From: Oleg Oshmyan <chortos@inbox.lv>
Date: Thu, 26 Dec 2013 00:33:57 +0000 (+0200)
Subject: Fix \fs+ and \fs-
X-Git-Tag: 0.11.0~44^2~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9f2ffc03574ae323867fba00f8aaacc637bb0aa1;p=libass

Fix \fs+ and \fs-

The argument is a relative amount. The unit is: \fs+1 = +10%.
---

diff --git a/libass/ass_parse.c b/libass/ass_parse.c
index d2feff3..be22a08 100644
--- a/libass/ass_parse.c
+++ b/libass/ass_parse.c
@@ -380,7 +380,7 @@ char *parse_tag(ASS_Renderer *render_priv, char *p, double pwr)
     } else if (mystrcmp(&p, "fs+")) {
         double val;
         if (mystrtod(&p, &val)) {
-            val = render_priv->state.font_size + pwr * val;
+            val = render_priv->state.font_size * (1 + pwr * val / 10);
         } else
             val = render_priv->state.style->FontSize;
         if (render_priv->state.font)
@@ -388,7 +388,7 @@ char *parse_tag(ASS_Renderer *render_priv, char *p, double pwr)
     } else if (mystrcmp(&p, "fs-")) {
         double val;
         if (mystrtod(&p, &val))
-            val = render_priv->state.font_size - pwr * val;
+            val = render_priv->state.font_size * (1 - pwr * val / 10);
         else
             val = render_priv->state.style->FontSize;
         if (render_priv->state.font)