/****************************************************************************
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** This file is part of the QtGui module of the Qt Toolkit.
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** 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
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****************************************************************************/

#ifndef QGRAPHICSPROXYWIDGET_P_H
#define QGRAPHICSPROXYWIDGET_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qgraphicsproxywidget.h"
#include "private/qgraphicswidget_p.h"

#if !defined(QT_NO_GRAPHICSVIEW)

QT_BEGIN_NAMESPACE

class QGraphicsProxyWidgetPrivate : public QGraphicsWidgetPrivate
{
    Q_DECLARE_PUBLIC(QGraphicsProxyWidget)
public:
    QGraphicsProxyWidgetPrivate()
        : dragDropWidget(0),
          posChangeMode(NoMode),
          sizeChangeMode(NoMode),
          visibleChangeMode(NoMode),
          enabledChangeMode(NoMode),
          styleChangeMode(NoMode),
          paletteChangeMode(NoMode),
          tooltipChangeMode(NoMode),
          focusFromWidgetToProxy(0)
    { }
    void init();
    void sendWidgetMouseEvent(QGraphicsSceneMouseEvent *event);
    void sendWidgetMouseEvent(QGraphicsSceneHoverEvent *event);
    void sendWidgetKeyEvent(QKeyEvent *event);
    void setWidget_helper(QWidget *widget, bool autoShow);

    QWidget *findFocusChild(QWidget *child, bool next) const;
    void removeSubFocusHelper(QWidget *widget, Qt::FocusReason reason);

    // ### Qt 5: Remove. Workaround for reimplementation added after Qt 4.4.
    QVariant inputMethodQueryHelper(Qt::InputMethodQuery query) const;

    void _q_removeWidgetSlot();

    void embedSubWindow(QWidget *);
    void unembedSubWindow(QWidget *);

    bool isProxyWidget() const;

    QPointer<QWidget> widget;
    QPointer<QWidget> lastWidgetUnderMouse;
    QPointer<QWidget> embeddedMouseGrabber;
    QWidget *dragDropWidget;
    Qt::DropAction lastDropAction;

    void updateWidgetGeometryFromProxy();
    void updateProxyGeometryFromWidget();

    void updateProxyInputMethodAcceptanceFromWidget();

    QPointF mapToReceiver(const QPointF &pos, const QWidget *receiver) const;

    enum ChangeMode {
        NoMode,
        ProxyToWidgetMode,
        WidgetToProxyMode
    };
    quint32 posChangeMode : 2;
    quint32 sizeChangeMode : 2;
    quint32 visibleChangeMode : 2;
    quint32 enabledChangeMode : 2;
    quint32 styleChangeMode : 2;
    quint32 paletteChangeMode : 2;
    quint32 tooltipChangeMode : 2;
    quint32 focusFromWidgetToProxy : 1;
    quint32 proxyIsGivingFocus : 1;
};

QT_END_NAMESPACE

#endif

#endif