Qt Toolkit - qevent.h include file

# qevent.h

This is the verbatim text of the qevent.h include file. It is is provided only for illustration; the copyright remains with Troll Tech.

    /****************************************************************************
    ** $Id: qevent.h,v 2.21.2.4 1998/10/05 13:15:14 hanord Exp $
    **
    ** Definition of event classes
    **
    ** Created : 931029
    **
    ** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
    **
    ** This file is part of Qt Free Edition, version 1.45.
    **
    ** See the file LICENSE included in the distribution for the usage
    ** and distribution terms, or http://www.troll.no/free-license.html.
    **
    ** IMPORTANT NOTE: You may NOT copy this file or any part of it into
    ** your own programs or libraries.
    **
    ** Please see http://www.troll.no/pricing.html for information about
    ** Qt Professional Edition, which is this same library but with a
    ** license which allows creation of commercial/proprietary software.
    **
    *****************************************************************************/

    #ifndef QEVENT_H
    #define QEVENT_H

    #ifndef QT_H
    #include "qwindowdefs.h"
    #include "qrect.h"
    #include "qstring.h"
    #endif // QT_H

    #define Event_None                  0           // invalid event
    #define Event_Timer                 1           // timer event
    #define Event_MouseButtonPress      2           // mouse button pressed
    #define Event_MouseButtonRelease    3           // mouse button released
    #define Event_MouseButtonDblClick   4           // mouse button double click
    #define Event_MouseMove             5           // mouse move
    #define Event_KeyPress              6           // key pressed
    #define Event_KeyRelease            7           // key released
    #define Event_FocusIn               8           // keyboard focus received
    #define Event_FocusOut              9           // keyboard focus lost
    #define Event_Enter                10           // mouse enters widget
    #define Event_Leave                11           // mouse leaves widget
    #define Event_Paint                12           // paint widget
    #define Event_Move                 13           // move widget
    #define Event_Resize               14           // resize widget
    #define Event_Create               15           // after object creation
    #define Event_Destroy              16           // during object destruction
    #define Event_Show                 17           // widget is shown
    #define Event_Hide                 18           // widget is hidden
    #define Event_Close                19           // request to close widget
    #define Event_Quit                 20           // request to quit application
    #define Event_Accel                30           // accelerator event
    #define Event_Clipboard            40           // internal clipboard event
    #define Event_SockAct              50           // socket activation
    #define Event_DragEnter            60           // drag moves into widget
    #define Event_DragMove             61           // drag moves in widget
    #define Event_DragLeave            62           // drag leaves or is cancelled
    #define Event_Drop                 63           // actual drop
    #define Event_DragResponse         64           // drag accepted/rejected
    #define Event_ChildInserted        70           // new child widget
    #define Event_ChildRemoved         71           // deleted child widget
    #define Event_LayoutHint           72           // child min/max size changed
    #define Event_ActivateControl      80           // ActiveX activation
    #define Event_DeactivateControl    81           // ActiveX deactivation
    #define Event_User               1000           // first user event id

    class Q_EXPORT QEvent                           // event base class
    {
    public:
        QEvent( int type )
            : t(type), posted(FALSE) {}
       ~QEvent()                    { if ( posted ) peErrMsg(); }
        int   type()        const   { return t; }
    protected:
        int   t;
        bool  posted;
    private:
        void  peErrMsg();
    };

    class Q_EXPORT QTimerEvent : public QEvent      // timer event
    {
    public:
        QTimerEvent( int timerId )
            : QEvent(Event_Timer), id(timerId) {}
        int   timerId()     const   { return id; }
    protected:
        int   id;
    };

    #define Q_TIMER_EVENT(x)        ((QTimerEvent*)x)

    enum ButtonState {                              // mouse/keyboard state values
        NoButton        = 0x00,
        LeftButton      = 0x01,
        RightButton     = 0x02,
        MidButton       = 0x04,
        MouseButtonMask = 0x07,
        ShiftButton     = 0x08,
        ControlButton   = 0x10,
        AltButton       = 0x20,
        KeyButtonMask   = 0x38
    };

    class Q_EXPORT QMouseEvent : public QEvent      // mouse event
    {
    public:
        QMouseEvent( int type, const QPoint &pos, int button, int state )
            : QEvent(type), p(pos), b(button),s((ushort)state) {}
        QMouseEvent( int type, const QPoint &pos, const QPoint&globalPos, int button, int state )
            : QEvent(type), p(pos), b(button),s((ushort)state) {g = globalPos;}

        const QPoint &pos() const   { return p; }
        const QPoint &globalPos() const { return g; }
        int    x()          const   { return p.x(); }
        int    y()          const   { return p.y(); }
        int    globalX()            const   { return g.x(); }
        int    globalY()            const   { return g.y(); }
        int    button()     const   { return b; }
        int    state()      const   { return s; }
    protected:
        QPoint p;
        static QPoint g; // ### is non-static in 2.0
        int    b;
        ushort s;
    };

    #define Q_MOUSE_EVENT(x)        ((QMouseEvent*)x)

    class Q_EXPORT QKeyEvent : public QEvent        // keyboard event
    {
    public:
        QKeyEvent( int type, int key, int ascii, int state )
            : QEvent(type), k((ushort)key), s((ushort)state), a((uchar)ascii),
              accpt(TRUE) {}
        int    key()        const   { return k; }
        int    ascii()      const   { return a; }
        int    state()      const   { return s; }
        bool   isAccepted() const   { return accpt; }
        void   accept()             { accpt = TRUE; }
        void   ignore()             { accpt = FALSE; }
    protected:
        ushort k, s;
        uchar  a;
        char   accpt;                               // ### Qt 2.0: bool
    };

    #define Q_KEY_EVENT(x)          ((QKeyEvent*)x)

    class Q_EXPORT QFocusEvent : public QEvent      // widget focus event
    {
    public:
        QFocusEvent( int type )
            : QEvent(type) {}
        bool   gotFocus()   const { return type() == Event_FocusIn; }
        bool   lostFocus()  const { return type() == Event_FocusOut; }
    };

    #define Q_FOCUS_EVENT(x)        ((QFocusEvent*)x)

    class Q_EXPORT QPaintEvent : public QEvent      // widget paint event
    {
    public:
        QPaintEvent( const QRect &paintRect )
            : QEvent(Event_Paint), r(paintRect) {}
        const QRect &rect() const   { return r; }
    protected:
        QRect r;
    };

    #define Q_PAINT_EVENT(x)        ((QPaintEvent*)x)

    class Q_EXPORT QMoveEvent : public QEvent       // widget move event
    {
    public:
        QMoveEvent( const QPoint &pos, const QPoint &oldPos )
            : QEvent(Event_Move), p(pos), oldp(oldPos) {}
        const QPoint &pos()   const { return p; }
        const QPoint &oldPos()const { return oldp;}
    protected:
        QPoint p, oldp;
    };

    #define Q_MOVE_EVENT(x)         ((QMoveEvent*)x)

    class Q_EXPORT QResizeEvent : public QEvent     // widget resize event
    {
    public:
        QResizeEvent( const QSize &size, const QSize &oldSize )
            : QEvent(Event_Resize), s(size), olds(oldSize) {}
        const QSize &size()   const { return s; }
        const QSize &oldSize()const { return olds;}
    protected:
        QSize s, olds;
    };

    #define Q_RESIZE_EVENT(x)       ((QResizeEvent*)x)

    class Q_EXPORT QCloseEvent : public QEvent      // widget close event
    {
    public:
        QCloseEvent()
            : QEvent(Event_Close), accpt(FALSE) {}
        bool   isAccepted() const   { return accpt; }
        void   accept()             { accpt = TRUE; }
        void   ignore()             { accpt = FALSE; }
    protected:
        bool   accpt;
    };

    #define Q_CLOSE_EVENT(x)        ((QCloseEvent*)x)

    class Q_EXPORT QShowEvent : public QEvent       // widget show event
    {
    public:
        QShowEvent(bool spontaneous)
            : QEvent(Event_Show), spont(spontaneous) {}
        bool spontaneous() const { return spont; }
    protected:
        bool spont;
    };

    #define Q_SHOW_EVENT(x)         ((QShowEvent*)x)

    class Q_EXPORT QHideEvent : public QEvent       // widget hide event
    {
    public:
        QHideEvent(bool spontaneous)
            : QEvent(Event_Hide), spont(spontaneous) {}
        bool spontaneous() const { return spont; }
    protected:
        bool spont;
    };

    #define Q_HIDE_EVENT(x)         ((QHideEvent*)x)

    // this class is rather closed at the moment.  if you need to create
    // your own QDragMoveEvent objects, write to qt-bugs@troll.no and
    // we'll try to find a way to extend it so it covers your needs.

    class Q_EXPORT QDragMoveEvent : public QEvent
    {
    public:
        QDragMoveEvent( const QPoint& pos )
            : QEvent(Event_DragMove), p(pos), accpt(FALSE), d(0),
              rect( p,QSize( 1, 1 ) ) {}
        const QPoint& pos() const   { return p; }
        bool   isAccepted() const   { return accpt; }
        void   accept()             { accpt = TRUE; }
        void   ignore()             { accpt = FALSE; }
        void   accept( const QRect & r) { accpt = TRUE; rect = r; }
        void   ignore( const QRect & r) { accpt =FALSE; rect = r; }
        QRect  answerRect() const { return rect; }
        const char * format( int n = 0 );
        bool provides( const char * );
        QByteArray data( const char * );
    protected:
        QDragMoveEvent( const QPoint& pos, int type )
            : QEvent(type), p(pos), accpt(FALSE), d(0),
              rect( p,QSize( 1, 1 ) ) {}
        QPoint p;
        bool   accpt;
        void * d;
        QRect rect;
    };

    class Q_EXPORT QDragEnterEvent : public QDragMoveEvent
    {
    public:
        QDragEnterEvent( const QPoint& pos ) :
            QDragMoveEvent(pos, Event_DragEnter) { }
    };

    class Q_EXPORT QDragResponseEvent : public QEvent
    {
    public:
        QDragResponseEvent( bool accepted )
            : QEvent(Event_DragResponse), a(accepted) {}
        bool   dragAccepted() const { return a; }
    protected:
        bool a;
    };

    class Q_EXPORT QDragLeaveEvent : public QEvent
    {
    public:
        QDragLeaveEvent()
            : QEvent(Event_DragLeave) {}
    };

    class Q_EXPORT QDropEvent : public QEvent
    {
    public:
        QDropEvent( const QPoint& pos )
            : QEvent(Event_Drop), p(pos), accpt(FALSE) {}
        const QPoint &pos() const   { return p; }
        bool   isAccepted() const   { return accpt; }
        void   accept()             { accpt = TRUE; }
        void   ignore()             { accpt = FALSE; }
        QByteArray data( const char * );
    protected:
        QPoint p;
        bool   accpt;
    };

    class Q_EXPORT QChildEvent : public QEvent
    {
    public:
        QChildEvent( int type, QWidget *child )
            : QEvent(type), c(child) {}
        QWidget *child() const      { return c; }
        bool inserted() const { return t == Event_ChildInserted; }
        bool removed() const { return t == Event_ChildRemoved; }
    protected:
        QWidget *c;
    };

    class Q_EXPORT QCustomEvent : public QEvent     // user-defined event
    {
    public:
        QCustomEvent( int type, void *data )
            : QEvent(type), d(data) {}
        void       *data()  const   { return d; }
    private:
        void       *d;
    };

    #define Q_CUSTOM_EVENT(x)       ((QCustomEvent*)x)

    #endif // QEVENT_H