chromium/third_party/harfbuzz-ng/src/src/hb-ot-shaper-arabic-fallback.hh

/*
 * Copyright © 2012  Google, Inc.
 *
 *  This is part of HarfBuzz, a text shaping library.
 *
 * 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.
 *
 * Google Author(s): Behdad Esfahbod
 */

#ifndef HB_OT_SHAPER_ARABIC_FALLBACK_HH
#define HB_OT_SHAPER_ARABIC_FALLBACK_HH

#include "hb.hh"

#include "hb-ot-shape.hh"
#include "hb-ot-layout-gsub-table.hh"


/* Features ordered the same as the entries in shaping_table rows,
 * followed by rlig.  Don't change.
 *
 * We currently support one subtable per lookup, and one lookup
 * per feature.  But we allow duplicate features, so we use that!
 */
static const hb_tag_t arabic_fallback_features[] = …;

static OT::SubstLookup *
arabic_fallback_synthesize_lookup_single (const hb_ot_shape_plan_t *plan HB_UNUSED,
					  hb_font_t *font,
					  unsigned int feature_index)
{ … }

template <typename T>
static OT::SubstLookup *
arabic_fallback_synthesize_lookup_ligature (const hb_ot_shape_plan_t *plan HB_UNUSED,
					    hb_font_t *font,
					    const T &ligature_table,
					    unsigned lookup_flags)
{ … }

static OT::SubstLookup *
arabic_fallback_synthesize_lookup (const hb_ot_shape_plan_t *plan,
				   hb_font_t *font,
				   unsigned int feature_index)
{ … }

#define ARABIC_FALLBACK_MAX_LOOKUPS …

struct arabic_fallback_plan_t
{ … };

#if defined(_WIN32) && !defined(HB_NO_WIN1256)
#define HB_WITH_WIN1256
#endif

#ifdef HB_WITH_WIN1256
#include "hb-ot-shaper-arabic-win1256.hh"
#endif

struct ManifestLookup
{ … };
Manifest;

static bool
arabic_fallback_plan_init_win1256 (arabic_fallback_plan_t *fallback_plan HB_UNUSED,
				   const hb_ot_shape_plan_t *plan HB_UNUSED,
				   hb_font_t *font HB_UNUSED)
{ … }

static bool
arabic_fallback_plan_init_unicode (arabic_fallback_plan_t *fallback_plan,
				   const hb_ot_shape_plan_t *plan,
				   hb_font_t *font)
{ … }

static arabic_fallback_plan_t *
arabic_fallback_plan_create (const hb_ot_shape_plan_t *plan,
			     hb_font_t *font)
{ … }

static void
arabic_fallback_plan_destroy (arabic_fallback_plan_t *fallback_plan)
{ … }

static void
arabic_fallback_plan_shape (arabic_fallback_plan_t *fallback_plan,
			    hb_font_t *font,
			    hb_buffer_t *buffer)
{ … }


#endif /* HB_OT_SHAPER_ARABIC_FALLBACK_HH */