#include <stdlib.h>
#include <strings.h>

#include "lx.h"

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

typedef struct priv_QueryBestSize PRIV_QueryBestSize;

struct priv_QueryBestSize {
  int *wp;
  int *hp;
  } ;

static void done_QueryBestSize(LX_OP *op, const unsigned char *rep, void *pv)
{
 PRIV_QueryBestSize *p;

 p = pv;
 do <"ret">
  { if (r_card32(rep+4) != 0)
     { lx__protoerr(op->conn,"QueryBestSize response length wrong (%u, expecting 0)",r_card32(rep+4));
       break <"ret">;
     }
    if (p->wp) *p->wp = r_card16(rep+8);
    if (p->hp) *p->hp = r_card16(rep+10);
  } while (0);
 free(p);
}

LX_OP *lx_QueryBestSize(LX_CONN *xc, LX_XID drawable, LX_SIZECLASS class, int w, int h, int *wp, int *hp)
{
 unsigned char req[12];
 PRIV_QueryBestSize *p;
 int protoclass;

 if ((xc->flags & XCF_FAIL) || (w < 0) || (w > 65535) || (h < 0) || (h > 65535))
  { lx__bad_call(xc,"lx_QueryBestSize");
    return(0);
  }
 lx__nochain(xc);
 protoclass = lx__sizeclass_to_proto(class);
 if (protoclass < 0)
  { lx__bad_call(xc,"lx_QueryBestSize");
    return(0);
  }
 p = malloc(sizeof(PRIV_QueryBestSize));
 if (! p)
  { lx__nomem_fail(xc);
    return(0);
  }
 p->wp = wp;
 p->hp = hp;
 req[0] = XP_REQ_QueryBestSize;
 req[1] = protoclass;
 w_card16(&req[2],3);
 w_card32(&req[4],drawable);
 w_card16(&req[8],w);
 w_card16(&req[10],h);
 return(lx__expect_reply(xc,&req[0],-1,&done_QueryBestSize,p));
}