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/****************************************************************************
**
** Copyright (C) 2010 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 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);
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
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