| |
| /* |
| * 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 |
