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8146494: Better ligature substitution

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Reviewed-by: vadim, mschoene
This commit is contained in:
Phil Race 2016-01-13 11:24:11 -08:00
parent 29aeb05692
commit 11920c3315
2 changed files with 38 additions and 2 deletions
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20
jdk/src/java.desktop/share/native/libfontmanager/layout/LigatureSubstProc.cpp
View File

@ -71,6 +71,10 @@ ByteOffset LigatureSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyp
{
LEErrorCode success = LE_NO_ERROR;
const LigatureSubstitutionStateEntry *entry = entryTable.getAlias(index, success);
if (LE_FAILURE(success)) {
currGlyph++;
return 0;
}
ByteOffset newState = SWAPW(entry->newStateOffset);
le_uint16 flags = SWAPW(entry->flags);
@ -91,6 +95,10 @@ ByteOffset LigatureSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyp
if (actionOffset != 0) {
LEReferenceTo<LigatureActionEntry> ap(stHeader, success, actionOffset);
if (LE_FAILURE(success)) {
currGlyph++;
return newState;
}
LigatureActionEntry action;
le_int32 offset, i = 0, j = 0;
le_int32 stack[nComponents];
@ -101,6 +109,10 @@ ByteOffset LigatureSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyp
if (j++ > 0) {
ap.addObject(success);
if (LE_FAILURE(success)) {
currGlyph++;
return newState;
}
}
action = SWAPL(*ap.getAlias());
@ -124,9 +136,17 @@ ByteOffset LigatureSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyp
return newState; // get out! bad font
}
i += SWAPW(offsetTable.getObject(LE_GET_GLYPH(glyphStorage[componentGlyph]), success));
if (LE_FAILURE(success)) {
currGlyph++;
return newState;
}
if (action & (lafLast | lafStore)) {
LEReferenceTo<TTGlyphID> ligatureOffset(stHeader, success, i);
if (LE_FAILURE(success)) {
currGlyph++;
return newState;
}
TTGlyphID ligatureGlyph = SWAPW(*ligatureOffset.getAlias());
glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], ligatureGlyph);

20
jdk/src/java.desktop/share/native/libfontmanager/layout/LigatureSubstProc2.cpp
View File

@ -95,6 +95,10 @@ le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyp
if (actionOffset != 0) {
LEReferenceTo<LigatureActionEntry> ap(stHeader, success, ligActionOffset); // byte offset
if (LE_FAILURE(success)) {
currGlyph+= dir;
return nextStateIndex;
}
ap.addObject(ligActionIndex, success);
LEReferenceToArrayOf<TTGlyphID> ligatureTable(stHeader, success, ligatureOffset, LE_UNBOUNDED_ARRAY);
LigatureActionEntry action;
@ -104,8 +108,8 @@ le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyp
LEReferenceToArrayOf<le_uint16> componentTable(stHeader, success, componentOffset, LE_UNBOUNDED_ARRAY);
if(LE_FAILURE(success)) {
currGlyph+= dir;
return nextStateIndex; // get out! bad font
currGlyph+= dir;
return nextStateIndex; // get out! bad font
}
do {
@ -114,6 +118,10 @@ le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyp
if (j++ > 0) {
ap.addObject(success);
}
if (LE_FAILURE(success)) {
currGlyph+= dir;
return nextStateIndex;
}
action = SWAPL(*ap.getAlias());
@ -129,9 +137,17 @@ le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyp
return nextStateIndex; // get out! bad font
}
i += SWAPW(componentTable(LE_GET_GLYPH(glyphStorage[componentGlyph]) + (SignExtend(offset, lafComponentOffsetMask)),success));
if (LE_FAILURE(success)) {
currGlyph+= dir;
return nextStateIndex;
}
if (action & (lafLast | lafStore)) {
TTGlyphID ligatureGlyph = SWAPW(ligatureTable(i,success));
if (LE_FAILURE(success)) {
currGlyph+= dir;
return nextStateIndex;
}
glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], ligatureGlyph);
if(mm==nComponents) {
LE_DEBUG_BAD_FONT("exceeded nComponents");