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 "font-options.hh"
31 #include "shape-options.hh"
32 #include "text-options.hh"
35 template <typename output_t>
36 struct shape_consumer_t : shape_options_t
38 void add_options (option_parser_t *parser)
40 shape_options_t::add_options (parser);
41 output.add_options (parser);
44 template <typename app_t>
45 void init (const app_t *app)
48 buffer = hb_buffer_create ();
50 output.init (buffer, app);
52 template <typename app_t>
53 bool consume_line (app_t &app)
55 unsigned int text_len;
57 if (!(text = app.get_line (&text_len)))
62 for (unsigned int n = num_iterations; n; n--)
64 populate_buffer (buffer, text, text_len, app.text_before, app.text_after, app.font);
66 output.consume_text (buffer, text, text_len, utf8_clusters);
68 const char *error = nullptr;
69 if (!shape (app.font, buffer, &error))
73 if (hb_buffer_get_content_type (buffer) == HB_BUFFER_CONTENT_TYPE_GLYPHS)
81 output.consume_glyphs (buffer, nullptr, 0, false);
83 output.consume_glyphs (buffer, text, text_len, utf8_clusters);
86 template <typename app_t>
87 void finish (const app_t *app)
89 output.finish (buffer, app);
90 hb_buffer_destroy (buffer);
100 hb_buffer_t *buffer = nullptr;