From 0a545de895fb861fac88edea716e0b0a5d52f0ff Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Tue, 10 Oct 2006 06:46:36 +0000 Subject: finally, support for decomposing characters -- this makes it possible to display accented characters using the base character glyphs with overstriking combining marks. (needs contextual glyphs to make this look good, obviously) --- refresh.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) (limited to 'refresh.c') diff --git a/refresh.c b/refresh.c index ef9aa7f..7410866 100644 --- a/refresh.c +++ b/refresh.c @@ -3,19 +3,21 @@ #include "uuterm.h" #include "ucf.h" -static void extract_cell(unsigned *ch, struct uucell *cell) +static void extract_cell(unsigned *ch, size_t max, struct uucell *cell) { - int i; + int i, l; unsigned b; for (b=i=0; i<3; i++) b |= cell->c[i] << 8*i; - ch[0] = b; - ch -= 2; - for (; ic)+1 && cell->c[i]; i++) - ch[i] = uu_combine_involution(b, cell->c[i]); - if (cell->a & UU_ATTR_UL) - ch[i++] = '_'; //0x0332; - for (; ic)+1; i++) - ch[i] = 0; + l = uu_decompose_char(b, ch, max); + ch += l; max -= l; + for (; ic) && cell->c[i]; i++) { + l = uu_decompose_char(uu_combine_involution(b, cell->c[i]), ch, max); + ch += l; max -= l; + } + if ((cell->a & UU_ATTR_UL) && max) + max--, *ch++ = '_'; //0x0332; + for (; max; max--) *ch++ = 0; + ch[-1] = 0; } const void *ascii_get_glyph(unsigned); @@ -30,18 +32,19 @@ static const void *lookup_glyph(struct ucf *f, int i, unsigned *this, unsigned * return 0; } +#define CH_LEN 16 void uuterm_refresh_row(struct uudisp *d, struct uurow *row, int x1, int x2) { - unsigned ch[4][sizeof(row->cells[0].c)+1], *chp; + unsigned ch[4][CH_LEN], *chp; int x, i; int width, part; - if (x1) extract_cell(ch[(x1-1)&3], &row->cells[x1-1]); + if (x1) extract_cell(ch[(x1-1)&3], CH_LEN, &row->cells[x1-1]); else memset(ch[3], 0, sizeof(ch[3])); - extract_cell(ch[x1&3], &row->cells[x1]); + extract_cell(ch[x1&3], CH_LEN, &row->cells[x1]); for (x=x1; x<=x2; x++) { - extract_cell(ch[(x+1)&3], &row->cells[x+1]); + extract_cell(ch[(x+1)&3], CH_LEN, &row->cells[x+1]); if (ch[x&3][0] == UU_FULLWIDTH) { width = 2; part = 0; chp = ch[(x+1)&3]; } else if (ch[(x+3)&3][0] == UU_FULLWIDTH) { -- cgit v1.2.3