| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485 |
- #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
|
