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# qwindowsystem_qws.h

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

    /****************************************************************************
    ** $Id: qt/qwindowsystem_qws.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of Qt/FB central server classes
    **
    ** Created : 991025
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** 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 for Qt/Embedded may use this file in accordance with the
    ** Qt Embedded 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/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
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    **********************************************************************/

    #ifndef QWINDOWSYSTEM_QWS_H
    #define QWINDOWSYSTEM_QWS_H

    #ifndef QT_H
    #include "qwssocket_qws.h"
    #include "qmap.h"
    #include "qdatetime.h"
    #include "qptrlist.h"
    #include "qimage.h"

    #include "qwsproperty_qws.h"
    #include "qwscommand_qws.h"
    #include "qwsevent_qws.h"
    #endif // QT_H

    #include "qkbd_qws.h"

    struct SWCursorData;
    class QWSCursor;
    class QWSClient;
    class QWSRegionManager;
    class QGfx;
    class QWSServerData;

    class QWSInternalWindowInfo
    {

    public:

        int winid;
        unsigned int clientid;
        QString name;   // Corresponds to QObject name of top-level widget

    };

    struct QWSWindowData;

    class QWSScreenSaver
    {
    public:
        virtual ~QWSScreenSaver();
        virtual void restore()=0;
        virtual bool save(int level)=0;
    };

    class QWSWindow
    {
        friend class QWSServer;
    public:
        QWSWindow(int i, QWSClient* client);
        ~QWSWindow();

        int winId() const { return id; }
        const QString &name() const { return rgnName; }
        const QString &caption() const { return rgnCaption; }
        QWSClient* client() const { return c; }
        QRegion requested() const { return requested_region; }
        QRegion allocation() const { return allocated_region; }
        bool isVisible() const { return !requested_region.isEmpty(); }
        bool isPartiallyObscured() const { return requested_region!=allocated_region; }
        bool isFullyObscured() const { return allocated_region.isEmpty(); }

        void raise();
        void lower();
        void show();
        void hide();
        void setActiveWindow();

    private:
        bool hidden() const { return requested_region.isEmpty(); }
        bool forClient(const QWSClient* cl) const { return cl==c; }

        void setName( const QString &n );
        void setCaption( const QString &c );

        void addAllocation( QWSRegionManager *, const QRegion & );
        void removeAllocation( QWSRegionManager *, const QRegion & );

        int  allocationIndex() const { return alloc_region_idx; }
        void setAllocationIndex( int i ) { alloc_region_idx = i; modified = TRUE; }
        void updateAllocation();

        void setNeedAck( bool n ) { needAck = n; }

        void focus(bool get);
        int focusPriority() const { return last_focus_time; }
        void operation( QWSWindowOperationEvent::Operation o );
        void shuttingDown() { last_focus_time=0; }

    private:
        int id;
        QString rgnName;
        QString rgnCaption;
        int alloc_region_idx;
        bool modified;
        bool needAck;
        bool onTop;
        QWSClient* c;
        QRegion requested_region;
        QRegion allocated_region;
        QRegion exposed;
        int last_focus_time;
        QWSWindowData *d;
    };

    #ifndef QT_NO_SOUND
    class QWSSoundServer;
    #ifdef QT_USE_OLD_QWS_SOUND
    class QWSSoundServerData;

    class QWSSoundServer : public QObject {
        Q_OBJECT
    public:
        QWSSoundServer(QObject* parent);
        ~QWSSoundServer();
        void playFile(const QString& filename);
    private slots:
        void feedDevice(int fd);
    private:
        QWSSoundServerData* d;
    };
    #endif
    #endif

    /*********************************************************************
     *
     * Class: QWSServer
     *
     *********************************************************************/

    class QWSMouseHandler;
    struct QWSCommandStruct;

    #ifndef QT_NO_QWS_MULTIPROCESS
    class QWSServer : public QWSServerSocket
    #else
    class QWSServer : public QObject
    #endif
    {
        friend class QCopChannel;
        friend class QWSMouseHandler;
        friend class QWSWindow;
        friend class QWSDisplay;
        friend class QWSInputMethod;
        Q_OBJECT

    public:
        QWSServer( int flags = 0, QObject *parent=0, const char *name=0 );
        ~QWSServer();
        enum ServerFlags { DisableKeyboard = 0x01,
    		       DisableMouse = 0x02 };

        enum GUIMode { NoGui = FALSE, NormalGUI = TRUE, Server };

        static void sendKeyEvent(int unicode, int keycode, int modifiers, bool isPress,
    			     bool autoRepeat);
        static void processKeyEvent(int unicode, int keycode, int modifiers, bool isPress,
    				bool autoRepeat);

    #ifndef QT_NO_QWS_IM
        enum IMState { IMStart, IMCompose, IMEnd };

        void sendIMEvent( IMState state, const QString& txt, int cpos, int selLen );
    #endif

    #ifndef QT_NO_QWS_KEYBOARD
        typedef struct KeyMap {
    	int  key_code;
    	ushort unicode;
    	ushort shift_unicode;
    	ushort ctrl_unicode;
        };

        typedef struct KeyOverride {
    	ushort scan_code;
    	KeyMap map;
        };

        static const KeyMap *keyMap();

        static void setOverrideKeys( const KeyOverride* );

        class KeyboardFilter
        {
        public:
    	virtual bool filter(int unicode, int keycode, int modifiers,
    			    bool isPress, bool autoRepeat)=0;
        };

        static void setKeyboardFilter( KeyboardFilter *f );
    #endif
    #ifndef QT_NO_QWS_IM
        static void setCurrentInputMethod( QWSInputMethod *im );
        static void resetInputMethod();
        static void setMicroFocus( int x, int y );
    #endif

        static void setDefaultMouse( const char * );
        static void setDefaultKeyboard( const char * );
        static void setMaxWindowRect(const QRect&);
        static void sendMouseEvent(const QPoint& pos, int state);

        static void setDesktopBackground( const QImage &img );
        static void setDesktopBackground( const QColor & );
        static QWSMouseHandler *mouseHandler();
        static void setMouseHandler(QWSMouseHandler*);
    #ifndef QT_NO_QWS_KEYBOARD
        static QWSKeyboardHandler* keyboardHandler();
        static void setKeyboardHandler(QWSKeyboardHandler* kh);
    #endif
        QWSWindow *windowAt( const QPoint& pos );

        // For debugging only at this time
        const QPtrList<QWSWindow> &clientWindows() { return windows; }

        void openMouse();
        void closeMouse();
    #ifndef QT_NO_QWS_KEYBOARD
        void openKeyboard();
        void closeKeyboard();
    #endif

        static void setScreenSaver(QWSScreenSaver*);
        static void setScreenSaverIntervals(int* ms);
        static void setScreenSaverInterval(int);
        static bool screenSaverActive();
        static void screenSaverActivate(bool);

        // the following are internal.
        void refresh();
        void refresh(QRegion &);

        void enablePainting(bool);
        static void processEventQueue();
        static QPtrList<QWSInternalWindowInfo> * windowList();

        void sendPropertyNotifyEvent( int property, int state );
    #ifndef QT_NO_QWS_PROPERTIES
        QWSPropertyManager *manager() {
    	return &propertyManager;
        }
    #endif

        static QPoint mousePosition;

        static void startup( int flags );
        static void closedown();

        static void beginDisplayReconfigure();
        static void endDisplayReconfigure();

    #ifndef QT_NO_QWS_CURSOR
        static void setCursorVisible( bool );
        static bool isCursorVisible();
    #endif

        enum WindowEvent { Create=0x0001, Destroy=0x0002, Hide=0x0004, Show=0x0008,
    		       Raise=0x0010, Lower=0x0020, Geometry=0x0040, Active = 0x0080,
    		       Name=0x0100 };

    signals:
        void windowEvent( QWSWindow *w, QWSServer::WindowEvent e );

    #ifndef QT_NO_COP
        void newChannel( const QString& channel);
        void removedChannel(const QString& channel);

    #endif
    private:
    #ifndef QT_NO_COP
        static void sendQCopEvent( QWSClient *c, const QCString &ch,
    			       const QCString &msg, const QByteArray &data,
    			       bool response = FALSE );
    #endif
        void move_region( const QWSRegionMoveCommand * );
        void set_altitude( const QWSChangeAltitudeCommand * );
        void request_focus( const QWSRequestFocusCommand * );
        void request_region( int, QRegion );
        void destroy_region( const QWSRegionDestroyCommand * );
        void name_region( const QWSRegionNameCommand * );
        void set_identity( const QWSIdentifyCommand * );
    #ifndef QT_NO_QWS_IM
        void set_micro_focus( const QWSSetMicroFocusCommand * );
        void reset_im( const QWSResetIMCommand * );
        static void sendKeyEventUnfiltered(int unicode, int keycode,
    				       int modifiers, bool isPress,
    				       bool autoRepeat);

    #endif
        static void emergency_cleanup();

        static QColor *bgColor;
        static QImage *bgImage;

        void sendMaxWindowRectEvents();
    #ifndef QT_NO_QWS_MULTIPROCESS
        void newConnection( int socket );
    #endif
        void invokeIdentify( const QWSIdentifyCommand *cmd, QWSClient *client );
        void invokeCreate( QWSCreateCommand *cmd, QWSClient *client );
        void invokeRegionName( const QWSRegionNameCommand *cmd, QWSClient *client );
        void invokeRegion( QWSRegionCommand *cmd, QWSClient *client );
        void invokeRegionMove( const QWSRegionMoveCommand *cmd, QWSClient *client );
        void invokeRegionDestroy( const QWSRegionDestroyCommand *cmd, QWSClient *client );
        void invokeSetAltitude( const QWSChangeAltitudeCommand *cmd, QWSClient *client );
    #ifndef QT_NO_QWS_PROPERTIES
        void invokeAddProperty( QWSAddPropertyCommand *cmd );
        void invokeSetProperty( QWSSetPropertyCommand *cmd );
        void invokeRemoveProperty( QWSRemovePropertyCommand *cmd );
        void invokeGetProperty( QWSGetPropertyCommand *cmd, QWSClient *client );
    #endif //QT_NO_QWS_PROPERTIES
        void invokeSetSelectionOwner( QWSSetSelectionOwnerCommand *cmd );
        void invokeConvertSelection( QWSConvertSelectionCommand *cmd );
        void invokeSetFocus( const QWSRequestFocusCommand *cmd, QWSClient *client );

        void initIO();
        void setFocus( QWSWindow*, bool gain );
    #ifndef QT_NO_QWS_CURSOR
        void invokeDefineCursor( QWSDefineCursorCommand *cmd, QWSClient *client );
        void invokeSelectCursor( QWSSelectCursorCommand *cmd, QWSClient *client );
    #endif
        void invokeGrabMouse( QWSGrabMouseCommand *cmd, QWSClient *client );
        void invokeGrabKeyboard( QWSGrabKeyboardCommand *cmd, QWSClient *client );
    #ifndef QT_NO_SOUND
        void invokePlaySound( QWSPlaySoundCommand *cmd, QWSClient *client );
    #endif
    #ifndef QT_NO_COP
        void invokeRegisterChannel( QWSQCopRegisterChannelCommand *cmd,
    				QWSClient *client );
        void invokeQCopSend( QWSQCopSendCommand *cmd, QWSClient *client );
    #endif
        void invokeRepaintRegion( QWSRepaintRegionCommand *cmd,
    			      QWSClient *client );
    #ifndef QT_NO_QWS_IM
            void invokeSetMicroFocus( const QWSSetMicroFocusCommand *cmd,
                                    QWSClient *client );
            void invokeResetIM( const QWSResetIMCommand *cmd,
                                    QWSClient *client );
    #endif

        QWSMouseHandler* newMouseHandler(const QString& spec);
        void openDisplay();
        void closeDisplay();

        void showCursor();
        void hideCursor();
        void initializeCursor();
        void paintServerRegion();
        void paintBackground( const QRegion & );
        void clearRegion( const QRegion &r, const QColor &c );
        void refreshBackground();
        void resetGfx();

    private slots:
    #ifndef QT_NO_QWS_MULTIPROCESS
        void clientClosed();
        void doClient();
        void deleteWindowsLater();
    #endif

        void screenSaverWake();
        void screenSaverSleep();
        void screenSaverTimeout();

    private:
        void disconnectClient( QWSClient * );
        void screenSave(int level);
        void doClient( QWSClient * );
        typedef QMapIterator<int,QWSClient*> ClientIterator;
        typedef QMap<int,QWSClient*> ClientMap;
        void releaseMouse(QWSWindow* w);
        void releaseKeyboard(QWSWindow* w);
        void updateClientCursorPos();

        uchar* sharedram;
        int ramlen;

        QGfx *gfx;

        ClientMap client;
    #ifndef QT_NO_QWS_PROPERTIES
        QWSPropertyManager propertyManager;
    #endif
        struct SelectionOwner {
    	int windowid;
    	struct Time {
    	    void set( int h, int m, int s, int s2 ) {
    		hour = h; minute = m; sec = s; ms = s2;
    	    }
    	    int hour, minute, sec, ms;
    	} time;
        } selectionOwner;
        QTime timer;
        QWSServerData* d;
        int* screensaverinterval;

        QWSWindow *focusw;
        QWSWindow *mouseGrabber;
        bool mouseGrabbing;
        int swidth, sheight, sdepth;
    #ifndef QT_NO_QWS_CURSOR
        bool haveviscurs;
        QWSCursor *cursor;	    // cursor currently shown
        QWSCursor *nextCursor;  // cursor to show once grabbing is off
    #endif
        QRegion screenRegion;   // the entire display region
        QRegion serverRegion;
        QRegion dirtyBackground;
        bool disablePainting;
        QPtrList<QWSMouseHandler> mousehandlers;
    #ifndef QT_NO_QWS_KEYBOARD
        QPtrList<QWSKeyboardHandler> keyboardhandlers;
    #endif

        QPtrList<QWSCommandStruct> commandQueue;
        QWSRegionManager *rgnMan;

        // Window management
        QPtrList<QWSWindow> windows; // first=topmost
        QWSWindow* newWindow(int id, QWSClient* client);
        QWSWindow* findWindow(int windowid, QWSClient* client);
        void moveWindowRegion(QWSWindow*, int dx, int dy );
        QRegion setWindowRegion(QWSWindow*, QRegion r );
        void raiseWindow( QWSWindow *, int = 0);
        void lowerWindow( QWSWindow *, int = -1);
        void exposeRegion( QRegion , int index = 0 );
        void notifyModified( QWSWindow *active = 0 );
        void syncRegions( QWSWindow *active = 0 );

        void setCursor(QWSCursor *curs);

        // multimedia
    #ifndef QT_NO_SOUND
        QWSSoundServer *soundserver;
    #endif
    #ifndef QT_NO_COP
        QMap<QString, QPtrList<QWSClient> > channels;
    #endif
    #ifndef QT_NO_QWS_IM
        bool microF;
        int microX;
        int microY;
    #endif
    };

    extern QWSServer *qwsServer; //there can be only one

    #ifndef QT_NO_QWS_IM
        class QWSInputMethod
        {
        public:
    	QWSInputMethod();
    	virtual ~QWSInputMethod();
    	virtual bool filter(int unicode, int keycode, int modifiers,
    			    bool isPress, bool autoRepeat)=0;
    	virtual void reset();
    	virtual void setMicroFocus( int x, int y );
    	virtual void setFont( const QFont& );
        protected:
    	void sendIMEvent( QWSServer::IMState, const QString& txt, int cpos, int selLen = 0 );
    	//void sendKeyEvent( int unicode, int keycode, int modifiers,
    	//		    bool isPress, bool autoRepeat);
        };

    inline void QWSInputMethod::sendIMEvent( QWSServer::IMState state, const QString &txt, int cpos, int selLen )
    {
        qwsServer->sendIMEvent( state, txt, cpos, selLen );

    }

    #endif

    /*********************************************************************
     *
     * Class: QWSClient
     *
     *********************************************************************/

    struct QWSMouseEvent;

    typedef QMap<int, QWSCursor*> QWSCursorMap;

    class QWSClient : public QObject
    {
        Q_OBJECT
    public:
        QWSClient( QObject* parent, int socket, int id );
        ~QWSClient();

        int socket() const;

        void setIdentity(const QString&);
        QString identity() const { return id; }

        void sendEvent( QWSEvent* event );
        void sendConnectedEvent( const char *display_spec );
        void sendMaxWindowRectEvent();
        void sendRegionModifyEvent( int winid, QRegion exposed, bool ack );
        void sendFocusEvent( int winid, bool get );
        void sendPropertyNotifyEvent( int property, int state );
        void sendPropertyReplyEvent( int property, int len, char *data );
        void sendSelectionClearEvent( int windowid );
        void sendSelectionRequestEvent( QWSConvertSelectionCommand *cmd, int windowid );
        QWSCommand* readMoreCommand();

        int clientId() const { return cid; }

        QWSCursorMap cursors;	// cursors defined by this client
    signals:
        void connectionClosed();
        void readyRead();
    private slots:
        void closeHandler();
        void errorHandler( int );
    private:
        int s; // XXX csocket->d->socket->socket() is this value
    #ifndef QT_NO_QWS_MULTIPROCESS
        QWSSocket *csocket;
    #endif
        QWSCommand* command;
        uint isClosed : 1;
        QString id;
        int cid;
    };

    #endif // QWINDOWSYSTEM_QWS_H