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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QTOOLBARAREALAYOUT_P_H
#define QTOOLBARAREALAYOUT_P_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 <QList>
#include <QSize>
#include <QRect>

QT_BEGIN_NAMESPACE

#ifndef QT_NO_TOOLBAR

class QToolBar;
class QLayoutItem;
class QMainWindow;
class QStyleOptionToolBar;

class QToolBarAreaLayoutItem
{
public:
    QToolBarAreaLayoutItem(QLayoutItem *item = 0)
        : widgetItem(item), pos(0), size(-1), extraSpace(0), gap(false) {}

    bool skip() const;
    QSize minimumSize() const;
    QSize sizeHint() const;
    QSize realSizeHint() const; 

    QLayoutItem *widgetItem;
    int pos;
    int size;
    int extraSpace;
    bool gap;
};

class QToolBarAreaLayoutLine
{
public:
    QToolBarAreaLayoutLine(Qt::Orientation orientation);

    QSize sizeHint() const;
    QSize minimumSize() const;

    void fitLayout();
    bool skip() const;

    QRect rect;
    Qt::Orientation o;

    QList<QToolBarAreaLayoutItem> toolBarItems;
};

class QToolBarAreaLayoutInfo
{
public:
    enum { EmptyDockAreaSize = 80 }; // when a dock area is empty, how "wide" is it?

    QToolBarAreaLayoutInfo(QInternal::DockPosition pos = QInternal::TopDock);

    QList<QToolBarAreaLayoutLine> lines;

    QSize sizeHint() const;
    QSize minimumSize() const;

    void fitLayout();

    QLayoutItem *insertToolBar(QToolBar *before, QToolBar *toolBar);
    void insertItem(QToolBar *before, QLayoutItem *item);
    void removeToolBar(QToolBar *toolBar);
    void insertToolBarBreak(QToolBar *before);
    void removeToolBarBreak(QToolBar *before);
    void moveToolBar(QToolBar *toolbar, int pos); 

    QList<int> gapIndex(const QPoint &pos) const;
    bool insertGap(QList<int> path, QLayoutItem *item);
    void clear();
    QRect itemRect(QList<int> path) const;
    QRect appendLineDropRect() const;

    QRect rect;
    Qt::Orientation o;
    QInternal::DockPosition dockPos;
    bool dirty;
};

class QToolBarAreaLayout
{
public:
    enum { // sentinel values used to validate state data
        ToolBarStateMarker = 0xfe,
        ToolBarStateMarkerEx = 0xfc
    };

    QRect rect;
    QMainWindow *mainWindow;
    QToolBarAreaLayoutInfo docks[4];
    bool visible;

    QToolBarAreaLayout(QMainWindow *win);

    QRect fitLayout();

    QSize minimumSize(const QSize &centerMin) const;
    QRect rectHint(const QRect &r) const;
    QSize sizeHint(const QSize &center) const;
    void apply(bool animate);

    QLayoutItem *itemAt(int *x, int index) const;
    QLayoutItem *takeAt(int *x, int index);
    void deleteAllLayoutItems();

    QLayoutItem *insertToolBar(QToolBar *before, QToolBar *toolBar);
    void removeToolBar(QToolBar *toolBar);
    QLayoutItem *addToolBar(QInternal::DockPosition pos, QToolBar *toolBar);
    void insertToolBarBreak(QToolBar *before);
    void removeToolBarBreak(QToolBar *before);
    void addToolBarBreak(QInternal::DockPosition pos);
    void moveToolBar(QToolBar *toolbar, int pos); 

    void insertItem(QInternal::DockPosition pos, QLayoutItem *item);
    void insertItem(QToolBar *before, QLayoutItem *item);

    QInternal::DockPosition findToolBar(QToolBar *toolBar) const;
    bool toolBarBreak(QToolBar *toolBar) const;

    void getStyleOptionInfo(QStyleOptionToolBar *option, QToolBar *toolBar) const;

    QList<int> indexOf(QWidget *toolBar) const;
    QList<int> gapIndex(const QPoint &pos) const;
    QList<int> currentGapIndex() const;
    bool insertGap(QList<int> path, QLayoutItem *item);
    void remove(QList<int> path);
    void remove(QLayoutItem *item);
    void clear();
    QToolBarAreaLayoutItem &item(QList<int> path);
    QRect itemRect(QList<int> path) const;
    QLayoutItem *plug(QList<int> path);
    QLayoutItem *unplug(QList<int> path, QToolBarAreaLayout *other);

    void saveState(QDataStream &stream) const;
    bool restoreState(QDataStream &stream, const QList<QToolBar*> &toolBars, uchar tmarker, bool pre43, bool testing = false);
    bool isEmpty() const;
};


QT_END_NAMESPACE
#endif // QT_NO_TOOLBAR
#endif // QTOOLBARAREALAYOUT_P_H