dist/Xi/stubs.c

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/*
 * stubs.c -- stub routines for the X server side of the XINPUT
 * extension.  This file is mainly to be used only as documentation.
 * There is not much code here, and you can't get a working XINPUT
 * server just using this.
 * The Xvfb server uses this file so it will compile with the same
 * object files as the real X server for a platform that has XINPUT.
 * Xnest could do the same thing.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/Xproto.h>
#include "inputstr.h"
#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include "XIstubs.h"
#include "xace.h"

/***********************************************************************
 *
 * Caller:	ProcXCloseDevice
 *
 * Take care of implementation-dependent details of closing a device.
 * Some implementations may actually close the device, others may just
 * remove this clients interest in that device.
 *
 * The default implementation is to do nothing (assume all input devices
 * are initialized during X server initialization and kept open).
 *
 */

void
CloseInputDevice(DeviceIntPtr d, ClientPtr client)
{
}

/***********************************************************************
 *
 * Caller:	ProcXListInputDevices
 *
 * This is the implementation-dependent routine to initialize an input
 * device to the point that information about it can be listed.
 * Some implementations open all input devices when the server is first
 * initialized, and never close them.  Other implementations open only
 * the X pointer and keyboard devices during server initialization,
 * and only open other input devices when some client makes an
 * XOpenDevice request.  If some other process has the device open, the
 * server may not be able to get information about the device to list it.
 *
 * This procedure should be used by implementations that do not initialize
 * all input devices at server startup.  It should do device-dependent
 * initialization for any devices not previously initialized, and call
 * AddInputDevice for each of those devices so that a DeviceIntRec will be
 * created for them.
 *
 * The default implementation is to do nothing (assume all input devices
 * are initialized during X server initialization and kept open).
 * The commented-out sample code shows what you might do if you don't want
 * the default.
 *
 */

void
AddOtherInputDevices(void)
{
    /**********************************************************************
     for each uninitialized device, do something like:

    DeviceIntPtr dev;
    DeviceProc deviceProc;
    pointer private;

    dev = (DeviceIntPtr) AddInputDevice(deviceProc, TRUE);
    dev->public.devicePrivate = private;
    RegisterOtherDevice(dev);
    dev->inited = ((*dev->deviceProc)(dev, DEVICE_INIT) == Success);
    ************************************************************************/

}

/***********************************************************************
 *
 * Caller:	ProcXOpenDevice
 *
 * This is the implementation-dependent routine to open an input device.
 * Some implementations open all input devices when the server is first
 * initialized, and never close them.  Other implementations open only
 * the X pointer and keyboard devices during server initialization,
 * and only open other input devices when some client makes an
 * XOpenDevice request.  This entry point is for the latter type of
 * implementation.
 *
 * If the physical device is not already open, do it here.  In this case,
 * you need to keep track of the fact that one or more clients has the
 * device open, and physically close it when the last client that has
 * it open does an XCloseDevice.
 *
 * The default implementation is to do nothing (assume all input devices
 * are opened during X server initialization and kept open).
 *
 */

void
OpenInputDevice(DeviceIntPtr dev, ClientPtr client, int *status)
{
    *status = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixUseAccess);
}

/****************************************************************************
 *
 * Caller:	ProcXSetDeviceMode
 *
 * Change the mode of an extension device.
 * This function is used to change the mode of a device from reporting
 * relative motion to reporting absolute positional information, and
 * vice versa.
 * The default implementation below is that no such devices are supported.
 *
 */

int
SetDeviceMode(ClientPtr client, DeviceIntPtr dev, int mode)
{
    return BadMatch;
}

/****************************************************************************
 *
 * Caller:	ProcXSetDeviceValuators
 *
 * Set the value of valuators on an extension input device.
 * This function is used to set the initial value of valuators on
 * those input devices that are capable of reporting either relative
 * motion or an absolute position, and allow an initial position to be set.
 * The default implementation below is that no such devices are supported.
 *
 */

int
SetDeviceValuators(ClientPtr client, DeviceIntPtr dev,
		   int *valuators, int first_valuator, int num_valuators)
{
    return BadMatch;
}

/****************************************************************************
 *
 * Caller:	ProcXChangeDeviceControl
 *
 * Change the specified device controls on an extension input device.
 *
 */

int
ChangeDeviceControl(ClientPtr client, DeviceIntPtr dev,
		    xDeviceCtl * control)
{
    switch (control->control) {
    case DEVICE_RESOLUTION:
	return BadMatch;
    case DEVICE_ABS_CALIB:
    case DEVICE_ABS_AREA:
        return BadMatch;
    case DEVICE_CORE:
        return BadMatch;
    default:
	return BadMatch;
    }
}


/****************************************************************************
 *
 * Caller: configAddDevice (and others)
 *
 * Add a new device with the specified options.
 *
 */
int
NewInputDeviceRequest(InputOption *options, InputAttributes *attrs,
                      DeviceIntPtr *pdev)
{
    return BadValue;
}

/****************************************************************************
 *
 * Caller: configRemoveDevice (and others)
 *
 * Remove the specified device previously added.
 *
 */
void
DeleteInputDeviceRequest(DeviceIntPtr dev)
{
}