diff options
Diffstat (limited to 'fontconfig/src/fcweight.c')
| -rw-r--r-- | fontconfig/src/fcweight.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fontconfig/src/fcweight.c b/fontconfig/src/fcweight.c index 87bbe67ab..77b78ad54 100644 --- a/fontconfig/src/fcweight.c +++ b/fontconfig/src/fcweight.c @@ -45,15 +45,22 @@ static int lerp(int x, int x1, int x2, int y1, int y2) { int dx = x2 - x1; int dy = y2 - y1; - assert (dx > 0 && dy > 0 && x1 <= x && x <= x2); + assert (dx > 0 && dy >= 0 && x1 <= x && x <= x2); return y1 + (dy*(x-x1) + dx/2) / dx; } -FcPublic int +int FcWeightFromOpenType (int ot_weight) { int i; - if (ot_weight <= 0 || ot_weight > 1000) + + /* Follow WPF Font Selection Model's advice. */ + if (1 <= ot_weight && ot_weight <= 9) + ot_weight *= 100; + + /* WPF Font Selection Model rejects 1000, we allow it + * because Pango uses that number. */ + if (ot_weight < 1 || ot_weight > 1000) return -1; for (i = 1; ot_weight > map[i].ot; i++) @@ -66,7 +73,7 @@ FcWeightFromOpenType (int ot_weight) return lerp (ot_weight, map[i-1].ot, map[i].ot, map[i-1].fc, map[i].fc); } -FcPublic int +int FcWeightToOpenType (int fc_weight) { int i; |