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/*
MACLIB: A companion library to SDL for working with Macintosh (tm) data
Copyright (C) 1997 Sam Lantinga
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
Sam Lantinga
5635-34 Springhouse Dr.
Pleasanton, CA 94588 (USA)
slouken@devolution.com
*/
#ifndef _fontserv_h
#define _fontserv_h
/* This documents the FontServ C++ class */
/* The FontServ takes a Macintosh NFNT resource file and extracts
the fonts for use with any blit type display. Specifically
designed for the Maelstrom port to Linux. :)
The specs for the NFNT resource were finally understood by looking
at mac2bdf, written by Guido van Rossum
-Sam Lantinga (slouken@devolution.com)
*/
#include <stdio.h>
#include <stdarg.h>
#include "Mac_Resource.h"
#include "SDL_FrameBuf.h"
/* Different styles supported by the font server */
#define STYLE_NORM 0x00
#define STYLE_BOLD 0x01
#define STYLE_ULINE 0x02
#define STYLE_ITALIC 0x04 /* Unimplemented */
#define WIDE_BOLD /* Bold text is widened porportionally */
/* Macintosh font magic numbers */
#define PROPFONT 0x9000
#define FIXEDFONT 0xB000
/* Lay-out of a Font Record header */
struct FontHdr {
Uint16 fontType; /* PROPFONT or FIXEDFONT */
Sint16 firstChar,
lastChar,
widMax,
kernMax, /* Negative of max kern */
nDescent; /* negative of descent */
Uint16 fRectWidth,
fRectHeight,
owTLoc, /* Offset in words from itself to
the start of the owTable */
ascent,
descent,
leading,
rowWords; /* Row width of bit image in words */
};
typedef struct {
struct FontHdr *header; /* The NFNT header! */
/* Variable-length tables */
Uint16 *bitImage; /* bitImage[rowWords][fRectHeight]; */
Uint16 *locTable; /* locTable[lastChar+3-firstChar]; */
Sint16 *owTable; /* owTable[lastchar+3-firstChar]; */
/* The Raw Data */
Mac_ResData *nfnt;
} MFont;
class FontServ {
public:
/* The "fontfile" parameter should be a Macintosh Resource fork file
that contains FOND and NFNT information for the desired fonts.
*/
FontServ(const char *fontfile);
~FontServ();
/* The font returned by NewFont() should be delete'd */
MFont *NewFont(const char *fontname, int ptsize);
/* Determine the final width/height of a text block (in pixels) */
Uint16 TextWidth(const char *text, MFont *font, Uint8 style);
Uint16 TextHeight(MFont *font);
/* Returns a bitmap image filled with the requested text.
The text should be freed with FreeText() after it is used.
*/
SDL_Surface *TextImage(const char *text, MFont *font, Uint8 style,
SDL_Color background, SDL_Color foreground);
SDL_Surface *TextImage(const char *text, MFont *font, Uint8 style,
Uint8 R, Uint8 G, Uint8 B) {
SDL_Color background = { 0xFF, 0xFF, 0xFF, 0 };
SDL_Color foreground;
foreground.r = R;
foreground.g = G;
foreground.b = B;
return(TextImage(text, font, style, foreground, background));
}
void FreeText(SDL_Surface *text);
/* Inverts the color of the text image */
int InvertText(SDL_Surface *text);
/* Returns NULL if everything is okay, or an error message if not */
char *Error(void) {
return(errstr);
}
private:
Mac_Resource *fontres;
int text_allocated;
/* Useful for getting error feedback */
void SetError(char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
va_end(ap);
errstr = errbuf;
}
char *errstr;
char errbuf[BUFSIZ];
};
#endif /* _fontserv_h */
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