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/*
* Copyright © 2017 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
*/
#include "hb-open-type-private.hh"
#include "hb-ot-layout-private.hh"
#include "hb-ot-layout-gsubgpos-private.hh"
#include "hb-aat-layout-private.hh"
#include "hb-aat-layout-ankr-table.hh"
#include "hb-aat-layout-kerx-table.hh"
#include "hb-aat-layout-morx-table.hh"
#include "hb-aat-layout-trak-table.hh"
/*
* mort/morx
*/
static inline const AAT::ankr&
_get_ankr (hb_face_t *face, hb_blob_t **blob = nullptr)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face)))
{
if (blob)
*blob = hb_blob_get_empty ();
return OT::Null(AAT::ankr);
}
hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
const AAT::ankr& ankr = *(layout->ankr.get ());
if (blob)
*blob = layout->ankr.blob;
return ankr;
}
static inline const AAT::kerx&
_get_kerx (hb_face_t *face, hb_blob_t **blob = nullptr)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face)))
{
if (blob)
*blob = hb_blob_get_empty ();
return OT::Null(AAT::kerx);
}
hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
/* XXX this doesn't call set_num_glyphs on sanitizer. */
const AAT::kerx& kerx = *(layout->kerx.get ());
if (blob)
*blob = layout->kerx.blob;
return kerx;
}
static inline const AAT::morx&
_get_morx (hb_face_t *face, hb_blob_t **blob = nullptr)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face)))
{
if (blob)
*blob = hb_blob_get_empty ();
return OT::Null(AAT::morx);
}
hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
/* XXX this doesn't call set_num_glyphs on sanitizer. */
const AAT::morx& morx = *(layout->morx.get ());
if (blob)
*blob = layout->morx.blob;
return morx;
}
static inline const AAT::trak&
_get_trak (hb_face_t *face, hb_blob_t **blob = nullptr)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face)))
{
if (blob)
*blob = hb_blob_get_empty ();
return OT::Null(AAT::trak);
}
hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
const AAT::trak& trak = *(layout->trak.get ());
if (blob)
*blob = layout->trak.blob;
return trak;
}
// static inline void
// _hb_aat_layout_create (hb_face_t *face)
// {
// OT::Sanitizer<AAT::morx> sanitizer;
// sanitizer.set_num_glyphs (face->get_num_glyphs ());
// hb_blob_t *morx_blob = sanitizer.sanitize (face->reference_table (HB_AAT_TAG_MORX));
// OT::Sanitizer<AAT::morx>::lock_instance (morx_blob);
// if (0)
// {
// OT::Sanitizer<AAT::Lookup<OT::GlyphID> >::lock_instance (morx_blob)->get_value (1, face->get_num_glyphs ());
// }
// }
void
hb_aat_layout_substitute (hb_font_t *font, hb_buffer_t *buffer)
{
hb_blob_t *blob;
const AAT::morx& morx = _get_morx (font->face, &blob);
AAT::hb_aat_apply_context_t c (font, buffer, blob);
morx.apply (&c);
}
void
hb_aat_layout_position (hb_font_t *font, hb_buffer_t *buffer)
{
hb_blob_t *blob;
const AAT::ankr& ankr = _get_ankr (font->face, &blob);
const AAT::kerx& kerx = _get_kerx (font->face, &blob);
const AAT::trak& trak = _get_trak (font->face, &blob);
AAT::hb_aat_apply_context_t c (font, buffer, blob);
kerx.apply (&c, &ankr);
trak.apply (&c);
}
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