/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** 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
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QBOXLAYOUT_H
#define QBOXLAYOUT_H

#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/qlayout.h>
#ifdef QT_INCLUDE_COMPAT
#include <QtWidgets/qwidget.h>
#endif

#include <limits.h>

QT_BEGIN_NAMESPACE


class QBoxLayoutPrivate;

class Q_WIDGETS_EXPORT QBoxLayout : public QLayout
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QBoxLayout)
public:
    enum Direction { LeftToRight, RightToLeft, TopToBottom, BottomToTop,
                     Down = TopToBottom, Up = BottomToTop };

    explicit QBoxLayout(Direction, QWidget *parent = Q_NULLPTR);

    ~QBoxLayout();

    Direction direction() const;
    void setDirection(Direction);

    void addSpacing(int size);
    void addStretch(int stretch = 0);
    void addSpacerItem(QSpacerItem *spacerItem);
    void addWidget(QWidget *, int stretch = 0, Qt::Alignment alignment = Qt::Alignment());
    void addLayout(QLayout *layout, int stretch = 0);
    void addStrut(int);
    void addItem(QLayoutItem *) Q_DECL_OVERRIDE;

    void insertSpacing(int index, int size);
    void insertStretch(int index, int stretch = 0);
    void insertSpacerItem(int index, QSpacerItem *spacerItem);
    void insertWidget(int index, QWidget *widget, int stretch = 0, Qt::Alignment alignment = Qt::Alignment());
    void insertLayout(int index, QLayout *layout, int stretch = 0);
    void insertItem(int index, QLayoutItem *);

    int spacing() const;
    void setSpacing(int spacing);

    bool setStretchFactor(QWidget *w, int stretch);
    bool setStretchFactor(QLayout *l, int stretch);
    void setStretch(int index, int stretch);
    int stretch(int index) const;

    QSize sizeHint() const Q_DECL_OVERRIDE;
    QSize minimumSize() const Q_DECL_OVERRIDE;
    QSize maximumSize() const Q_DECL_OVERRIDE;

    bool hasHeightForWidth() const Q_DECL_OVERRIDE;
    int heightForWidth(int) const Q_DECL_OVERRIDE;
    int minimumHeightForWidth(int) const Q_DECL_OVERRIDE;

    Qt::Orientations expandingDirections() const Q_DECL_OVERRIDE;
    void invalidate() Q_DECL_OVERRIDE;
    QLayoutItem *itemAt(int) const Q_DECL_OVERRIDE;
    QLayoutItem *takeAt(int) Q_DECL_OVERRIDE;
    int count() const Q_DECL_OVERRIDE;
    void setGeometry(const QRect&) Q_DECL_OVERRIDE;

private:
    Q_DISABLE_COPY(QBoxLayout)
};

class Q_WIDGETS_EXPORT QHBoxLayout : public QBoxLayout
{
    Q_OBJECT
public:
    QHBoxLayout();
    explicit QHBoxLayout(QWidget *parent);
    ~QHBoxLayout();


private:
    Q_DISABLE_COPY(QHBoxLayout)
};

class Q_WIDGETS_EXPORT QVBoxLayout : public QBoxLayout
{
    Q_OBJECT
public:
    QVBoxLayout();
    explicit QVBoxLayout(QWidget *parent);
    ~QVBoxLayout();


private:
    Q_DISABLE_COPY(QVBoxLayout)
};

QT_END_NAMESPACE

#endif // QBOXLAYOUT_H
