source: trunk/src/gui/graphicsview/qgraphicswidget_p.h@ 503

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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 qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp.  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 Q_GUI_EXPORT QGraphicsWidgetPrivate : public QGraphicsItemPrivate
{
    Q_DECLARE_PUBLIC(QGraphicsWidget)
public:
    QGraphicsWidgetPrivate()
        : leftMargin(0),
          topMargin(0),
          rightMargin(0),
          bottomMargin(0),
          leftLayoutItemMargin(0),
          topLayoutItemMargin(0),
          rightLayoutItemMargin(0),
          bottomLayoutItemMargin(0),
          layout(0),
          inheritedPaletteResolveMask(0),
          inheritedFontResolveMask(0),
          inSetGeometry(0),
          polished(0),
          inSetPos(0),
          focusPolicy(Qt::NoFocus),
          focusNext(0),
          focusPrev(0),
          focusChild(0),
          windowFlags(0),
          hoveredSubControl(QStyle::SC_None),
          grabbedSection(Qt::NoSection),
          buttonMouseOver(false),
          buttonSunken(false),
          setWindowFrameMargins(false),
          leftWindowFrameMargin(0),
          topWindowFrameMargin(0),
          rightWindowFrameMargin(0),
          bottomWindowFrameMargin(0)
    { }

    void init(QGraphicsItem *parentItem, Qt::WindowFlags wFlags);
    qreal titleBarHeight(const QStyleOptionTitleBar &options) const;

    // Margins
    qreal leftMargin;
    qreal topMargin;
    qreal rightMargin;
    qreal bottomMargin;
    QRectF contentsRect;

    // Layout item margins
    void getLayoutItemMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const;
    void setLayoutItemMargins(qreal left, qreal top, qreal right, qreal bottom);
    void setLayoutItemMargins(QStyle::SubElement element, const QStyleOption *opt = 0);

    void fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *newScene = 0);
    void setLayout_helper(QGraphicsLayout *l);

    qreal leftLayoutItemMargin;
    qreal topLayoutItemMargin;
    qreal rightLayoutItemMargin;
    qreal bottomLayoutItemMargin;

    // Layouts
    QGraphicsLayout *layout;
    void setLayoutDirection_helper(Qt::LayoutDirection direction);
    void resolveLayoutDirection();

    // Style