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Commit fb3ea0ae authored by Henri Verbeet's avatar Henri Verbeet Committed by Alexandre Julliard
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usp10: Rename the chaining context tables in GPOS_apply_ChainContextPos() to…

usp10: Rename the chaining context tables in GPOS_apply_ChainContextPos() to something more descriptive. Signed-off-by: 's avatarHenri Verbeet <hverbeet@codeweavers.com> Signed-off-by: 's avatarAric Stewart <aric@codeweavers.com> Signed-off-by: 's avatarAlexandre Julliard <julliard@winehq.org>
parent 3e3f5e88
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Showing with 33 additions and 30 deletions
dlls/usp10/opentype.c
View file @ fb3ea0ae
......@@ -2206,91 +2206,94 @@ static unsigned int GPOS_apply_ChainContextPos(const ScriptCache *script_cache,
for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
{
int offset;
const GPOS_ChainContextPosFormat3_1 *ccpf3 = (GPOS_ChainContextPosFormat3_1 *)GPOS_get_subtable(look, j);
const GPOS_ChainContextPosFormat3_1 *backtrack = (GPOS_ChainContextPosFormat3_1 *)GPOS_get_subtable(look, j);
int dirLookahead = write_dir;
int dirBacktrack = -1 * write_dir;
if (GET_BE_WORD(ccpf3->PosFormat) == 1)
if (GET_BE_WORD(backtrack->PosFormat) == 1)
{
static int once;
if (!once++)
FIXME(" TODO: subtype 1 (Simple Chaining Context Glyph Positioning)\n");
continue;
}
else if (GET_BE_WORD(ccpf3->PosFormat) == 2)
else if (GET_BE_WORD(backtrack->PosFormat) == 2)
{
static int once;
if (!once++)
FIXME(" TODO: subtype 2 (Class-based Chaining Context Glyph Positioning)\n");
continue;
}
else if (GET_BE_WORD(ccpf3->PosFormat) == 3)
else if (GET_BE_WORD(backtrack->PosFormat) == 3)
{
int k;
int indexGlyphs;
const GPOS_ChainContextPosFormat3_2 *ccpf3_2;
const GPOS_ChainContextPosFormat3_3 *ccpf3_3;
const GPOS_ChainContextPosFormat3_4 *ccpf3_4;
const GPOS_ChainContextPosFormat3_2 *input;
const GPOS_ChainContextPosFormat3_3 *lookahead;
const GPOS_ChainContextPosFormat3_4 *positioning;
TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Positioning)\n");
for (k = 0; k < GET_BE_WORD(ccpf3->BacktrackGlyphCount); k++)
for (k = 0; k < GET_BE_WORD(backtrack->BacktrackGlyphCount); ++k)
{
offset = GET_BE_WORD(ccpf3->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (dirBacktrack * (k+1))]) == -1)
offset = GET_BE_WORD(backtrack->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE *)backtrack + offset,
glyphs[glyph_index + (dirBacktrack * (k + 1))]) == -1)
break;
}
if (k != GET_BE_WORD(ccpf3->BacktrackGlyphCount))
if (k != GET_BE_WORD(backtrack->BacktrackGlyphCount))
continue;
TRACE("Matched Backtrack\n");
ccpf3_2 = (const GPOS_ChainContextPosFormat3_2*)((BYTE *)ccpf3 +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_1, Coverage[GET_BE_WORD(ccpf3->BacktrackGlyphCount)]));
input = (const GPOS_ChainContextPosFormat3_2 *)((BYTE *)backtrack +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_1, Coverage[GET_BE_WORD(backtrack->BacktrackGlyphCount)]));
indexGlyphs = GET_BE_WORD(ccpf3_2->InputGlyphCount);
indexGlyphs = GET_BE_WORD(input->InputGlyphCount);
for (k = 0; k < indexGlyphs; k++)
{
offset = GET_BE_WORD(ccpf3_2->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (write_dir * k)]) == -1)
offset = GET_BE_WORD(input->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE *)backtrack + offset,
glyphs[glyph_index + (write_dir * k)]) == -1)
break;
}
if (k != indexGlyphs)
continue;
TRACE("Matched IndexGlyphs\n");
ccpf3_3 = (const GPOS_ChainContextPosFormat3_3*)((BYTE *)ccpf3_2 +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_2, Coverage[GET_BE_WORD(ccpf3_2->InputGlyphCount)]));
lookahead = (const GPOS_ChainContextPosFormat3_3 *)((BYTE *)input +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_2, Coverage[GET_BE_WORD(input->InputGlyphCount)]));
for (k = 0; k < GET_BE_WORD(ccpf3_3->LookaheadGlyphCount); k++)
for (k = 0; k < GET_BE_WORD(lookahead->LookaheadGlyphCount); ++k)
{
offset = GET_BE_WORD(ccpf3_3->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
offset = GET_BE_WORD(lookahead->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE *)backtrack + offset,
glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
break;
}
if (k != GET_BE_WORD(ccpf3_3->LookaheadGlyphCount))
if (k != GET_BE_WORD(lookahead->LookaheadGlyphCount))
continue;
TRACE("Matched LookAhead\n");
ccpf3_4 = (const GPOS_ChainContextPosFormat3_4*)((BYTE *)ccpf3_3 +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_3, Coverage[GET_BE_WORD(ccpf3_3->LookaheadGlyphCount)]));
positioning = (const GPOS_ChainContextPosFormat3_4 *)((BYTE *)lookahead +
FIELD_OFFSET(GPOS_ChainContextPosFormat3_3, Coverage[GET_BE_WORD(lookahead->LookaheadGlyphCount)]));
if (GET_BE_WORD(ccpf3_4->PosCount))
if (GET_BE_WORD(positioning->PosCount))
{
for (k = 0; k < GET_BE_WORD(ccpf3_4->PosCount); k++)
for (k = 0; k < GET_BE_WORD(positioning->PosCount); ++k)
{
int lookupIndex = GET_BE_WORD(ccpf3_4->PosLookupRecord[k].LookupListIndex);
int SequenceIndex = GET_BE_WORD(ccpf3_4->PosLookupRecord[k].SequenceIndex) * write_dir;
int lookupIndex = GET_BE_WORD(positioning->PosLookupRecord[k].LookupListIndex);
int SequenceIndex = GET_BE_WORD(positioning->PosLookupRecord[k].SequenceIndex) * write_dir;
TRACE("Position: %i -> %i %i\n",k, SequenceIndex, lookupIndex);
GPOS_apply_lookup(script_cache, otm, logfont, analysis, advance, lookup, lookupIndex,
glyphs, glyph_index + SequenceIndex, glyph_count, goffset);
}
return indexGlyphs + GET_BE_WORD(ccpf3_3->LookaheadGlyphCount);
return indexGlyphs + GET_BE_WORD(lookahead->LookaheadGlyphCount);
}
else return 1;
}
else
FIXME("Unhandled Chaining Contextual Positioning Format %i\n",GET_BE_WORD(ccpf3->PosFormat));
FIXME("Unhandled Chaining Contextual Positioning Format %#x.\n", GET_BE_WORD(backtrack->PosFormat));
}
return 1;
}
......
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