xref: /xsrc/external/mit/xorg-server/dist/Xi/getdctl.c

/************************************************************

Copyright 1989, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
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in this Software without prior written authorization from The Open Group.

Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.

			All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Hewlett-Packard not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

********************************************************/

/********************************************************************
 *
 *  Get Device control attributes for an extension device.
 *
 */

#define	 NEED_EVENTS	/* for inputstr.h    */
#define	 NEED_REPLIES
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>	/* for inputstr.h    */
#include <X11/Xproto.h>	/* Request macro     */
#include "inputstr.h"	/* DeviceIntPtr      */
#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include "extnsionst.h"
#include "extinit.h"	/* LookupDeviceIntRec */
#include "exglobals.h"

#include "getdctl.h"

/***********************************************************************
 *
 * This procedure gets the control attributes for an extension device,
 * for clients on machines with a different byte ordering than the server.
 *
 */

int
SProcXGetDeviceControl(ClientPtr client)
{
    char n;

    REQUEST(xGetDeviceControlReq);
    swaps(&stuff->length, n);
    REQUEST_SIZE_MATCH(xGetDeviceControlReq);
    swaps(&stuff->control, n);
    return (ProcXGetDeviceControl(client));
}

/***********************************************************************
 *
 * This procedure copies DeviceResolution data, swapping if necessary.
 *
 */

static void
CopySwapDeviceResolution(ClientPtr client, ValuatorClassPtr v, char *buf,
			 int length)
{
    char n;
    AxisInfoPtr a;
    xDeviceResolutionState *r;
    int i, *iptr;

    r = (xDeviceResolutionState *) buf;
    r->control = DEVICE_RESOLUTION;
    r->length = length;
    r->num_valuators = v->numAxes;
    buf += sizeof(xDeviceResolutionState);
    iptr = (int *)buf;
    for (i = 0, a = v->axes; i < v->numAxes; i++, a++)
	*iptr++ = a->resolution;
    for (i = 0, a = v->axes; i < v->numAxes; i++, a++)
	*iptr++ = a->min_resolution;
    for (i = 0, a = v->axes; i < v->numAxes; i++, a++)
	*iptr++ = a->max_resolution;
    if (client->swapped) {
	swaps(&r->control, n);
	swaps(&r->length, n);
	swapl(&r->num_valuators, n);
	iptr = (int *)buf;
	for (i = 0; i < (3 * v->numAxes); i++, iptr++) {
	    swapl(iptr, n);
	}
    }
}

static void CopySwapDeviceAbsCalib (ClientPtr client, AbsoluteClassPtr dts,
                                char *buf)
{
    char n;
    xDeviceAbsCalibState *calib = (xDeviceAbsCalibState *) buf;

    calib->control = DEVICE_ABS_CALIB;
    calib->length = sizeof(calib);
    calib->min_x = dts->min_x;
    calib->max_x = dts->max_x;
    calib->min_y = dts->min_y;
    calib->max_y = dts->max_y;
    calib->flip_x = dts->flip_x;
    calib->flip_y = dts->flip_y;
    calib->rotation = dts->rotation;
    calib->button_threshold = dts->button_threshold;

    if (client->swapped) {
        swaps(&calib->control, n);
        swaps(&calib->length, n);
        swapl(&calib->min_x, n);
        swapl(&calib->max_x, n);
        swapl(&calib->min_y, n);
        swapl(&calib->max_y, n);
        swapl(&calib->flip_x, n);
        swapl(&calib->flip_y, n);
        swapl(&calib->rotation, n);
        swapl(&calib->button_threshold, n);
    }
}

static void CopySwapDeviceAbsArea (ClientPtr client, AbsoluteClassPtr dts,
                                char *buf)
{
    char n;
    xDeviceAbsAreaState *area = (xDeviceAbsAreaState *) buf;

    area->control = DEVICE_ABS_AREA;
    area->length = sizeof(area);
    area->offset_x = dts->offset_x;
    area->offset_y = dts->offset_y;
    area->width = dts->width;
    area->height = dts->height;
    area->screen = dts->screen;
    area->following = dts->following;

    if (client->swapped) {
        swaps(&area->control, n);
        swaps(&area->length, n);
        swapl(&area->offset_x, n);
        swapl(&area->offset_y, n);
        swapl(&area->width, n);
        swapl(&area->height, n);
        swapl(&area->screen, n);
        swapl(&area->following, n);
    }
}

static void CopySwapDeviceCore (ClientPtr client, DeviceIntPtr dev, char *buf)
{
    char n;
    xDeviceCoreState *c = (xDeviceCoreState *) buf;

    c->control = DEVICE_CORE;
    c->length = sizeof(c);
    c->status = dev->coreEvents;
    c->iscore = (dev == inputInfo.keyboard || dev == inputInfo.pointer);

    if (client->swapped) {
        swaps(&c->control, n);
        swaps(&c->length, n);
        swaps(&c->status, n);
    }
}

static void CopySwapDeviceEnable (ClientPtr client, DeviceIntPtr dev, char *buf)
{
    char n;
    xDeviceEnableState *e = (xDeviceEnableState *) buf;

    e->control = DEVICE_ENABLE;
    e->length = sizeof(e);
    e->enable = dev->enabled;

    if (client->swapped) {
        swaps(&e->control, n);
        swaps(&e->length, n);
        swaps(&e->enable, n);
    }
}

/***********************************************************************
 *
 * This procedure writes the reply for the xGetDeviceControl function,
 * if the client and server have a different byte ordering.
 *
 */

void
SRepXGetDeviceControl(ClientPtr client, int size, xGetDeviceControlReply * rep)
{
    char n;

    swaps(&rep->sequenceNumber, n);
    swapl(&rep->length, n);
    WriteToClient(client, size, (char *)rep);
}

/***********************************************************************
 *
 * Get the state of the specified device control.
 *
 */

int
ProcXGetDeviceControl(ClientPtr client)
{
    int total_length = 0;
    char *buf, *savbuf;
    DeviceIntPtr dev;
    xGetDeviceControlReply rep;

    REQUEST(xGetDeviceControlReq);
    REQUEST_SIZE_MATCH(xGetDeviceControlReq);

    dev = LookupDeviceIntRec(stuff->deviceid);
    if (dev == NULL) {
	SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0, BadDevice);
	return Success;
    }

    rep.repType = X_Reply;
    rep.RepType = X_GetDeviceControl;
    rep.length = 0;
    rep.sequenceNumber = client->sequence;

    switch (stuff->control) {
    case DEVICE_RESOLUTION:
	if (!dev->valuator) {
	    SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0,
			      BadMatch);
	    return Success;
	}
	total_length = sizeof(xDeviceResolutionState) +
	    (3 * sizeof(int) * dev->valuator->numAxes);
	break;
    case DEVICE_ABS_CALIB:
        if (!dev->absolute) {
            SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0,
                              BadMatch);
            return Success;
        }

        total_length = sizeof(xDeviceAbsCalibCtl);
        break;
    case DEVICE_ABS_AREA:
        if (!dev->absolute) {
            SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0,
                              BadMatch);
            return Success;
        }

        total_length = sizeof(xDeviceAbsAreaCtl);
        break;
    case DEVICE_CORE:
        total_length = sizeof(xDeviceCoreCtl);
        break;
    case DEVICE_ENABLE:
        total_length = sizeof(xDeviceEnableCtl);
        break;
    default:
	SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0, BadValue);
	return Success;
    }

    buf = (char *)xalloc(total_length);
    if (!buf) {
	SendErrorToClient(client, IReqCode, X_GetDeviceControl, 0, BadAlloc);
	return Success;
    }
    savbuf = buf;

    switch (stuff->control) {
    case DEVICE_RESOLUTION:
	CopySwapDeviceResolution(client, dev->valuator, buf, total_length);
	break;
    case DEVICE_ABS_CALIB:
        CopySwapDeviceAbsCalib(client, dev->absolute, buf);
        break;
    case DEVICE_ABS_AREA:
        CopySwapDeviceAbsArea(client, dev->absolute, buf);
        break;
    case DEVICE_CORE:
        CopySwapDeviceCore(client, dev, buf);
        break;
    case DEVICE_ENABLE:
        CopySwapDeviceEnable(client, dev, buf);
        break;
    default:
	break;
    }

    rep.length = (total_length + 3) >> 2;
    WriteReplyToClient(client, sizeof(xGetDeviceControlReply), &rep);
    WriteToClient(client, total_length, savbuf);
    xfree(savbuf);
    return Success;
}