HarfBuzz text shaping engine
http://harfbuzz.github.io/
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142 lines
3.4 KiB
142 lines
3.4 KiB
/* |
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* Copyright © 2011 Google, Inc. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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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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* Google Author(s): Behdad Esfahbod |
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*/ |
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#ifndef FACE_OPTIONS_HH |
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#define FACE_OPTIONS_HH |
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#include "options.hh" |
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struct face_options_t |
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{ |
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~face_options_t () |
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{ |
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g_free (font_file); |
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} |
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void set_face (hb_face_t *face_) |
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{ face = face_; } |
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void add_options (option_parser_t *parser); |
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void post_parse (GError **error); |
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static struct cache_t |
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{ |
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~cache_t () |
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{ |
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g_free (font_path); |
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hb_blob_destroy (blob); |
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hb_face_destroy (face); |
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} |
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char *font_path = nullptr; |
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hb_blob_t *blob = nullptr; |
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unsigned face_index = (unsigned) -1; |
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hb_face_t *face = nullptr; |
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} cache; |
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char *font_file = nullptr; |
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unsigned face_index = 0; |
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hb_blob_t *blob = nullptr; |
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hb_face_t *face = nullptr; |
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}; |
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face_options_t::cache_t face_options_t::cache {}; |
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void |
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face_options_t::post_parse (GError **error) |
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{ |
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if (!font_file) |
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{ |
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED, |
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"No font file set"); |
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return; |
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} |
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assert (font_file); |
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const char *font_path = font_file; |
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if (0 == strcmp (font_path, "-")) |
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{ |
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#if defined(_WIN32) || defined(__CYGWIN__) |
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setmode (fileno (stdin), O_BINARY); |
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font_path = "STDIN"; |
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#else |
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font_path = "/dev/stdin"; |
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#endif |
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} |
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if (!cache.font_path || 0 != strcmp (cache.font_path, font_path)) |
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{ |
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hb_blob_destroy (cache.blob); |
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cache.blob = hb_blob_create_from_file_or_fail (font_path); |
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free ((char *) cache.font_path); |
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cache.font_path = g_strdup (font_path); |
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if (!cache.blob) |
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{ |
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED, |
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"%s: Failed reading file", font_path); |
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return; |
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} |
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hb_face_destroy (cache.face); |
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cache.face = nullptr; |
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cache.face_index = (unsigned) -1; |
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} |
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if (cache.face_index != face_index) |
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{ |
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hb_face_destroy (cache.face); |
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cache.face = hb_face_create (cache.blob, face_index); |
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cache.face_index = face_index; |
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} |
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blob = cache.blob; |
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face = cache.face; |
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} |
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void |
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face_options_t::add_options (option_parser_t *parser) |
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{ |
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GOptionEntry entries[] = |
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{ |
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{"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"}, |
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{"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"}, |
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{nullptr} |
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}; |
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parser->add_group (entries, |
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"face", |
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"Font-face options:", |
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"Options for the font face", |
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this); |
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} |
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#endif
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