wperror.c

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/*  CXL - Copyright (c) 1987-1989 by Mike Smedley - All Rights Reserved  */
/*  WPERROR.C   - displays an error message window  */
/*-----------------08-10-97 11:01am-----------------
 Modified to support multi-line error messages.  To use multi-line
 support, embed "\n" in string.

 09/01/977 - Added parameter to indicate whether to display [ Error ]
--------------------------------------------------*/

#include <stdio.h>
#include <string.h>
#include "cxldef.h"
#include "cxlkey.h"
#include "cxlvid.h"
#include "cxlwin.h"

int wperror(char *message, int error)
{
    static int wattr=WHITE|_RED,tattr=YELLOW|_RED;
    int lmessage,wwidth,row,col,srow,scol;
    int i;
    int cur_length = 0;
    int max_length = 0;
    int num_rows = 0;

    /* determine longest line & number of rows */
    lmessage=strlen(message);
    for ( i=0; i<lmessage+1; i++ )
    {
      if ( message[i] == '\n' || message[i] == '\0' )
      {
        if ( cur_length > max_length )
        {
          max_length = cur_length;
        }
        cur_length = 0;
        num_rows++;
      }
      else {
        cur_length++;
      }
    }

    /* calculate error window coordinates */
    wwidth=max_length+2;
    readcur(&row,&col);
    if(row> 21-num_rows ) {
      srow=row-(num_rows + 3);
    }
    else {
      srow=row+2;
    }
    if( (col+wwidth) >= _vinfo.numcols )
        scol=_vinfo.numcols-1-wwidth;
    else
        scol=col;

    if(scol<0) {
      return(_winfo.errno=W_STRLONG);
    }

    /* check for monochrome */
    if(_vinfo.mono) {
        wattr=LGREY;
        tattr=WHITE;
    }

    /* open error window */
    if(!wopen(srow,scol,srow+num_rows+1,scol+wwidth,0,WHITE|_RED,WHITE|_RED)) {
      return(_winfo.errno);
    }
    if (error) {
      wtitle("[ Error ]",TCENTER,WHITE|_RED);
    }
    else {
      wtitle("[ Warning ]",TCENTER,WHITE|_RED);
    }

    /* display error message */
    wtextattr(YELLOW|_RED);
    /* wputc(' '); */
    wputs(message);

    /* sound beep and wait for a keypress */
    beep();
    waitkey();

    /* close error window, reset cursor, and return normally */
    wclose();
    gotoxy_(row,col);
    return(_winfo.errno=W_NOERROR);
}