10 static int fnrows
, fncols
;
11 static struct font
*fonts
[3];
15 if (pad_font(FR
, FI
, FB
))
17 rows
= fb_rows() / fnrows
;
18 cols
= fb_cols() / fncols
;
25 for (i
= 0; i
< 3; i
++)
30 #define CR(a) (((a) >> 16) & 0x0000ff)
31 #define CG(a) (((a) >> 8) & 0x0000ff)
32 #define CB(a) ((a) & 0x0000ff)
33 #define COLORMERGE(f, b, c) ((b) + (((f) - (b)) * (c) >> 8u))
35 static unsigned mixed_color(int fg
, int bg
, unsigned val
)
37 unsigned char r
= COLORMERGE(CR(fg
), CR(bg
), val
);
38 unsigned char g
= COLORMERGE(CG(fg
), CG(bg
), val
);
39 unsigned char b
= COLORMERGE(CB(fg
), CB(bg
), val
);
40 return FB_VAL(r
, g
, b
);
43 static unsigned color2fb(int c
)
45 return FB_VAL(CR(c
), CG(c
), CB(c
));
48 /* glyph bitmap cache */
49 #define GCLCNT (1 << 7) /* glyph cache list count */
50 #define GCLLEN (1 << 4) /* glyph cache list length */
51 #define GCIDX(c) ((c) & (GCLCNT - 1))
53 static fbval_t gc_mem
[GCLCNT
][GCLLEN
][NDOTS
];
54 static int gc_next
[GCLCNT
];
58 } gc_info
[GCLCNT
][GCLLEN
];
60 static fbval_t
*gc_get(int c
, int fg
, int bg
)
62 struct glyph
*g
= gc_info
[GCIDX(c
)];
64 for (i
= 0; i
< GCLLEN
; i
++)
65 if (g
[i
].c
== c
&& g
[i
].fg
== fg
&& g
[i
].bg
== bg
)
66 return gc_mem
[GCIDX(c
)][i
];
70 static fbval_t
*gc_put(int c
, int fg
, int bg
)
73 int pos
= gc_next
[idx
]++;
74 struct glyph
*g
= &gc_info
[idx
][pos
];
75 if (gc_next
[idx
] >= GCLLEN
)
80 return gc_mem
[idx
][pos
];
83 static void bmp2fb(fbval_t
*d
, char *s
, int fg
, int bg
, int nr
, int nc
)
86 for (i
= 0; i
< fnrows
; i
++) {
87 for (j
= 0; j
< fncols
; j
++) {
88 unsigned v
= i
< nr
&& j
< nc
?
89 (unsigned char) s
[i
* nc
+ j
] : 0;
90 d
[i
* fncols
+ j
] = mixed_color(fg
, bg
, v
);
95 static fbval_t
*ch2fb(int fn
, int c
, int fg
, int bg
)
99 if (c
< 0 || (c
< 128 && (!isprint(c
) || isspace(c
))))
101 if ((fbbits
= gc_get(c
, fg
, bg
)))
103 if (font_bitmap(fonts
[fn
], bits
, c
))
105 fbbits
= gc_put(c
, fg
, bg
);
106 bmp2fb(fbbits
, bits
, fg
& FN_C
, bg
& FN_C
,
107 font_rows(fonts
[fn
]), font_cols(fonts
[fn
]));
111 static void fb_set(int r
, int c
, void *mem
, int len
)
113 int bpp
= FBM_BPP(fb_mode());
114 memcpy(fb_mem(r
) + c
* bpp
, mem
, len
* bpp
);
117 static void fb_box(int sr
, int er
, int sc
, int ec
, fbval_t val
)
119 static fbval_t line
[32 * NCOLS
];
121 for (i
= sc
; i
< ec
; i
++)
123 for (i
= sr
; i
< er
; i
++)
124 fb_set(i
, sc
, line
, ec
- sc
);
127 static int fnsel(int fg
, int bg
)
129 if ((fg
| bg
) & FN_B
)
130 return fonts
[2] ? 2 : 0;
131 if ((fg
| bg
) & FN_I
)
132 return fonts
[1] ? 1 : 0;
136 void pad_put(int ch
, int r
, int c
, int fg
, int bg
)
142 bits
= ch2fb(fnsel(fg
, bg
), ch
, fg
, bg
);
144 bits
= ch2fb(0, ch
, fg
, bg
);
146 fb_box(sr
, sr
+ fnrows
, sc
, sc
+ fncols
, color2fb(bg
& FN_C
));
148 for (i
= 0; i
< fnrows
; i
++)
149 fb_set(sr
+ i
, sc
, bits
+ (i
* fncols
), fncols
);
152 void pad_fill(int sr
, int er
, int sc
, int ec
, int c
)
154 int fber
= er
>= 0 ? er
* fnrows
: fb_rows();
155 int fbec
= ec
>= 0 ? ec
* fncols
: fb_cols();
156 fb_box(sr
* fnrows
, fber
, sc
* fncols
, fbec
, color2fb(c
& FN_C
));
169 int pad_font(char *fr
, char *fi
, char *fb
)
171 struct font
*r
= fr
? font_open(fr
) : NULL
;
175 fonts
[1] = fi
? font_open(fi
) : NULL
;
176 fonts
[2] = fb
? font_open(fb
) : NULL
;
177 memset(gc_info
, 0, sizeof(gc_info
));
178 fnrows
= font_rows(fonts
[0]);
179 fncols
= font_cols(fonts
[0]);