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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 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 ANCHORCONTROLLER_H
#define ANCHORCONTROLLER_H
#include <QSharedPointer>
#include <QPainterPath>
#include <QPair>
#include <QTransform>
#include <qmlanchors.h>
namespace QmlDesigner {
struct AnchorHandlePathData
{
QPainterPath sourceAnchorLinePath;
QPainterPath targetAnchorLinePath;
QPainterPath arrowPath;
QPainterPath targetNamePath;
QPointF beginArrowPoint;
QPointF endArrowPoint;
};
class FormEditorItem;
class LayerItem;
class AnchorHandleItem;
class AnchorControllerData
{
public:
AnchorControllerData(LayerItem *layerItem,
FormEditorItem *formEditorItem);
AnchorControllerData(const AnchorControllerData &other);
~AnchorControllerData();
QWeakPointer<LayerItem> layerItem;
FormEditorItem *formEditorItem;
AnchorHandleItem *topItem;
AnchorHandleItem *leftItem;
AnchorHandleItem *rightItem;
AnchorHandleItem *bottomItem;
QTransform sceneTransform;
};
class AnchorController
{
public:
AnchorController();
AnchorController(LayerItem *layerItem, FormEditorItem *formEditorItem);
AnchorController(const QSharedPointer<AnchorControllerData> &data);
void show();
void hide();
void updatePosition();
bool isValid() const;
QWeakPointer<AnchorControllerData> weakPointer() const;
FormEditorItem *formEditorItem() const;
bool isTopHandle(const AnchorHandleItem *handle) const;
bool isLeftHandle(const AnchorHandleItem *handle) const;
bool isRightHandle(const AnchorHandleItem *handle) const;
bool isBottomHandle(const AnchorHandleItem *handle) const;
void updateTargetPoint(AnchorLine::Type anchorLine, const QPointF &targetPoint);
void clearHighlight();
void highlight(AnchorLine::Type anchorLine);
private: //functions
AnchorHandlePathData createPainterPathForAnchor(const QRectF &boundingRect,
AnchorLine::Type anchorLine,
const QPointF &targetPoint = QPointF()) const;
QPainterPath createTargetAnchorLinePath(AnchorLine::Type anchorLine) const;
QPainterPath createTargetNamePathPath(AnchorLine::Type anchorLine) const;
private:
QSharedPointer<AnchorControllerData> m_data;
};
} // namespace QmlDesigner
#endif // ANCHORCONTROLLER_H
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