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** this package.

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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 QGRAPHICSWIDGET_P_H

#define QGRAPHICSWIDGET_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 <private/qobject_p.h>

#include "qgraphicsitem_p.h"

#include "qgraphicswidget.h"

#include <QtGui/qfont.h>

#include <QtGui/qpalette.h>

#include <QtGui/qsizepolicy.h>

#include <QtGui/qstyle.h>

QT_BEGIN_NAMESPACE

class QGraphicsLayout;

class QStyleOptionTitleBar;

#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW

class QGraphicsWidgetPrivate : public QGraphicsItemPrivate

{

    Q_DECLARE_PUBLIC(QGraphicsWidget)

public:

    QGraphicsWidgetPrivate()

        : margins(0),

          layout(0),

          inheritedPaletteResolveMask(0),

          inheritedFontResolveMask(0),

          inSetGeometry(0),

          polished(0),

          inSetPos(0),

          focusPolicy(Qt::NoFocus),

          focusNext(0),

          focusPrev(0),

          windowFlags(0),

          windowData(0),

          setWindowFrameMargins(false),

          windowFrameMargins(0)

    { }

    virtual ~QGraphicsWidgetPrivate();

    void init(QGraphicsItem *parentItem, Qt::WindowFlags wFlags);

    qreal titleBarHeight(const QStyleOptionTitleBar &options) const;

    // Margins

    enum {Left, Top, Right, Bottom};

    mutable qreal *margins;

    void ensureMargins() const;

    void fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *oldScene, QGraphicsScene *newScene = 0);

    void setLayout_helper(QGraphicsLayout *l);

    // Layouts

    QGraphicsLayout *layout;

    void setLayoutDirection_helper(Qt::LayoutDirection direction);

    void resolveLayoutDirection();

    // Style

    QPalette palette;

    uint inheritedPaletteResolveMask;

    void setPalette_helper(const QPalette &palette);

    void resolvePalette(uint inheritedMask);

    void updatePalette(const QPalette &palette);

    QPalette naturalWidgetPalette() const;

    QFont font;

    uint inheritedFontResolveMask;

    void setFont_helper(const QFont &font);

    void resolveFont(uint inheritedMask);

    void updateFont(const QFont &font);

    QFont naturalWidgetFont() const;

    // Window specific

    void initStyleOptionTitleBar(QStyleOptionTitleBar *option);

    void adjustWindowFlags(Qt::WindowFlags *wFlags);

    void windowFrameMouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    void windowFrameMousePressEvent(QGraphicsSceneMouseEvent *event);

    void windowFrameMouseMoveEvent(QGraphicsSceneMouseEvent *event);

    void windowFrameHoverMoveEvent(QGraphicsSceneHoverEvent *event);

    void windowFrameHoverLeaveEvent(QGraphicsSceneHoverEvent *event);

    bool hasDecoration() const;

    // State

    inline int attributeToBitIndex(Qt::WidgetAttribute att) const

    {

        int bit = -1;

        switch (att) {

        case Qt::WA_SetLayoutDirection: bit = 0; break;

        case Qt::WA_RightToLeft: bit = 1; break;

        case Qt::WA_SetStyle: bit = 2; break;

        case Qt::WA_Resized: bit = 3; break;

        case Qt::WA_DeleteOnClose: bit = 4; break;

        case Qt::WA_NoSystemBackground: bit = 5; break;

        case Qt::WA_OpaquePaintEvent: bit = 6; break;

        case Qt::WA_SetPalette: bit = 7; break;

        case Qt::WA_SetFont: bit = 8; break;

        case Qt::WA_WindowPropagation: bit = 9; break;

        default: break;

        }

        return bit;

    }

    inline void setAttribute(Qt::WidgetAttribute att, bool value)

    {

        int bit = attributeToBitIndex(att);

        if (bit == -1) {

            qWarning("QGraphicsWidget::setAttribute: unsupported attribute %d", int(att));

            return;

        }

        if (value)

            attributes |= (1 << bit);

        else

            attributes &= ~(1 << bit);

    }

    inline bool testAttribute(Qt::WidgetAttribute att) const

    {

        int bit = attributeToBitIndex(att);

        if (bit == -1)

            return false;

        return (attributes & (1 << bit)) != 0;

    }

    quint32 attributes : 10;

    quint32 inSetGeometry : 1;

    quint32 polished: 1;

    quint32 inSetPos : 1;

    // Focus

    Qt::FocusPolicy focusPolicy;

    QGraphicsWidget *focusNext;

    QGraphicsWidget *focusPrev;

    // Windows

    Qt::WindowFlags windowFlags;

    struct WindowData {

        QString windowTitle;

        QStyle::SubControl hoveredSubControl;

        Qt::WindowFrameSection grabbedSection;

        uint buttonMouseOver : 1;

        uint buttonSunken : 1;

        QRectF startGeometry;

        QRect buttonRect;

        WindowData()

            : hoveredSubControl(QStyle::SC_None)

            , grabbedSection(Qt::NoSection)

            , buttonMouseOver(false)

            , buttonSunken(false)

        {}

    } *windowData;

    void ensureWindowData();

    bool setWindowFrameMargins;

    mutable qreal *windowFrameMargins;

    void ensureWindowFrameMargins() const;

#ifndef QT_NO_ACTION

    QList<QAction *> actions;

#endif

};

#endif //!defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW

QT_END_NAMESPACE

#endif //QGRAPHICSWIDGET_P_H