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1 // Copyright (C) 2011, Google Inc. All rights reserved. | 1 // Copyright (C) 2011, Google Inc. All rights reserved. |
2 // | 2 // |
3 // Redistribution and use in source and binary forms, with or without | 3 // Redistribution and use in source and binary forms, with or without |
4 // modification, are permitted provided that the following conditions are met: | 4 // modification, are permitted provided that the following conditions are met: |
5 // | 5 // |
6 // 1. Redistributions of source code must retain the above copyright | 6 // 1. Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // 2. Redistributions in binary form must reproduce the above copyright | 8 // 2. Redistributions in binary form must reproduce the above copyright |
9 // notice, this list of conditions and the following disclaimer in the | 9 // notice, this list of conditions and the following disclaimer in the |
10 // documentation and/or other materials provided with the distribution. | 10 // documentation and/or other materials provided with the distribution. |
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27 #include "WebCommon.h" | 27 #include "WebCommon.h" |
28 | 28 |
29 #if BLINK_IMPLEMENTATION | 29 #if BLINK_IMPLEMENTATION |
30 #include "wtf/Assertions.h" | 30 #include "wtf/Assertions.h" |
31 #endif | 31 #endif |
32 | 32 |
33 namespace blink { | 33 namespace blink { |
34 | 34 |
35 #pragma pack(push, 1) | 35 #pragma pack(push, 1) |
36 | 36 |
37 #if defined(ENABLE_NEW_GAMEPAD_API) | |
38 class WebGamepadButton { | 37 class WebGamepadButton { |
39 public: | 38 public: |
40 WebGamepadButton() | 39 WebGamepadButton() |
41 : pressed(false) | 40 : pressed(false) |
42 , value(0.f) | 41 , value(0.f) |
43 { | 42 { |
44 } | 43 } |
45 WebGamepadButton(bool pressed, float value) | 44 WebGamepadButton(bool pressed, float value) |
46 : pressed(pressed) | 45 : pressed(pressed) |
47 , value(value) | 46 , value(value) |
48 { | 47 { |
49 } | 48 } |
50 bool pressed; | 49 bool pressed; |
51 float value; | 50 float value; |
52 }; | 51 }; |
53 #endif | |
54 | 52 |
55 // This structure is intentionally POD and fixed size so that it can be shared | 53 // This structure is intentionally POD and fixed size so that it can be shared |
56 // memory between hardware polling threads and the rest of the browser. See | 54 // memory between hardware polling threads and the rest of the browser. See |
57 // also WebGamepads.h. | 55 // also WebGamepads.h. |
58 class WebGamepad { | 56 class WebGamepad { |
59 public: | 57 public: |
60 static const size_t idLengthCap = 128; | 58 static const size_t idLengthCap = 128; |
61 static const size_t mappingLengthCap = 16; | 59 static const size_t mappingLengthCap = 16; |
62 static const size_t axesLengthCap = 16; | 60 static const size_t axesLengthCap = 16; |
63 static const size_t buttonsLengthCap = 32; | 61 static const size_t buttonsLengthCap = 32; |
64 | 62 |
65 WebGamepad() | 63 WebGamepad() |
66 : connected(false) | 64 : connected(false) |
67 , timestamp(0) | 65 , timestamp(0) |
68 , axesLength(0) | 66 , axesLength(0) |
69 , buttonsLength(0) | 67 , buttonsLength(0) |
70 { | 68 { |
71 id[0] = 0; | 69 id[0] = 0; |
72 #if defined(ENABLE_NEW_GAMEPAD_API) | |
73 mapping[0] = 0; | 70 mapping[0] = 0; |
74 #endif | |
75 } | 71 } |
76 | 72 |
77 // Is there a gamepad connected at this index? | 73 // Is there a gamepad connected at this index? |
78 bool connected; | 74 bool connected; |
79 | 75 |
80 // Device identifier (based on manufacturer, model, etc.). | 76 // Device identifier (based on manufacturer, model, etc.). |
81 WebUChar id[idLengthCap]; | 77 WebUChar id[idLengthCap]; |
82 | 78 |
83 // Monotonically increasing value referring to when the data were last | 79 // Monotonically increasing value referring to when the data were last |
84 // updated. | 80 // updated. |
85 unsigned long long timestamp; | 81 unsigned long long timestamp; |
86 | 82 |
87 // Number of valid entries in the axes array. | 83 // Number of valid entries in the axes array. |
88 unsigned axesLength; | 84 unsigned axesLength; |
89 | 85 |
90 // Normalized values representing axes, in the range [-1..1]. | 86 // Normalized values representing axes, in the range [-1..1]. |
91 float axes[axesLengthCap]; | 87 float axes[axesLengthCap]; |
92 | 88 |
93 // Number of valid entries in the buttons array. | 89 // Number of valid entries in the buttons array. |
94 unsigned buttonsLength; | 90 unsigned buttonsLength; |
95 | 91 |
96 #if defined(ENABLE_NEW_GAMEPAD_API) | |
97 // Button states | 92 // Button states |
98 WebGamepadButton buttons[buttonsLengthCap]; | 93 WebGamepadButton buttons[buttonsLengthCap]; |
99 | 94 |
100 // Mapping type (for example "standard") | 95 // Mapping type (for example "standard") |
101 WebUChar mapping[mappingLengthCap]; | 96 WebUChar mapping[mappingLengthCap]; |
102 #else | |
103 float buttons[buttonsLengthCap]; | |
104 #endif | |
105 }; | 97 }; |
106 | 98 |
107 #if BLINK_IMPLEMENTATION | 99 #if BLINK_IMPLEMENTATION |
108 #if defined(ENABLE_NEW_GAMEPAD_API) | |
109 COMPILE_ASSERT(sizeof(WebGamepad) == 529, WebGamepad_has_wrong_size); | 100 COMPILE_ASSERT(sizeof(WebGamepad) == 529, WebGamepad_has_wrong_size); |
110 #else | |
111 COMPILE_ASSERT(sizeof(WebGamepad) == 465, WebGamepad_has_wrong_size); | |
112 #endif | |
113 #endif | 101 #endif |
114 | 102 |
115 #pragma pack(pop) | 103 #pragma pack(pop) |
116 | 104 |
117 } | 105 } |
118 | 106 |
119 #endif // WebGamepad_h | 107 #endif // WebGamepad_h |
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