gfx/skia/trunk/src/gpu/GrTextStrike_impl.h@129ffea94266
gfx/skia/trunk/src/gpu/GrTextStrike_impl.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
2 /*
3 * Copyright 2010 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
11 #ifndef GrTextStrike_impl_DEFINED
12 #define GrTextStrike_impl_DEFINED
14 class GrFontCache::Key {
15 public:
16 explicit Key(const GrKey* fontScalarKey) {
17 fFontScalerKey = fontScalarKey;
18 }
20 intptr_t getHash() const { return fFontScalerKey->getHash(); }
22 static bool LessThan(const GrTextStrike& strike, const Key& key) {
23 return *strike.getFontScalerKey() < *key.fFontScalerKey;
24 }
25 static bool Equals(const GrTextStrike& strike, const Key& key) {
26 return *strike.getFontScalerKey() == *key.fFontScalerKey;
27 }
29 private:
30 const GrKey* fFontScalerKey;
31 };
33 void GrFontCache::detachStrikeFromList(GrTextStrike* strike) {
34 if (strike->fPrev) {
35 SkASSERT(fHead != strike);
36 strike->fPrev->fNext = strike->fNext;
37 } else {
38 SkASSERT(fHead == strike);
39 fHead = strike->fNext;
40 }
42 if (strike->fNext) {
43 SkASSERT(fTail != strike);
44 strike->fNext->fPrev = strike->fPrev;
45 } else {
46 SkASSERT(fTail == strike);
47 fTail = strike->fPrev;
48 }
49 }
51 GrTextStrike* GrFontCache::getStrike(GrFontScaler* scaler, bool useDistanceField) {
52 this->validate();
54 const Key key(scaler->getKey());
55 GrTextStrike* strike = fCache.find(key);
56 if (NULL == strike) {
57 strike = this->generateStrike(scaler, key);
58 } else if (strike->fPrev) {
59 // Need to put the strike at the head of its dllist, since that is how
60 // we age the strikes for purging (we purge from the back of the list
61 this->detachStrikeFromList(strike);
62 // attach at the head
63 fHead->fPrev = strike;
64 strike->fNext = fHead;
65 strike->fPrev = NULL;
66 fHead = strike;
67 }
68 strike->fUseDistanceField = useDistanceField;
69 this->validate();
70 return strike;
71 }
73 ///////////////////////////////////////////////////////////////////////////////
75 /**
76 * This Key just wraps a glyphID, and matches the protocol need for
77 * GrTHashTable
78 */
79 class GrTextStrike::Key {
80 public:
81 Key(GrGlyph::PackedID id) : fPackedID(id) {}
83 uint32_t getHash() const { return fPackedID; }
85 static bool LessThan(const GrGlyph& glyph, const Key& key) {
86 return glyph.fPackedID < key.fPackedID;
87 }
88 static bool Equals(const GrGlyph& glyph, const Key& key) {
89 return glyph.fPackedID == key.fPackedID;
90 }
92 private:
93 GrGlyph::PackedID fPackedID;
94 };
96 GrGlyph* GrTextStrike::getGlyph(GrGlyph::PackedID packed,
97 GrFontScaler* scaler) {
98 GrGlyph* glyph = fCache.find(packed);
99 if (NULL == glyph) {
100 glyph = this->generateGlyph(packed, scaler);
101 }
102 return glyph;
103 }
105 #endif
