michael@0: /*
michael@0:  * Copyright © 2009  Red Hat, Inc.
michael@0:  * Copyright © 2011  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:  * Red Hat Author(s): Behdad Esfahbod
michael@0:  * Google Author(s): Behdad Esfahbod
michael@0:  */
michael@0: 
michael@0: #ifndef HB_FACE_PRIVATE_HH
michael@0: #define HB_FACE_PRIVATE_HH
michael@0: 
michael@0: #include "hb-private.hh"
michael@0: 
michael@0: #include "hb-object-private.hh"
michael@0: #include "hb-shaper-private.hh"
michael@0: #include "hb-shape-plan-private.hh"
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * hb_face_t
michael@0:  */
michael@0: 
michael@0: struct hb_face_t {
michael@0:   hb_object_header_t header;
michael@0:   ASSERT_POD ();
michael@0: 
michael@0:   hb_bool_t immutable;
michael@0: 
michael@0:   hb_reference_table_func_t  reference_table_func;
michael@0:   void                      *user_data;
michael@0:   hb_destroy_func_t          destroy;
michael@0: 
michael@0:   unsigned int index;
michael@0:   mutable unsigned int upem;
michael@0:   mutable unsigned int num_glyphs;
michael@0: 
michael@0:   struct hb_shaper_data_t shaper_data;
michael@0: 
michael@0:   struct plan_node_t {
michael@0:     hb_shape_plan_t *shape_plan;
michael@0:     plan_node_t *next;
michael@0:   } *shape_plans;
michael@0: 
michael@0: 
michael@0:   inline hb_blob_t *reference_table (hb_tag_t tag) const
michael@0:   {
michael@0:     hb_blob_t *blob;
michael@0: 
michael@0:     if (unlikely (!this || !reference_table_func))
michael@0:       return hb_blob_get_empty ();
michael@0: 
michael@0:     blob = reference_table_func (/*XXX*/const_cast<hb_face_t *> (this), tag, user_data);
michael@0:     if (unlikely (!blob))
michael@0:       return hb_blob_get_empty ();
michael@0: 
michael@0:     return blob;
michael@0:   }
michael@0: 
michael@0:   inline HB_PURE_FUNC unsigned int get_upem (void) const
michael@0:   {
michael@0:     if (unlikely (!upem))
michael@0:       load_upem ();
michael@0:     return upem;
michael@0:   }
michael@0: 
michael@0:   inline unsigned int get_num_glyphs (void) const
michael@0:   {
michael@0:     if (unlikely (num_glyphs == (unsigned int) -1))
michael@0:       load_num_glyphs ();
michael@0:     return num_glyphs;
michael@0:   }
michael@0: 
michael@0:   private:
michael@0:   HB_INTERNAL void load_upem (void) const;
michael@0:   HB_INTERNAL void load_num_glyphs (void) const;
michael@0: };
michael@0: 
michael@0: extern HB_INTERNAL const hb_face_t _hb_face_nil;
michael@0: 
michael@0: #define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
michael@0: #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_PROTOTYPE(shaper, face);
michael@0: #include "hb-shaper-list.hh"
michael@0: #undef HB_SHAPER_IMPLEMENT
michael@0: #undef HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
michael@0: 
michael@0: 
michael@0: #endif /* HB_FACE_PRIVATE_HH */