qevent.h Include File

Home | All Classes | Main Classes | Annotated | Grouped Classes | Functions |

# qevent.h

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

    /****************************************************************************
    ** $Id: qt/qevent.h   3.3.1   edited Nov 15 19:20 $
    **
    ** Definition of event classes
    **
    ** Created : 931029
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel 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 QEVENT_H
    #define QEVENT_H

    #ifndef QT_H
    #include "qwindowdefs.h"
    #include "qregion.h"
    #include "qnamespace.h"
    #include "qmime.h"
    #include "qpair.h"
    #endif // QT_H

    class Q_EXPORT QEvent: public Qt		// event base class
    {
    public:
        enum Type {

    	/*
    	  If you get a strange compiler error on the line with None,
    	  it's probably because you're also including X11 headers,
    	  which #define the symbol None. Put the X11 includes after
    	  the Qt includes to solve this problem.
    	*/

    	None = 0,				// invalid event

    	Timer = 1,				// timer event
    	MouseButtonPress = 2,			// mouse button pressed
    	MouseButtonRelease = 3,			// mouse button released
    	MouseButtonDblClick = 4,		// mouse button double click
    	MouseMove = 5,				// mouse move
    	KeyPress = 6,				// key pressed
    	KeyRelease = 7,				// key released
    	FocusIn = 8,				// keyboard focus received
    	FocusOut = 9,				// keyboard focus lost
    	Enter = 10,				// mouse enters widget
    	Leave = 11,				// mouse leaves widget
    	Paint = 12,				// paint widget
    	Move = 13,				// move widget
    	Resize = 14,				// resize widget
    	Create = 15,				// after object creation
    	Destroy = 16,				// during object destruction
    	Show = 17,				// widget is shown
    	Hide = 18,				// widget is hidden
    	Close = 19,				// request to close widget
    	Quit = 20,				// request to quit application
    	Reparent = 21,				// widget has been reparented
    	ShowMinimized = 22,		       	// widget is shown minimized
    	ShowNormal = 23,	       		// widget is shown normal
    	WindowActivate = 24,	       		// window was activated
    	WindowDeactivate = 25,	       		// window was deactivated
    	ShowToParent = 26,	       		// widget is shown to parent
    	HideToParent = 27,	       		// widget is hidden to parent
    	ShowMaximized = 28,		       	// widget is shown maximized
    	ShowFullScreen = 29,			// widget is shown full-screen
    	Accel = 30,				// accelerator event
    	Wheel = 31,				// wheel event
    	AccelAvailable = 32,			// accelerator available event
    	CaptionChange = 33,			// caption changed
    	IconChange = 34,			// icon changed
    	ParentFontChange = 35,			// parent font changed
    	ApplicationFontChange = 36,		// application font changed
    	ParentPaletteChange = 37,		// parent palette changed
    	ApplicationPaletteChange = 38,		// application palette changed
    	PaletteChange = 39,			// widget palette changed
    	Clipboard = 40,				// internal clipboard event
    	Speech = 42,				// reserved for speech input
    	SockAct = 50,				// socket activation
    	AccelOverride = 51,			// accelerator override event
    	DeferredDelete = 52,			// deferred delete event
    	DragEnter = 60,				// drag moves into widget
    	DragMove = 61,				// drag moves in widget
    	DragLeave = 62,				// drag leaves or is cancelled
    	Drop = 63,				// actual drop
    	DragResponse = 64,			// drag accepted/rejected
    	ChildInserted = 70,			// new child widget
    	ChildRemoved = 71,			// deleted child widget
    	LayoutHint = 72,			// child min/max size changed
    	ShowWindowRequest = 73,			// widget's window should be mapped
    	WindowBlocked = 74,			// window is about to be blocked modally
    	WindowUnblocked = 75,			// windows modal blocking has ended
    	ActivateControl = 80,			// ActiveX activation
    	DeactivateControl = 81,			// ActiveX deactivation
    	ContextMenu = 82,			// context popup menu
    	IMStart = 83,				// input method composition start
    	IMCompose = 84,				// input method composition
    	IMEnd = 85,				// input method composition end
    	Accessibility = 86,			// accessibility information is requested
    	TabletMove = 87,			// Wacom tablet event
    	LocaleChange = 88,			// the system locale changed
    	LanguageChange = 89,			// the application language changed
    	LayoutDirectionChange = 90,		// the layout direction changed
    	Style = 91,				// internal style event
    	TabletPress = 92,			// tablet press
    	TabletRelease = 93,			// tablet release
    	OkRequest = 94,				// CE (Ok) button pressed
    	HelpRequest = 95,			// CE (?)  button pressed
    	IconDrag = 96,                          // proxy icon dragged
    	WindowStateChange = 96,			// window state has changed
    	User = 1000,				// first user event id
    	MaxUser = 65535				// last user event id
        };

        QEvent( Type type ) : t(type), posted(FALSE), spont(FALSE) {}
        virtual ~QEvent();
        Type  type() const	{ return t; }
        bool spontaneous() const 	{ return spont; }
    protected:
        Type  t;
    private:
        uint posted : 1;
        uint spont : 1;

        friend class QApplication;
        friend class QAccelManager;
        friend class QBaseApplication;
        friend class QETWidget;
    };

    class Q_EXPORT QTimerEvent : public QEvent
    {
    public:
        QTimerEvent( int timerId )
    	: QEvent(Timer), id(timerId) {}
        int	  timerId()	const	{ return id; }
    protected:
        int	  id;
    };

    class Q_EXPORT QMouseEvent : public QEvent
    {
    public:
        QMouseEvent( Type type, const QPoint &pos, int button, int state );

        QMouseEvent( Type type, const QPoint &pos, const QPoint&globalPos,
    		 int button, int state )
    	: QEvent(type), p(pos), g(globalPos), b((ushort)button),s((ushort)state),accpt(TRUE) {};

        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(); }
        ButtonState button() const	{ return (ButtonState) b; }
        ButtonState state()	const	{ return (ButtonState) s; }
        ButtonState stateAfter() const;
        bool   isAccepted() const	{ return accpt; }
        void   accept()		{ accpt = TRUE; }
        void   ignore()		{ accpt = FALSE; }
    protected:
        QPoint p;
        QPoint g;
        ushort b;
        ushort s;
        uint   accpt:1;
    };

    #ifndef QT_NO_WHEELEVENT
    class Q_EXPORT QWheelEvent : public QEvent
    {
    public:
        QWheelEvent( const QPoint &pos, int delta, int state, Orientation orient = Vertical );
        QWheelEvent( const QPoint &pos, const QPoint& globalPos, int delta, int state, Orientation orient = Vertical  )
    	: QEvent(Wheel), p(pos), g(globalPos), d(delta), s((ushort)state),
    	  accpt(TRUE), o(orient) {}
        int	   delta()	const	{ return d; }
        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(); }
        ButtonState state()	const	{ return ButtonState(s); }
        Orientation orientation() 	const 	{ return o; }
        bool   isAccepted() const	{ return accpt; }
        void   accept()		{ accpt = TRUE; }
        void   ignore()		{ accpt = FALSE; }
    protected:
        QPoint p;
        QPoint g;
        int d;
        ushort s;
        bool   accpt;
        Orientation o;
    };
    #endif

    class Q_EXPORT QTabletEvent : public QEvent
    {
    public:
        enum TabletDevice { NoDevice = -1, Puck, Stylus, Eraser };
        QTabletEvent( Type t, const QPoint &pos, const QPoint &globalPos, int device,
    		  int pressure, int xTilt, int yTilt, const QPair<int,int> &uId );
        QTabletEvent( const QPoint &pos, const QPoint &globalPos, int device,
    		  int pressure, int xTilt, int yTilt, const QPair<int,int> &uId )
    	: QEvent( TabletMove ), mPos( pos ), mGPos( globalPos ), mDev( device ),
    	  mPress( pressure ), mXT( xTilt ), mYT( yTilt ), mType( uId.first ),
    	  mPhy( uId.second ), mbAcc(TRUE)
        {}
        int pressure()	const { return mPress; }
        int xTilt()		const { return mXT; }
        int yTilt()		const { return mYT; }
        const QPoint &pos()	const { return mPos; }
        const QPoint &globalPos() const { return mGPos; }
        int x()		const { return mPos.x(); }
        int y()		const { return mPos.y(); }
        int globalX()	const { return mGPos.x(); }
        int globalY()	const { return mGPos.y(); }
        TabletDevice device() 	const { return TabletDevice(mDev); }
        int isAccepted() const { return mbAcc; }
        void accept() { mbAcc = TRUE; }
        void ignore() { mbAcc = FALSE; }
        QPair<int,int> uniqueId() { return QPair<int,int>( mType, mPhy); }
    protected:
        QPoint mPos;
        QPoint mGPos;
        int mDev,
    	mPress,
    	mXT,
    	mYT,
    	mType,
    	mPhy;
        bool mbAcc;

    };

    class Q_EXPORT QKeyEvent : public QEvent
    {
    public:
        QKeyEvent( Type type, int key, int ascii, int state,
    		const QString& text=QString::null, bool autorep=FALSE, ushort count=1 )
    	: QEvent(type), txt(text), k((ushort)key), s((ushort)state),
    	    a((uchar)ascii), accpt(TRUE), autor(autorep), c(count)
        {
    	if ( key >= Key_Back && key <= Key_MediaLast )
    	    accpt = FALSE;
        }
        int	   key()	const	{ return k; }
        int	   ascii()	const	{ return a; }
        ButtonState state()	const	{ return ButtonState(s); }
        ButtonState stateAfter() const;
        bool   isAccepted() const	{ return accpt; }
        QString text()      const   { return txt; }
        bool   isAutoRepeat() const	{ return autor; }
        int   count() const	{ return int(c); }
        void   accept()		{ accpt = TRUE; }
        void   ignore()		{ accpt = FALSE; }

    protected:
        QString txt;
        ushort k, s;
        uchar  a;
        uint   accpt:1;
        uint   autor:1;
        ushort c;
    };

    class Q_EXPORT QFocusEvent : public QEvent
    {
    public:

        QFocusEvent( Type type )
    	: QEvent(type) {}

        bool   gotFocus()	const { return type() == FocusIn; }
        bool   lostFocus()	const { return type() == FocusOut; }

        enum Reason { Mouse, Tab, Backtab, ActiveWindow, Popup, Shortcut, Other };
        static Reason reason();
        static void setReason( Reason reason );
        static void resetReason();

    private:
        static Reason m_reason;
        static Reason prev_reason;
    };

    class Q_EXPORT QPaintEvent : public QEvent
    {
    public:
        QPaintEvent( const QRegion& paintRegion, bool erased = TRUE)
    	: QEvent(Paint),
    	  rec(paintRegion.boundingRect()),
    	  reg(paintRegion),
    	  erase(erased){}
        QPaintEvent( const QRect &paintRect, bool erased = TRUE )
    	: QEvent(Paint),
    	  rec(paintRect),
    	  reg(paintRect),
    	  erase(erased){}
        QPaintEvent( const QRegion &paintRegion, const QRect &paintRect, bool erased = TRUE )
    	: QEvent(Paint),
    	  rec(paintRect),
    	  reg(paintRegion),
    	  erase(erased){}

        const QRect &rect() const	  { return rec; }
        const QRegion &region() const { return reg; }
        bool erased() const { return erase; }
    protected:
        friend class QApplication;
        friend class QBaseApplication;
        QRect rec;
        QRegion reg;
        bool erase;
    };

    class Q_EXPORT QMoveEvent : public QEvent
    {
    public:
        QMoveEvent( const QPoint &pos, const QPoint &oldPos )
    	: QEvent(Move), p(pos), oldp(oldPos) {}
        const QPoint &pos()	  const { return p; }
        const QPoint &oldPos()const { return oldp;}
    protected:
        QPoint p, oldp;
        friend class QApplication;
        friend class QBaseApplication;
    };

    class Q_EXPORT QResizeEvent : public QEvent
    {
    public:
        QResizeEvent( const QSize &size, const QSize &oldSize )
    	: QEvent(Resize), s(size), olds(oldSize) {}
        const QSize &size()	  const { return s; }
        const QSize &oldSize()const { return olds;}
    protected:
        QSize s, olds;
        friend class QApplication;
        friend class QBaseApplication;
    };

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

    class Q_EXPORT QIconDragEvent : public QEvent
    {
    public:
        QIconDragEvent()
    	: QEvent(IconDrag), accpt(FALSE) {}

        bool   isAccepted() const	{ return accpt; }
        void   accept()		{ accpt = TRUE; }
        void   ignore()		{ accpt = FALSE; }
    protected:
        bool   accpt;
    };

    class Q_EXPORT QShowEvent : public QEvent
    {
    public:
        QShowEvent()
    	: QEvent(Show) {}
    };

    class Q_EXPORT QHideEvent : public QEvent
    {
    public:
        QHideEvent()
    	: QEvent(Hide) {}
    };

    class Q_EXPORT QContextMenuEvent : public QEvent
    {
    public:
        enum Reason { Mouse, Keyboard, Other };
        QContextMenuEvent( Reason reason, const QPoint &pos, const QPoint &globalPos, int state )
    	: QEvent( ContextMenu ), p( pos ), gp( globalPos ), accpt( TRUE ), consum( TRUE ),
    	reas( reason ), s((ushort)state) {}
        QContextMenuEvent( Reason reason, const QPoint &pos, int state );

        int	    x() const { return p.x(); }
        int	    y() const { return p.y(); }
        int	    globalX() const { return gp.x(); }
        int	    globalY() const { return gp.y(); }

        const QPoint&   pos() const { return p; }
        const QPoint&   globalPos() const { return gp; }

        ButtonState state()	const	{ return (ButtonState) s; }
        bool    isAccepted() const	{ return accpt; }
        bool    isConsumed() const	{ return consum; }
        void    consume()		{ accpt = FALSE; consum = TRUE; }
        void    accept()		{ accpt = TRUE; consum = TRUE; }
        void    ignore()		{ accpt = FALSE; consum = FALSE; }

        Reason  reason() const { return Reason( reas ); }

    protected:
        QPoint  p;
        QPoint  gp;
        bool    accpt;
        bool    consum;
        uint    reas:8;
        ushort s;
    };

    class Q_EXPORT QIMEvent : public QEvent
    {
    public:
        QIMEvent( Type type, const QString &text, int cursorPosition )
    	: QEvent(type), txt(text), cpos(cursorPosition), a(TRUE) {}
        const QString &text() const { return txt; }
        int cursorPos() const { return cpos; }
        bool isAccepted() const { return a; }
        void accept() { a = TRUE; }
        void ignore() { a = FALSE; }
        int selectionLength() const;

    private:
        QString txt;
        int cpos;
        bool a;
    };

    class Q_EXPORT QIMComposeEvent : public QIMEvent
    {
    public:
        QIMComposeEvent( Type type, const QString &text, int cursorPosition,
    		     int selLength )
    	: QIMEvent( type, text, cursorPosition ), selLen( selLength ) { }

    private:
        int selLen;

        friend class QIMEvent;
    };

    inline int QIMEvent::selectionLength() const
    {
        if ( type() != IMCompose ) return 0;
        QIMComposeEvent *that = (QIMComposeEvent *) this;
        return that->selLen;
    }

    #ifndef QT_NO_DRAGANDDROP

    // This class is rather closed at the moment.  If you need to create your
    // own DND event objects, write to qt-bugs@trolltech.com and we'll try to
    // find a way to extend it so it covers your needs.

    class Q_EXPORT QDropEvent : public QEvent, public QMimeSource
    {
    public:
        QDropEvent( const QPoint& pos, Type typ=Drop )
    	: QEvent(typ), p(pos),
    	  act(0), accpt(0), accptact(0), resv(0),
    	  d(0)
    	{}
        const QPoint &pos() const	{ return p; }
        bool isAccepted() const	{ return accpt || accptact; }
        void accept(bool y=TRUE)	{ accpt = y; }
        void ignore()		{ accpt = FALSE; }

        bool isActionAccepted() const { return accptact; }
        void acceptAction(bool y=TRUE) { accptact = y; }
        enum Action { Copy, Link, Move, Private, UserAction=100 };
        void setAction( Action a ) { act = (uint)a; }
        Action action() const { return Action(act); }

        QWidget* source() const;
        const char* format( int n = 0 ) const;
        QByteArray encodedData( const char* ) const;
        bool provides( const char* ) const;

        QByteArray data(const char* f) const { return encodedData(f); }

        void setPoint( const QPoint& np ) { p = np; }

    protected:
        QPoint p;
        uint act:8;
        uint accpt:1;
        uint accptact:1;
        uint resv:5;
        void * d;
    };

    class Q_EXPORT QDragMoveEvent : public QDropEvent
    {
    public:
        QDragMoveEvent( const QPoint& pos, Type typ=DragMove )
    	: QDropEvent(pos,typ),
    	  rect( pos, QSize( 1, 1 ) ) {}
        QRect answerRect() const { return rect; }
        void accept( bool y=TRUE ) { QDropEvent::accept(y); }
        void accept( const QRect & r) { accpt = TRUE; rect = r; }
        void ignore( const QRect & r) { accpt =FALSE; rect = r; }
        void ignore()		{ QDropEvent::ignore(); }

    protected:
        QRect rect;
    };

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

    /* An internal class */
    class Q_EXPORT QDragResponseEvent : public QEvent
    {
    public:
        QDragResponseEvent( bool accepted )
    	: QEvent(DragResponse), a(accepted) {}
        bool   dragAccepted() const	{ return a; }
    protected:
        bool a;
    };

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

    #endif // QT_NO_DRAGANDDROP

    class Q_EXPORT QChildEvent : public QEvent
    {
    public:
        QChildEvent( Type type, QObject *child )
    	: QEvent(type), c(child) {}
        QObject *child() const	{ return c; }
        bool inserted() const { return t == ChildInserted; }
        bool removed() const { return t == ChildRemoved; }
    protected:
        QObject *c;
    };

    class Q_EXPORT QCustomEvent : public QEvent
    {
    public:
        QCustomEvent( int type );
        QCustomEvent( Type type, void *data )
    	: QEvent(type), d(data) {};
        void       *data()	const	{ return d; }
        void	setData( void* data )	{ d = data; }
    private:
        void       *d;
    };

    #endif // QEVENT_H