src/gui/graphicsview/qgraphicslayout_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QGRAPHICSLAYOUT_P_H
       
    43 #define QGRAPHICSLAYOUT_P_H
       
    44 
       
    45 //
       
    46 //  W A R N I N G
       
    47 //  -------------
       
    48 //
       
    49 // This file is not part of the Qt API.  It exists for the convenience
       
    50 // of other Qt classes.  This header file may change from version to
       
    51 // version without notice, or even be removed.
       
    52 //
       
    53 // We mean it.
       
    54 //
       
    55 
       
    56 #include <QtCore/qglobal.h>
       
    57 
       
    58 #if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
       
    59 
       
    60 #include "qgraphicslayout.h"
       
    61 #include "qgraphicslayoutitem_p.h"
       
    62 #include <QtGui/qstyle.h>
       
    63 
       
    64 QT_BEGIN_NAMESPACE
       
    65 
       
    66 class QGraphicsLayoutItem;
       
    67 class QGraphicsWidget;
       
    68 
       
    69 #ifdef QT_DEBUG
       
    70 inline bool qt_graphicsLayoutDebug()
       
    71 {
       
    72     static int checked_env = -1;
       
    73     if(checked_env == -1)
       
    74         checked_env = !!qgetenv("QT_GRAPHICSLAYOUT_DEBUG").toInt();
       
    75     return checked_env;
       
    76 }
       
    77 #endif
       
    78 
       
    79 class Q_AUTOTEST_EXPORT QGraphicsLayoutPrivate : public QGraphicsLayoutItemPrivate
       
    80 {
       
    81     Q_DECLARE_PUBLIC(QGraphicsLayout)
       
    82 
       
    83 public:
       
    84     QGraphicsLayoutPrivate() : QGraphicsLayoutItemPrivate(0, true), left(-1.0), top(-1.0), right(-1.0), bottom(-1.0), 
       
    85         activated(true) { }
       
    86 
       
    87     void reparentChildItems(QGraphicsItem *newParent);
       
    88     void getMargin(qreal *result, qreal userMargin, QStyle::PixelMetric pm) const;
       
    89     Qt::LayoutDirection visualDirection() const;
       
    90 
       
    91     void addChildLayoutItem(QGraphicsLayoutItem *item);
       
    92     void activateRecursive(QGraphicsLayoutItem *item);
       
    93 
       
    94     qreal left, top, right, bottom;
       
    95     bool activated;
       
    96 };
       
    97 
       
    98 
       
    99 QT_END_NAMESPACE
       
   100         
       
   101 #endif //QT_NO_GRAPHICSVIEW
       
   102 
       
   103 #endif