/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
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** 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
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#ifndef BOUNDINGRECTHIGHLIGHTER_H
#define BOUNDINGRECTHIGHLIGHTER_H

#include "layeritem.h"

#include <QtCore/QObject>
#include <QtCore/QWeakPointer>

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 {

class QDeclarativeViewObserver;
class BoundingBox;

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

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

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

private:
    Q_DISABLE_COPY(BoundingRectHighlighter)

    QDeclarativeViewObserver *m_view;
    QList<BoundingBox* > m_boxes;
    QList<BoundingBox* > m_freeBoxes;
    QTimer *m_animTimer;
    qreal m_animScale;
    int m_animFrame;

};

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

private:
    Q_DISABLE_COPY(BoundingBox)

};

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

} // namespace QmlJSDebugger

#endif // BOUNDINGRECTHIGHLIGHTER_H