--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/harfbuzz/hb-font.h	Tue Mar 18 17:55:14 2025 -0400
@@ -0,0 +1,735 @@
+/*
+ * Copyright © 2009  Red Hat, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_H_IN
+#error "Include <hb.h> instead."
+#endif
+
+#ifndef HB_FONT_H
+#define HB_FONT_H
+
+#include "hb-common.h"
+#include "hb-face.h"
+#include "hb-draw.h"
+
+HB_BEGIN_DECLS
+
+
+typedef struct hb_font_t hb_font_t;
+
+
+/*
+ * hb_font_funcs_t
+ */
+
+typedef struct hb_font_funcs_t hb_font_funcs_t;
+
+HB_EXTERN hb_font_funcs_t *
+hb_font_funcs_create (void);
+
+HB_EXTERN hb_font_funcs_t *
+hb_font_funcs_get_empty (void);
+
+HB_EXTERN hb_font_funcs_t *
+hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
+
+HB_EXTERN void
+hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
+
+HB_EXTERN hb_bool_t
+hb_font_funcs_set_user_data (hb_font_funcs_t    *ffuncs,
+			     hb_user_data_key_t *key,
+			     void *              data,
+			     hb_destroy_func_t   destroy,
+			     hb_bool_t           replace);
+
+
+HB_EXTERN void *
+hb_font_funcs_get_user_data (hb_font_funcs_t    *ffuncs,
+			     hb_user_data_key_t *key);
+
+
+HB_EXTERN void
+hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
+
+HB_EXTERN hb_bool_t
+hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
+
+
+/* font and glyph extents */
+
+/* Note that typically ascender is positive and descender negative in coordinate systems that grow up. */
+typedef struct hb_font_extents_t
+{
+  hb_position_t ascender; /* typographic ascender. */
+  hb_position_t descender; /* typographic descender. */
+  hb_position_t line_gap; /* suggested line spacing gap. */
+  /*< private >*/
+  hb_position_t reserved9;
+  hb_position_t reserved8;
+  hb_position_t reserved7;
+  hb_position_t reserved6;
+  hb_position_t reserved5;
+  hb_position_t reserved4;
+  hb_position_t reserved3;
+  hb_position_t reserved2;
+  hb_position_t reserved1;
+} hb_font_extents_t;
+
+/* Note that height is negative in coordinate systems that grow up. */
+typedef struct hb_glyph_extents_t
+{
+  hb_position_t x_bearing; /* left side of glyph from origin. */
+  hb_position_t y_bearing; /* top side of glyph from origin. */
+  hb_position_t width; /* distance from left to right side. */
+  hb_position_t height; /* distance from top to bottom side. */
+} hb_glyph_extents_t;
+
+/* func types */
+
+typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data,
+						       hb_font_extents_t *extents,
+						       void *user_data);
+typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t;
+typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t;
+
+
+typedef hb_bool_t (*hb_font_get_nominal_glyph_func_t) (hb_font_t *font, void *font_data,
+						       hb_codepoint_t unicode,
+						       hb_codepoint_t *glyph,
+						       void *user_data);
+typedef hb_bool_t (*hb_font_get_variation_glyph_func_t) (hb_font_t *font, void *font_data,
+							 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+							 hb_codepoint_t *glyph,
+							 void *user_data);
+
+typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void *font_data,
+							   unsigned int count,
+							   const hb_codepoint_t *first_unicode,
+							   unsigned int unicode_stride,
+							   hb_codepoint_t *first_glyph,
+							   unsigned int glyph_stride,
+							   void *user_data);
+
+
+typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
+							   hb_codepoint_t glyph,
+							   void *user_data);
+typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t;
+typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t;
+
+typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_data,
+						   unsigned int count,
+						   const hb_codepoint_t *first_glyph,
+						   unsigned glyph_stride,
+						   hb_position_t *first_advance,
+						   unsigned advance_stride,
+						   void *user_data);
+typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t;
+typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t;
+
+typedef hb_bool_t (*hb_font_get_glyph_origin_func_t) (hb_font_t *font, void *font_data,
+						      hb_codepoint_t glyph,
+						      hb_position_t *x, hb_position_t *y,
+						      void *user_data);
+typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t;
+typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t;
+
+typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void *font_data,
+							   hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
+							   void *user_data);
+typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t;
+
+
+typedef hb_bool_t (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data,
+						       hb_codepoint_t glyph,
+						       hb_glyph_extents_t *extents,
+						       void *user_data);
+typedef hb_bool_t (*hb_font_get_glyph_contour_point_func_t) (hb_font_t *font, void *font_data,
+							     hb_codepoint_t glyph, unsigned int point_index,
+							     hb_position_t *x, hb_position_t *y,
+							     void *user_data);
+
+
+typedef hb_bool_t (*hb_font_get_glyph_name_func_t) (hb_font_t *font, void *font_data,
+						    hb_codepoint_t glyph,
+						    char *name, unsigned int size,
+						    void *user_data);
+typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *font_data,
+							 const char *name, int len, /* -1 means nul-terminated */
+							 hb_codepoint_t *glyph,
+							 void *user_data);
+
+
+/* func setters */
+
+/**
+ * hb_font_funcs_set_font_h_extents_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.1.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs,
+				       hb_font_get_font_h_extents_func_t func,
+				       void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_font_v_extents_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.1.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs,
+				       hb_font_get_font_v_extents_func_t func,
+				       void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_nominal_glyph_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.2.3
+ **/
+HB_EXTERN void
+hb_font_funcs_set_nominal_glyph_func (hb_font_funcs_t *ffuncs,
+				      hb_font_get_nominal_glyph_func_t func,
+				      void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_nominal_glyphs_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 2.0.0
+ **/
+HB_EXTERN void
+hb_font_funcs_set_nominal_glyphs_func (hb_font_funcs_t *ffuncs,
+				       hb_font_get_nominal_glyphs_func_t func,
+				       void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_variation_glyph_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.2.3
+ **/
+HB_EXTERN void
+hb_font_funcs_set_variation_glyph_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_variation_glyph_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_h_advance_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_h_advance_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_v_advance_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_v_advance_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_h_advances_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.8.6
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_h_advances_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_h_advances_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_v_advances_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 1.8.6
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_v_advances_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_v_advances_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_h_origin_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
+				       hb_font_get_glyph_h_origin_func_t func,
+				       void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_v_origin_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
+				       hb_font_get_glyph_v_origin_func_t func,
+				       void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_h_kerning_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_h_kerning_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_extents_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
+				      hb_font_get_glyph_extents_func_t func,
+				      void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_contour_point_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
+					    hb_font_get_glyph_contour_point_func_t func,
+					    void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_name_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs,
+				   hb_font_get_glyph_name_func_t func,
+				   void *user_data, hb_destroy_func_t destroy);
+
+/**
+ * hb_font_funcs_set_glyph_from_name_func:
+ * @ffuncs: font functions.
+ * @func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+HB_EXTERN void
+hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs,
+					hb_font_get_glyph_from_name_func_t func,
+					void *user_data, hb_destroy_func_t destroy);
+
+/* func dispatch */
+
+HB_EXTERN hb_bool_t
+hb_font_get_h_extents (hb_font_t *font,
+		       hb_font_extents_t *extents);
+HB_EXTERN hb_bool_t
+hb_font_get_v_extents (hb_font_t *font,
+		       hb_font_extents_t *extents);
+
+HB_EXTERN hb_bool_t
+hb_font_get_nominal_glyph (hb_font_t *font,
+			   hb_codepoint_t unicode,
+			   hb_codepoint_t *glyph);
+HB_EXTERN hb_bool_t
+hb_font_get_variation_glyph (hb_font_t *font,
+			     hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+			     hb_codepoint_t *glyph);
+
+HB_EXTERN unsigned int
+hb_font_get_nominal_glyphs (hb_font_t *font,
+			    unsigned int count,
+			    const hb_codepoint_t *first_unicode,
+			    unsigned int unicode_stride,
+			    hb_codepoint_t *first_glyph,
+			    unsigned int glyph_stride);
+
+HB_EXTERN hb_position_t
+hb_font_get_glyph_h_advance (hb_font_t *font,
+			     hb_codepoint_t glyph);
+HB_EXTERN hb_position_t
+hb_font_get_glyph_v_advance (hb_font_t *font,
+			     hb_codepoint_t glyph);
+
+HB_EXTERN void
+hb_font_get_glyph_h_advances (hb_font_t* font,
+			      unsigned int count,
+			      const hb_codepoint_t *first_glyph,
+			      unsigned glyph_stride,
+			      hb_position_t *first_advance,
+			      unsigned advance_stride);
+HB_EXTERN void
+hb_font_get_glyph_v_advances (hb_font_t* font,
+			      unsigned int count,
+			      const hb_codepoint_t *first_glyph,
+			      unsigned glyph_stride,
+			      hb_position_t *first_advance,
+			      unsigned advance_stride);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_h_origin (hb_font_t *font,
+			    hb_codepoint_t glyph,
+			    hb_position_t *x, hb_position_t *y);
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_v_origin (hb_font_t *font,
+			    hb_codepoint_t glyph,
+			    hb_position_t *x, hb_position_t *y);
+
+HB_EXTERN hb_position_t
+hb_font_get_glyph_h_kerning (hb_font_t *font,
+			     hb_codepoint_t left_glyph, hb_codepoint_t right_glyph);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_extents (hb_font_t *font,
+			   hb_codepoint_t glyph,
+			   hb_glyph_extents_t *extents);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_contour_point (hb_font_t *font,
+				 hb_codepoint_t glyph, unsigned int point_index,
+				 hb_position_t *x, hb_position_t *y);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_name (hb_font_t *font,
+			hb_codepoint_t glyph,
+			char *name, unsigned int size);
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_from_name (hb_font_t *font,
+			     const char *name, int len, /* -1 means nul-terminated */
+			     hb_codepoint_t *glyph);
+
+
+/* high-level funcs, with fallback */
+
+/* Calls either hb_font_get_nominal_glyph() if variation_selector is 0,
+ * otherwise calls hb_font_get_variation_glyph(). */
+HB_EXTERN hb_bool_t
+hb_font_get_glyph (hb_font_t *font,
+		   hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+		   hb_codepoint_t *glyph);
+
+HB_EXTERN void
+hb_font_get_extents_for_direction (hb_font_t *font,
+				   hb_direction_t direction,
+				   hb_font_extents_t *extents);
+HB_EXTERN void
+hb_font_get_glyph_advance_for_direction (hb_font_t *font,
+					 hb_codepoint_t glyph,
+					 hb_direction_t direction,
+					 hb_position_t *x, hb_position_t *y);
+HB_EXTERN void
+hb_font_get_glyph_advances_for_direction (hb_font_t* font,
+					  hb_direction_t direction,
+					  unsigned int count,
+					  const hb_codepoint_t *first_glyph,
+					  unsigned glyph_stride,
+					  hb_position_t *first_advance,
+					  unsigned advance_stride);
+HB_EXTERN void
+hb_font_get_glyph_origin_for_direction (hb_font_t *font,
+					hb_codepoint_t glyph,
+					hb_direction_t direction,
+					hb_position_t *x, hb_position_t *y);
+HB_EXTERN void
+hb_font_add_glyph_origin_for_direction (hb_font_t *font,
+					hb_codepoint_t glyph,
+					hb_direction_t direction,
+					hb_position_t *x, hb_position_t *y);
+HB_EXTERN void
+hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
+					     hb_codepoint_t glyph,
+					     hb_direction_t direction,
+					     hb_position_t *x, hb_position_t *y);
+
+HB_EXTERN void
+hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
+					 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
+					 hb_direction_t direction,
+					 hb_position_t *x, hb_position_t *y);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_extents_for_origin (hb_font_t *font,
+				      hb_codepoint_t glyph,
+				      hb_direction_t direction,
+				      hb_glyph_extents_t *extents);
+
+HB_EXTERN hb_bool_t
+hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
+					    hb_codepoint_t glyph, unsigned int point_index,
+					    hb_direction_t direction,
+					    hb_position_t *x, hb_position_t *y);
+
+/* Generates gidDDD if glyph has no name. */
+HB_EXTERN void
+hb_font_glyph_to_string (hb_font_t *font,
+			 hb_codepoint_t glyph,
+			 char *s, unsigned int size);
+/* Parses gidDDD and uniUUUU strings automatically. */
+HB_EXTERN hb_bool_t
+hb_font_glyph_from_string (hb_font_t *font,
+			   const char *s, int len, /* -1 means nul-terminated */
+			   hb_codepoint_t *glyph);
+
+
+/*
+ * hb_font_t
+ */
+
+/* Fonts are very light-weight objects */
+
+HB_EXTERN hb_font_t *
+hb_font_create (hb_face_t *face);
+
+HB_EXTERN hb_font_t *
+hb_font_create_sub_font (hb_font_t *parent);
+
+HB_EXTERN hb_font_t *
+hb_font_get_empty (void);
+
+HB_EXTERN hb_font_t *
+hb_font_reference (hb_font_t *font);
+
+HB_EXTERN void
+hb_font_destroy (hb_font_t *font);
+
+HB_EXTERN hb_bool_t
+hb_font_set_user_data (hb_font_t          *font,
+		       hb_user_data_key_t *key,
+		       void *              data,
+		       hb_destroy_func_t   destroy,
+		       hb_bool_t           replace);
+
+
+HB_EXTERN void *
+hb_font_get_user_data (hb_font_t          *font,
+		       hb_user_data_key_t *key);
+
+HB_EXTERN void
+hb_font_make_immutable (hb_font_t *font);
+
+HB_EXTERN hb_bool_t
+hb_font_is_immutable (hb_font_t *font);
+
+HB_EXTERN void
+hb_font_set_parent (hb_font_t *font,
+		    hb_font_t *parent);
+
+HB_EXTERN hb_font_t *
+hb_font_get_parent (hb_font_t *font);
+
+HB_EXTERN void
+hb_font_set_face (hb_font_t *font,
+		  hb_face_t *face);
+
+HB_EXTERN hb_face_t *
+hb_font_get_face (hb_font_t *font);
+
+
+HB_EXTERN void
+hb_font_set_funcs (hb_font_t         *font,
+		   hb_font_funcs_t   *klass,
+		   void              *font_data,
+		   hb_destroy_func_t  destroy);
+
+/* Be *very* careful with this function! */
+HB_EXTERN void
+hb_font_set_funcs_data (hb_font_t         *font,
+			void              *font_data,
+			hb_destroy_func_t  destroy);
+
+
+HB_EXTERN void
+hb_font_set_scale (hb_font_t *font,
+		   int x_scale,
+		   int y_scale);
+
+HB_EXTERN void
+hb_font_get_scale (hb_font_t *font,
+		   int *x_scale,
+		   int *y_scale);
+
+/*
+ * A zero value means "no hinting in that direction"
+ */
+HB_EXTERN void
+hb_font_set_ppem (hb_font_t *font,
+		  unsigned int x_ppem,
+		  unsigned int y_ppem);
+
+HB_EXTERN void
+hb_font_get_ppem (hb_font_t *font,
+		  unsigned int *x_ppem,
+		  unsigned int *y_ppem);
+
+/*
+ * Point size per EM.  Used for optical-sizing in CoreText.
+ * A value of zero means "not set".
+ */
+HB_EXTERN void
+hb_font_set_ptem (hb_font_t *font, float ptem);
+
+HB_EXTERN float
+hb_font_get_ptem (hb_font_t *font);
+
+HB_EXTERN void
+hb_font_set_variations (hb_font_t *font,
+			const hb_variation_t *variations,
+			unsigned int variations_length);
+
+HB_EXTERN void
+hb_font_set_var_coords_design (hb_font_t *font,
+			       const float *coords,
+			       unsigned int coords_length);
+
+#ifdef HB_EXPERIMENTAL_API
+HB_EXTERN const float *
+hb_font_get_var_coords_design (hb_font_t *font,
+			       unsigned int *length);
+#endif
+
+HB_EXTERN void
+hb_font_set_var_coords_normalized (hb_font_t *font,
+				   const int *coords, /* 2.14 normalized */
+				   unsigned int coords_length);
+
+HB_EXTERN const int *
+hb_font_get_var_coords_normalized (hb_font_t *font,
+				   unsigned int *length);
+
+HB_EXTERN void
+hb_font_set_var_named_instance (hb_font_t *font,
+				unsigned instance_index);
+
+#ifdef HB_EXPERIMENTAL_API
+HB_EXTERN hb_bool_t
+hb_font_draw_glyph (hb_font_t *font, hb_codepoint_t glyph,
+		    const hb_draw_funcs_t *funcs, void *user_data);
+#endif
+
+HB_END_DECLS
+
+#endif /* HB_FONT_H */