/* Emacs style mode select   -*- C++ -*-
 *-----------------------------------------------------------------------------
 *
 *
 *  PrBoom a Doom port merged with LxDoom and LSDLDoom
 *  based on BOOM, a modified and improved DOOM engine
 *  Copyright (C) 1999 by
 *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
 *  Copyright (C) 1999-2000 by
 *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 *  02111-1307, USA.
 *
 * DESCRIPTION:
 *      The status bar widget code.
 *
 *-----------------------------------------------------------------------------*/

#include "doomdef.h"
#include "doomstat.h"
#include "v_video.h"
#include "w_wad.h"
#include "m_swap.h"
#include "st_stuff.h"
#include "st_lib.h"
#include "r_main.h"

int sts_always_red;      //jff 2/18/98 control to disable status color changes
int sts_pct_always_gray; // killough 2/21/98: always gray %'s? bug or feature?

//
// STlib_init()
//
void STlib_init(void)
{
   // cph - no longer hold STMINUS pointer
}

//
// STlib_initNum()
//
// Initializes an st_number_t widget
//
// Passed the widget, its position, the patches for the digits, a pointer
// to the value displayed, a pointer to the on/off control, and the width
// Returns nothing
//
void STlib_initNum
( st_number_t* n,
  int x,
  int y,
  const patchnum_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;
}

/*
 * STlib_drawNum()
 *
 * A fairly efficient way to draw a number based on differences from the
 * old number.
 *
 * Passed a st_number_t widget, a color range for output, and a flag
 * indicating whether refresh is needed.
 * Returns nothing
 *
 * jff 2/16/98 add color translation to digit output
 * cphipps 10/99 - const pointer to colour trans table, made function static
 */
static void STlib_drawNum
( st_number_t*  n,
  int cm,
  boolean refresh )
{

   int   numdigits = n->width;
   int   num = *n->num;

   int   w = SHORT(n->p[0].width);
   int   h = SHORT(n->p[0].height);
   int   x = n->x;

   int   neg;

   // leban 1/20/99:
   // strange that somebody went through all the work to draw only the
   // differences, and then went and constantly redrew all the numbers.
   // return without drawing if the number didn't change and the bar
   // isn't refreshing.
   if(n->oldnum == num && !refresh)
      return;

   // CPhipps - compact some code, use num instead of *n->num
   if ((neg = (n->oldnum = num) < 0))
   {
      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;

#ifdef RANGECHECK
   if (n->y - ST_Y < 0)
      I_Error("STlib_drawNum: n->y - ST_Y < 0");
#endif

   V_CopyRect(x, n->y - ST_Y, BG, w*numdigits, h, x, n->y, FG, VPT_STRETCH);

   // if non-number, do not draw it
   if (num == 1994)
      return;

   x = n->x;

   //jff 2/16/98 add color translation to digit output
   // in the special case of 0, you draw 0
   if (!num)
      // CPhipps - patch drawing updated, reformatted
      V_DrawNumPatch(x - w, n->y, FG, n->p[0].lumpnum, cm,
                     (((cm!=CR_DEFAULT) && !sts_always_red) ? VPT_TRANS : VPT_NONE) | VPT_STRETCH);

   // draw the new number
   //jff 2/16/98 add color translation to digit output
   while (num && numdigits--) {
      // CPhipps - patch drawing updated, reformatted
      x -= w;
      V_DrawNumPatch(x, n->y, FG, n->p[num % 10].lumpnum, cm,
                     (((cm!=CR_DEFAULT) && !sts_always_red) ? VPT_TRANS : VPT_NONE) | VPT_STRETCH);
      num /= 10;
   }

   // draw a minus sign if necessary
   //jff 2/16/98 add color translation to digit output
   // cph - patch drawing updated, load by name instead of acquiring pointer earlier
   if (neg)
      V_DrawNamePatch(x - w, n->y, FG, "STTMINUS", cm,
                      (((cm!=CR_DEFAULT) && !sts_always_red) ? VPT_TRANS : VPT_NONE) | VPT_STRETCH);
}

/*
 * STlib_updateNum()
 *
 * Draws a number conditionally based on the widget's enable
 *
 * Passed a number widget, the output color range, and a refresh flag
 * Returns nothing
 *
 * jff 2/16/98 add color translation to digit output
 * cphipps 10/99 - make that pointer const
 */
void STlib_updateNum
( st_number_t*    n,
  int cm,
  boolean   refresh )
{
   if (*n->on) STlib_drawNum(n, cm, refresh);
}

//
// STlib_initPercent()
//
// Initialize a st_percent_t number with percent sign widget
//
// Passed a st_percent_t widget, the position, the digit patches, a pointer
// to the number to display, a pointer to the enable flag, and patch
// for the percent sign.
// Returns nothing.
//
void STlib_initPercent
( st_percent_t* p,
  int x,
  int y,
  const patchnum_t* pl,
  int* num,
  boolean* on,
  const patchnum_t* percent )
{
   STlib_initNum(&p->n, x, y, pl, num, on, 3);
   p->p = percent;
}

/*
 * STlib_updatePercent()
 *
 * Draws a number/percent conditionally based on the widget's enable
 *
 * Passed a precent widget, the output color range, and a refresh flag
 * Returns nothing
 *
 * jff 2/16/98 add color translation to digit output
 * cphipps - const for pointer to the colour translation table
 */

void STlib_updatePercent
( st_percent_t*   per,
  int cm,
  int refresh )
{
   if (*per->n.on && (refresh || (per->n.oldnum != *per->n.num))) {
      // killough 2/21/98: fix percents not updated;
      /* CPhipps - make %'s only be updated if number changed */
      // CPhipps - patch drawing updated
      V_DrawNumPatch(per->n.x, per->n.y, FG, per->p->lumpnum,
                     sts_pct_always_gray ? CR_GRAY : cm,
                     (sts_always_red ? VPT_NONE : VPT_TRANS) | VPT_STRETCH);
   }

   STlib_updateNum(&per->n, cm, refresh);
}

//
// STlib_initMultIcon()
//
// Initialize a st_multicon_t widget, used for a multigraphic display
// like the status bar's keys.
//
// Passed a st_multicon_t widget, the position, the graphic patches, a pointer
// to the numbers representing what to display, and pointer to the enable flag
// Returns nothing.
//
void STlib_initMultIcon
( st_multicon_t* i,
  int x,
  int y,
  const patchnum_t* il,
  int* inum,
  boolean* on )
{
   i->x  = x;
   i->y  = y;
   i->oldinum  = -1;
   i->inum = inum;
   i->on = on;
   i->p  = il;
}

//
// STlib_updateMultIcon()
//
// Draw a st_multicon_t widget, used for a multigraphic display
// like the status bar's keys. Displays each when the control
// numbers change or refresh is true
//
// Passed a st_multicon_t widget, and a refresh flag
// Returns nothing.
//
void STlib_updateMultIcon
( st_multicon_t*  mi,
  boolean   refresh )
{
   int w;
   int h;
   int x;
   int y;

   if (*mi->on && (mi->oldinum != *mi->inum || refresh))
   {
      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);

#ifdef RANGECHECK
         if (y - ST_Y < 0)
            I_Error("STlib_updateMultIcon: y - ST_Y < 0");
#endif

         V_CopyRect(x, y-ST_Y, BG, w, h, x, y, FG, VPT_STRETCH);
      }
      if (*mi->inum != -1)  // killough 2/16/98: redraw only if != -1
         V_DrawNumPatch(mi->x, mi->y, FG, mi->p[*mi->inum].lumpnum, CR_DEFAULT, VPT_STRETCH);
      mi->oldinum = *mi->inum;
   }
}

//
// STlib_initBinIcon()
//
// Initialize a st_binicon_t widget, used for a multinumber display
// like the status bar's weapons, that are present or not.
//
// Passed a st_binicon_t widget, the position, the digit patches, a pointer
// to the flags representing what is displayed, and pointer to the enable flag
// Returns nothing.
//
void STlib_initBinIcon
( st_binicon_t* b,
  int x,
  int y,
  const patchnum_t* i,
  boolean* val,
  boolean* on )
{
   b->x  = x;
   b->y  = y;
   b->oldval = 0;
   b->val  = val;
   b->on = on;
   b->p  = i;
}

//
// STlib_updateBinIcon()
//
// DInitialize a st_binicon_t widget, used for a multinumber display
// like the status bar's weapons, that are present or not.
//
// Draw a st_binicon_t widget, used for a multinumber display
// like the status bar's weapons that are present or not. Displays each
// when the control flag changes or refresh is true
//
// Passed a st_binicon_t widget, and a refresh flag
// Returns nothing.
//
void STlib_updateBinIcon
( st_binicon_t*   bi,
  boolean   refresh )
{
   int     x;
   int     y;
   int     w;
   int     h;

   if (*bi->on && (bi->oldval != (signed)*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);

#ifdef RANGECHECK
      if (y - ST_Y < 0)
         I_Error("STlib_updateBinIcon: y - ST_Y < 0");
#endif

      if (*bi->val)
         V_DrawNumPatch(bi->x, bi->y, FG, bi->p->lumpnum, CR_DEFAULT, VPT_STRETCH);
      else
         V_CopyRect(x, y-ST_Y, BG, w, h, x, y, FG, VPT_STRETCH);

      bi->oldval = *bi->val;
   }
}
