xref: /xsrc/external/mit/libXi/dist/src/XChgDCtl.c

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

Copyright 1989, 1998  The Open Group

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

			All Rights Reserved

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

/***********************************************************************
 *
 * XChangeDeviceControl - Change the control attributes of an extension
 * input device.
 *
 */

#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include <X11/Xlibint.h>
#include <X11/extensions/XInput.h>
#include <X11/extensions/extutil.h>
#include "XIint.h"

int
XChangeDeviceControl(
    register Display	*dpy,
    XDevice		*dev,
    int			 control,
    XDeviceControl	*d)
{
    int length;
    xChangeDeviceControlReq *req;
    xChangeDeviceControlReply rep;
    XExtDisplayInfo *info = XInput_find_display(dpy);

    LockDisplay(dpy);
    if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1)
	return (NoSuchExtension);

    GetReq(ChangeDeviceControl, req);
    req->reqType = info->codes->major_opcode;
    req->ReqType = X_ChangeDeviceControl;
    req->deviceid = dev->device_id;
    req->control = control;

    switch (control) {
    case DEVICE_RESOLUTION:
    {
	XDeviceResolutionControl *R;
	xDeviceResolutionCtl r;

	R = (XDeviceResolutionControl *) d;
	r.control = DEVICE_RESOLUTION;
	r.length = sizeof(xDeviceResolutionCtl) +
        R->num_valuators * sizeof(int);
	r.first_valuator = R->first_valuator;
	r.num_valuators = R->num_valuators;
	req->length += ((unsigned)(r.length + 3) >> 2);
	length = sizeof(xDeviceResolutionCtl);
	Data(dpy, (char *)&r, length);
	length = r.num_valuators * sizeof(int);
	Data(dpy, (char *)R->resolutions, length);
	if (!_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
	    UnlockDisplay(dpy);
	    SyncHandle();
	    return (NoSuchExtension);
	} else {
            UnlockDisplay(dpy);
            SyncHandle();
	    return (rep.status);
        }
    }
    case DEVICE_ABS_CALIB:
    {
        XDeviceAbsCalibControl *C = (XDeviceAbsCalibControl *) d;
        xDeviceAbsCalibCtl c;

        c.control = DEVICE_ABS_CALIB;
        c.length = sizeof(c);
        c.min_x = C->min_x;
        c.max_x = C->max_x;
        c.min_y = C->min_y;
        c.max_y = C->max_y;
        c.flip_x = C->flip_x;
        c.flip_y = C->flip_y;
        c.rotation = C->rotation;
        c.button_threshold = C->button_threshold;

        req->length += (sizeof(c) + 3) >> 2;
        Data(dpy, (char *) &c, sizeof(c));

        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return NoSuchExtension;
        }
        else {
            UnlockDisplay(dpy);
            SyncHandle();
            return rep.status;
        }
    }
    case DEVICE_ABS_AREA:
    {
        XDeviceAbsAreaControl *A = (XDeviceAbsAreaControl *) d;
        xDeviceAbsAreaCtl a;

        a.control = DEVICE_ABS_AREA;
        a.length = sizeof(a);
        a.offset_x = A->offset_x;
        a.offset_y = A->offset_y;
        a.width = A->width;
        a.height = A->height;
        a.screen = A->screen;
        a.following = A->following;

        req->length += (sizeof(a) + 3) >> 2;
        Data(dpy, (char *) &a, sizeof(a));

        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return NoSuchExtension;
        }
        else {
            UnlockDisplay(dpy);
            SyncHandle();
            return rep.status;
        }
    }
    case DEVICE_CORE:
    {
        XDeviceCoreControl *C = (XDeviceCoreControl *) d;
        xDeviceCoreCtl c;

        c.control = DEVICE_CORE;
        c.length = sizeof(c);
        c.status = C->status;

        req->length += (sizeof(c) + 3) >> 2;
        Data (dpy, (char *) &c, sizeof(c));

        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return NoSuchExtension;
        }
        else {
            UnlockDisplay(dpy);
            SyncHandle();
            return rep.status;
        }
    }
    case DEVICE_ENABLE:
    {
        XDeviceEnableControl *E = (XDeviceEnableControl *) d;
        xDeviceEnableCtl e;

        e.control = DEVICE_ENABLE;
        e.length = sizeof(e);
        e.enable = E->enable;

        req->length += (sizeof(e) + 3) >> 2;
        Data (dpy, (char *) &e, sizeof(e));

        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return NoSuchExtension;
        }
        else {
            UnlockDisplay(dpy);
            SyncHandle();
            return rep.status;
        }
    }
    default:
    {
	xDeviceCtl u;

	u.control = d->control;
	u.length = d->length - sizeof(int);
	length = ((unsigned)(u.length + 3) >> 2);
	req->length += length;
	length <<= 2;
	Data(dpy, (char *)&u, length);
    }
    }

    UnlockDisplay(dpy);
    SyncHandle();
    return (Success);
}