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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkValue_DEFINED | 8 #ifndef SkValue_DEFINED |
9 #define SkValue_DEFINED | 9 #define SkValue_DEFINED |
10 | 10 |
11 #include "SkTypes.h" | 11 #include "SkTypes.h" |
12 #include <functional> | 12 #include <functional> |
13 | 13 |
| 14 class SkData; |
| 15 |
14 class SkValue { | 16 class SkValue { |
15 public: | 17 public: |
16 enum Type : uint32_t { | 18 enum Type : uint32_t { |
17 // 0-255 are reserved for built-in SkValue types. | 19 // 0-255 are reserved for built-in SkValue types. |
18 Null, | 20 Null, |
19 Byte , S16 , U16 , S32 , U32 , S64 , U64 , F32 , F64 , | 21 Byte , S16 , U16 , S32 , U32 , S64 , U64 , F32 , F64 , |
20 Bytes, S16s, U16s, S32s, U32s, S64s, U64s, F32s, F64s, | 22 Bytes, S16s, U16s, S32s, U32s, S64s, U64s, F32s, F64s, |
21 Array, | 23 Array, |
22 | 24 |
| 25 kMaxBuiltin = 0xFF, |
23 // 256-2147483647 may be used by Skia for public Object types. | 26 // 256-2147483647 may be used by Skia for public Object types. |
24 | 27 |
| 28 Matrix, |
25 | 29 |
26 // 2147483648+ won't be used by Skia. They're open for client-specific
use, testing, etc. | 30 kMaxPublicObject = 0x7FFFFFFF, |
| 31 // 2147483648+ won't be used by Skia. They're open for |
| 32 // client-specific use, testing, etc. |
27 }; | 33 }; |
28 | 34 |
29 enum Key : uint32_t { | 35 // Each Object type may define its own namespace of Key values, |
30 // Each Object type may define its own namespace of Key values, | 36 // so there are no pre-defined Keys here. |
31 // so there are no pre-defined Keys here. | 37 // |
32 // | 38 // This is just a reminder that they must fit in a uint32_t, |
33 // This is just a reminder that they must fit in a uint32_t, | 39 // and that their namespace is distinct from other uint32_ts (e.g. Type). |
34 // and that their namespace is distinct from other uint32_ts (e.g. Type)
. | 40 typedef uint32_t Key; |
35 }; | |
36 | 41 |
37 SkValue(); | 42 SkValue(); |
38 SkValue(const SkValue&); | 43 SkValue(const SkValue&); |
39 SkValue(SkValue&&); | 44 SkValue(SkValue&&); |
40 | 45 |
41 SkValue& operator=(const SkValue&); | 46 SkValue& operator=(const SkValue&); |
42 SkValue& operator=(SkValue&&); | 47 SkValue& operator=(SkValue&&); |
43 | 48 |
44 ~SkValue(); | 49 ~SkValue(); |
45 | 50 |
46 static SkValue FromS32(int32_t); | 51 static SkValue FromS32(int32_t); |
47 static SkValue FromU32(uint32_t); | 52 static SkValue FromU32(uint32_t); |
48 static SkValue FromF32(float); | 53 static SkValue FromF32(float); |
49 static SkValue FromBytes(const void*, size_t); // Copies. | 54 static SkValue FromBytes(SkData*); |
| 55 static SkValue FromU16s(SkData*); |
| 56 static SkValue FromU32s(SkData*); |
| 57 static SkValue FromF32s(SkData*); |
| 58 static SkValue ValueArray(); |
50 static SkValue Object(Type); | 59 static SkValue Object(Type); |
51 | 60 |
52 Type type() const; | 61 Type type() const { return fType; } |
53 | 62 |
54 // These remaining methods may assert they're called on a value of the appro
priate type. | 63 // These remaining methods may assert they're called on a value of the appro
priate type. |
55 | 64 |
56 int32_t s32() const; | 65 int32_t s32() const; |
57 uint32_t u32() const; | 66 uint32_t u32() const; |
58 float f32() const; | 67 float f32() const; |
| 68 SkData* bytes() const; |
59 | 69 |
60 const void* bytes() const; | 70 const uint16_t* u16s(int* count) const; |
61 size_t count() const; | 71 const uint32_t* u32s(int* count) const; |
| 72 const float* f32s(int* count) const; |
62 | 73 |
| 74 // Object |
63 void set(Key, SkValue); | 75 void set(Key, SkValue); |
64 const SkValue* get(Key) const; | |
65 void foreach(std::function<void(Key, const SkValue&)>) const; | 76 void foreach(std::function<void(Key, const SkValue&)>) const; |
66 | 77 |
| 78 // Array |
| 79 size_t length() const; |
| 80 const SkValue& at(size_t) const; |
| 81 void append(SkValue); |
| 82 |
67 private: | 83 private: |
68 class Bytes; | 84 class Obj; |
69 class Object; | 85 class Arr; |
70 | 86 |
71 Type fType; | 87 Type fType; |
72 union { | 88 union { |
73 int32_t fS32; | 89 int32_t fS32; |
74 uint32_t fU32; | 90 uint32_t fU32; |
75 float fF32; | 91 float fF32; |
76 class Bytes* fBytes; | 92 SkData* fBytes; |
77 class Object* fObject; | 93 Obj* fObject; |
| 94 Arr* fArray; |
78 }; | 95 }; |
| 96 |
| 97 SkValue(Type); |
| 98 bool isObject() const { return fType > kMaxBuiltin; } |
| 99 bool isData() const { |
| 100 return Bytes == fType |
| 101 || U16s == fType |
| 102 || U32s == fType |
| 103 || F32s == fType; |
| 104 } |
| 105 template <typename T> static SkValue FromT(SkValue::Type, T SkValue::*, T); |
| 106 template <typename T> static SkValue FromTs(SkValue::Type, SkData*); |
| 107 template <typename T> const T* asTs(SkValue::Type, int*) const; |
79 }; | 108 }; |
80 | 109 |
81 #endif//SkValue_DEFINED | 110 template <typename T> |
| 111 SkValue SkToValue(const T&); |
| 112 |
| 113 template <typename T> |
| 114 bool SkFromValue(const SkValue&, T*); |
| 115 |
| 116 #endif // SkValue_DEFINED |
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