Update bundled Freetype to 2.9.1

This is required to support the new emoji font on Android 9.

[ChangeLog][Freetype] Upgraded bundled Freetype version to 2.9.1.
This also adds support for the latest emoji font in use on
Android 9.

Fixes: QTBUG-70657
Change-Id: I99be72f0d23c20aca122b8fdadd4ded87b2edce1
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>

1 files changed, 47 insertions, 1 deletions

diff --git a/src/3rdparty/freetype/src/sfnt/ttmtx.c b/src/3rdparty/freetype/src/sfnt/ttmtx.c
index 58309aa496..6ddda95b56 100644
--- a/src/3rdparty/freetype/src/sfnt/ttmtx.c
+++ b/src/3rdparty/freetype/src/sfnt/ttmtx.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Load the metrics tables common to TTF and OTF fonts (body).          */
 /*                                                                         */
-/*  Copyright 2006-2015 by                                                 */
+/*  Copyright 2006-2018 by                                                 */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -20,11 +20,24 @@
 #include FT_INTERNAL_DEBUG_H
 #include FT_INTERNAL_STREAM_H
 #include FT_TRUETYPE_TAGS_H
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include FT_SERVICE_METRICS_VARIATIONS_H
+#endif
+
 #include "ttmtx.h"
 
 #include "sferrors.h"
 
 
+  /* IMPORTANT: The TT_HoriHeader and TT_VertHeader structures should   */
+  /*            be identical except for the names of their fields,      */
+  /*            which are different.                                    */
+  /*                                                                    */
+  /*            This ensures that `tt_face_load_hmtx' is able to read   */
+  /*            both the horizontal and vertical headers.               */
+
+
   /*************************************************************************/
   /*                                                                       */
   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
@@ -214,6 +227,11 @@
     FT_ULong        table_pos, table_size, table_end;
     FT_UShort       k;
 
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+    FT_Service_MetricsVariations  var =
+      (FT_Service_MetricsVariations)face->var;
+#endif
+
 
     if ( vertical )
     {
@@ -274,6 +292,34 @@
       *abearing = 0;
       *aadvance = 0;
     }
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+    if ( var )
+    {
+      FT_Face  f = FT_FACE( face );
+      FT_Int   a = (FT_Int)*aadvance;
+      FT_Int   b = (FT_Int)*abearing;
+
+
+      if ( vertical )
+      {
+        if ( var->vadvance_adjust )
+          var->vadvance_adjust( f, gindex, &a );
+        if ( var->tsb_adjust )
+          var->tsb_adjust( f, gindex, &b );
+      }
+      else
+      {
+        if ( var->hadvance_adjust )
+          var->hadvance_adjust( f, gindex, &a );
+        if ( var->lsb_adjust )
+          var->lsb_adjust( f, gindex, &b );
+      }
+
+      *aadvance = (FT_UShort)a;
+      *abearing = (FT_Short)b;
+    }
+#endif
   }