michael@0: /*
michael@0:  * Copyright © 2012  Google, Inc.
michael@0:  *
michael@0:  *  This is part of HarfBuzz, a text shaping library.
michael@0:  *
michael@0:  * Permission is hereby granted, without written agreement and without
michael@0:  * license or royalty fees, to use, copy, modify, and distribute this
michael@0:  * software and its documentation for any purpose, provided that the
michael@0:  * above copyright notice and the following two paragraphs appear in
michael@0:  * all copies of this software.
michael@0:  *
michael@0:  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
michael@0:  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
michael@0:  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
michael@0:  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
michael@0:  * DAMAGE.
michael@0:  *
michael@0:  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
michael@0:  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
michael@0:  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
michael@0:  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
michael@0:  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
michael@0:  *
michael@0:  * Google Author(s): Behdad Esfahbod
michael@0:  */
michael@0: 
michael@0: #ifndef HB_OT_SHAPE_NORMALIZE_PRIVATE_HH
michael@0: #define HB_OT_SHAPE_NORMALIZE_PRIVATE_HH
michael@0: 
michael@0: #include "hb-private.hh"
michael@0: 
michael@0: 
michael@0: /* buffer var allocations, used during the normalization process */
michael@0: #define glyph_index()	var1.u32
michael@0: 
michael@0: struct hb_ot_shape_plan_t;
michael@0: 
michael@0: enum hb_ot_shape_normalization_mode_t {
michael@0:   HB_OT_SHAPE_NORMALIZATION_MODE_NONE,
michael@0:   HB_OT_SHAPE_NORMALIZATION_MODE_DECOMPOSED,
michael@0:   HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS, /* never composes base-to-base */
michael@0:   HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, /* always fully decomposes and then recompose back */
michael@0: 
michael@0:   HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT = HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS
michael@0: };
michael@0: 
michael@0: HB_INTERNAL void _hb_ot_shape_normalize (const hb_ot_shape_plan_t *shaper,
michael@0: 					 hb_buffer_t *buffer,
michael@0: 					 hb_font_t *font);
michael@0: 
michael@0: 
michael@0: struct hb_ot_shape_normalize_context_t
michael@0: {
michael@0:   const hb_ot_shape_plan_t *plan;
michael@0:   hb_buffer_t *buffer;
michael@0:   hb_font_t *font;
michael@0:   hb_unicode_funcs_t *unicode;
michael@0:   bool (*decompose) (const hb_ot_shape_normalize_context_t *c,
michael@0: 		     hb_codepoint_t  ab,
michael@0: 		     hb_codepoint_t *a,
michael@0: 		     hb_codepoint_t *b);
michael@0:   bool (*compose) (const hb_ot_shape_normalize_context_t *c,
michael@0: 		   hb_codepoint_t  a,
michael@0: 		   hb_codepoint_t  b,
michael@0: 		   hb_codepoint_t *ab);
michael@0: };
michael@0: 
michael@0: 
michael@0: #endif /* HB_OT_SHAPE_NORMALIZE_PRIVATE_HH */