145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod/* 245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * Copyright © 2011,2012 Google, Inc. 345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * 445675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * 645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * Permission is hereby granted, without written agreement and without 745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * software and its documentation for any purpose, provided that the 945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 1045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * all copies of this software. 1145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * 1245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 1345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 1445675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 1545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 1645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * DAMAGE. 1745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * 1845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 1945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 2045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 2145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 2245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 2345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * 2445675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod * Google Author(s): Behdad Esfahbod 2545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod */ 2645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 2745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod#include "options.hh" 2845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 2945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod#ifndef HB_SHAPE_CONSUMER_HH 3045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod#define HB_SHAPE_CONSUMER_HH 3145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 3245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 3345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbodtemplate <typename output_t> 3445675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbodstruct shape_consumer_t 3545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod{ 3645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod shape_consumer_t (option_parser_t *parser) 3745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod : shaper (parser), 3845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod output (parser) {} 3945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 4045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod void init (const font_options_t *font_opts) 4145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod { 4245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod font = hb_font_reference (font_opts->get_font ()); 4345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod output.init (font_opts); 445db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod failed = false; 4545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod } 4645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod void consume_line (hb_buffer_t *buffer, 4745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod const char *text, 48321f73c16efa0730c96e001d65268f4927a0f735Behdad Esfahbod unsigned int text_len, 49321f73c16efa0730c96e001d65268f4927a0f735Behdad Esfahbod const char *text_before, 50321f73c16efa0730c96e001d65268f4927a0f735Behdad Esfahbod const char *text_after) 5145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod { 525db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod output.new_line (); 53ae62166519291057316a9d15cea3f1570fcb5eafBehdad Esfahbod 54321f73c16efa0730c96e001d65268f4927a0f735Behdad Esfahbod shaper.populate_buffer (buffer, text, text_len, text_before, text_after); 555db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod output.consume_text (buffer, text, text_len, shaper.utf8_clusters); 5645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 57ae62166519291057316a9d15cea3f1570fcb5eafBehdad Esfahbod if (!shaper.shape (font, buffer)) { 585db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod failed = true; 595db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod hb_buffer_set_length (buffer, 0); 605db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod output.shape_failed (buffer, text, text_len, shaper.utf8_clusters); 615db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod return; 625db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod } 635db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod 645db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod output.consume_glyphs (buffer, text, text_len, shaper.utf8_clusters); 6545675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod } 6645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod void finish (const font_options_t *font_opts) 6745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod { 6845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod output.finish (font_opts); 6945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod hb_font_destroy (font); 7045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod font = NULL; 7145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod } 7245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 735db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod public: 745db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod bool failed; 755db0683a822f70c914468430cda6487cee740ae3Behdad Esfahbod 7645675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod protected: 7745675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod shape_options_t shaper; 7845675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod output_t output; 7945675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 8045675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod hb_font_t *font; 8145675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod}; 8245675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 8345675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod 8445675e589e6ef9f81b2a4199cf33e3e7778433a8Behdad Esfahbod#endif 85