[base, truetype] New function `FT_Get_Var_Axis_Flags'.

The reserved `flags' field got a value in OpenType version 1.8.2;
unfortunately, the public `FT_Var_Axis' structure misses the
corresponding element.  Since we can't add a new field, we add an
access function.

* src/base/ftmm.c (FT_Get_Var_Axis_Flags): New function.

* include/freetype/ftmm.h (FT_VAR_AXIS_FLAG_HIDDEN): New macro.
Updated.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Increase allocated memory
of `mmvar' to hold axis flags.
Fill the axis flags array.

* docs/CHANGES: Updated.

1 files changed, 24 insertions, 0 deletions

diff --git a/src/base/ftmm.c b/src/base/ftmm.c
index 2cb56a39b..c8450087b 100644
--- a/src/base/ftmm.c
+++ b/src/base/ftmm.c
@@ -402,4 +402,28 @@
   }
 
 
+  /* documentation is in ftmm.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_Var_Axis_Flags( FT_MM_Var*  master,
+                         FT_UInt     axis_index,
+                         FT_UInt*    flags )
+  {
+    FT_UShort*  axis_flags;
+
+
+    if ( !master || !flags )
+      return FT_THROW( Invalid_Argument );
+
+    if ( axis_index >= master->num_axis )
+      return FT_THROW( Invalid_Argument );
+
+    /* the axis flags array immediately follows the data of `master' */
+    axis_flags = (FT_UShort*)&( master[1] );
+    *flags     = axis_flags[axis_index];
+
+    return FT_Err_Ok;
+  }
+
+
 /* END */