/*
 *  $Id: font.cc,v 1.1.1.1 2002/08/18 17:28:53 aeneas Exp $
 *  Copyright (c) 2002, Dominik Schnitzer <dominik@schnitzer.at>
 *
 *  JFK - JFK Fucking Killerz, a massive multiplayer 2d shoot'em-up game
 *  http://relax.ath.cx/jfk/
 *
 *  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 Library 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.
 */

#include <string>
#include "font.h"
#include "output.h"
#include "exception.h"

using namespace std;
using namespace JFK::client;


font::font(output* outp, string file)
{
    out = outp;
    fontset = out->load_image("font", file);
    if (fontset == NULL)
        throw exception(string("Error loading font: " + file));

    char_width  = out->get_image_width(fontset) / MAX_CHARS;
    char_height = out->get_image_height(fontset);
}


font::~font()
{
    out->free_image(fontset);
}


void
font::draw_text(int x, int y, string text)
{
    /* Dont draw if the text is outside or invisible anyways */
    if ((x > out->get_width()) || (y > out->get_height()) ||
        ((x + get_textwidth(text)) < 0) || ((y + char_height) < 0))
    {
        return;
    }
    
    int characters = text.length();
    int srcx = 0;
    int dstx = x;
    
    /* Now draw the text */
    for (int i = 0; i < characters; i++)
    {
        /* Don't draw, if it's an unknown (unmapped) ascii character */
        if ((text[i] < 32) || (text[i] > 126))
            continue;
        
        char n = text[i]; 
        if ((text[i] >= 'a') && (text[i] <= 'z'))
            n = text[i] - 32;
        
        srcx = (n - 32) * char_width;
        out->draw_image_ext(fontset, srcx, 0, char_width, char_height,
            dstx, y, char_width, char_height);
        dstx += char_width;
    }
}


int
font::get_textwidth(string text)
{
    return text.length() * char_width;
}