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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrTextStrike_impl_DEFINED
#define GrTextStrike_impl_DEFINED
void GrFontCache::detachStrikeFromList(GrTextStrike* strike) {
if (strike->fPrev) {
SkASSERT(fHead != strike);
strike->fPrev->fNext = strike->fNext;
} else {
SkASSERT(fHead == strike);
fHead = strike->fNext;
}
if (strike->fNext) {
SkASSERT(fTail != strike);
strike->fNext->fPrev = strike->fPrev;
} else {
SkASSERT(fTail == strike);
fTail = strike->fPrev;
}
}
GrTextStrike* GrFontCache::getStrike(GrFontScaler* scaler, bool useDistanceField) {
this->validate();
GrTextStrike* strike = fCache.find(*(scaler->getKey()));
if (NULL == strike) {
strike = this->generateStrike(scaler);
} else if (strike->fPrev) {
// Need to put the strike at the head of its dllist, since that is how
// we age the strikes for purging (we purge from the back of the list)
this->detachStrikeFromList(strike);
// attach at the head
fHead->fPrev = strike;
strike->fNext = fHead;
strike->fPrev = NULL;
fHead = strike;
}
strike->fUseDistanceField = useDistanceField;
this->validate();
return strike;
}
///////////////////////////////////////////////////////////////////////////////
GrGlyph* GrTextStrike::getGlyph(GrGlyph::PackedID packed,
GrFontScaler* scaler) {
GrGlyph* glyph = fCache.find(packed);
if (NULL == glyph) {
glyph = this->generateGlyph(packed, scaler);
}
return glyph;
}
#endif
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