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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@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 qt-info@nokia.com.
**
**************************************************************************/
#ifndef MOVEMANIPULATOR_H
#define MOVEMANIPULATOR_H
#include <QWeakPointer>
#include <QGraphicsItem>
#include <QGraphicsLineItem>
#include <QHash>
#include <QPointF>
#include <QRectF>
#include "controlelement.h"
#include "formeditoritem.h"
#include "rewritertransaction.h"
#include "snapper.h"
#include "formeditorview.h"
namespace QmlDesigner {
class ModelNodeChangeSet;
class Model;
class MoveManipulator
{
public:
enum Snapping {
UseSnapping,
UseSnappingAndAnchoring,
NoSnapping
};
enum State {
UseActualState,
UseBaseState
};
MoveManipulator(LayerItem *layerItem, FormEditorView *view);
~MoveManipulator();
void setItems(const QList<FormEditorItem*> &itemList);
void setItem(FormEditorItem* item);
void synchronizeInstanceParent(const QList<FormEditorItem*> &itemList);
void synchronizeParent(const QList<FormEditorItem*> &itemList, const ModelNode &parentNode);
void begin(const QPointF& beginPoint);
void update(const QPointF& updatePoint, Snapping useSnapping, State stateToBeManipulated = UseActualState);
void reparentTo(FormEditorItem *newParent);
void end(const QPointF& endPoint);
void moveBy(double deltaX, double deltaY);
void beginRewriterTransaction();
void endRewriterTransaction();
QPointF beginPoint() const;
void clear();
bool isActive() const;
protected:
void setOpacityForAllElements(qreal opacity);
QPointF findSnappingOffset(const QHash<FormEditorItem*, QRectF> &boundingRectHash);
void deleteSnapLines();
QHash<FormEditorItem*, QRectF> tanslatedBoundingRects(const QHash<FormEditorItem*, QRectF> &boundingRectHash, const QPointF& offset);
QPointF calculateBoundingRectMovementOffset(const QPointF& updatePoint);
QRectF boundingRect(FormEditorItem* item, const QPointF& updatePoint);
void generateSnappingLines(const QHash<FormEditorItem*, QRectF> &boundingRectHash);
void updateHashes();
bool itemsCanReparented() const;
void setPosition(QmlItemNode itemNode, const QPointF &position);
private:
Snapper m_snapper;
QWeakPointer<LayerItem> m_layerItem;
QWeakPointer<FormEditorView> m_view;
QList<FormEditorItem*> m_itemList;
QHash<FormEditorItem*, QRectF> m_beginItemRectHash;
QHash<FormEditorItem*, QPointF> m_beginPositionHash;
QHash<FormEditorItem*, QPointF> m_beginPositionInSceneSpaceHash;
QPointF m_beginPoint;
QHash<FormEditorItem*, double> m_beginTopMarginHash;
QHash<FormEditorItem*, double> m_beginLeftMarginHash;
QHash<FormEditorItem*, double> m_beginRightMarginHash;
QHash<FormEditorItem*, double> m_beginBottomMarginHash;
QHash<FormEditorItem*, double> m_beginHorizontalCenterHash;
QHash<FormEditorItem*, double> m_beginVerticalCenterHash;
QList<QGraphicsItem*> m_graphicsLineList;
bool m_isActive;
RewriterTransaction m_rewriterTransaction;
QPointF m_lastPosition;
};
}
#endif // MOVEMANIPULATOR_H
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