2 * Copyright © 2011,2012 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Google Author(s): Behdad Esfahbod
27 #ifndef HB_SHAPE_CONSUMER_HH
28 #define HB_SHAPE_CONSUMER_HH
30 #include "hb-private.hh"
34 template <typename output_t>
35 struct shape_consumer_t
37 shape_consumer_t (option_parser_t *parser)
44 void init (hb_buffer_t *buffer_,
45 const font_options_t *font_opts)
47 font = hb_font_reference (font_opts->get_font ());
49 buffer = hb_buffer_reference (buffer_);
51 output.init (buffer, font_opts);
53 void consume_line (const char *text,
54 unsigned int text_len,
55 const char *text_before,
56 const char *text_after)
60 for (unsigned int n = shaper.num_iterations; n; n--)
62 const char *error = nullptr;
64 shaper.populate_buffer (buffer, text, text_len, text_before, text_after);
66 output.consume_text (buffer, text, text_len, shaper.utf8_clusters);
67 if (!shaper.shape (font, buffer, &error))
71 if (hb_buffer_get_content_type (buffer) == HB_BUFFER_CONTENT_TYPE_GLYPHS)
78 output.consume_glyphs (buffer, text, text_len, shaper.utf8_clusters);
80 void finish (const font_options_t *font_opts)
82 output.finish (buffer, font_opts);
83 hb_font_destroy (font);
85 hb_buffer_destroy (buffer);
93 shape_options_t shaper;