Qt Toolkit - qpopupmenu.h include file

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# qpopupmenu.h

This is the verbatim text of the qpopupmenu.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/src/widgets/qpopupmenu.h   2.3.7   edited 2001-01-26 $
    **
    ** Definition of QPopupMenu class
    **
    ** Created : 941128
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QPOPUPMENU_H
    #define QPOPUPMENU_H

    #ifndef QT_H
    #include "qframe.h"
    #include "qmenudata.h"
    #endif // QT_H

    #ifndef QT_NO_POPUPMENU

    class Q_EXPORT QPopupMenu : public QFrame, public QMenuData
    {
        Q_OBJECT
        Q_PROPERTY( bool checkable READ isCheckable WRITE setCheckable )
    public:
        QPopupMenu( QWidget *parent=0, const char *name=0 );
       ~QPopupMenu();

        void        popup( const QPoint & pos, int indexAtPoint = 0 );// open popup
        void        updateItem( int id );

        virtual void        setCheckable( bool );
        bool        isCheckable() const;

        void        setFont( const QFont & );       // reimplemented set font
        void        show();                         // reimplemented show
        void        hide();                         // reimplemented hide

        int         exec();
        int         exec( const QPoint & pos, int indexAtPoint = 0 );// modal popup

        virtual void        setActiveItem( int );
        QSize       sizeHint() const;

        int         idAt( int index ) const { return QMenuData::idAt( index ); }
        int         idAt( const QPoint& pos ) const;

        bool        customWhatsThis() const;

        int insertTearOffHandle( int id=-1, int index=-1 );

        void        activateItemAt( int index ); // ### virtual in QMenuData 3.0

    signals:
        void        activated( int itemId );
        void        highlighted( int itemId );
        void        activatedRedirect( int itemId );// to parent menu
        void        highlightedRedirect( int itemId );
        void        aboutToShow();
        void        aboutToHide();

    protected:
        int         itemHeight( int ) const;
        int         itemHeight( QMenuItem* mi ) const;
        void        drawItem( QPainter* p, int tab, QMenuItem* mi,
                       bool act, int x, int y, int w, int h);

        void        drawContents( QPainter * );

        void        closeEvent( QCloseEvent *e );
        void        paintEvent( QPaintEvent * );
        void        mousePressEvent( QMouseEvent * );
        void        mouseReleaseEvent( QMouseEvent * );
        void        mouseMoveEvent( QMouseEvent * );
        void        keyPressEvent( QKeyEvent * );
        void        focusInEvent( QFocusEvent * );
        void        focusOutEvent( QFocusEvent * );
        void        timerEvent( QTimerEvent * );
        void        styleChange( QStyle& );
        int         columns() const;

        bool focusNextPrevChild( bool next );

    private slots:
        void        subActivated( int itemId );
        void        subHighlighted( int itemId );
    #ifndef QT_NO_ACCEL
        void        accelActivated( int itemId );
        void        accelDestroyed();
    #endif
        void        modalActivation( int );

        void        subMenuTimer();
        void        allowAnimation();
        void     toggleTearOff();

    private:
        void        menuContentsChanged();
        void        menuStateChanged();
        void        menuInsPopup( QPopupMenu * );
        void        menuDelPopup( QPopupMenu * );
        void        frameChanged();

        void        actSig( int, bool = FALSE );
        void        hilitSig( int );
        virtual void        setFirstItemActive();
        void        hideAllPopups();
        void        hidePopups();
        bool        tryMenuBar( QMouseEvent * );
        void        byeMenuBar();

        int         itemAtPos( const QPoint & ) const;
        QRect               itemGeometry( int index ); // ## protected in 3.0
        void        updateSize();
        void        updateRow( int row );
    #ifndef QT_NO_ACCEL
        void        updateAccel( QWidget * );
        void        enableAccel( bool );
    #endif
        QMenuItem  *selfItem;
    #ifndef QT_NO_ACCEL
        QAccel     *autoaccel;
    #endif
        int popupActive;
        int tab;
        uint accelDisabled : 1;
        uint checkable : 1;
        uint connectModalRecursionSafety : 1;
        uint tornOff : 1;
        int maxPMWidth;
        int ncols;
        bool        snapToMouse;
        bool        tryMouseEvent( QPopupMenu *, QMouseEvent * );

        friend class QMenuData;
        friend class QMenuBar;

        void connectModal(QPopupMenu* receiver, bool doConnect);

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QPopupMenu( const QPopupMenu & );
        QPopupMenu &operator=( const QPopupMenu & );
    #endif
    };

    #endif // QT_NO_POPUPMENU

    #endif // QPOPUPMENU_H