| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Quick Layouts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
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| ** GNU Lesser General Public License Usage |
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| ** General Public License version 3 as published by the Free Software |
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| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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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) |
| |
| public: |
| explicit QQuickStackLayout(QQuickItem *parent = 0); |
| int count() const; |
| int currentIndex() const; |
| void setCurrentIndex(int index); |
| |
| void componentComplete() 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 |