/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 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.
**
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** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_H
#define RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_H

// On Mac we need to reset this define in order to prevent definition
// of "check" macros etc. The "check" macro collides with a member function name in QtQuick.
// See AssertMacros.h in the Mac SDK.
#include <QtGlobal> // We need this for the Q_OS_MAC define.
#if defined(Q_OS_MAC)
#undef __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES
#define __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES 0
#endif

#include "qtwebengineglobal.h"

#include <QRect>
#include <QScopedPointer>
#include <QtGui/qwindowdefs.h>

class BackingStoreQt;

QT_BEGIN_NAMESPACE
class QCursor;
class QEvent;
class QPainter;
class QQuickWindow;
class QSGNode;
class QWindow;
QT_END_NAMESPACE

class RenderWidgetHostViewQt;
class WebContentsAdapterClient;

class QWEBENGINE_EXPORT RenderWidgetHostViewQtDelegate {

public:
    virtual ~RenderWidgetHostViewQtDelegate();
    virtual void initAsChild(WebContentsAdapterClient*) = 0;
    virtual QRectF screenRect() const = 0;
    virtual void setKeyboardFocus() = 0;
    virtual bool hasKeyboardFocus() = 0;
    virtual void show() = 0;
    virtual void hide() = 0;
    virtual bool isVisible() const = 0;
    virtual WId nativeWindowIdForCompositor() const = 0;
    virtual QWindow* window() const = 0;
    virtual void update(const QRect& rect = QRect()) = 0;
    virtual void updateCursor(const QCursor &) = 0;
    virtual void resize(int width, int height) = 0;

protected:
    RenderWidgetHostViewQtDelegate();
    void paint(QPainter*, const QRectF& boundingRect);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 2, 0))
    QSGNode *updatePaintNode(QSGNode *, QQuickWindow *);
#endif
    void fetchBackingStore();
    void notifyResize();
    bool forwardEvent(QEvent*);

private:
    void setView(RenderWidgetHostViewQt*);
    RenderWidgetHostViewQt *m_view;
    BackingStoreQt *m_backingStore;
    friend class RenderWidgetHostViewQt;
};

#endif // RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_H