/*
 *  CREATEBORDER.C
 */

#include "newlook.h"

struct Border *CreateBorder(x,y,w,h,pn)
SHORT x,y,w,h;
BOOL pn; /* FALSE=positive, TRUE=negative */
{
  struct Border *tl, *br;  /* TopLeft, BottomRight */
  SHORT *xy;

  ULONG UserHandle= SetNewLookHandle(PRIVATE_HANDLE);

  if(tl= (struct Border *)SmartAllocate(BORDERSIZE))
  {
    if(br= (struct Border *)SmartAllocate(BORDERSIZE))
    {
      if(xy= (SHORT *)SmartAllocate(2*BORDERXYSIZE))
      {
        --w;
        --h;

        /* shining edges */
        xy[0]= w-1;   xy[1]= 0;       /*  ++++++++++++  */
        xy[2]= 0;     xy[3]= 0;       /*  ++            */
        xy[4]= 0;     xy[5]= h;       /*  ++            */
        xy[6]= 1;     xy[7]= h-1;     /*  ++            */
        xy[8]= 1;     xy[9]= 1;       /*  +             */

        /* shadow edges */
        xy[10]= 1;    xy[11]= h;      /*              + */
        xy[12]= w;    xy[13]= h;      /*             ++ */
        xy[14]= w;    xy[15]= 0;      /*             ++ */
        xy[16]= w-1;  xy[17]= 1;      /*             ++ */
        xy[18]= w-1;  xy[19]= h-1;    /*   ++++++++++++ */

        /* top, left (shining) border */
        tl->LeftEdge   = x;
        tl->TopEdge    = y;
        tl->FrontPen   = pn ? 1:2;
        tl->BackPen    = 0;
        tl->DrawMode   = JAM1;
        tl->Count      = 5;
        tl->XY         = &xy[0];
        tl->NextBorder = br;

        /* bottom, right (shadow) border */
        br->LeftEdge   = x;
        br->TopEdge    = y;
        br->FrontPen   = pn ? 2:1;
        br->BackPen    = 0;
        br->DrawMode   = JAM1;
        br->Count      = 5;
        br->XY         = &xy[10];
        br->NextBorder = (struct Border *)NULL;

        MakePrivateHandlePublic(UserHandle);
        return(tl);
      }
    }
  }
  if(UserHandle != PRIVATE_HANDLE)
  { SmartFreeAll(PRIVATE_HANDLE);
    (void)SetNewLookHandle(UserHandle);
  }
  return (struct Border *)NULL;
}