/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef BOUNDINGRECTHIGHLIGHTER_H
#define BOUNDINGRECTHIGHLIGHTER_H

#include "livelayeritem.h"

#include <QtCore/QObject>
#include <QtCore/QPointer>

QT_FORWARD_DECLARE_CLASS(QGraphicsItem)
QT_FORWARD_DECLARE_CLASS(QPainter)
QT_FORWARD_DECLARE_CLASS(QWidget)
QT_FORWARD_DECLARE_CLASS(QStyleOptionGraphicsItem)
QT_FORWARD_DECLARE_CLASS(QTimer)

namespace QmlJSDebugger {
namespace QtQuick1 {

class QDeclarativeViewInspector;
class BoundingBox;

class BoundingRectHighlighter : public LiveLayerItem
{
    Q_OBJECT
public:
    explicit BoundingRectHighlighter(QDeclarativeViewInspector *view);
    ~BoundingRectHighlighter();
    void clear();
    void highlight(QList<QGraphicsObject*> items);
    void highlight(QGraphicsObject* item);

private slots:
    void refresh();
    void itemDestroyed(QObject *);

private:
    BoundingBox *boxFor(QGraphicsObject *item) const;
    void highlightAll();
    BoundingBox *createBoundingBox(QGraphicsObject *itemToHighlight);
    void removeBoundingBox(BoundingBox *box);
    void freeBoundingBox(BoundingBox *box);

private:
    Q_DISABLE_COPY(BoundingRectHighlighter)

    QDeclarativeViewInspector *m_view;
    QList<BoundingBox* > m_boxes;
    QList<BoundingBox* > m_freeBoxes;
};

class BoundingBox : public QObject
{
    Q_OBJECT
public:
    explicit BoundingBox(QGraphicsObject *itemToHighlight, QGraphicsItem *parentItem,
                         QObject *parent = 0);
    ~BoundingBox();
    QPointer<QGraphicsObject> highlightedObject;
    QGraphicsPolygonItem *highlightPolygon;
    QGraphicsPolygonItem *highlightPolygonEdge;

private:
    Q_DISABLE_COPY(BoundingBox)

};

class BoundingBoxPolygonItem : public QGraphicsPolygonItem
{
public:
    explicit BoundingBoxPolygonItem(QGraphicsItem *item);
    int type() const;
};

} // namespace QtQuick1
} // namespace QmlJSDebugger

#endif // BOUNDINGRECTHIGHLIGHTER_H
