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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 #ifdef SK_BUILD_FOR_ANDROID |
| 14 |
| 15 #include "SkString.h" |
| 16 #include "SkTypes.h" |
| 17 |
| 18 class SkFlattenableReadBuffer; |
| 19 class SkFlattenableWriteBuffer; |
| 20 |
| 21 /** \class SkLanguage |
| 22 |
| 23 The SkLanguage class represents a human written language, and is used by |
| 24 text draw operations to determine which glyph to draw when drawing |
| 25 characters with variants (ie Han-derived characters). |
| 26 */ |
| 27 class SkLanguage { |
| 28 public: |
| 29 SkLanguage() { } |
| 30 SkLanguage(const char* tag) : fTag(tag) { } |
| 31 SkLanguage(const char* tag, size_t len) : fTag(tag, len) { } |
| 32 SkLanguage(const SkLanguage& b) : fTag(b.fTag) { } |
| 33 |
| 34 /** Gets a BCP 47 language identifier for this SkLanguage. |
| 35 @return a BCP 47 language identifier representing this language |
| 36 */ |
| 37 const SkString& getTag() const { return fTag; } |
| 38 |
| 39 /** Performs BCP 47 fallback to return an SkLanguage one step more general. |
| 40 @return an SkLanguage one step more general |
| 41 */ |
| 42 SkLanguage getParent() const; |
| 43 |
| 44 bool operator==(const SkLanguage& b) const { |
| 45 return fTag == b.fTag; |
| 46 } |
| 47 bool operator!=(const SkLanguage& b) const { |
| 48 return fTag != b.fTag; |
| 49 } |
| 50 SkLanguage& operator=(const SkLanguage& b) { |
| 51 fTag = b.fTag; |
| 52 return *this; |
| 53 } |
| 54 |
| 55 private: |
| 56 //! BCP 47 language identifier |
| 57 SkString fTag; |
| 58 }; |
| 59 |
| 60 class SkPaintOptionsAndroid { |
| 61 public: |
| 62 SkPaintOptionsAndroid() { |
| 63 fFontVariant = kDefault_Variant; |
| 64 } |
| 65 |
| 66 SkPaintOptionsAndroid& operator=(const SkPaintOptionsAndroid& b) { |
| 67 fLanguage = b.fLanguage; |
| 68 fFontVariant = b.fFontVariant; |
| 69 return *this; |
| 70 } |
| 71 |
| 72 bool operator!=(const SkPaintOptionsAndroid& b) const { |
| 73 return fLanguage != b.fLanguage || fFontVariant != b.fFontVariant; |
| 74 } |
| 75 |
| 76 void flatten(SkFlattenableWriteBuffer&) const; |
| 77 void unflatten(SkFlattenableReadBuffer&); |
| 78 |
| 79 /** Return the paint's language value used for drawing text. |
| 80 @return the paint's language value used for drawing text. |
| 81 */ |
| 82 const SkLanguage& getLanguage() const { return fLanguage; } |
| 83 |
| 84 /** Set the paint's language value used for drawing text. |
| 85 @param language set the paint's language value for drawing text. |
| 86 */ |
| 87 void setLanguage(const SkLanguage& language) { fLanguage = language; } |
| 88 void setLanguage(const char* languageTag) { fLanguage = SkLanguage(languageT
ag); } |
| 89 |
| 90 |
| 91 enum FontVariant { |
| 92 kDefault_Variant, // Currently setting yourself to Default gives you Comp
act Variant |
| 93 kCompact_Variant, |
| 94 kElegant_Variant, |
| 95 kLast_Variant = kElegant_Variant, |
| 96 }; |
| 97 |
| 98 /** Return the font variant |
| 99 @return the font variant used by this paint object |
| 100 */ |
| 101 FontVariant getFontVariant() const { return fFontVariant; } |
| 102 |
| 103 /** Set the font variant |
| 104 @param fontVariant set the paint's font variant for choosing fonts |
| 105 */ |
| 106 void setFontVariant(FontVariant fontVariant) { |
| 107 SkASSERT((unsigned)fontVariant <= kLast_Variant); |
| 108 fFontVariant = fontVariant; |
| 109 } |
| 110 |
| 111 private: |
| 112 SkLanguage fLanguage; |
| 113 FontVariant fFontVariant; |
| 114 }; |
| 115 |
| 116 #endif // #ifdef SK_BUILD_FOR_ANDROID |
| 117 #endif // #ifndef SkPaintOptionsAndroid_DEFINED |
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