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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/
#ifndef SNAPPER_H
#define SNAPPER_H
#include "formeditoritem.h"
QT_BEGIN_NAMESPACE
class QLineF;
QT_END_NAMESPACE
namespace QmlDesigner {
class Snapper
{
public:
Snapper();
void setContainerFormEditorItem(FormEditorItem *formEditorItem);
FormEditorItem *containerFormEditorItem() const;
void setTransformtionSpaceFormEditorItem(FormEditorItem *formEditorItem);
FormEditorItem *transformtionSpaceFormEditorItem() const;
double snappedVerticalOffset(const QRectF &boundingRect) const;
double snappedHorizontalOffset(const QRectF &boundingRect) const;
double snapTopOffset(const QRectF &boundingRect) const;
double snapRightOffset(const QRectF &boundingRect) const;
double snapLeftOffset(const QRectF &boundingRect) const;
double snapBottomOffset(const QRectF &boundingRect) const;
QList<QLineF> horizontalSnappedLines(const QRectF &boundingRect, QList<QRectF> *boundingRects = 0) const;
QList<QLineF> verticalSnappedLines(const QRectF &boundingRect, QList<QRectF> *boundingRects = 0) const;
void setSnappingDistance(double snappingDistance);
double snappingDistance() const;
void updateSnappingLines(const QList<FormEditorItem*> &exceptionList);
void updateSnappingLines(FormEditorItem* exceptionItem);
QList<QGraphicsItem*> generateSnappingLines(const QList<QRectF> &boundingRectList,
QGraphicsItem *layerItem,
const QTransform &transform);
QList<QGraphicsItem*> generateSnappingLines(const QRectF &boundingRect,
QGraphicsItem *layerItem,
const QTransform &transform);
protected:
double snappedOffsetForLines(const SnapLineMap &snappingLineMap,
double value) const;
double snappedOffsetForOffsetLines(const SnapLineMap &snappingOffsetMap,
Qt::Orientation orientation,
double value,
double lowerLimit,
double upperLimit) const;
QList<QLineF> findSnappingLines(const SnapLineMap &snappingLineMap,
Qt::Orientation orientation,
double snapLine,
double lowerLimit,
double upperLimit,
QList<QRectF> *boundingRects = 0) const;
QList<QLineF> findSnappingOffsetLines(const SnapLineMap &snappingOffsetMap,
Qt::Orientation orientation,
double snapLine,
double lowerLimit,
double upperLimit,
QList<QRectF> *boundingRects = 0) const;
QLineF createSnapLine(Qt::Orientation orientation,
double snapLine,
double lowerEdge,
double upperEdge,
const QRectF &itemRect) const;
// bool canSnap(QList<double> snappingLineList, double value) const;
private:
FormEditorItem *m_containerFormEditorItem;
FormEditorItem *m_transformtionSpaceFormEditorItem;
double m_snappingDistance;
};
}
#endif // SNAPPER_H
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