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// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
// Copyright 2010, SIL International, All rights reserved.
#include "graphite2/Segment.h"
#include "inc/Segment.h"
#include "inc/Slot.h"
#include "inc/Font.h"
extern "C" {
const gr_slot* gr_slot_next_in_segment(const gr_slot* p/*not NULL*/)
{
assert(p);
return static_cast<const gr_slot*>(p->next());
}
const gr_slot* gr_slot_prev_in_segment(const gr_slot* p/*not NULL*/)
{
assert(p);
return static_cast<const gr_slot*>(p->prev());
}
const gr_slot* gr_slot_attached_to(const gr_slot* p/*not NULL*/) //returns NULL iff base. If called repeatedly on result, will get to a base
{
assert(p);
return static_cast<const gr_slot*>(p->attachedTo());
}
const gr_slot* gr_slot_first_attachment(const gr_slot* p/*not NULL*/) //returns NULL iff no attachments.
{ //if slot_first_attachment(p) is not NULL, then slot_attached_to(slot_first_attachment(p))==p.
assert(p);
return static_cast<const gr_slot*>(p->firstChild());
}
const gr_slot* gr_slot_next_sibling_attachment(const gr_slot* p/*not NULL*/) //returns NULL iff no more attachments.
{ //if slot_next_sibling_attachment(p) is not NULL, then slot_attached_to(slot_next_sibling_attachment(p))==slot_attached_to(p).
assert(p);
return static_cast<const gr_slot*>(p->nextSibling());
}
unsigned short gr_slot_gid(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->glyph();
}
float gr_slot_origin_X(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->origin().x;
}
float gr_slot_origin_Y(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->origin().y;
}
float gr_slot_advance_X(const gr_slot* p/*not NULL*/, const gr_face *face, const gr_font *font)
{
assert(p);
float scale = 1.0;
float res = p->advance();
if (font)
{
scale = font->scale();
int gid = p->glyph();
if (face && font->isHinted() && gid < face->glyphs().numGlyphs())
res = (res - face->glyphs().glyph(gid)->theAdvance().x) * scale + font->advance(gid);
else
res = res * scale;
}
return res;
}
float gr_slot_advance_Y(const gr_slot *p/*not NULL*/, GR_MAYBE_UNUSED const gr_face *face, const gr_font *font)
{
assert(p);
float res = p->advancePos().y;
if (font)
return res * font->scale();
else
return res;
}
int gr_slot_before(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->before();
}
int gr_slot_after(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->after();
}
unsigned int gr_slot_index(const gr_slot *p/*not NULL*/)
{
assert(p);
return p->index();
}
int gr_slot_attr(const gr_slot* p/*not NULL*/, const gr_segment* pSeg/*not NULL*/, gr_attrCode index, gr_uint8 subindex)
{
assert(p);
return p->getAttr(pSeg, index, subindex);
}
int gr_slot_can_insert_before(const gr_slot* p/*not NULL*/)
{
assert(p);
return (p->isInsertBefore())? 1 : 0;
}
int gr_slot_original(const gr_slot* p/*not NULL*/)
{
assert(p);
return p->original();
}
void gr_slot_linebreak_before(gr_slot* p/*not NULL*/)
{
assert(p);
gr_slot *prev = (gr_slot *)p->prev();
prev->sibling(NULL);
prev->next(NULL);
p->prev(NULL);
}
#if 0 //what should this be
size_t id(const gr_slot* p/*not NULL*/)
{
return (size_t)p->id();
}
#endif
} // extern "C"
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