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usp10: Handle GSUB SubType 7: Extension Substitution.
Signed-off-by: Aric Stewart <aric@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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c6a7284924
commit
12fb74ac56
1 changed files with 58 additions and 15 deletions
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@ -277,6 +277,12 @@ typedef struct{
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WORD Alternate[1];
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} GSUB_AlternateSet;
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typedef struct {
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WORD SubstFormat;
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WORD ExtensionLookupType;
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DWORD ExtensionOffset;
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} GSUB_ExtensionPosFormat1;
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/* These are all structures needed for the GPOS table */
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typedef struct {
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@ -725,6 +731,25 @@ static INT GSUB_is_glyph_covered(LPCVOID table , UINT glyph)
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return -1;
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}
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static const BYTE *GSUB_get_subtable(const OT_LookupTable *look, int index)
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{
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int offset = GET_BE_WORD(look->SubTable[index]);
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if (GET_BE_WORD(look->LookupType) == 7)
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{
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const GSUB_ExtensionPosFormat1 *ext = (const GSUB_ExtensionPosFormat1 *)((const BYTE *)look + offset);
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if (GET_BE_WORD(ext->SubstFormat) == 1)
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{
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offset += GET_BE_DWORD(ext->ExtensionOffset);
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}
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else
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{
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FIXME("Unhandled Extension Substitution Format %i\n",GET_BE_WORD(ext->SubstFormat));
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}
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}
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return (const BYTE *)look + offset;
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}
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static INT GSUB_apply_SingleSubst(const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
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{
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int j;
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@ -732,10 +757,7 @@ static INT GSUB_apply_SingleSubst(const OT_LookupTable *look, WORD *glyphs, INT
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for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
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{
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int offset;
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const GSUB_SingleSubstFormat1 *ssf1;
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offset = GET_BE_WORD(look->SubTable[j]);
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ssf1 = (const GSUB_SingleSubstFormat1*)((const BYTE*)look+offset);
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const GSUB_SingleSubstFormat1 *ssf1 = (const GSUB_SingleSubstFormat1*)GSUB_get_subtable(look, j);
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if (GET_BE_WORD(ssf1->SubstFormat) == 1)
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{
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int offset = GET_BE_WORD(ssf1->Coverage);
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@ -783,8 +805,7 @@ static INT GSUB_apply_MultipleSubst(const OT_LookupTable *look, WORD *glyphs, IN
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{
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int offset, index;
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const GSUB_MultipleSubstFormat1 *msf1;
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offset = GET_BE_WORD(look->SubTable[j]);
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msf1 = (const GSUB_MultipleSubstFormat1*)((const BYTE*)look+offset);
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msf1 = (const GSUB_MultipleSubstFormat1*)GSUB_get_subtable(look, j);
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offset = GET_BE_WORD(msf1->Coverage);
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index = GSUB_is_glyph_covered((const BYTE*)msf1+offset, glyphs[glyph_index]);
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@ -833,8 +854,7 @@ static INT GSUB_apply_AlternateSubst(const OT_LookupTable *look, WORD *glyphs, I
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const GSUB_AlternateSubstFormat1 *asf1;
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INT index;
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offset = GET_BE_WORD(look->SubTable[j]);
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asf1 = (const GSUB_AlternateSubstFormat1*)((const BYTE*)look+offset);
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asf1 = (const GSUB_AlternateSubstFormat1*)GSUB_get_subtable(look, j);
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offset = GET_BE_WORD(asf1->Coverage);
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index = GSUB_is_glyph_covered((const BYTE*)asf1+offset, glyphs[glyph_index]);
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@ -866,8 +886,7 @@ static INT GSUB_apply_LigatureSubst(const OT_LookupTable *look, WORD *glyphs, IN
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const GSUB_LigatureSubstFormat1 *lsf1;
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int offset,index;
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offset = GET_BE_WORD(look->SubTable[j]);
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lsf1 = (const GSUB_LigatureSubstFormat1*)((const BYTE*)look+offset);
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lsf1 = (const GSUB_LigatureSubstFormat1*)GSUB_get_subtable(look, j);
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offset = GET_BE_WORD(lsf1->Coverage);
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index = GSUB_is_glyph_covered((const BYTE*)lsf1+offset, glyphs[glyph_index]);
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TRACE(" Coverage index %i\n",index);
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@ -933,8 +952,7 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo
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int dirLookahead = write_dir;
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int dirBacktrack = -1 * write_dir;
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offset = GET_BE_WORD(look->SubTable[j]);
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ccsf1 = (const GSUB_ChainContextSubstFormat1*)((const BYTE*)look+offset);
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ccsf1 = (const GSUB_ChainContextSubstFormat1*)GSUB_get_subtable(look, j);
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if (GET_BE_WORD(ccsf1->SubstFormat) == 1)
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{
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static int once;
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@ -1029,12 +1047,34 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo
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static INT GSUB_apply_lookup(const OT_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
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{
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int offset;
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int type;
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const OT_LookupTable *look;
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offset = GET_BE_WORD(lookup->Lookup[lookup_index]);
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look = (const OT_LookupTable*)((const BYTE*)lookup + offset);
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TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look->LookupType),GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
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switch(GET_BE_WORD(look->LookupType))
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type = GET_BE_WORD(look->LookupType);
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TRACE("type %i, flag %x, subtables %i\n",type,GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
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if (type == 7)
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{
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if (GET_BE_WORD(look->SubTableCount))
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{
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const GSUB_ExtensionPosFormat1 *ext = (const GSUB_ExtensionPosFormat1 *)((const BYTE *)look + GET_BE_WORD(look->SubTable[0]));
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if (GET_BE_WORD(ext->SubstFormat) == 1)
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{
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type = GET_BE_WORD(ext->ExtensionLookupType);
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TRACE("extension type %i\n",type);
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}
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else
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{
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FIXME("Unhandled Extension Substitution Format %i\n",GET_BE_WORD(ext->SubstFormat));
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}
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}
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else
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{
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WARN("lookup type is Extension Substitution but no extension subtable exists\n");
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}
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}
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switch(type)
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{
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case 1:
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return GSUB_apply_SingleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
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@ -1046,8 +1086,11 @@ static INT GSUB_apply_lookup(const OT_LookupList* lookup, INT lookup_index, WORD
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return GSUB_apply_LigatureSubst(look, glyphs, glyph_index, write_dir, glyph_count);
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case 6:
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return GSUB_apply_ChainContextSubst(lookup, look, glyphs, glyph_index, write_dir, glyph_count);
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case 7:
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FIXME("Extension Substitution types not valid here\n");
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break;
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default:
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FIXME("We do not handle SubType %i\n",GET_BE_WORD(look->LookupType));
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FIXME("We do not handle SubType %i\n",type);
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}
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return GSUB_E_NOGLYPH;
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}
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