The Tor Browser / file comparison
comparison: gfx/thebes/gfxFontFeatures.h
gfx/thebes/gfxFontFeatures.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:4a095d515fbb |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef GFX_FONT_FEATURES_H | |
| 8 #define GFX_FONT_FEATURES_H | |
| 9 | |
| 10 #include "nsTHashtable.h" | |
| 11 #include "nsTArray.h" | |
| 12 #include "nsString.h" | |
| 13 | |
| 14 // An OpenType feature tag and value pair | |
| 15 struct gfxFontFeature { | |
| 16 uint32_t mTag; // see http://www.microsoft.com/typography/otspec/featuretags.htm | |
| 17 uint32_t mValue; // 0 = off, 1 = on, larger values may be used as parameters | |
| 18 // to features that select among multiple alternatives | |
| 19 }; | |
| 20 | |
| 21 inline bool | |
| 22 operator<(const gfxFontFeature& a, const gfxFontFeature& b) | |
| 23 { | |
| 24 return (a.mTag < b.mTag) || ((a.mTag == b.mTag) && (a.mValue < b.mValue)); | |
| 25 } | |
| 26 | |
| 27 inline bool | |
| 28 operator==(const gfxFontFeature& a, const gfxFontFeature& b) | |
| 29 { | |
| 30 return (a.mTag == b.mTag) && (a.mValue == b.mValue); | |
| 31 } | |
| 32 | |
| 33 struct gfxAlternateValue { | |
| 34 uint32_t alternate; // constants in gfxFontConstants.h | |
| 35 nsString value; // string value to be looked up | |
| 36 }; | |
| 37 | |
| 38 inline bool | |
| 39 operator<(const gfxAlternateValue& a, const gfxAlternateValue& b) | |
| 40 { | |
| 41 return (a.alternate < b.alternate) || | |
| 42 ((a.alternate == b.alternate) && (a.value < b.value)); | |
| 43 } | |
| 44 | |
| 45 inline bool | |
| 46 operator==(const gfxAlternateValue& a, const gfxAlternateValue& b) | |
| 47 { | |
| 48 return (a.alternate == b.alternate) && (a.value == b.value); | |
| 49 } | |
| 50 | |
| 51 class gfxFontFeatureValueSet MOZ_FINAL { | |
| 52 public: | |
| 53 NS_INLINE_DECL_REFCOUNTING(gfxFontFeatureValueSet) | |
| 54 | |
| 55 gfxFontFeatureValueSet(); | |
| 56 | |
| 57 struct ValueList { | |
| 58 ValueList(const nsAString& aName, const nsTArray<uint32_t>& aSelectors) | |
| 59 : name(aName), featureSelectors(aSelectors) | |
| 60 {} | |
| 61 nsString name; | |
| 62 nsTArray<uint32_t> featureSelectors; | |
| 63 }; | |
| 64 | |
| 65 struct FeatureValues { | |
| 66 uint32_t alternate; | |
| 67 nsTArray<ValueList> valuelist; | |
| 68 }; | |
| 69 | |
| 70 // returns true if found, false otherwise | |
| 71 bool | |
| 72 GetFontFeatureValuesFor(const nsAString& aFamily, | |
| 73 uint32_t aVariantProperty, | |
| 74 const nsAString& aName, | |
| 75 nsTArray<uint32_t>& aValues); | |
| 76 void | |
| 77 AddFontFeatureValues(const nsAString& aFamily, | |
| 78 const nsTArray<gfxFontFeatureValueSet::FeatureValues>& aValues); | |
| 79 | |
| 80 private: | |
| 81 // Private destructor, to discourage deletion outside of Release(): | |
| 82 ~gfxFontFeatureValueSet() {} | |
| 83 | |
| 84 struct FeatureValueHashKey { | |
| 85 nsString mFamily; | |
| 86 uint32_t mPropVal; | |
| 87 nsString mName; | |
| 88 | |
| 89 FeatureValueHashKey() | |
| 90 : mPropVal(0) | |
| 91 { } | |
| 92 FeatureValueHashKey(const nsAString& aFamily, | |
| 93 uint32_t aPropVal, | |
| 94 const nsAString& aName) | |
| 95 : mFamily(aFamily), mPropVal(aPropVal), mName(aName) | |
| 96 { } | |
| 97 FeatureValueHashKey(const FeatureValueHashKey& aKey) | |
| 98 : mFamily(aKey.mFamily), mPropVal(aKey.mPropVal), mName(aKey.mName) | |
| 99 { } | |
| 100 }; | |
| 101 | |
| 102 class FeatureValueHashEntry : public PLDHashEntryHdr { | |
| 103 public: | |
| 104 typedef const FeatureValueHashKey &KeyType; | |
| 105 typedef const FeatureValueHashKey *KeyTypePointer; | |
| 106 | |
| 107 FeatureValueHashEntry(KeyTypePointer aKey) { } | |
| 108 FeatureValueHashEntry(const FeatureValueHashEntry& toCopy) | |
| 109 { | |
| 110 NS_ERROR("Should not be called"); | |
| 111 } | |
| 112 ~FeatureValueHashEntry() { } | |
| 113 | |
| 114 bool KeyEquals(const KeyTypePointer aKey) const; | |
| 115 static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; } | |
| 116 static PLDHashNumber HashKey(const KeyTypePointer aKey); | |
| 117 enum { ALLOW_MEMMOVE = true }; | |
| 118 | |
| 119 FeatureValueHashKey mKey; | |
| 120 nsTArray<uint32_t> mValues; | |
| 121 }; | |
| 122 | |
| 123 nsTHashtable<FeatureValueHashEntry> mFontFeatureValues; | |
| 124 }; | |
| 125 | |
| 126 #endif |
