source: trunk/src/gui/widgets/qdockarealayout_p.h@ 713

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#ifndef QDOCKAREALAYOUT_P_H
#define QDOCKAREALAYOUT_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 "QtCore/qrect.h"
#include "QtCore/qpair.h"
#include "QtCore/qlist.h"
#include "QtCore/qvector.h"
#include "QtGui/qlayout.h"

#ifndef QT_NO_DOCKWIDGET

QT_BEGIN_NAMESPACE

class QLayoutItem;
class QWidget;
class QLayoutItem;
class QDockAreaLayoutInfo;
class QPlaceHolderItem;
class QDockWidget;
class QMainWindow;
class QWidgetAnimator;
class QMainWindowLayout;
struct QLayoutStruct;
class QTabBar;

// The classes in this file represent the tree structure that represents all the docks
// Also see the wiki internal documentation
// At the root of the tree is: QDockAreaLayout, which handles all 4 sides, so there is only one.
// For each side it has one QDockAreaLayoutInfo child. (See QDockAreaLayout::docks.)
// The QDockAreaLayoutInfo have QDockAreaLayoutItems as children (See QDockAreaLayoutInfo::item_list),
// which then has one QDockAreaLayoutInfo as a child. (QDockAreaLayoutItem::subInfo) or
// a widgetItem if this is a node of the tree (QDockAreaLayoutItem::widgetItem)
//
// A path indetifies uniquely one object in this tree, the first number beeing the side and all the following
// indexes into the QDockAreaLayoutInfo::item_list.

struct QDockAreaLayoutItem
{
    enum ItemFlags { NoFlags = 0, GapItem = 1, KeepSize = 2 };

    QDockAreaLayoutItem(QLayoutItem *_widgetItem = 0);
    QDockAreaLayoutItem(QDockAreaLayoutInfo *_subinfo);
    QDockAreaLayoutItem(QPlaceHolderItem *_placeHolderItem);
    QDockAreaLayoutItem(const QDockAreaLayoutItem &other);