Removed libfreetype fork, replacing it with a submodule and some Inferno-specific files.

Retained the license documents and updated the header files.

1 files changed, 67 insertions, 28 deletions

diff --git a/include/freetype/ftsynth.h b/include/freetype/ftsynth.h
index 2424ff62..43081b6c 100644
--- a/include/freetype/ftsynth.h
+++ b/include/freetype/ftsynth.h
@@ -1,20 +1,20 @@
-/***************************************************************************/
-/*                                                                         */
-/*  ftsynth.h                                                              */
-/*                                                                         */
-/*    FreeType synthesizing code for emboldening and slanting              */
-/*    (specification).                                                     */
-/*                                                                         */
-/*  Copyright 2000-2001 by                                                 */
-/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
-/*                                                                         */
-/*  This file is part of the FreeType project, and may only be used,       */
-/*  modified, and distributed under the terms of the FreeType project      */
-/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
-/*  this file you indicate that you have read the license and              */
-/*  understand and accept it fully.                                        */
-/*                                                                         */
-/***************************************************************************/
+/****************************************************************************
+ *
+ * ftsynth.h
+ *
+ *   FreeType synthesizing code for emboldening and slanting
+ *   (specification).
+ *
+ * Copyright (C) 2000-2024 by
+ * David Turner, Robert Wilhelm, and Werner Lemberg.
+ *
+ * This file is part of the FreeType project, and may only be used,
+ * modified, and distributed under the terms of the FreeType project
+ * license, LICENSE.TXT.  By continuing to use, modify, or distribute
+ * this file you indicate that you have read the license and
+ * understand and accept it fully.
+ *
+ */
 
 
   /*************************************************************************/
@@ -23,7 +23,7 @@
   /*************************************************************************/
   /*************************************************************************/
   /*********                                                       *********/
-  /*********        WARNING, THIS IS ALPHA CODE, THIS API          *********/
+  /*********        WARNING, THIS IS ALPHA CODE!  THIS API         *********/
   /*********    IS DUE TO CHANGE UNTIL STRICTLY NOTIFIED BY THE    *********/
   /*********            FREETYPE DEVELOPMENT TEAM                  *********/
   /*********                                                       *********/
@@ -34,32 +34,71 @@
   /*************************************************************************/
 
 
-#ifndef __FTSYNTH_H__
-#define __FTSYNTH_H__
+  /* Main reason for not lifting the functions in this module to a  */
+  /* 'standard' API is that the used parameters for emboldening and */
+  /* slanting are not configurable.  Consider the functions as a    */
+  /* code resource that should be copied into the application and   */
+  /* adapted to the particular needs.                               */
 
 
-#include <ft2build.h>
-#include FT_FREETYPE_H
+#ifndef FTSYNTH_H_
+#define FTSYNTH_H_
 
 
-FT_BEGIN_HEADER
+#include <freetype/freetype.h>
+
+#ifdef FREETYPE_H
+#error "freetype.h of FreeType 1 has been loaded!"
+#error "Please fix the directory search order for header files"
+#error "so that freetype.h of FreeType 2 is found first."
+#endif
 
 
-  /* This code is completely experimental -- use with care! */
-  /* It will probably be completely rewritten in the future */
-  /* or even integrated into the library.                   */
+FT_BEGIN_HEADER
+
+  /* Embolden a glyph by a 'reasonable' value (which is highly a matter of */
+  /* taste).  This function is actually a convenience function, providing  */
+  /* a wrapper for @FT_Outline_Embolden and @FT_Bitmap_Embolden.           */
+  /*                                                                       */
+  /* For emboldened outlines the height, width, and advance metrics are    */
+  /* increased by the strength of the emboldening -- this even affects     */
+  /* mono-width fonts!                                                     */
+  /*                                                                       */
+  /* You can also call @FT_Outline_Get_CBox to get precise values.         */
   FT_EXPORT( void )
   FT_GlyphSlot_Embolden( FT_GlyphSlot  slot );
 
+  /* Precisely adjust the glyph weight either horizontally or vertically.  */
+  /* The `xdelta` and `ydelta` values are fractions of the face Em size    */
+  /* (in fixed-point format).  Considering that a regular face would have  */
+  /* stem widths on the order of 0.1 Em, a delta of 0.05 (0x0CCC) should   */
+  /* be very noticeable.  To increase or decrease the weight, use positive */
+  /* or negative values, respectively.                                     */
+  FT_EXPORT( void )
+  FT_GlyphSlot_AdjustWeight( FT_GlyphSlot  slot,
+                             FT_Fixed      xdelta,
+                             FT_Fixed      ydelta );
 
+
+  /* Slant an outline glyph to the right by about 12 degrees.              */
   FT_EXPORT( void )
   FT_GlyphSlot_Oblique( FT_GlyphSlot  slot );
 
- /* */
+  /* Slant an outline glyph by a given sine of an angle.  You can apply    */
+  /* slant along either x- or y-axis by choosing a corresponding non-zero  */
+  /* argument.  If both slants are non-zero, some affine transformation    */
+  /* will result.                                                          */
+  FT_EXPORT( void )
+  FT_GlyphSlot_Slant( FT_GlyphSlot  slot,
+                      FT_Fixed      xslant,
+                      FT_Fixed      yslant );
+
+  /* */
+
 
 FT_END_HEADER
 
-#endif /* __FTSYNTH_H__ */
+#endif /* FTSYNTH_H_ */
 
 
 /* END */