The Tor Browser: gfx/harfbuzz/src/hb-font.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-font.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-font.cc

Fri, 16 Jan 2015 18:13:44 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 18:13:44 +0100
branch: TOR_BUG_9701
changeset 14: 925c144e1f1f
permissions: -rw-r--r--

Integrate suggestion from review to improve consistency with existing code.

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 2012  Google, 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
  * Google Author(s): Behdad Esfahbod
  */
 #include "hb-private.hh"
 #include "hb-ot-layout-private.hh"
 #include "hb-font-private.hh"
 #include "hb-open-file-private.hh"
 #include "hb-ot-head-table.hh"
 #include "hb-ot-maxp-table.hh"
 #include "hb-cache-private.hh"
 #include <string.h>
 /*
  * hb_font_funcs_t
  */
 static hb_bool_t
 hb_font_get_glyph_nil (hb_font_t *font,
 		       void *font_data HB_UNUSED,
 		       hb_codepoint_t unicode,
 		       hb_codepoint_t variation_selector,
 		       hb_codepoint_t *glyph,
 		       void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent->get_glyph (unicode, variation_selector, glyph);
   *glyph = 0;
   return false;
 }
 static hb_position_t
 hb_font_get_glyph_h_advance_nil (hb_font_t *font,
 				 void *font_data HB_UNUSED,
 				 hb_codepoint_t glyph,
 				 void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph));
   return font->x_scale;
 }
 static hb_position_t
 hb_font_get_glyph_v_advance_nil (hb_font_t *font,
 				 void *font_data HB_UNUSED,
 				 hb_codepoint_t glyph,
 				 void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph));
   return font->y_scale;
 }
 static hb_bool_t
 hb_font_get_glyph_h_origin_nil (hb_font_t *font,
 				void *font_data HB_UNUSED,
 				hb_codepoint_t glyph,
 				hb_position_t *x,
 				hb_position_t *y,
 				void *user_data HB_UNUSED)
 {
   if (font->parent) {
     hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y);
     if (ret)
       font->parent_scale_position (x, y);
     return ret;
   }
   *x = *y = 0;
   return false;
 }
 static hb_bool_t
 hb_font_get_glyph_v_origin_nil (hb_font_t *font,
 				void *font_data HB_UNUSED,
 				hb_codepoint_t glyph,
 				hb_position_t *x,
 				hb_position_t *y,
 				void *user_data HB_UNUSED)
 {
   if (font->parent) {
     hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y);
     if (ret)
       font->parent_scale_position (x, y);
     return ret;
   }
   *x = *y = 0;
   return false;
 }
 static hb_position_t
 hb_font_get_glyph_h_kerning_nil (hb_font_t *font,
 				 void *font_data HB_UNUSED,
 				 hb_codepoint_t left_glyph,
 				 hb_codepoint_t right_glyph,
 				 void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph));
   return 0;
 }
 static hb_position_t
 hb_font_get_glyph_v_kerning_nil (hb_font_t *font,
 				 void *font_data HB_UNUSED,
 				 hb_codepoint_t top_glyph,
 				 hb_codepoint_t bottom_glyph,
 				 void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph));
   return 0;
 }
 static hb_bool_t
 hb_font_get_glyph_extents_nil (hb_font_t *font,
 			       void *font_data HB_UNUSED,
 			       hb_codepoint_t glyph,
 			       hb_glyph_extents_t *extents,
 			       void *user_data HB_UNUSED)
 {
   if (font->parent) {
     hb_bool_t ret = font->parent->get_glyph_extents (glyph, extents);
     if (ret) {
       font->parent_scale_position (&extents->x_bearing, &extents->y_bearing);
       font->parent_scale_distance (&extents->width, &extents->height);
     }
     return ret;
   }
   memset (extents, 0, sizeof (*extents));
   return false;
 }
 static hb_bool_t
 hb_font_get_glyph_contour_point_nil (hb_font_t *font,
 				     void *font_data HB_UNUSED,
 				     hb_codepoint_t glyph,
 				     unsigned int point_index,
 				     hb_position_t *x,
 				     hb_position_t *y,
 				     void *user_data HB_UNUSED)
 {
   if (font->parent) {
     hb_bool_t ret = font->parent->get_glyph_contour_point (glyph, point_index, x, y);
     if (ret)
       font->parent_scale_position (x, y);
     return ret;
   }
   *x = *y = 0;
   return false;
 }
 static hb_bool_t
 hb_font_get_glyph_name_nil (hb_font_t *font,
 			    void *font_data HB_UNUSED,
 			    hb_codepoint_t glyph,
 			    char *name, unsigned int size,
 			    void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent->get_glyph_name (glyph, name, size);
   if (size) *name = '\0';
   return false;
 }
 static hb_bool_t
 hb_font_get_glyph_from_name_nil (hb_font_t *font,
 				 void *font_data HB_UNUSED,
 				 const char *name, int len, /* -1 means nul-terminated */
 				 hb_codepoint_t *glyph,
 				 void *user_data HB_UNUSED)
 {
   if (font->parent)
     return font->parent->get_glyph_from_name (name, len, glyph);
   *glyph = 0;
   return false;
 }
 static const hb_font_funcs_t _hb_font_funcs_nil = {
   HB_OBJECT_HEADER_STATIC,
   true, /* immutable */
   {
 #define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil,
     HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_FONT_FUNC_IMPLEMENT
   }
 };
 /**
  * hb_font_funcs_create: (Xconstructor)
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_font_funcs_t *
 hb_font_funcs_create (void)
 {
   hb_font_funcs_t *ffuncs;
   if (!(ffuncs = hb_object_create<hb_font_funcs_t> ()))
     return hb_font_funcs_get_empty ();
   ffuncs->get = _hb_font_funcs_nil.get;
   return ffuncs;
 }
 /**
  * hb_font_funcs_get_empty:
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_font_funcs_t *
 hb_font_funcs_get_empty (void)
 {
   return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil);
 }
 /**
  * hb_font_funcs_reference: (skip)
  * @ffuncs: font functions.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_font_funcs_t *
 hb_font_funcs_reference (hb_font_funcs_t *ffuncs)
 {
   return hb_object_reference (ffuncs);
 }
 /**
  * hb_font_funcs_destroy: (skip)
  * @ffuncs: font functions.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_funcs_destroy (hb_font_funcs_t *ffuncs)
 {
   if (!hb_object_destroy (ffuncs)) return;
 #define HB_FONT_FUNC_IMPLEMENT(name) if (ffuncs->destroy.name) \
   ffuncs->destroy.name (ffuncs->user_data.name);
   HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_FONT_FUNC_IMPLEMENT
   free (ffuncs);
 }
 /**
  * hb_font_funcs_set_user_data: (skip)
  * @ffuncs: font functions.
  * @key:
  * @data:
  * @destroy:
  * @replace:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return hb_object_set_user_data (ffuncs, key, data, destroy, replace);
 }
 /**
  * hb_font_funcs_get_user_data: (skip)
  * @ffuncs: font functions.
  * @key:
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 void *
 hb_font_funcs_get_user_data (hb_font_funcs_t    *ffuncs,
 			     hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (ffuncs, key);
 }
 /**
  * hb_font_funcs_make_immutable:
  * @ffuncs: font functions.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs)
 {
   if (hb_object_is_inert (ffuncs))
     return;
   ffuncs->immutable = true;
 }
 /**
  * hb_font_funcs_is_immutable:
  * @ffuncs: font functions.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs)
 {
   return ffuncs->immutable;
 }
 #define HB_FONT_FUNC_IMPLEMENT(name) \
                                                                          \
 void                                                                     \
 hb_font_funcs_set_##name##_func (hb_font_funcs_t             *ffuncs,    \
                                  hb_font_get_##name##_func_t  func,      \
                                  void                        *user_data, \
                                  hb_destroy_func_t            destroy)   \
 {                                                                        \
   if (ffuncs->immutable) {                                               \
     if (destroy)                                                         \
       destroy (user_data);                                               \
     return;                                                              \
   }                                                                      \
                                                                          \
   if (ffuncs->destroy.name)                                              \
     ffuncs->destroy.name (ffuncs->user_data.name);                       \
                                                                          \
   if (func) {                                                            \
     ffuncs->get.name = func;                                             \
     ffuncs->user_data.name = user_data;                                  \
     ffuncs->destroy.name = destroy;                                      \
   } else {                                                               \
     ffuncs->get.name = hb_font_get_##name##_nil;                         \
     ffuncs->user_data.name = NULL;                                       \
     ffuncs->destroy.name = NULL;                                         \
   }                                                                      \
 }
 HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_FONT_FUNC_IMPLEMENT
 /* Public getters */
 /**
  * hb_font_get_glyph:
  * @font: a font.
  * @unicode:
  * @variation_selector:
  * @glyph: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_font_get_glyph (hb_font_t *font,
 		   hb_codepoint_t unicode, hb_codepoint_t variation_selector,
 		   hb_codepoint_t *glyph)
 {
   return font->get_glyph (unicode, variation_selector, glyph);
 }
 /**
  * hb_font_get_glyph_h_advance:
  * @font: a font.
  * @glyph:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_position_t
 hb_font_get_glyph_h_advance (hb_font_t *font,
 			     hb_codepoint_t glyph)
 {
   return font->get_glyph_h_advance (glyph);
 }
 /**
  * hb_font_get_glyph_v_advance:
  * @font: a font.
  * @glyph:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_position_t
 hb_font_get_glyph_v_advance (hb_font_t *font,
 			     hb_codepoint_t glyph)
 {
   return font->get_glyph_v_advance (glyph);
 }
 /**
  * hb_font_get_glyph_h_origin:
  * @font: a font.
  * @glyph:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_h_origin (glyph, x, y);
 }
 /**
  * hb_font_get_glyph_v_origin:
  * @font: a font.
  * @glyph:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_v_origin (glyph, x, y);
 }
 /**
  * hb_font_get_glyph_h_kerning:
  * @font: a font.
  * @left_glyph:
  * @right_glyph:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_position_t
 hb_font_get_glyph_h_kerning (hb_font_t *font,
 			     hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
 {
   return font->get_glyph_h_kerning (left_glyph, right_glyph);
 }
 /**
  * hb_font_get_glyph_v_kerning:
  * @font: a font.
  * @top_glyph:
  * @bottom_glyph:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_position_t
 hb_font_get_glyph_v_kerning (hb_font_t *font,
 			     hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph)
 {
   return font->get_glyph_v_kerning (top_glyph, bottom_glyph);
 }
 /**
  * hb_font_get_glyph_extents:
  * @font: a font.
  * @glyph:
  * @extents: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_font_get_glyph_extents (hb_font_t *font,
 			   hb_codepoint_t glyph,
 			   hb_glyph_extents_t *extents)
 {
   return font->get_glyph_extents (glyph, extents);
 }
 /**
  * hb_font_get_glyph_contour_point:
  * @font: a font.
  * @glyph:
  * @point_index:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_contour_point (glyph, point_index, x, y);
 }
 /**
  * hb_font_get_glyph_name:
  * @font: a font.
  * @glyph:
  * @name: (array length=size):
  * @size:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_font_get_glyph_name (hb_font_t *font,
 			hb_codepoint_t glyph,
 			char *name, unsigned int size)
 {
   return font->get_glyph_name (glyph, name, size);
 }
 /**
  * hb_font_get_glyph_from_name:
  * @font: a font.
  * @name: (array length=len):
  * @len:
  * @glyph: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_from_name (name, len, glyph);
 }
 /* A bit higher-level, and with fallback */
 /**
  * hb_font_get_glyph_advance_for_direction:
  * @font: a font.
  * @glyph:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_advance_for_direction (glyph, direction, x, y);
 }
 /**
  * hb_font_get_glyph_origin_for_direction:
  * @font: a font.
  * @glyph:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_origin_for_direction (glyph, direction, x, y);
 }
 /**
  * hb_font_add_glyph_origin_for_direction:
  * @font: a font.
  * @glyph:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Since: 1.0
  **/
 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)
 {
   return font->add_glyph_origin_for_direction (glyph, direction, x, y);
 }
 /**
  * hb_font_subtract_glyph_origin_for_direction:
  * @font: a font.
  * @glyph:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Since: 1.0
  **/
 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)
 {
   return font->subtract_glyph_origin_for_direction (glyph, direction, x, y);
 }
 /**
  * hb_font_get_glyph_kerning_for_direction:
  * @font: a font.
  * @first_glyph:
  * @second_glyph:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y);
 }
 /**
  * hb_font_get_glyph_extents_for_origin:
  * @font: a font.
  * @glyph:
  * @direction:
  * @extents: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_extents_for_origin (glyph, direction, extents);
 }
 /**
  * hb_font_get_glyph_contour_point_for_origin:
  * @font: a font.
  * @glyph:
  * @point_index:
  * @direction:
  * @x: (out):
  * @y: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y);
 }
 /* Generates gidDDD if glyph has no name. */
 /**
  * hb_font_glyph_to_string:
  * @font: a font.
  * @glyph:
  * @s: (array length=size):
  * @size:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_glyph_to_string (hb_font_t *font,
 			 hb_codepoint_t glyph,
 			 char *s, unsigned int size)
 {
   font->glyph_to_string (glyph, s, size);
 }
 /* Parses gidDDD and uniUUUU strings automatically. */
 /**
  * hb_font_glyph_from_string:
  * @font: a font.
  * @s: (array length=len):
  * @len:
  * @glyph: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return font->glyph_from_string (s, len, glyph);
 }
 /*
  * hb_font_t
  */
 /**
  * hb_font_create: (Xconstructor)
  * @face: a face.
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_font_t *
 hb_font_create (hb_face_t *face)
 {
   hb_font_t *font;
   if (unlikely (!face))
     face = hb_face_get_empty ();
   if (unlikely (hb_object_is_inert (face)))
     return hb_font_get_empty ();
   if (!(font = hb_object_create<hb_font_t> ()))
     return hb_font_get_empty ();
   hb_face_make_immutable (face);
   font->face = hb_face_reference (face);
   font->klass = hb_font_funcs_get_empty ();
   return font;
 }
 /**
  * hb_font_create_sub_font:
  * @parent: parent font.
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_font_t *
 hb_font_create_sub_font (hb_font_t *parent)
 {
   if (unlikely (!parent))
     return hb_font_get_empty ();
   hb_font_t *font = hb_font_create (parent->face);
   if (unlikely (hb_object_is_inert (font)))
     return font;
   hb_font_make_immutable (parent);
   font->parent = hb_font_reference (parent);
   font->x_scale = parent->x_scale;
   font->y_scale = parent->y_scale;
   font->x_ppem = parent->x_ppem;
   font->y_ppem = parent->y_ppem;
   return font;
 }
 /**
  * hb_font_get_empty:
  *
  *
  *
  * Return value: (transfer full)
  *
  * Since: 1.0
  **/
 hb_font_t *
 hb_font_get_empty (void)
 {
   static const hb_font_t _hb_font_nil = {
     HB_OBJECT_HEADER_STATIC,
     true, /* immutable */
     NULL, /* parent */
     const_cast<hb_face_t *> (&_hb_face_nil),
 , /* x_scale */
 , /* y_scale */
 , /* x_ppem */
 , /* y_ppem */
     const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil), /* klass */
     NULL, /* user_data */
     NULL, /* destroy */
     {
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
 #include "hb-shaper-list.hh"
 #undef HB_SHAPER_IMPLEMENT
     }
   };
   return const_cast<hb_font_t *> (&_hb_font_nil);
 }
 /**
  * hb_font_reference: (skip)
  * @font: a font.
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_font_t *
 hb_font_reference (hb_font_t *font)
 {
   return hb_object_reference (font);
 }
 /**
  * hb_font_destroy: (skip)
  * @font: a font.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_destroy (hb_font_t *font)
 {
   if (!hb_object_destroy (font)) return;
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, font);
 #include "hb-shaper-list.hh"
 #undef HB_SHAPER_IMPLEMENT
   if (font->destroy)
     font->destroy (font->user_data);
   hb_font_destroy (font->parent);
   hb_face_destroy (font->face);
   hb_font_funcs_destroy (font->klass);
   free (font);
 }
 /**
  * hb_font_set_user_data: (skip)
  * @font: a font.
  * @key:
  * @data:
  * @destroy:
  * @replace:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 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)
 {
   return hb_object_set_user_data (font, key, data, destroy, replace);
 }
 /**
  * hb_font_get_user_data: (skip)
  * @font: a font.
  * @key:
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 void *
 hb_font_get_user_data (hb_font_t          *font,
 		       hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (font, key);
 }
 /**
  * hb_font_make_immutable:
  * @font: a font.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_make_immutable (hb_font_t *font)
 {
   if (hb_object_is_inert (font))
     return;
   font->immutable = true;
 }
 /**
  * hb_font_is_immutable:
  * @font: a font.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_font_is_immutable (hb_font_t *font)
 {
   return font->immutable;
 }
 /**
  * hb_font_get_parent:
  * @font: a font.
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 hb_font_t *
 hb_font_get_parent (hb_font_t *font)
 {
   return font->parent;
 }
 /**
  * hb_font_get_face:
  * @font: a font.
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 hb_face_t *
 hb_font_get_face (hb_font_t *font)
 {
   return font->face;
 }
 /**
  * hb_font_set_funcs:
  * @font: a font.
  * @klass: (closure font_data) (destroy destroy) (scope notified):
  * @font_data:
  * @destroy:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_set_funcs (hb_font_t         *font,
 		   hb_font_funcs_t   *klass,
 		   void              *font_data,
 		   hb_destroy_func_t  destroy)
 {
   if (font->immutable) {
     if (destroy)
       destroy (font_data);
     return;
   }
   if (font->destroy)
     font->destroy (font->user_data);
   if (!klass)
     klass = hb_font_funcs_get_empty ();
   hb_font_funcs_reference (klass);
   hb_font_funcs_destroy (font->klass);
   font->klass = klass;
   font->user_data = font_data;
   font->destroy = destroy;
 }
 /**
  * hb_font_set_funcs_data:
  * @font: a font.
  * @font_data: (destroy destroy) (scope notified):
  * @destroy:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_set_funcs_data (hb_font_t         *font,
 		        void              *font_data,
 		        hb_destroy_func_t  destroy)
 {
   /* Destroy user_data? */
   if (font->immutable) {
     if (destroy)
       destroy (font_data);
     return;
   }
   if (font->destroy)
     font->destroy (font->user_data);
   font->user_data = font_data;
   font->destroy = destroy;
 }
 /**
  * hb_font_set_scale:
  * @font: a font.
  * @x_scale:
  * @y_scale:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_set_scale (hb_font_t *font,
 		   int x_scale,
 		   int y_scale)
 {
   if (font->immutable)
     return;
   font->x_scale = x_scale;
   font->y_scale = y_scale;
 }
 /**
  * hb_font_get_scale:
  * @font: a font.
  * @x_scale: (out):
  * @y_scale: (out):
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_get_scale (hb_font_t *font,
 		   int *x_scale,
 		   int *y_scale)
 {
   if (x_scale) *x_scale = font->x_scale;
   if (y_scale) *y_scale = font->y_scale;
 }
 /**
  * hb_font_set_ppem:
  * @font: a font.
  * @x_ppem:
  * @y_ppem:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_set_ppem (hb_font_t *font,
 		  unsigned int x_ppem,
 		  unsigned int y_ppem)
 {
   if (font->immutable)
     return;
   font->x_ppem = x_ppem;
   font->y_ppem = y_ppem;
 }
 /**
  * hb_font_get_ppem:
  * @font: a font.
  * @x_ppem: (out):
  * @y_ppem: (out):
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_font_get_ppem (hb_font_t *font,
 		  unsigned int *x_ppem,
 		  unsigned int *y_ppem)
 {
   if (x_ppem) *x_ppem = font->x_ppem;
   if (y_ppem) *y_ppem = font->y_ppem;
 }

The Tor Browser / annotate

gfx/harfbuzz/src/hb-font.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-font.cc