qgraphicslinearlayout.h

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// Copyright (C) 2016 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
 
#ifndef QGRAPHICSLINEARLAYOUT_H
#define QGRAPHICSLINEARLAYOUT_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/qgraphicsitem.h>
#include <QtWidgets/qgraphicslayout.h>
 
QT_REQUIRE_CONFIG(graphicsview);
 
QT_BEGIN_NAMESPACE
 
class QGraphicsLinearLayoutPrivate;
 
class Q_WIDGETS_EXPORT QGraphicsLinearLayout : public QGraphicsLayout
{
public:
    QGraphicsLinearLayout(QGraphicsLayoutItem *parent = nullptr);
    QGraphicsLinearLayout(Qt::Orientation orientation, QGraphicsLayoutItem *parent = nullptr);
    virtual ~QGraphicsLinearLayout();
 
    void setOrientation(Qt::Orientation orientation);
    Qt::Orientation orientation() const;
 
    inline void addItem(QGraphicsLayoutItem *item) { insertItem(-1, item); }
    inline void addStretch(int stretch = 1) { insertStretch(-1, stretch); }
 
    void insertItem(int index, QGraphicsLayoutItem *item);
    void insertStretch(int index, int stretch = 1);
 
    void removeItem(QGraphicsLayoutItem *item);
    void removeAt(int index) override;
 
    void setSpacing(qreal spacing);
    qreal spacing() const;
    void setItemSpacing(int index, qreal spacing);
    qreal itemSpacing(int index) const;
 
    void setStretchFactor(QGraphicsLayoutItem *item, int stretch);
    int stretchFactor(QGraphicsLayoutItem *item) const;
 
    void setAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment);
    Qt::Alignment alignment(QGraphicsLayoutItem *item) const;
 
    void setGeometry(const QRectF &rect) override;
 
    int count() const override;
    QGraphicsLayoutItem *itemAt(int index) const override;
 
    void invalidate() override;
    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const override;
 
#if 0 // ###
    Q5SizePolicy::ControlTypes controlTypes(LayoutSide side) const;
#endif
 
    void dump(int indent = 0) const;
 
protected:
#if 0
    QSize contentsSizeHint(Qt::SizeHint which, const QSize &constraint = QSize()) const;
#endif
 
private:
    Q_DISABLE_COPY(QGraphicsLinearLayout)
    Q_DECLARE_PRIVATE(QGraphicsLinearLayout)
};
 
QT_END_NAMESPACE
 
#endif