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comparison: gfx/skia/trunk/include/core/SkFlattenable.h
gfx/skia/trunk/include/core/SkFlattenable.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:c80b628be230 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2006 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 SkFlattenable_DEFINED | |
| 11 #define SkFlattenable_DEFINED | |
| 12 | |
| 13 #include "SkRefCnt.h" | |
| 14 | |
| 15 class SkReadBuffer; | |
| 16 class SkWriteBuffer; | |
| 17 | |
| 18 #define SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(flattenable) \ | |
| 19 SkFlattenable::Registrar(#flattenable, flattenable::CreateProc, \ | |
| 20 flattenable::GetFlattenableType()); | |
| 21 | |
| 22 #define SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() static void InitializeFlattenables(); | |
| 23 | |
| 24 #define SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(flattenable) \ | |
| 25 void flattenable::InitializeFlattenables() { | |
| 26 | |
| 27 #define SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END \ | |
| 28 } | |
| 29 | |
| 30 #define SK_DECLARE_UNFLATTENABLE_OBJECT() \ | |
| 31 virtual Factory getFactory() const SK_OVERRIDE { return NULL; } | |
| 32 | |
| 33 #define SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(flattenable) \ | |
| 34 virtual Factory getFactory() const SK_OVERRIDE { return CreateProc; } \ | |
| 35 static SkFlattenable* CreateProc(SkReadBuffer& buffer) { \ | |
| 36 return SkNEW_ARGS(flattenable, (buffer)); \ | |
| 37 } | |
| 38 | |
| 39 /** For SkFlattenable derived objects with a valid type | |
| 40 This macro should only be used in base class objects in core | |
| 41 */ | |
| 42 #define SK_DEFINE_FLATTENABLE_TYPE(flattenable) \ | |
| 43 static Type GetFlattenableType() { \ | |
| 44 return k##flattenable##_Type; \ | |
| 45 } | |
| 46 | |
| 47 /** \class SkFlattenable | |
| 48 | |
| 49 SkFlattenable is the base class for objects that need to be flattened | |
| 50 into a data stream for either transport or as part of the key to the | |
| 51 font cache. | |
| 52 */ | |
| 53 class SK_API SkFlattenable : public SkRefCnt { | |
| 54 public: | |
| 55 enum Type { | |
| 56 kSkColorFilter_Type, | |
| 57 kSkDrawLooper_Type, | |
| 58 kSkImageFilter_Type, | |
| 59 kSkMaskFilter_Type, | |
| 60 kSkPathEffect_Type, | |
| 61 kSkPixelRef_Type, | |
| 62 kSkRasterizer_Type, | |
| 63 kSkShader_Type, | |
| 64 kSkUnitMapper_Type, | |
| 65 kSkXfermode_Type, | |
| 66 }; | |
| 67 | |
| 68 SK_DECLARE_INST_COUNT(SkFlattenable) | |
| 69 | |
| 70 typedef SkFlattenable* (*Factory)(SkReadBuffer&); | |
| 71 | |
| 72 SkFlattenable() {} | |
| 73 | |
| 74 /** Implement this to return a factory function pointer that can be called | |
| 75 to recreate your class given a buffer (previously written to by your | |
| 76 override of flatten(). | |
| 77 */ | |
| 78 virtual Factory getFactory() const = 0; | |
| 79 | |
| 80 /** Returns the name of the object's class | |
| 81 */ | |
| 82 const char* getTypeName() const { return FactoryToName(getFactory()); } | |
| 83 | |
| 84 static Factory NameToFactory(const char name[]); | |
| 85 static const char* FactoryToName(Factory); | |
| 86 static bool NameToType(const char name[], Type* type); | |
| 87 | |
| 88 static void Register(const char name[], Factory, Type); | |
| 89 | |
| 90 class Registrar { | |
| 91 public: | |
| 92 Registrar(const char name[], Factory factory, Type type) { | |
| 93 SkFlattenable::Register(name, factory, type); | |
| 94 } | |
| 95 }; | |
| 96 | |
| 97 /** Override this to write data specific to your subclass into the buffer, | |
| 98 being sure to call your super-class' version first. This data will later | |
| 99 be passed to your Factory function, returned by getFactory(). | |
| 100 */ | |
| 101 virtual void flatten(SkWriteBuffer&) const; | |
| 102 | |
| 103 protected: | |
| 104 SkFlattenable(SkReadBuffer&) {} | |
| 105 | |
| 106 private: | |
| 107 static void InitializeFlattenablesIfNeeded(); | |
| 108 | |
| 109 friend class SkGraphics; | |
| 110 | |
| 111 typedef SkRefCnt INHERITED; | |
| 112 }; | |
| 113 | |
| 114 #endif |
