ref: 6c15b0947e0e139ed5045c94d0740955de5a6dce
parent: 0b264c8baa04534353bfcf506f3e29123ed2b9ab
author: Ali Gholami Rudi <ali@rudi.ir>
date: Sat Dec 10 15:18:51 EST 2016
font: accumulate GPOS adjustments
--- a/font.c
+++ b/font.c
@@ -160,16 +160,16 @@
return 1;
}
+/* find a matching gsub/gpos rule; *idx should be -1 initially */
static int font_findrule(struct font *fn, int gsub, int pos,
- int *fwd, int fwdlen, int *ctx, int ctxlen)
+ int *fwd, int fwdlen, int *ctx, int ctxlen, int *idx)
{struct grule *rules = gsub ? fn->gsub : fn->gpos;
int *r1 = iset_get(gsub ? fn->gsub0 : fn->gpos0, fwd[0]);
- int i = -1;
- while (r1 && r1[++i] >= 0) {- if (r1[i] >= pos && font_rulematch(fn, &rules[r1[i]], fwd,
- fwdlen, ctx, ctxlen))
- return r1[i];
+ while (r1 && r1[++*idx] >= 0) {+ if (r1[*idx] >= pos && font_rulematch(fn, &rules[r1[*idx]],
+ fwd, fwdlen, ctx, ctxlen))
+ return r1[*idx];
}
return -1;
}
@@ -179,17 +179,22 @@
int *x, int *y, int *xadv, int *yadv)
{struct grule *gpos = fn->gpos;
+ struct gpat *pats;
int i, k;
for (i = 0; i < slen; i++) {- int r = font_findrule(fn, 0, 0, src + i, slen - i, src + i, i);
- if (r >= 0) {- struct gpat *pats = gpos[r].pats;
+ int idx = -1;
+ while (1) {+ int r = font_findrule(fn, 0, 0, src + i, slen - i,
+ src + i, i, &idx);
+ if (r < 0)
+ break;
+ pats = gpos[r].pats;
/* we should accumulate the values... */
for (k = 0; k < gpos[r].len; k++) {- x[i + k] = pats[k].x;
- y[i + k] = pats[k].y;
- xadv[i + k] = pats[k].xadv;
- yadv[i + k] = pats[k].yadv;
+ x[i + k] += pats[k].x;
+ y[i + k] += pats[k].y;
+ xadv[i + k] += pats[k].xadv;
+ yadv[i + k] += pats[k].yadv;
}
}
}
@@ -201,7 +206,9 @@
int best = -1;
int i;
for (i = 0; i < slen; i++) {- int r = font_findrule(fn, 1, pos, src + i, slen - i, src + i, i);
+ int idx = -1;
+ int r = font_findrule(fn, 1, pos, src + i, slen - i,
+ src + i, i, &idx);
if (r >= 0 && (best < 0 || r < best))
best = r;
}