// ST_lib.c : the status bar widget code

#include <ctype.h>
#include "doomdef.h"
#include "st_stuff.h"
#include "st_lib.h"
#include "r_local.h"

extern boolean automapactive; // in AM_map.c
patch_t *sttminus;

void STlib_init(void)
{
  sttminus = (patch_t *) W_CacheLumpName("STTMINUS", PU_STATIC);
}

void STlib_initNum(st_number_t *n, int x, int y, patch_t **pl, int *num,
  boolean *on, int width)
{
  n->x = x;
  n->y = y;
  n->oldnum = 0;
  n->width = width;
  n->num = num;
  n->on = on;
  n->p = pl;
}

// A fairly efficient way to draw a number based on differences from the
// old number.

void STlib_drawNum(st_number_t *n, boolean refresh)
{

  int numdigits = n->width;
  int num = *n->num;
  int w = SHORT(n->p[0]->width), h = SHORT(n->p[0]->height);
  int x = n->x;
  int neg;

  n->oldnum = *n->num;

  neg = num < 0;
  if (neg)
  {
    if (numdigits == 2 && num < -9) num = -9;
    else if (numdigits == 3 && num < -99) num = -99;
    num = -num;
  }

  // clear the area
  x = n->x - numdigits*w;
  if (n->y - ST_Y < 0) I_Error("drawNum: n->y - ST_Y < 0");
  V_CopyRect(x, n->y - ST_Y, BG, w*numdigits, h, x, n->y, FG);

  // if non-number, don't draw it
  if (num == 1994) return;

  x = n->x;

  // in the special case of 0, you draw 0
  if (!num)
    V_DrawPatch(x - w, n->y, FG, n->p[ 0 ]);

  // draw the new number
  while (num && numdigits--)
  {
    x -= w;
    V_DrawPatch(x, n->y, FG, n->p[ num % 10 ]);
    num /= 10;
  }

  // draw a minus sign if necessary
  if (neg)
    V_DrawPatch(x - 8, n->y, FG, sttminus);

}

void STlib_updateNum(st_number_t *n, boolean refresh)
{
  if (*n->on) STlib_drawNum(n, refresh);
}

void STlib_initPercent(st_percent_t *p, int x, int y, patch_t **pl,
  int *num, boolean *on, patch_t *percent)
{
  STlib_initNum(&p->n, x, y, pl, num, on, 3);
  p->p = percent;
}

void STlib_updatePercent(st_percent_t *per, int refresh)
{
  if (refresh && *per->n.on) V_DrawPatch(per->n.x, per->n.y, FG, per->p);
  STlib_updateNum(&per->n, refresh);
}

void STlib_initMultIcon(st_multicon_t *i, int x, int y, patch_t **il,
  int *inum, boolean *on)
{
  i->x = x;
  i->y = y;
  i->oldinum = -1;
  i->inum = inum;
  i->on = on;
  i->p = il;
}

void STlib_updateMultIcon(st_multicon_t *mi, boolean refresh)
{
  int w, h, x, y;

  if (*mi->on && (mi->oldinum != *mi->inum || refresh) && (*mi->inum!=-1))
  {
    if (mi->oldinum != -1)
    {
      x = mi->x - SHORT(mi->p[mi->oldinum]->leftoffset);
      y = mi->y - SHORT(mi->p[mi->oldinum]->topoffset);
      w = SHORT(mi->p[mi->oldinum]->width);
      h = SHORT(mi->p[mi->oldinum]->height);
  	  if (y - ST_Y < 0) I_Error("updateMultIcon: y - ST_Y < 0");
      V_CopyRect(x, y-ST_Y, BG, w, h, x, y, FG);
    }
    V_DrawPatch(mi->x, mi->y, FG, mi->p[*mi->inum]);
    mi->oldinum = *mi->inum;
  }

}

void STlib_initBinIcon(st_binicon_t *b, int x, int y, patch_t *i,
  boolean *val, boolean *on)
{
  b->x = x;
  b->y = y;
  b->oldval = 0;
  b->val = val;
  b->on = on;
  b->p = i;
}

void STlib_updateBinIcon(st_binicon_t *bi, boolean refresh)
{
  int x, y, w, h;

  if (*bi->on && (bi->oldval != *bi->val || refresh))
  {
    x = bi->x - SHORT(bi->p->leftoffset);
    y = bi->y - SHORT(bi->p->topoffset);
    w = SHORT(bi->p->width);
    h = SHORT(bi->p->height);
	if (y - ST_Y < 0) I_Error("updateBinIcon: y - ST_Y < 0");
    if (*bi->val) V_DrawPatch(bi->x, bi->y, FG, bi->p);
    else V_CopyRect(x, y-ST_Y, BG, w, h, x, y, FG);
    bi->oldval = *bi->val;
  }

}