mirror of
https://github.com/Valeh2012/PersonalVotingMachine
synced 2024-11-27 03:11:00 +02:00
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
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#ifndef _BDF_GLYPH_H
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#define _BDF_GLYPH_H
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#include <stdint.h>
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#include <stddef.h>
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/* forward def */
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typedef struct _bdf_font_struct bf_t;
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struct _bbx_struct
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{
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long w;
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long h;
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long x;
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long y;
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};
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typedef struct _bbx_struct bbx_t;
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struct _bdf_glyph_struct
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{
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bf_t *bf;
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long encoding;
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long map_to;
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long dwidth_x;
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long dwidth_y;
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bbx_t bbx; /* x,y are delta x,y from glyph, w,h start wth bitmap dimension, but may be reduced */
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long shift_x; /* extra shift for BDF_BBX_MODE_HEIGHT alignment */
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int is_excluded_from_kerning;
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uint8_t *bitmap_data;
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int bitmap_width; /* the physical width within "bitmap_data", will be larger than or equal to bbx.w */
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int bitmap_height;
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//int actual_bitmap_width; /* identical to bbx.w, maybe replace actual_bitmap_width by bbx.w */
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//int actual_bitmap_height; /* identical to bbx.h, maybe replace actual_bitmap_height by bbx.h */
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uint8_t *target_data; /* if this is not NULL, then there is a valid glyph */
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int target_max; /* 32 bit value */
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int target_cnt; /* 32 bit value */
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int target_bit_pos;
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/* rle data */
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unsigned rle_bits_per_0;
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unsigned rle_bits_per_1;
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int rle_is_first;
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unsigned rle_bitcnt;
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unsigned rle_last_0;
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unsigned rle_last_1;
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long width_deviation; /* filled by bf_copy_bbx_and_update_shift for statistics */
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};
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typedef struct _bdf_glyph_struct bg_t;
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bg_t *bg_Open(void);
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void bg_Close(bg_t *bg);
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int bg_AddTargetData(bg_t *bg, uint8_t data);
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void bg_ClearTargetData(bg_t *bg);
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int bg_AddTargetBits(bg_t *bg, unsigned cnt, unsigned val);
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int bg_FlushTargetBits(bg_t *bg);
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int bg_SetBitmapSizeInBytes(bg_t *bg, size_t bytes);
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int bg_SetBitmapSize(bg_t *bg, int w, int h);
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void bg_SetBitmapPixel(bg_t *bg, int x, int y, int value);
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int bg_GetBitmapPixel(bg_t *bg, int x, int y);
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int bg_GetBBXPixel(bg_t *bg, int x, int y);
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void bg_ShowBitmap(bg_t *bg, bbx_t *bbx);
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void bg_ReduceGlyph(bg_t *bg);
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int bg_Max(bg_t *bg, bbx_t *max); /* returns idx which describes glyph expansion */
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/* bdf_rle.c */
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int bg_rle_compress(bg_t *bg, bbx_t *bbx, unsigned rle_bits_per_0, unsigned rle_bits_per_1, int is_output);
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#endif
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