Index: src/core/SkGlyphCache.h |
diff --git a/src/core/SkGlyphCache.h b/src/core/SkGlyphCache.h |
index b335d29d2d8a8acf2005213bd11bf7f27a82a4ca..200655bb417890731dc0c01ae8aeb290faa15d5c 100644 |
--- a/src/core/SkGlyphCache.h |
+++ b/src/core/SkGlyphCache.h |
@@ -187,32 +187,48 @@ private: |
kFull_MetricsType |
}; |
- SkGlyph* lookupMetrics(uint32_t id, MetricsType); |
+ // Return the SkGlyph* associated with MakeID. The id parameter is the combined glyph/x/y |
+ // id generated by MakeID. If it is just a glyph id then x and y are assuemd to be zero. |
+ SkGlyph* lookupByCombinedID(uint32_t id, MetricsType type); |
+ |
+ // Return a SkGlyph* associated with unicode id and position x and y. |
+ SkGlyph* lookupByChar(SkUnichar id, MetricsType type, SkFixed x = 0, SkFixed y = 0); |
+ |
+ // Return the index of id in the fGlyphArray. If it does |
+ // not exist, create a new one using MetricsType. |
+ uint16_t lookupMetrics(uint32_t id, MetricsType type); |
static bool DetachProc(const SkGlyphCache*, void*) { return true; } |
- SkGlyphCache* fNext, *fPrev; |
- SkDescriptor* fDesc; |
- SkScalerContext* fScalerContext; |
+ SkGlyphCache* fNext, *fPrev; |
+ SkDescriptor* fDesc; |
+ SkScalerContext* fScalerContext; |
SkPaint::FontMetrics fFontMetrics; |
enum { |
- kHashBits = 8, |
- kHashCount = 1 << kHashBits, |
- kHashMask = kHashCount - 1 |
+ kHashBits = 8, |
+ kHashCount = 1 << kHashBits, |
+ kHashMask = kHashCount - 1, |
+ kSentinelGlyphIndex = 0, |
+ kSentinelGlyphID = ~0 |
}; |
- SkGlyph* fGlyphHash[kHashCount]; |
- SkTDArray<SkGlyph*> fGlyphArray; |
- SkChunkAlloc fGlyphAlloc; |
+ |
+ // A quick lookup to avoid the binary search looking for glyphs in fGlyphArray. |
+ uint16_t fGlyphHash[kHashCount]; |
+ SkTDArray<SkGlyph> fGlyphArray; |
+ SkChunkAlloc fGlyphAlloc; |
struct CharGlyphRec { |
uint32_t fID; // unichar + subpixel |
- SkGlyph* fGlyph; |
+ uint16_t fGlyphIndex; |
}; |
+ |
// no reason to use the same kHashCount as fGlyphHash, but we do for now |
// Dynamically allocated when chars are encountered. |
SkAutoTArray<CharGlyphRec> fCharToGlyphHash; |
- |
+ |
+ // The id arg is a combined id generated by MakeID. |
CharGlyphRec* getCharGlyphRec(uint32_t id); |
+ void adjustCaches(int insertion_index); |
static inline unsigned ID2HashIndex(uint32_t h) { |
return SkChecksum::CheapMix(h) & kHashMask; |
@@ -221,7 +237,6 @@ private: |
// used to track (approx) how much ram is tied-up in this cache |
size_t fMemoryUsed; |
- |
#ifdef SK_GLYPHCACHE_TRACK_HASH_STATS |
int fHashHitCount; |
int fHashMissCount; |