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      1 /*
      2  * Copyright  2011  Google, Inc.
      3  *
      4  *  This is part of HarfBuzz, a text shaping library.
      5  *
      6  * Permission is hereby granted, without written agreement and without
      7  * license or royalty fees, to use, copy, modify, and distribute this
      8  * software and its documentation for any purpose, provided that the
      9  * above copyright notice and the following two paragraphs appear in
     10  * all copies of this software.
     11  *
     12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
     13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
     14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
     15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
     16  * DAMAGE.
     17  *
     18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
     19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
     20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
     21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
     22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
     23  *
     24  * Google Author(s): Behdad Esfahbod
     25  */
     26 
     27 #include "hb.hh"
     28 
     29 
     30 /**
     31  * SECTION:hb-gobject
     32  * @title: hb-gobject
     33  * @short_description: GObject integration
     34  * @include: hb-gobject.h
     35  *
     36  * Functions for using HarfBuzz with the GObject library to provide
     37  * type data.
     38  **/
     39 
     40 
     41 /* g++ didn't like older gtype.h gcc-only code path. */
     42 #include <glib.h>
     43 #if !GLIB_CHECK_VERSION(2,29,16)
     44 #undef __GNUC__
     45 #undef __GNUC_MINOR__
     46 #define __GNUC__ 2
     47 #define __GNUC_MINOR__ 6
     48 #endif
     49 
     50 #include "hb-gobject.h"
     51 
     52 #define HB_DEFINE_BOXED_TYPE(name,copy_func,free_func) \
     53 GType \
     54 hb_gobject_##name##_get_type () \
     55 { \
     56    static gsize type_id = 0; \
     57    if (g_once_init_enter (&type_id)) { \
     58       GType id = g_boxed_type_register_static (g_intern_static_string ("hb_" #name "_t"), \
     59 					       (GBoxedCopyFunc) copy_func, \
     60 					       (GBoxedFreeFunc) free_func); \
     61       g_once_init_leave (&type_id, id); \
     62    } \
     63    return type_id; \
     64 }
     65 
     66 #define HB_DEFINE_OBJECT_TYPE(name) \
     67 	HB_DEFINE_BOXED_TYPE (name, hb_##name##_reference, hb_##name##_destroy);
     68 
     69 #define HB_DEFINE_VALUE_TYPE(name) \
     70 	static hb_##name##_t *_hb_##name##_reference (const hb_##name##_t *l) \
     71 	{ \
     72 	  hb_##name##_t *c = (hb_##name##_t *) calloc (1, sizeof (hb_##name##_t)); \
     73 	  if (unlikely (!c)) return nullptr; \
     74 	  *c = *l; \
     75 	  return c; \
     76 	} \
     77 	static void _hb_##name##_destroy (hb_##name##_t *l) { free (l); } \
     78 	HB_DEFINE_BOXED_TYPE (name, _hb_##name##_reference, _hb_##name##_destroy);
     79 
     80 HB_DEFINE_OBJECT_TYPE (buffer)
     81 HB_DEFINE_OBJECT_TYPE (blob)
     82 HB_DEFINE_OBJECT_TYPE (face)
     83 HB_DEFINE_OBJECT_TYPE (font)
     84 HB_DEFINE_OBJECT_TYPE (font_funcs)
     85 HB_DEFINE_OBJECT_TYPE (set)
     86 HB_DEFINE_OBJECT_TYPE (map)
     87 HB_DEFINE_OBJECT_TYPE (shape_plan)
     88 HB_DEFINE_OBJECT_TYPE (unicode_funcs)
     89 HB_DEFINE_VALUE_TYPE (feature)
     90 HB_DEFINE_VALUE_TYPE (glyph_info)
     91 HB_DEFINE_VALUE_TYPE (glyph_position)
     92 HB_DEFINE_VALUE_TYPE (segment_properties)
     93 HB_DEFINE_VALUE_TYPE (user_data_key)
     94 
     95 HB_DEFINE_VALUE_TYPE (ot_math_glyph_variant)
     96 HB_DEFINE_VALUE_TYPE (ot_math_glyph_part)
     97