#include <stdlib.h>

#include "lx.h"

#include "proto.h"
#include "internal.h"

typedef struct priv_GetPointerControl PRIV_GetPointerControl;

struct priv_GetPointerControl {
  LX_POINTERCONTROL *pc;
  } ;

static void done_GetPointerControl(LX_OP *op, const unsigned char *rep, void *pv)
{
 PRIV_GetPointerControl *p;
 unsigned int num;
 unsigned int den;
 unsigned int thresh;

 p = pv;
 do <"ret">
  { if (r_card32(rep+4) != 0)
     { lx__protoerr(op->conn,"GetPointerControl response length wrong (%u, expecting 0)",r_card32(rep+4));
       break <"ret">;
     }
    num = r_card16(rep+8);
    den = r_card16(rep+10);
    thresh = r_card16(rep+12);
    if (p->pc)
     { p->pc->flags = LX_POINTERCONTROL_ACCEL | LX_POINTERCONTROL_THRESH;
       p->pc->numerator = num;
       p->pc->denominator = den;
       p->pc->threshold = thresh;
     }
  } while (0);
 free(p);
}

LX_OP *lx_GetPointerControl(LX_CONN *xc, LX_POINTERCONTROL *pc)
{
 unsigned char req[4];
 PRIV_GetPointerControl *p;

 if (xc->flags & XCF_FAIL)
  { lx__bad_call(xc,"lx_GetPointerControl");
    return(0);
  }
 lx__nochain(xc);
 p = malloc(sizeof(PRIV_GetPointerControl));
 if (! p)
  { lx__nomem_fail(xc);
    return(0);
  }
 p->pc = pc;
 req[0] = XP_REQ_GetPointerControl;
 req[1] = 0;
 w_card16(&req[2],1);
 return(lx__expect_reply(xc,&req[0],-1,&done_GetPointerControl,p));
}