/* * Copyright © 2009 Red Hat, Inc. * Copyright © 2011 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.hh" #ifdef HAVE_GLIB #include "hb-glib.h" #include "hb-machinery.hh" /** * SECTION:hb-glib * @title: hb-glib * @short_description: GLib integration * @include: hb-glib.h * * Functions for using HarfBuzz with the GLib library. * * HarfBuzz supports using GLib to provide Unicode data, by attaching * GLib functions to the virtual methods in a #hb_unicode_funcs_t function * structure. **/ /** * hb_glib_script_to_script: * @script: The GUnicodeScript identifier to query * * Fetches the #hb_script_t script that corresponds to the * specified GUnicodeScript identifier. * * Return value: the #hb_script_t script found * * Since: 0.9.38 **/ hb_script_t hb_glib_script_to_script (GUnicodeScript script) { return (hb_script_t) g_unicode_script_to_iso15924 (script); } /** * hb_glib_script_from_script: * @script: The #hb_script_t to query * * Fetches the GUnicodeScript identifier that corresponds to the * specified #hb_script_t script. * * Return value: the GUnicodeScript identifier found * * Since: 0.9.38 **/ GUnicodeScript hb_glib_script_from_script (hb_script_t script) { return g_unicode_script_from_iso15924 (script); } static hb_unicode_combining_class_t hb_glib_unicode_combining_class (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t unicode, void *user_data HB_UNUSED) { return (hb_unicode_combining_class_t) g_unichar_combining_class (unicode); } static hb_unicode_general_category_t hb_glib_unicode_general_category (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t unicode, void *user_data HB_UNUSED) { /* hb_unicode_general_category_t and GUnicodeType are identical */ return (hb_unicode_general_category_t) g_unichar_type (unicode); } static hb_codepoint_t hb_glib_unicode_mirroring (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t unicode, void *user_data HB_UNUSED) { g_unichar_get_mirror_char (unicode, &unicode); return unicode; } static hb_script_t hb_glib_unicode_script (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t unicode, void *user_data HB_UNUSED) { return hb_glib_script_to_script (g_unichar_get_script (unicode)); } static hb_bool_t hb_glib_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t a, hb_codepoint_t b, hb_codepoint_t *ab, void *user_data HB_UNUSED) { #if GLIB_CHECK_VERSION(2,29,12) return g_unichar_compose (a, b, ab); #else return false; #endif } static hb_bool_t hb_glib_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t ab, hb_codepoint_t *a, hb_codepoint_t *b, void *user_data HB_UNUSED) { #if GLIB_CHECK_VERSION(2,29,12) return g_unichar_decompose (ab, a, b); #else return false; #endif } static inline void free_static_glib_funcs (); static struct hb_glib_unicode_funcs_lazy_loader_t : hb_unicode_funcs_lazy_loader_t<hb_glib_unicode_funcs_lazy_loader_t> { static hb_unicode_funcs_t *create () { hb_unicode_funcs_t *funcs = hb_unicode_funcs_create (nullptr); hb_unicode_funcs_set_combining_class_func (funcs, hb_glib_unicode_combining_class, nullptr, nullptr); hb_unicode_funcs_set_general_category_func (funcs, hb_glib_unicode_general_category, nullptr, nullptr); hb_unicode_funcs_set_mirroring_func (funcs, hb_glib_unicode_mirroring, nullptr, nullptr); hb_unicode_funcs_set_script_func (funcs, hb_glib_unicode_script, nullptr, nullptr); hb_unicode_funcs_set_compose_func (funcs, hb_glib_unicode_compose, nullptr, nullptr); hb_unicode_funcs_set_decompose_func (funcs, hb_glib_unicode_decompose, nullptr, nullptr); hb_unicode_funcs_make_immutable (funcs); hb_atexit (free_static_glib_funcs); return funcs; } } static_glib_funcs; static inline void free_static_glib_funcs () { static_glib_funcs.free_instance (); } /** * hb_glib_get_unicode_funcs: * * Fetches a Unicode-functions structure that is populated * with the appropriate GLib function for each method. * * Return value: (transfer none): a pointer to the #hb_unicode_funcs_t Unicode-functions structure * * Since: 0.9.38 **/ hb_unicode_funcs_t * hb_glib_get_unicode_funcs () { return static_glib_funcs.get_unconst (); } #if GLIB_CHECK_VERSION(2,31,10) static void _hb_g_bytes_unref (void *data) { g_bytes_unref ((GBytes *) data); } /** * hb_glib_blob_create: * @gbytes: the GBytes structure to work upon * * Creates an #hb_blob_t blob from the specified * GBytes data structure. * * Return value: (transfer full): the new #hb_blob_t blob object * * Since: 0.9.38 **/ hb_blob_t * hb_glib_blob_create (GBytes *gbytes) { gsize size = 0; gconstpointer data = g_bytes_get_data (gbytes, &size); return hb_blob_create ((const char *) data, size, HB_MEMORY_MODE_READONLY, g_bytes_ref (gbytes), _hb_g_bytes_unref); } #endif #endif
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