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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
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/*
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* Copyright © 2009, 2023 Red Hat, Inc.
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* Copyright © 2015 Google, Inc.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod, Matthias Clasen
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* Google Author(s): Behdad Esfahbod
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*/
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#include <freetype/freetype.h>
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#include <freetype/tttables.h>
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#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ
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#include "ft-hb.h"
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/* The following three functions are a more or less verbatim
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* copy of corresponding HarfBuzz code from hb-ft.cc
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*/
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static hb_blob_t *
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hb_ft_reference_table_ (hb_face_t *face, hb_tag_t tag, void *user_data)
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{
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FT_Face ft_face = (FT_Face) user_data;
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FT_Byte *buffer;
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FT_ULong length = 0;
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FT_Error error;
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FT_UNUSED (face);
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/* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
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error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length);
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if (error)
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return NULL;
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buffer = (FT_Byte *) ft_smalloc (length);
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if (!buffer)
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return NULL;
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error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
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if (error)
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{
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free (buffer);
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return NULL;
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}
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return hb_blob_create ((const char *) buffer, length,
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HB_MEMORY_MODE_WRITABLE,
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buffer, ft_sfree);
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}
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static hb_face_t *
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hb_ft_face_create_ (FT_Face ft_face,
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hb_destroy_func_t destroy)
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{
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hb_face_t *face;
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if (!ft_face->stream->read) {
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hb_blob_t *blob;
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blob = hb_blob_create ((const char *) ft_face->stream->base,
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(unsigned int) ft_face->stream->size,
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HB_MEMORY_MODE_READONLY,
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ft_face, destroy);
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face = hb_face_create (blob, ft_face->face_index);
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hb_blob_destroy (blob);
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} else {
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face = hb_face_create_for_tables (hb_ft_reference_table_, ft_face, destroy);
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}
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hb_face_set_index (face, ft_face->face_index);
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hb_face_set_upem (face, ft_face->units_per_EM);
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return face;
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}
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FT_LOCAL_DEF(hb_font_t *)
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hb_ft_font_create_ (FT_Face ft_face,
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hb_destroy_func_t destroy)
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{
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hb_font_t *font;
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hb_face_t *face;
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face = hb_ft_face_create_ (ft_face, destroy);
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font = hb_font_create (face);
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hb_face_destroy (face);
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return font;
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}
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#else /* !FT_CONFIG_OPTION_USE_HARFBUZZ */
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/* ANSI C doesn't like empty source files */
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typedef int ft_hb_dummy_;
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#endif /* !FT_CONFIG_OPTION_USE_HARFBUZZ */
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/* END */
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