
signals:
void currentIndexChanged();
void countChanged();
public slots:
private:
static void collectItemSizeHints(QQuickItem *item, QSizeF *sizeHints);
bool shouldIgnoreItem(QQuickItem *item) const;
Q_DECLARE_PRIVATE(QQuickStackLayout)
QList<QQuickItem*> m_items;
typedef struct {
inline QSizeF &min() { return array[Qt::MinimumSize]; }
inline QSizeF &pref() { return array[Qt::PreferredSize]; }
inline QSizeF &max() { return array[Qt::MaximumSize]; }
QSizeF array[Qt::NSizeHints];
} SizeHints;
mutable QVector<SizeHints> m_cachedItemSizeHints;
mutable QSizeF m_cachedSizeHints[Qt::NSizeHints];
};
class QQuickStackLayoutPrivate : public QQuickLayoutPrivate
{
Q_DECLARE_PUBLIC(QQuickStackLayout)
public:
QQuickStackLayoutPrivate() : count(0), currentIndex(-1), explicitCurrentIndex(false) {}
private:
int count;
int currentIndex;
bool explicitCurrentIndex;
};
QT_END_NAMESPACE
#endif // QQUICKSTACKLAYOUT_H
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