/*
 * Copyright 2008 Department of Mathematical Sciences, New Mexico State University
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * DEPARTMENT OF MATHEMATICAL SCIENCES OR NEW MEXICO STATE UNIVERSITY BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef _h_bdfP
#define _h_bdfP

#include "bdf.h"

#ifdef __cplusplus
extern "C" {
#endif

#ifndef MYABS
#define MYABS(xx) ((xx) < 0 ? -(xx) : (xx))
#endif

/*
 * Macros and structures used for undo operations in the font.
 */
#define _UNDO_REPLACE_GLYPHS 1
#define _UNDO_INSERT_GLYPHS  2
#define _UNDO_MERGE_GLYPHS   3

/*
 * This structure is for undo operations of replacing and merging glyphs
 * in the font.
 */
typedef struct {
    bdf_bbx_t b;
    bdf_glyphlist_t g;
} _bdf_undo1_t;

/*
 * This structure is for undo operations of inserting glyphs.
 */
typedef struct {
    bdf_bbx_t b;
    int start;
    int end;
} _bdf_undo2_t;

/*
 * This is the final undo structure used to store undo information with the
 * font.
 */
typedef struct {
    int type;
    union {
        _bdf_undo1_t one;
        _bdf_undo2_t two;
    } field;
} _bdf_undo_t;

/*
 * Tables for rotation and shearing.
 */
extern double _bdf_cos_tbl[];
extern double _bdf_sin_tbl[];
extern double _bdf_tan_tbl[];

/*
 * PSF magic numbers.
 */
extern unsigned char _bdf_psf1magic[];
extern unsigned char _bdf_psf2magic[];
extern char _bdf_psfcombined[];

/*
 * Arrays of masks for test with different bits per pixel.
 */
extern unsigned char bdf_onebpp[];
extern unsigned char bdf_twobpp[];
extern unsigned char bdf_fourbpp[];
extern unsigned char bdf_eightbpp[];

/*
 * Simple routine for determining the ceiling.
 */
extern short _bdf_ceiling(double v);

extern unsigned char *_bdf_strdup(unsigned char *s, unsigned int len);
extern void _bdf_memmove(char *dest, char *src, unsigned int bytes);

extern short _bdf_atos(char *s, char **end, int base);
extern int _bdf_atol(char *s, char **end, int base);
extern unsigned int _bdf_atoul(char *s, char **end, int base);

/*
 * Function to locate the nearest glyph to a specified encoding.
 */
extern bdf_glyph_t *_bdf_locate_glyph(bdf_font_t *font, int encoding,
                                      int unencoded);

/*
 * Macros to test/set the modified status of a glyph.
 */
#define _bdf_glyph_modified(map, e) ((map)[(e) >> 5] & (1 << ((e) & 31)))
#define _bdf_set_glyph_modified(map, e) (map)[(e) >> 5] |= (1 << ((e) & 31))
#define _bdf_clear_glyph_modified(map, e) (map)[(e) >> 5] &= ~(1 << ((e) & 31))

/*
 * Function to add a message to the font.
 */
extern void _bdf_add_acmsg(bdf_font_t *font, char *msg, unsigned int len);

/*
 * Function to add a comment to the font.
 */
extern void _bdf_add_comment(bdf_font_t *font, char *comment,
                             unsigned int len);

/*
 * Function to do glyph name table cleanup when exiting.
 */
extern void _bdf_glyph_name_cleanup(void);

/*
 * Function to pad cells when saving glyphs.
 */
extern void _bdf_pad_cell(bdf_font_t *font, bdf_glyph_t *glyph,
                          bdf_glyph_t *cell);

/*
 * Function to crop glyphs down to their minimum bitmap.
 */
extern void _bdf_crop_glyph(bdf_font_t *font, bdf_glyph_t *glyph);

/*
 * Routine to generate a string list from the PSF2 Unicode mapping format.
 */
extern char **_bdf_psf_unpack_mapping(bdf_psf_unimap_t *unimap, int *num_seq);

/*
 * Routine to convert a string list of mappings back to PSF2 format.
 */
extern int _bdf_psf_pack_mapping(char **list, int len, int encoding,
                                 bdf_psf_unimap_t *map);

#ifdef __cplusplus
}
#endif

#endif /* _h_bdfP */