Qt Toolkit - qwindowsystem_qws.h include file

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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/src/kernel/qwindowsystem_qws.h   2.3.0   edited 2001-02-20 $
    **
    ** Definition of Qt/FB central server classes
    **
    ** Created : 991025
    **
    ** 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 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
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QTFB_H
    #define QTFB_H

    #ifndef QT_H
    #include <qwssocket_qws.h>
    #include <qmap.h>
    #include <qdatetime.h>
    #include <qlist.h>
    #include <qimage.h>

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

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

    class QWSInternalWindowInfo
    {

    public:

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

    };

    class QWSWindow
    {
        friend class QWSServer;
    public:
        QWSWindow(int i, QWSClient* client)
            : id(i), alloc_region_idx(-1), modified(FALSE), needAck(FALSE),
                onTop(FALSE), c(client), last_focus_time(0)
            { }
        ~QWSWindow();

        int winId() const { return id; }
        bool forClient(const QWSClient* cl) const { return cl==c; }
        QWSClient* client() const { return c; }
        QRegion allocation() const { return allocated_region; }
        bool hidden() const { return requested_region.isEmpty(); }
        bool partiallyObscured() const { return requested_region!=allocated_region; }
        bool fullyObscured() const { return allocated_region.isEmpty(); }

        void addAllocation( QWSRegionManager *, QRegion );
        void removeAllocation( QWSRegionManager *, 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 shuttingDown() { last_focus_time=0; }

    private:
        int id;
        int alloc_region_idx;
        bool modified;
        bool needAck;
        bool onTop;
        QWSClient* c;
        QRegion requested_region;
        QRegion allocated_region;
        QRegion exposed;
        int last_focus_time;
    };
    #ifndef QT_NO_SOUND
    class QWSSoundServer;
    #ifdef QT_USE_OLD_QWS_SOUND

    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 : private QWSServerSocket
    #else
    class QWSServer : private QObject
    #endif
    {
        friend class QCopChannel;
        friend class QWSMouseHandler;
        Q_OBJECT

    public:
        QWSServer( int flags = 0, QObject *parent=0, const char *name=0 );
        ~QWSServer();
    #ifndef QT_NO_QWS_MULTIPROCESS
        void newConnection( int socket );
    #endif
        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);

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

        static const KeyMap *keyMap();
    #ifndef QT_NO_QWS_KEYBOARD
        class KeyboardFilter
        {
        public:
            virtual bool filter(int unicode, int keycode, int modifiers, bool isPress,
                          bool autoRepeat)=0;
        };

        static void setKeyboardFilter( KeyboardFilter *f );
    #endif
        static void setDefaultMouse( const char * );
        static void setDefaultKeyboard( const char * );
        static void setMaxWindowRect(const QRect&);
        static void sendMaxWindowRectEvents();
        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

        static QList<QWSInternalWindowInfo> * windowList();

        void sendPropertyNotifyEvent( int property, int state );
    #ifndef QT_NO_QWS_PROPERTIES
        QWSPropertyManager *manager() {
            return &propertyManager;
        }
    #endif
    #ifndef QT_NO_COP
        static void sendQCopEvent( QWSClient *c, const QCString &ch,
                                   const QCString &msg, const QByteArray &data,
                                   bool response = FALSE );
    #endif
        QWSWindow *windowAt( const QPoint& pos );

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

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

        static void processEventQueue();
        static void setScreenSaverInterval(int);
        static bool screenSaverActive();
        static void screenSaverActivate(bool);

    public:
        static void move_region( const QWSRegionMoveCommand * );
        static void set_altitude( const QWSChangeAltitudeCommand * );
        static void request_region( int, QRegion );
        static void startup( int flags );
        static void closedown();

        static void emergency_cleanup();

        static QPoint mousePosition;

    private:
        static QWSServer *qwsServer; //there can be only one
        static QColor *bgColor;
        static QImage *bgImage;

    private:
        void invokeCreate( QWSCreateCommand *cmd, QWSClient *client );
        void invokeRegion( QWSRegionCommand *cmd, QWSClient *client );
        void invokeRegionMove( const QWSRegionMoveCommand *cmd, QWSClient *client );
        void invokeRegionDestroy( 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( 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 );
    #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

        QWSMouseHandler* newMouseHandler(const QString& spec);
    #ifndef QT_NO_QWS_KEYBOARD
        QWSKeyboardHandler* newKeyboardHandler(const QString& spec);
    #endif
        void openDisplay();
        void closeDisplay();

        void showCursor();
        void hideCursor();
        void initializeCursor();
        void paintServerRegion();
        void paintBackground( QRegion );
        void refreshBackground();

    private slots:
    #ifndef QT_NO_QWS_MULTIPROCESS
        void clientClosed();
        void doClient();
    #endif
        void setMouse(const QPoint& pos,int bstate);

        void screenSaverWake();
        void screenSaverSleep();

    private:
        void doClient( QWSClient * );
        typedef QMapIterator<int,QWSClient*> ClientIterator;
        typedef QMap<int,QWSClient*> ClientMap;

        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;
        QTimer* screensavertimer;
        int screensaverinterval;

        QWSWindow *focusw;
        QWSWindow *mouseGrabber;
        bool mouseGrabbing;
        int swidth, sheight, sdepth;
    #ifndef QT_NO_QWS_CURSOR
        bool cursorNeedsUpdate;
        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;
        QList<QWSMouseHandler> mousehandlers;
    #ifndef QT_NO_QWS_KEYBOARD
        QList<QWSKeyboardHandler> keyboardhandlers;
    #endif

        QList<QWSCommandStruct> commandQueue;
        QWSRegionManager *rgnMan;

        // Window management
        QList<QWSWindow> windows; // first=topmost
        QWSWindow* newWindow(int id, QWSClient* client);
        QWSWindow* findWindow(int windowid, QWSClient* client);
        void moveWindowRegion(QWSWindow*, int dx, int dy );
        void 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, QList<QWSClient> > channels;
    #endif
    };

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

    struct QWSMouseEvent;

    typedef QMap<int, QWSCursor*> QWSCursorMap;

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

        int socket() const;

        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();

        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;
    };

    #endif