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diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ft.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ft.cc
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--- a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ft.cc
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-/*
- * Copyright © 2009 Red Hat, Inc.
- * Copyright © 2009 Keith Stribley
- *
- * 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
- */
-
-#include "hb-private.hh"
-
-#include "hb-ft.h"
-
-#include "hb-font-private.hh"
-
-#include FT_ADVANCES_H
-#include FT_TRUETYPE_TABLES_H
-
-
-
-#ifndef HB_DEBUG_FT
-#define HB_DEBUG_FT (HB_DEBUG+0)
-#endif
-
-
-/* TODO:
- *
- * In general, this file does a fine job of what it's supposed to do.
- * There are, however, things that need more work:
- *
- * - We don't handle any load_flags. That definitely has API implications. :(
- * I believe hb_ft_font_create() should take load_flags input.
- * In particular, FT_Get_Advance() without the NO_HINTING flag seems to be
- * buggy.
- *
- * - We don't handle / allow for emboldening / obliqueing.
- *
- * - In the future, we should add constructors to create fonts in font space?
- *
- * - FT_Load_Glyph() is exteremely costly. Do something about it?
- */
-
-
-static hb_bool_t
-hb_ft_get_glyph (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t unicode,
- hb_codepoint_t variation_selector,
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
-
-{
- FT_Face ft_face = (FT_Face) font_data;
-
-#ifdef HAVE_FT_FACE_GETCHARVARIANTINDEX
- if (unlikely (variation_selector)) {
- *glyph = FT_Face_GetCharVariantIndex (ft_face, unicode, variation_selector);
- if (*glyph)
- return true;
- }
-#endif
-
- *glyph = FT_Get_Char_Index (ft_face, unicode);
- return *glyph != 0;
-}
-
-static hb_position_t
-hb_ft_get_glyph_h_advance (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
- FT_Fixed v;
-
- if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &v)))
- return 0;
-
- return v >> 10;
-}
-
-static hb_position_t
-hb_ft_get_glyph_v_advance (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING | FT_LOAD_VERTICAL_LAYOUT;
- FT_Fixed v;
-
- if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &v)))
- return 0;
-
- /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
- * have a Y growing upward. Hence the extra negation. */
- return -v >> 10;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_h_origin (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t glyph HB_UNUSED,
- hb_position_t *x HB_UNUSED,
- hb_position_t *y HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* We always work in the horizontal coordinates. */
- return true;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_v_origin (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
- return false;
-
- /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
- * have a Y growing upward. Hence the extra negation. */
- *x = ft_face->glyph->metrics.horiBearingX - ft_face->glyph->metrics.vertBearingX;
- *y = ft_face->glyph->metrics.horiBearingY - (-ft_face->glyph->metrics.vertBearingY);
-
- return true;
-}
-
-static hb_position_t
-hb_ft_get_glyph_h_kerning (hb_font_t *font,
- void *font_data,
- hb_codepoint_t left_glyph,
- hb_codepoint_t right_glyph,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- FT_Vector kerningv;
-
- FT_Kerning_Mode mode = font->x_ppem ? FT_KERNING_DEFAULT : FT_KERNING_UNFITTED;
- if (FT_Get_Kerning (ft_face, left_glyph, right_glyph, mode, &kerningv))
- return 0;
-
- return kerningv.x;
-}
-
-static hb_position_t
-hb_ft_get_glyph_v_kerning (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t top_glyph HB_UNUSED,
- hb_codepoint_t bottom_glyph HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* FreeType API doesn't support vertical kerning */
- return 0;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_extents (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- hb_glyph_extents_t *extents,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
- return false;
-
- extents->x_bearing = ft_face->glyph->metrics.horiBearingX;
- extents->y_bearing = ft_face->glyph->metrics.horiBearingY;
- extents->width = ft_face->glyph->metrics.width;
- extents->height = -ft_face->glyph->metrics.height;
- return true;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_contour_point (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- unsigned int point_index,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
- return false;
-
- if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE))
- return false;
-
- if (unlikely (point_index >= (unsigned int) ft_face->glyph->outline.n_points))
- return false;
-
- *x = ft_face->glyph->outline.points[point_index].x;
- *y = ft_face->glyph->outline.points[point_index].y;
-
- return true;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- char *name, unsigned int size,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
-
- hb_bool_t ret = !FT_Get_Glyph_Name (ft_face, glyph, name, size);
- if (ret && (size && !*name))
- ret = false;
-
- return ret;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_from_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- const char *name, int len, /* -1 means nul-terminated */
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
-{
- FT_Face ft_face = (FT_Face) font_data;
-
- if (len < 0)
- *glyph = FT_Get_Name_Index (ft_face, (FT_String *) name);
- else {
- /* Make a nul-terminated version. */
- char buf[128];
- len = MIN (len, (int) sizeof (buf) - 1);
- strncpy (buf, name, len);
- buf[len] = '\0';
- *glyph = FT_Get_Name_Index (ft_face, buf);
- }
-
- return *glyph != 0;
-}
-
-
-static hb_font_funcs_t *
-_hb_ft_get_font_funcs (void)
-{
- static const hb_font_funcs_t ft_ffuncs = {
- HB_OBJECT_HEADER_STATIC,
-
- true, /* immutable */
-
- {
-#define HB_FONT_FUNC_IMPLEMENT(name) hb_ft_get_##name,
- HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
-#undef HB_FONT_FUNC_IMPLEMENT
- }
- };
-
- return const_cast<hb_font_funcs_t *> (&ft_ffuncs);
-}
-
-
-static hb_blob_t *
-reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
-{
- FT_Face ft_face = (FT_Face) user_data;
- FT_Byte *buffer;
- FT_ULong length = 0;
- FT_Error error;
-
- /* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
-
- error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length);
- if (error)
- return NULL;
-
- buffer = (FT_Byte *) malloc (length);
- if (buffer == NULL)
- return NULL;
-
- error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
- if (error)
- return NULL;
-
- return hb_blob_create ((const char *) buffer, length,
- HB_MEMORY_MODE_WRITABLE,
- buffer, free);
-}
-
-
-hb_face_t *
-hb_ft_face_create (FT_Face ft_face,
- hb_destroy_func_t destroy)
-{
- hb_face_t *face;
-
- if (ft_face->stream->read == NULL) {
- hb_blob_t *blob;
-
- blob = hb_blob_create ((const char *) ft_face->stream->base,
- (unsigned int) ft_face->stream->size,
- /* TODO: We assume that it's mmap()'ed, but FreeType code
- * suggests that there are cases we reach here but font is
- * not mmapped. For example, when mmap() fails. No idea
- * how to deal with it better here. */
- HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE,
- ft_face, destroy);
- face = hb_face_create (blob, ft_face->face_index);
- hb_blob_destroy (blob);
- } else {
- face = hb_face_create_for_tables (reference_table, ft_face, destroy);
- }
-
- hb_face_set_index (face, ft_face->face_index);
- hb_face_set_upem (face, ft_face->units_per_EM);
-
- return face;
-}
-
-static void
-hb_ft_face_finalize (FT_Face ft_face)
-{
- hb_face_destroy ((hb_face_t *) ft_face->generic.data);
-}
-
-hb_face_t *
-hb_ft_face_create_cached (FT_Face ft_face)
-{
- if (unlikely (!ft_face->generic.data || ft_face->generic.finalizer != (FT_Generic_Finalizer) hb_ft_face_finalize))
- {
- if (ft_face->generic.finalizer)
- ft_face->generic.finalizer (ft_face);
-
- ft_face->generic.data = hb_ft_face_create (ft_face, NULL);
- ft_face->generic.finalizer = (FT_Generic_Finalizer) hb_ft_face_finalize;
- }
-
- return hb_face_reference ((hb_face_t *) ft_face->generic.data);
-}
-
-static void
-_do_nothing (void)
-{
-}
-
-
-hb_font_t *
-hb_ft_font_create (FT_Face ft_face,
- hb_destroy_func_t destroy)
-{
- hb_font_t *font;
- hb_face_t *face;
-
- face = hb_ft_face_create (ft_face, destroy);
- font = hb_font_create (face);
- hb_face_destroy (face);
- hb_font_set_funcs (font,
- _hb_ft_get_font_funcs (),
- ft_face, (hb_destroy_func_t) _do_nothing);
- hb_font_set_scale (font,
- ((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM) >> 16,
- ((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM) >> 16);
- hb_font_set_ppem (font,
- ft_face->size->metrics.x_ppem,
- ft_face->size->metrics.y_ppem);
-
- return font;
-}
-
-
-/* Thread-safe, lock-free, FT_Library */
-
-static FT_Library ft_library;
-
-static inline
-void free_ft_library (void)
-{
- FT_Done_FreeType (ft_library);
-}
-
-static FT_Library
-get_ft_library (void)
-{
-retry:
- FT_Library library = (FT_Library) hb_atomic_ptr_get (&ft_library);
-
- if (unlikely (!library))
- {
- /* Not found; allocate one. */
- if (FT_Init_FreeType (&library))
- return NULL;
-
- if (!hb_atomic_ptr_cmpexch (&ft_library, NULL, library)) {
- FT_Done_FreeType (library);
- goto retry;
- }
-
-#ifdef HAVE_ATEXIT
- atexit (free_ft_library); /* First person registers atexit() callback. */
-#endif
- }
-
- return library;
-}
-
-static void
-_release_blob (FT_Face ft_face)
-{
- hb_blob_destroy ((hb_blob_t *) ft_face->generic.data);
-}
-
-void
-hb_ft_font_set_funcs (hb_font_t *font)
-{
- hb_blob_t *blob = hb_face_reference_blob (font->face);
- unsigned int blob_length;
- const char *blob_data = hb_blob_get_data (blob, &blob_length);
- if (unlikely (!blob_length))
- DEBUG_MSG (FT, font, "Font face has empty blob");
-
- FT_Face ft_face = NULL;
- FT_Error err = FT_New_Memory_Face (get_ft_library (),
- (const FT_Byte *) blob_data,
- blob_length,
- hb_face_get_index (font->face),
- &ft_face);
-
- if (unlikely (err)) {
- hb_blob_destroy (blob);
- DEBUG_MSG (FT, font, "Font face FT_New_Memory_Face() failed");
- return;
- }
-
- FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE);
-
- assert (font->y_scale >= 0);
- FT_Set_Char_Size (ft_face,
- font->x_scale, font->y_scale,
- 0, 0);
-#if 0
- font->x_ppem * 72 * 64 / font->x_scale,
- font->y_ppem * 72 * 64 / font->y_scale);
-#endif
-
- ft_face->generic.data = blob;
- ft_face->generic.finalizer = (FT_Generic_Finalizer) _release_blob;
-
- hb_font_set_funcs (font,
- _hb_ft_get_font_funcs (),
- ft_face,
- (hb_destroy_func_t) FT_Done_Face);
-}
-
-FT_Face
-hb_ft_font_get_face (hb_font_t *font)
-{
- if (font->destroy == (hb_destroy_func_t) FT_Done_Face ||
- font->destroy == (hb_destroy_func_t) _do_nothing)
- return (FT_Face) font->user_data;
-
- return NULL;
-}