diff options
| -rw-r--r-- | LICENSE.TXT | 4 | ||||
| -rw-r--r-- | src/autofit/afglobal.c | 2 | ||||
| -rw-r--r-- | src/autofit/afshaper.h | 2 | ||||
| -rw-r--r-- | src/autofit/autofit.c | 1 | ||||
| -rw-r--r-- | src/autofit/ft-hb.c | 106 | ||||
| -rw-r--r-- | src/autofit/ft-hb.h | 35 |
6 files changed, 148 insertions, 2 deletions
diff --git a/LICENSE.TXT b/LICENSE.TXT index ca0bff819..8b9ce9e2e 100644 --- a/LICENSE.TXT +++ b/LICENSE.TXT @@ -35,6 +35,10 @@ in earlier FreeType versions. The gzip module uses the zlib license (see `src/gzip/zlib.h`) which too is compatible to the above two licenses. +The files `src/autofit/ft-hb.c` and `src/autofit/ft-hb.h` contain code +taken almost verbatim from the HarfBuzz file `hb-ft.cc`, which uses +the 'Old MIT' license, compatible to the above two licenses. + The MD5 checksum support (only used for debugging in development builds) is in the public domain. diff --git a/src/autofit/afglobal.c b/src/autofit/afglobal.c index 8ae8592cb..3ff08e3d1 100644 --- a/src/autofit/afglobal.c +++ b/src/autofit/afglobal.c @@ -356,7 +356,7 @@ globals->scale_down_factor = 0; #ifdef FT_CONFIG_OPTION_USE_HARFBUZZ - globals->hb_font = hb_ft_font_create( face, NULL ); + globals->hb_font = _hb_ft_font_create( face, NULL ); globals->hb_buf = hb_buffer_create(); #endif diff --git a/src/autofit/afshaper.h b/src/autofit/afshaper.h index 558f03bde..110469c3d 100644 --- a/src/autofit/afshaper.h +++ b/src/autofit/afshaper.h @@ -27,7 +27,7 @@ #include <hb.h> #include <hb-ot.h> -#include <hb-ft.h> +#include "ft-hb.h" #endif diff --git a/src/autofit/autofit.c b/src/autofit/autofit.c index 3d78a9b33..af6c594d9 100644 --- a/src/autofit/autofit.c +++ b/src/autofit/autofit.c @@ -18,6 +18,7 @@ #define FT_MAKE_OPTION_SINGLE_OBJECT +#include "ft-hb.c" #include "afblue.c" #include "afcjk.c" #include "afdummy.c" diff --git a/src/autofit/ft-hb.c b/src/autofit/ft-hb.c new file mode 100644 index 000000000..b06121ff4 --- /dev/null +++ b/src/autofit/ft-hb.c @@ -0,0 +1,106 @@ +/* + * Copyright © 2009, 2023 Red Hat, Inc. + * Copyright © 2015 Google, Inc. + * + * 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, Matthias Clasen + * Google Author(s): Behdad Esfahbod + */ + +#include <freetype/freetype.h> +#include <freetype/tttables.h> + +#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ + +#include "ft-hb.h" + +/* The following three functions are a more or less verbatim + * copy of corresponding HarfBuzz code from hb-ft.cc + */ + +static hb_blob_t * +_hb_ft_reference_table (hb_face_t *face, 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) + return NULL; + + error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length); + if (error) + { + free (buffer); + return NULL; + } + + return hb_blob_create ((const char *) buffer, length, + HB_MEMORY_MODE_WRITABLE, + buffer, free); +} + +static 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) { + hb_blob_t *blob; + + blob = hb_blob_create ((const char *) ft_face->stream->base, + (unsigned int) ft_face->stream->size, + HB_MEMORY_MODE_READONLY, + ft_face, destroy); + face = hb_face_create (blob, ft_face->face_index); + hb_blob_destroy (blob); + } else { + face = hb_face_create_for_tables (_hb_ft_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; +} + +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); + return font; +} + +#endif diff --git a/src/autofit/ft-hb.h b/src/autofit/ft-hb.h new file mode 100644 index 000000000..db0b35e9c --- /dev/null +++ b/src/autofit/ft-hb.h @@ -0,0 +1,35 @@ +/* + * Copyright © 2009, 2023 Red Hat, Inc. + * Copyright © 2015 Google, Inc. + * + * 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, Matthias Clasen + * Google Author(s): Behdad Esfahbod + */ + +#ifndef FT_HB_H +#define FT_HB_H + +#include <hb.h> + +hb_font_t * _hb_ft_font_create (FT_Face ft_face, + hb_destroy_func_t destroy); + +#endif |