[freetype2] apodtele-master-patch-38950 22e6d06b2: [truetype, type1] Additional variation tags.

[Werner Lemberg]

branch: apodtele-master-patch-38950
commit 22e6d06b219af91924783dfd7b8b3ad56c780f78
Author: Alexei Podtelezhnikov <apodtele@gmail.com>
Commit: Alexei Podtelezhnikov <apodtele@gmail.com>

    [truetype, type1] Additional variation tags.
    
    Sync with
      
https://learn.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg#registered-axis-tags
    
    * src/truetype/ttgxvar.h (TTAG_ital): New tag.
    * src/truetype/ttgxvar.c (TT_Get_MM_Var): Use it.
    * src/type1/t1loaad.c (T1_Get_MM_Var): Handle 'slnt' and 'ital'.
---
 src/truetype/ttgxvar.c | 2 ++
 src/truetype/ttgxvar.h | 1 +
 src/type1/t1load.c     | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index 699acb682..55861c587 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -2713,6 +2713,8 @@
           a->name = (char*)"OpticalSize";
         else if ( a->tag == TTAG_slnt )
           a->name = (char*)"Slant";
+        else if ( a->tag == TTAG_ital )
+          a->name = (char*)"Italic";
 
         next_name += 5;
         a++;
diff --git a/src/truetype/ttgxvar.h b/src/truetype/ttgxvar.h
index 9d88ce7a9..4fec980dc 100644
--- a/src/truetype/ttgxvar.h
+++ b/src/truetype/ttgxvar.h
@@ -343,6 +343,7 @@ FT_BEGIN_HEADER
 #define TTAG_wdth  FT_MAKE_TAG( 'w', 'd', 't', 'h' )
 #define TTAG_opsz  FT_MAKE_TAG( 'o', 'p', 's', 'z' )
 #define TTAG_slnt  FT_MAKE_TAG( 's', 'l', 'n', 't' )
+#define TTAG_ital  FT_MAKE_TAG( 'i', 't', 'a', 'l' )
 
 
   FT_LOCAL( FT_Error )
diff --git a/src/type1/t1load.c b/src/type1/t1load.c
index 30720f6a1..5a1afd8d9 100644
--- a/src/type1/t1load.c
+++ b/src/type1/t1load.c
@@ -355,6 +355,10 @@
         mmvar->axis[i].tag = FT_MAKE_TAG( 'w', 'd', 't', 'h' );
       else if ( ft_strcmp( mmvar->axis[i].name, "OpticalSize" ) == 0 )
         mmvar->axis[i].tag = FT_MAKE_TAG( 'o', 'p', 's', 'z' );
+      else if ( ft_strcmp( mmvar->axis[i].name, "Slant" ) == 0 )
+        mmvar->axis[i].tag = FT_MAKE_TAG( 's', 'l', 'n', 't' );
+      else if ( ft_strcmp( mmvar->axis[i].name, "Italic" ) == 0 )
+        mmvar->axis[i].tag = FT_MAKE_TAG( 'i', 't', 'a', 'l' );
     }
 
     mm_weights_unmap( blend->default_weight_vector,