Import relevant source from Qt 4.8

Change-Id: I5078db4081d95290c54f39d3c0efc2fc2f62e6a6

1 files changed, 170 insertions, 0 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativeanchors_p_p.h b/src/declarative/graphicsitems/qdeclarativeanchors_p_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVEANCHORS_P_H
+#define QDECLARATIVEANCHORS_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 "private/qdeclarativeanchors_p.h"
+#include "private/qdeclarativeitemchangelistener_p.h"
+#include <private/qobject_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeAnchorLine
+{
+public:
+    QDeclarativeAnchorLine() : 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
+    };
+
+    QGraphicsObject *item;
+    AnchorLine anchorLine;
+};
+
+inline bool operator==(const QDeclarativeAnchorLine& a, const QDeclarativeAnchorLine& b)
+{
+    return a.item == b.item && a.anchorLine == b.anchorLine;
+}
+
+class QDeclarativeAnchorsPrivate : public QObjectPrivate, public QDeclarativeItemChangeListener
+{
+    Q_DECLARE_PUBLIC(QDeclarativeAnchors)
+public:
+    QDeclarativeAnchorsPrivate(QGraphicsObject *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(QGraphicsObject *);
+
+    void addDepend(QGraphicsObject *);
+    void remDepend(QGraphicsObject *);
+    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();
+
+    // QDeclarativeItemGeometryListener interface
+    void itemGeometryChanged(QDeclarativeItem *, const QRectF &, const QRectF &);
+    void _q_widgetDestroyed(QObject *);
+    void _q_widgetGeometryChanged();
+    QDeclarativeAnchorsPrivate *anchorPrivate() { return this; }
+
+    bool checkHValid() const;
+    bool checkVValid() const;
+    bool checkHAnchorValid(QDeclarativeAnchorLine anchor) const;
+    bool checkVAnchorValid(QDeclarativeAnchorLine anchor) const;
+    bool calcStretch(const QDeclarativeAnchorLine &edge1, const QDeclarativeAnchorLine &edge2, qreal offset1, qreal offset2, QDeclarativeAnchorLine::AnchorLine line, qreal &stretch);
+
+    bool isMirrored() const;
+    void updateHorizontalAnchors();
+    void updateVerticalAnchors();
+    void fillChanged();
+    void centerInChanged();
+
+    QGraphicsObject *item;
+    QDeclarativeAnchors::Anchors usedAnchors;
+
+    QGraphicsObject *fill;
+    QGraphicsObject *centerIn;
+
+    QDeclarativeAnchorLine left;
+    QDeclarativeAnchorLine right;
+    QDeclarativeAnchorLine top;
+    QDeclarativeAnchorLine bottom;
+    QDeclarativeAnchorLine vCenter;
+    QDeclarativeAnchorLine hCenter;
+    QDeclarativeAnchorLine baseline;
+
+    qreal leftMargin;
+    qreal rightMargin;
+    qreal topMargin;
+    qreal bottomMargin;
+    qreal margins;
+    qreal vCenterOffset;
+    qreal hCenterOffset;
+    qreal baselineOffset;
+};
+
+QT_END_NAMESPACE
+
+Q_DECLARE_METATYPE(QDeclarativeAnchorLine)
+
+#endif