Subversion Repositories openrisc

//==========================================================================

//

//      mou_vnc_ecos.c

//

//

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

// Software Foundation; either version 2 or (at your option) any later      

// version.                                                                 

//

// eCos is distributed in the hope that it will be useful, but WITHOUT      

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

//

// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

// the GNU General Public License. However the source code for this file    

// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    Chris Garry <cgarry@sweeneydesign.co.uk>

// Contributors:

// Date:         2003-08-22

// Purpose:

// Description:  Microwindows mouse driver for VNC server on eCos

//

//####DESCRIPTIONEND####

//

//========================================================================*/

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <errno.h>

#include <fcntl.h>

#include <math.h>

#include <sys/ioctl.h>

#include <pkgconf/vnc_server.h>  /* CYGDAT_VNC_SERVER_MOUSE_NAME */

#include "device.h"

static int vnc_Open(MOUSEDEVICE *pmd);

static void vnc_Close(void);

static int vnc_GetButtonInfo(void);

static void vnc_GetDefaultAccel(int *pscale,int *pthresh);

static int vnc_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb);

static int mouse_fd = -1;

/* Hack extern to used when hiding the mouse cursor

 * There needs to be a better way to do this

*/

extern SCREENDEVICE scrdev;

MOUSEDEVICE mousedev = {

    vnc_Open,

    vnc_Close,

    vnc_GetButtonInfo,

    vnc_GetDefaultAccel,

    vnc_Read,

    NULL

};

static int vnc_Open(MOUSEDEVICE *pmd)

{

    mouse_fd = open(CYGDAT_VNC_SERVER_MOUSE_NAME, O_RDONLY | O_NONBLOCK);

    if (mouse_fd < 0)

    {

        EPRINTF("Error %d opening VNC mouse\n", errno);

        return -1;

    }

//    GdHideCursor(&scrdev);

    return mouse_fd;

}

static void vnc_Close(void)

{

    /* Close the mouse device. */

    if (mouse_fd >= 0)

    {

        close(mouse_fd);

    }

    mouse_fd = -1;

}

static int vnc_GetButtonInfo(void)

{

        /* Get mouse buttons supported */

    return (MWBUTTON_L + MWBUTTON_R);

}

static void vnc_GetDefaultAccel(int *pscale,int *pthresh)

{

        /*

         * Get default mouse acceleration settings

         * Just return something inconspicuous for now.

         */

//     diag_printf("Mouse: vnc_GetDefaultAccel()\n");

        *pscale = 3;

        *pthresh = 5;

}

static int vnc_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb)

{

        /* Read a mouse event */

    cyg_uint8 data[8];

    int bytes_read;

    bytes_read = read(mouse_fd, data, 8);

    if (bytes_read != sizeof(data))

    {

        if (errno == EINTR || errno == EAGAIN)

        {

            return 0;

        }

        /*

         * kernel driver bug: select returns read available,

         * but read returns -1

         * we return 0 here to avoid GsError above

         */

        /*return -1;*/

        return 0;

    }

    *px = data[2]*256 + data[3];

    *py = data[4]*256 + data[5];

    *pb = 0;

    if (data[1] & 0x01)

    {

        *pb += MWBUTTON_L;

    }

    if (data[1] & 0x04)

    {

        *pb += MWBUTTON_R;

    }

    *pz = 0;

    return 2;

#if 0

    if(! *pb )

    {

        return 1;         /* Don't have button data */

    }

    else

    {

        return 2;         /* Have full set of data */

    }

#endif

}