86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
|
|
|
|
#ifndef _BDF_GLYPH_H
|
|
#define _BDF_GLYPH_H
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
|
|
/* forward def */
|
|
typedef struct _bdf_font_struct bf_t;
|
|
|
|
|
|
struct _bbx_struct
|
|
{
|
|
long w;
|
|
long h;
|
|
long x;
|
|
long y;
|
|
};
|
|
typedef struct _bbx_struct bbx_t;
|
|
|
|
|
|
struct _bdf_glyph_struct
|
|
{
|
|
bf_t *bf;
|
|
|
|
long encoding;
|
|
long map_to;
|
|
|
|
long dwidth_x;
|
|
long dwidth_y;
|
|
|
|
bbx_t bbx; /* x,y are delta x,y from glyph, w,h start wth bitmap dimension, but may be reduced */
|
|
long shift_x; /* extra shift for BDF_BBX_MODE_HEIGHT alignment */
|
|
int is_excluded_from_kerning;
|
|
|
|
uint8_t *bitmap_data;
|
|
int bitmap_width; /* the physical width within "bitmap_data", will be larger than or equal to bbx.w */
|
|
int bitmap_height;
|
|
|
|
//int actual_bitmap_width; /* identical to bbx.w, maybe replace actual_bitmap_width by bbx.w */
|
|
//int actual_bitmap_height; /* identical to bbx.h, maybe replace actual_bitmap_height by bbx.h */
|
|
|
|
uint8_t *target_data; /* if this is not NULL, then there is a valid glyph */
|
|
int target_max; /* 32 bit value */
|
|
int target_cnt; /* 32 bit value */
|
|
int target_bit_pos;
|
|
|
|
/* rle data */
|
|
|
|
unsigned rle_bits_per_0;
|
|
unsigned rle_bits_per_1;
|
|
|
|
int rle_is_first;
|
|
unsigned rle_bitcnt;
|
|
unsigned rle_last_0;
|
|
unsigned rle_last_1;
|
|
|
|
long width_deviation; /* filled by bf_copy_bbx_and_update_shift for statistics */
|
|
|
|
};
|
|
typedef struct _bdf_glyph_struct bg_t;
|
|
|
|
bg_t *bg_Open(void);
|
|
void bg_Close(bg_t *bg);
|
|
int bg_AddTargetData(bg_t *bg, uint8_t data);
|
|
void bg_ClearTargetData(bg_t *bg);
|
|
int bg_AddTargetBits(bg_t *bg, unsigned cnt, unsigned val);
|
|
int bg_FlushTargetBits(bg_t *bg);
|
|
|
|
int bg_SetBitmapSizeInBytes(bg_t *bg, size_t bytes);
|
|
int bg_SetBitmapSize(bg_t *bg, int w, int h);
|
|
void bg_SetBitmapPixel(bg_t *bg, int x, int y, int value);
|
|
int bg_GetBitmapPixel(bg_t *bg, int x, int y);
|
|
int bg_GetBBXPixel(bg_t *bg, int x, int y);
|
|
|
|
void bg_ShowBitmap(bg_t *bg, bbx_t *bbx);
|
|
void bg_ReduceGlyph(bg_t *bg);
|
|
int bg_Max(bg_t *bg, bbx_t *max); /* returns idx which describes glyph expansion */
|
|
|
|
/* bdf_rle.c */
|
|
int bg_rle_compress(bg_t *bg, bbx_t *bbx, unsigned rle_bits_per_0, unsigned rle_bits_per_1, int is_output);
|
|
|
|
|
|
#endif
|
|
|