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****************************************************************************/

#ifndef QWIDGETRESIZEHANDLER_P_H

#define QWIDGETRESIZEHANDLER_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  This header file may

// change from version to version without notice, or even be

// removed.

//

// We mean it.

//

#include "QtCore/qobject.h"

#include "QtCore/qpoint.h"

#ifndef QT_NO_RESIZEHANDLER

QT_BEGIN_NAMESPACE

class QMouseEvent;

class QKeyEvent;

class Q_GUI_EXPORT QWidgetResizeHandler : public QObject

{

    Q_OBJECT

public:

    enum Action {

        Move        = 0x01,

        Resize        = 0x02,

        Any        = Move|Resize

    };

    explicit QWidgetResizeHandler(QWidget *parent, QWidget *cw = 0);

    void setActive(bool b) { setActive(Any, b); }

    void setActive(Action ac, bool b);

    bool isActive() const { return isActive(Any); }

    bool isActive(Action ac) const;

    void setMovingEnabled(bool b) { movingEnabled = b; }

    bool isMovingEnabled() const { return movingEnabled; }

    bool isButtonDown() const { return buttonDown; }

    void setExtraHeight(int h) { extrahei = h; }

    void setSizeProtection(bool b) { sizeprotect = b; }

    void setFrameWidth(int w) { fw = w; }

    void doResize();

    void doMove();

Q_SIGNALS:

    void activate();

protected:

    bool eventFilter(QObject *o, QEvent *e);

    void mouseMoveEvent(QMouseEvent *e);

    void keyPressEvent(QKeyEvent *e);

private:

    Q_DISABLE_COPY(QWidgetResizeHandler)

    enum MousePosition {

        Nowhere,

        TopLeft, BottomRight, BottomLeft, TopRight,

        Top, Bottom, Left, Right,

        Center

    };

    QWidget *widget;

    QWidget *childWidget;

    QPoint moveOffset;

    QPoint invertedMoveOffset;

    MousePosition mode;

    int fw;

    int extrahei;

    int range;

    uint buttonDown            :1;

    uint moveResizeMode            :1;

    uint activeForResize    :1;

    uint sizeprotect            :1;

    uint movingEnabled                    :1;

    uint activeForMove            :1;

    void setMouseCursor(MousePosition m);

    bool isMove() const {

        return moveResizeMode && mode == Center;

    }

    bool isResize() const {

        return moveResizeMode && !isMove();

    }

};

QT_END_NAMESPACE

#endif // QT_NO_RESIZEHANDLER

#endif // QWIDGETRESIZEHANDLER_P_H