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| 1 |
| 2 /* |
| 3 * Copyright 2012 The Android Open Source Project |
| 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. |
| 7 */ |
| 8 |
| 9 |
| 10 #ifndef SkPaintOptionsAndroid_DEFINED |
| 11 #define SkPaintOptionsAndroid_DEFINED |
| 12 |
| 13 #include "SkTypes.h" |
| 14 #include "SkString.h" |
| 15 |
| 16 class SkReadBuffer; |
| 17 class SkWriteBuffer; |
| 18 |
| 19 /** \class SkLanguage |
| 20 |
| 21 The SkLanguage class represents a human written language, and is used by |
| 22 text draw operations to determine which glyph to draw when drawing |
| 23 characters with variants (ie Han-derived characters). |
| 24 */ |
| 25 class SkLanguage { |
| 26 public: |
| 27 SkLanguage() { } |
| 28 SkLanguage(const SkString& tag) : fTag(tag) { } |
| 29 SkLanguage(const char* tag) : fTag(tag) { } |
| 30 SkLanguage(const char* tag, size_t len) : fTag(tag, len) { } |
| 31 SkLanguage(const SkLanguage& b) : fTag(b.fTag) { } |
| 32 |
| 33 /** Gets a BCP 47 language identifier for this SkLanguage. |
| 34 @return a BCP 47 language identifier representing this language |
| 35 */ |
| 36 const SkString& getTag() const { return fTag; } |
| 37 |
| 38 /** Performs BCP 47 fallback to return an SkLanguage one step more general. |
| 39 @return an SkLanguage one step more general |
| 40 */ |
| 41 SkLanguage getParent() const; |
| 42 |
| 43 bool operator==(const SkLanguage& b) const { |
| 44 return fTag == b.fTag; |
| 45 } |
| 46 bool operator!=(const SkLanguage& b) const { |
| 47 return fTag != b.fTag; |
| 48 } |
| 49 SkLanguage& operator=(const SkLanguage& b) { |
| 50 fTag = b.fTag; |
| 51 return *this; |
| 52 } |
| 53 |
| 54 private: |
| 55 //! BCP 47 language identifier |
| 56 SkString fTag; |
| 57 }; |
| 58 |
| 59 class SkPaintOptionsAndroid { |
| 60 public: |
| 61 SkPaintOptionsAndroid() { |
| 62 fFontVariant = kDefault_Variant; |
| 63 } |
| 64 |
| 65 SkPaintOptionsAndroid& operator=(const SkPaintOptionsAndroid& b) { |
| 66 fLanguage = b.fLanguage; |
| 67 fFontVariant = b.fFontVariant; |
| 68 return *this; |
| 69 } |
| 70 |
| 71 bool operator==(const SkPaintOptionsAndroid& b) const { |
| 72 return !(*this != b); |
| 73 } |
| 74 |
| 75 bool operator!=(const SkPaintOptionsAndroid& b) const { |
| 76 return fLanguage != b.fLanguage || |
| 77 fFontVariant != b.fFontVariant; |
| 78 } |
| 79 |
| 80 void flatten(SkWriteBuffer&) const; |
| 81 void unflatten(SkReadBuffer&); |
| 82 |
| 83 /** Return the paint's language value used for drawing text. |
| 84 @return the paint's language value used for drawing text. |
| 85 */ |
| 86 const SkLanguage& getLanguage() const { return fLanguage; } |
| 87 |
| 88 /** Set the paint's language value used for drawing text. |
| 89 @param language set the paint's language value for drawing text. |
| 90 */ |
| 91 void setLanguage(const SkLanguage& language) { fLanguage = language; } |
| 92 void setLanguage(const char* languageTag) { fLanguage = SkLanguage(languageT
ag); } |
| 93 |
| 94 |
| 95 enum FontVariant { |
| 96 kDefault_Variant = 0x01, |
| 97 kCompact_Variant = 0x02, |
| 98 kElegant_Variant = 0x04, |
| 99 kLast_Variant = kElegant_Variant, |
| 100 }; |
| 101 |
| 102 /** Return the font variant |
| 103 @return the font variant used by this paint object |
| 104 */ |
| 105 FontVariant getFontVariant() const { return fFontVariant; } |
| 106 |
| 107 /** Set the font variant |
| 108 @param fontVariant set the paint's font variant for choosing fonts |
| 109 */ |
| 110 void setFontVariant(FontVariant fontVariant) { |
| 111 SkASSERT((unsigned)fontVariant <= kLast_Variant); |
| 112 fFontVariant = fontVariant; |
| 113 } |
| 114 |
| 115 private: |
| 116 SkLanguage fLanguage; |
| 117 FontVariant fFontVariant; |
| 118 }; |
| 119 |
| 120 #endif // #ifndef SkPaintOptionsAndroid_DEFINED |
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