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+// Commit: 2c7cab4172f1acc86fd49345a2847417e162f2c3
+/****************************************************************************
+**
+** Copyright (C) 2011 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 QSGANCHORS_P_P_H
+#define QSGANCHORS_P_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 "qsganchors_p.h"
+#include "qsgitemchangelistener_p.h"
+#include <private/qobject_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QSGAnchorLine
+{
+public:
+ QSGAnchorLine() : 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
+ };
+
+ QSGItem *item;
+ AnchorLine anchorLine;
+};
+
+inline bool operator==(const QSGAnchorLine& a, const QSGAnchorLine& b)
+{
+ return a.item == b.item && a.anchorLine == b.anchorLine;
+}
+
+class QSGAnchorsPrivate : public QObjectPrivate, public QSGItemChangeListener
+{
+ Q_DECLARE_PUBLIC(QSGAnchors)
+public:
+ QSGAnchorsPrivate(QSGItem *i)
+ : componentComplete(true), 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)
+ {
+ }
+
+ void clearItem(QSGItem *);
+
+ void addDepend(QSGItem *);
+ void remDepend(QSGItem *);
+ bool isItemComplete() const;
+
+ bool componentComplete:1;
+ bool updatingMe:1;
+ uint updatingHorizontalAnchor:2;
+ uint updatingVerticalAnchor:2;
+ uint updatingFill:2;
+ uint updatingCenterIn:2;
+
+ void setItemHeight(qreal);
+ void setItemWidth(qreal);
+ void setItemX(qreal);
+ void setItemY(qreal);
+ void setItemPos(const QPointF &);
+ void setItemSize(const QSizeF &);
+
+ void updateOnComplete();
+ void updateMe();
+
+ // QSGItemGeometryListener interface
+ void itemGeometryChanged(QSGItem *, const QRectF &, const QRectF &);
+ QSGAnchorsPrivate *anchorPrivate() { return this; }
+
+ bool checkHValid() const;
+ bool checkVValid() const;
+ bool checkHAnchorValid(QSGAnchorLine anchor) const;
+ bool checkVAnchorValid(QSGAnchorLine anchor) const;
+ bool calcStretch(const QSGAnchorLine &edge1, const QSGAnchorLine &edge2, qreal offset1, qreal offset2, QSGAnchorLine::AnchorLine line, qreal &stretch);
+
+ bool isMirrored() const;
+ void updateHorizontalAnchors();
+ void updateVerticalAnchors();
+ void fillChanged();
+ void centerInChanged();
+
+ QSGItem *item;
+ QSGAnchors::Anchors usedAnchors;
+
+ QSGItem *fill;
+ QSGItem *centerIn;
+
+ QSGAnchorLine left;
+ QSGAnchorLine right;
+ QSGAnchorLine top;
+ QSGAnchorLine bottom;
+ QSGAnchorLine vCenter;
+ QSGAnchorLine hCenter;
+ QSGAnchorLine baseline;
+
+ qreal leftMargin;
+ qreal rightMargin;
+ qreal topMargin;
+ qreal bottomMargin;
+ qreal margins;
+ qreal vCenterOffset;
+ qreal hCenterOffset;
+ qreal baselineOffset;
+
+ static inline QSGAnchorsPrivate *get(QSGAnchors *o) {
+ return static_cast<QSGAnchorsPrivate *>(QObjectPrivate::get(o));
+ }
+};
+
+QT_END_NAMESPACE
+
+Q_DECLARE_METATYPE(QSGAnchorLine)
+
+#endif