/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick CL module
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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
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** 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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QQUICKCLITEM_H
#define QQUICKCLITEM_H

#include <QtQuickCL/qtquickclglobal.h>
#include <QtQuickCL/qquickclrunnable.h>
#include <QtQuick/qquickitem.h>

QT_BEGIN_NAMESPACE

class QQuickCLItemPrivate;
class QQuickCLContext;

class Q_QUICKCL_EXPORT QQuickCLItem : public QQuickItem
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QQuickCLItem)

public:
    QQuickCLItem(QQuickItem *parent = 0);

    QQuickCLContext *context() const;

    void scheduleUpdate();

    void watchEvent(cl_event event);
    virtual void eventCompleted(cl_event event);

protected:
    virtual QQuickCLRunnable *createCL() = 0;

private slots:
    void invalidateSceneGraph(); // called by QQuickWindow, must be a slot

private:
    QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) Q_DECL_OVERRIDE;
    void releaseResources() Q_DECL_OVERRIDE;
    bool event(QEvent *) Q_DECL_OVERRIDE;
};

QT_END_NAMESPACE

#endif