scummvm/tools/sci/bdftofont.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

#include <bdf.h>
#include <config.h>
#include <stdlib.h>
#include <stdio.h>


bdf_options_t bdf_opts = {
	0, /* ttf_hint */
	0, /* correct_metrics */
	0, /* keep_unencoded */
	0, /* keep_comments */
	0, /* pad_cells */
	0, /* font_spacing */
	0, /* point_size */
	0, /* resolution_x */
	0, /* resolution_y */
	0, /* bits_per_pixel */
	BDF_UNIX_EOL /* eol */
};


#define GLYPH(n) glyphs[(((n) > 31)? ((n) - 31) : 0)]

void
convert_font(FILE *in_file, FILE *out_file) {
	bdf_font_t *font =
	    bdf_load_font(in_file,
	                  &bdf_opts,
	                  NULL, NULL);

	int chars_nr = font->glyphs_used;
	int width = font->monowidth;
	int bytes_per_row = (width + 7) >> 3;
	int line_height;
	int char_height = 0;
	int char_byte_size;
	int i;
	bdf_glyph_t *glyphs = font->glyphs;

	fclose(in_file);

	if (!font) {
		fprintf(stderr, "Not a BDF file? Aborting!\n");
		exit(1);
	}

	printf("Res = %d/%d; pointsize = %d, spacing = %d, width=%d, asc=%ld, desc=%ld, glyphs=%ld\n",
	       font->resolution_x,
	       font->resolution_y,
	       font->point_size,
	       font->spacing,
	       font->monowidth,
	       font->font_ascent,
	       font->font_descent,
	       chars_nr);

	if (chars_nr > 256)
		chars_nr = 256;

	for (i = 0; i < chars_nr; i++) {
		int rh = GLYPH(i).bbx.height;

		if (rh > char_height)
			char_height = rh;
	}



	line_height = char_height + 1;
	char_byte_size = bytes_per_row * char_height;

	fprintf(out_file, "# %d %d\n", chars_nr, char_height + 1);

	for (i = 0; i < chars_nr; i++) {
		int rh = GLYPH(i).bbx.height;
		int rw = GLYPH(i).bbx.width;
		int xoff = 0; /* GLYPH(i).bbx.x_offset; */
		int yoff = 0; /* GLYPH(i).bbx.y_offset; */
		int j, k;
		int top_pad = yoff;
		int bot_pad = (char_height - rh) - top_pad;
		int bytes_to_read = (GLYPH(i).bytes) / rh;
		unsigned char *data = GLYPH(i).bitmap;

		if (bytes_to_read <= 0) {
			fprintf(stderr, "No bytes per row: bytes=%d, w=%d, h=%d\n",
			        GLYPH(i).bytes, rw, rh);
			exit(1);
		}

		if (bot_pad < 0) {
			fprintf(stderr, "Bottom padding <0: height=%d/%d, top_pad=%d\n",
			        rh, char_height, yoff);
			exit(1);
		}

		/* First, pad everything */
		for (j = 0; j < top_pad; j++) {
			for (k = 0; k < rw; k++)
				fprintf(out_file, ".");
			fprintf(out_file, "\n");
		}

		/* Write char data */
		for (j = 0; j < rh; j++) {
			unsigned int b = 0;
			unsigned int oldb;
			for (k = 0; k < bytes_to_read; k++) {
				int shift_offset = 8 * (bytes_to_read - 1 - k);
				b |= (*data++ << shift_offset);
			}

			oldb = b;

			for (k = 0; k < rw; k++)
				fprintf(out_file, (oldb & (1 << ((bytes_per_row * 8) - 1 - k))) ? "#" : ".");

			fprintf(out_file, "\n");
		}

		/* Pad bottom */
		for (j = 0; j < bot_pad; j++) {
			for (k = 0; k < rw; k++)
				fprintf(out_file, ".");
			fprintf(out_file, "\n");
		}
		fprintf(out_file, "----\t 0x%02x ('%c') */\n", i, ((i > 31) && (i < 0x7f)) ? i : '.');
	}
	fprintf(out_file, "\n\n");

	fclose(out_file);
}


int
main(int argc, char **argv) {
	FILE *f = NULL;
	bdf_setup();

	if (argc < 3) {
		fprintf(stderr, "Usage: %s <font.bdf> <outfile.font>\n ", argv[0]);
		exit(1);
	}

	f = fopen(argv[1], "r");
	if (f)
		convert_font(f, fopen(argv[2], "w"));
	else
		perror(argv[1]);

	bdf_cleanup();
}