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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLGRAPHICSANCHORS_P_H
+#define QMLGRAPHICSANCHORS_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 "qmlgraphicsanchors_p.h"
+#include "qmlgraphicsitemchangelistener_p.h"
+#include <private/qobject_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QmlGraphicsAnchorLine
+{
+public:
+    QmlGraphicsAnchorLine() : item(0), anchorLine(Invalid)
+    {
+    }
+
+    enum AnchorLine {
+        Invalid = 0x0,
+        Left = 0x01,
+        Right = 0x02,
+        Top = 0x04,
+        Bottom = 0x08,
+        HCenter = 0x10,
+        VCenter = 0x20,
+        Baseline = 0x40,
+        Horizontal_Mask = Left | Right | HCenter,
+        Vertical_Mask = Top | Bottom | VCenter | Baseline
+    };
+
+    QmlGraphicsItem *item;
+    AnchorLine anchorLine;
+
+    bool operator==(const QmlGraphicsAnchorLine& other) const
+    {
+        return item == other.item && anchorLine == other.anchorLine;
+    }
+};
+Q_DECLARE_METATYPE(QmlGraphicsAnchorLine)
+
+
+
+class QmlGraphicsAnchorsPrivate : public QObjectPrivate, public QmlGraphicsItemChangeListener
+{
+    Q_DECLARE_PUBLIC(QmlGraphicsAnchors)
+public:
+    QmlGraphicsAnchorsPrivate(QmlGraphicsItem *i)
+      : updatingMe(false), updatingHorizontalAnchor(0),
+        updatingVerticalAnchor(0), updatingFill(0), updatingCenterIn(0), item(i), usedAnchors(0), fill(0),
+        centerIn(0), leftMargin(0), rightMargin(0), topMargin(0), bottomMargin(0),
+        margins(0), vCenterOffset(0), hCenterOffset(0), baselineOffset(0),
+        componentComplete(true)
+    {
+    }
+
+    void init()
+    {
+    }
+
+    void clearItem(QmlGraphicsItem *);
+
+    void addDepend(QmlGraphicsItem *);
+    void remDepend(QmlGraphicsItem *);
+    bool isItemComplete() const;
+
+    bool updatingMe;
+    int updatingHorizontalAnchor;
+    int updatingVerticalAnchor;
+    int updatingFill;
+    int updatingCenterIn;
+
+    void setItemHeight(qreal);
+    void setItemWidth(qreal);
+    void setItemX(qreal);
+    void setItemY(qreal);
+    void setItemPos(const QPointF &);
+
+    void updateOnComplete();
+    void updateMe();
+
+    // QmlGraphicsItemGeometryListener interface
+    void itemGeometryChanged(QmlGraphicsItem *, const QRectF &, const QRectF &);
+    QmlGraphicsAnchorsPrivate *anchorPrivate() { return this; }
+
+    bool checkHValid() const;
+    bool checkVValid() const;
+    bool checkHAnchorValid(QmlGraphicsAnchorLine anchor) const;
+    bool checkVAnchorValid(QmlGraphicsAnchorLine anchor) const;
+    bool calcStretch(const QmlGraphicsAnchorLine &edge1, const QmlGraphicsAnchorLine &edge2, int offset1, int offset2, QmlGraphicsAnchorLine::AnchorLine line, int &stretch);
+
+    void updateHorizontalAnchors();
+    void updateVerticalAnchors();
+    void fillChanged();
+    void centerInChanged();
+
+    QmlGraphicsItem *item;
+    QmlGraphicsAnchors::UsedAnchors usedAnchors;
+
+    QmlGraphicsItem *fill;
+    QmlGraphicsItem *centerIn;
+
+    QmlGraphicsAnchorLine left;
+    QmlGraphicsAnchorLine right;
+    QmlGraphicsAnchorLine top;
+    QmlGraphicsAnchorLine bottom;
+    QmlGraphicsAnchorLine vCenter;
+    QmlGraphicsAnchorLine hCenter;
+    QmlGraphicsAnchorLine baseline;
+
+    qreal leftMargin;
+    qreal rightMargin;
+    qreal topMargin;
+    qreal bottomMargin;
+    qreal margins;
+    qreal vCenterOffset;
+    qreal hCenterOffset;
+    qreal baselineOffset;
+
+    bool componentComplete;
+};
+
+QT_END_NAMESPACE
+#endif