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1 // Copyright (C) 2011, Google Inc. All rights reserved. | |
2 // | |
3 // Redistribution and use in source and binary forms, with or without | |
4 // modification, are permitted provided that the following conditions are met: | |
5 // | |
6 // 1. Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // 2. Redistributions in binary form must reproduce the above copyright | |
9 // notice, this list of conditions and the following disclaimer in the | |
10 // documentation and/or other materials provided with the distribution. | |
11 // | |
12 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND | |
13 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
14 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
15 // ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE | |
16 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
17 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
18 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
19 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
20 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
21 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
22 // DAMAGE. | |
23 | |
24 #ifndef WebGamepad_h | |
25 #define WebGamepad_h | |
26 | |
27 #include "WebCommon.h" | |
28 | |
29 namespace blink { | |
30 | |
31 #pragma pack(push, 4) | |
32 | |
33 class WebGamepadButton { | |
34 public: | |
35 WebGamepadButton() : pressed(false), touched(false), value(0.) {} | |
36 WebGamepadButton(bool pressed, bool touched, double value) | |
37 : pressed(pressed), touched(touched), value(value) {} | |
38 bool pressed; | |
39 bool touched; | |
40 double value; | |
41 }; | |
42 | |
43 class WebGamepadVector { | |
44 public: | |
45 WebGamepadVector() : not_null(false) {} | |
46 | |
47 bool not_null; | |
48 float x, y, z; | |
49 }; | |
50 | |
51 class WebGamepadQuaternion { | |
52 public: | |
53 WebGamepadQuaternion() : not_null(false) {} | |
54 | |
55 bool not_null; | |
56 float x, y, z, w; | |
57 }; | |
58 | |
59 class WebGamepadPose { | |
60 public: | |
61 WebGamepadPose() : not_null(false) {} | |
62 | |
63 bool not_null; | |
64 | |
65 bool has_orientation; | |
66 bool has_position; | |
67 | |
68 WebGamepadQuaternion orientation; | |
69 WebGamepadVector position; | |
70 WebGamepadVector angular_velocity; | |
71 WebGamepadVector linear_velocity; | |
72 WebGamepadVector angular_acceleration; | |
73 WebGamepadVector linear_acceleration; | |
74 }; | |
75 | |
76 enum WebGamepadHand { | |
77 kGamepadHandNone = 0, | |
78 kGamepadHandLeft = 1, | |
79 kGamepadHandRight = 2 | |
80 }; | |
81 | |
82 // This structure is intentionally POD and fixed size so that it can be shared | |
83 // memory between hardware polling threads and the rest of the browser. See | |
84 // also WebGamepads.h. | |
85 class WebGamepad { | |
86 public: | |
87 static const size_t kIdLengthCap = 128; | |
88 static const size_t kMappingLengthCap = 16; | |
89 static const size_t kAxesLengthCap = 16; | |
90 static const size_t kButtonsLengthCap = 32; | |
91 | |
92 WebGamepad() | |
93 : connected(false), | |
94 timestamp(0), | |
95 axes_length(0), | |
96 buttons_length(0), | |
97 display_id(0) { | |
98 id[0] = 0; | |
99 mapping[0] = 0; | |
100 } | |
101 | |
102 // Is there a gamepad connected at this index? | |
103 bool connected; | |
104 | |
105 // Device identifier (based on manufacturer, model, etc.). | |
106 WebUChar id[kIdLengthCap]; | |
107 | |
108 // Monotonically increasing value referring to when the data were last | |
109 // updated. | |
110 unsigned long long timestamp; | |
111 | |
112 // Number of valid entries in the axes array. | |
113 unsigned axes_length; | |
114 | |
115 // Normalized values representing axes, in the range [-1..1]. | |
116 double axes[kAxesLengthCap]; | |
117 | |
118 // Number of valid entries in the buttons array. | |
119 unsigned buttons_length; | |
120 | |
121 // Button states | |
122 WebGamepadButton buttons[kButtonsLengthCap]; | |
123 | |
124 // Mapping type (for example "standard") | |
125 WebUChar mapping[kMappingLengthCap]; | |
126 | |
127 WebGamepadPose pose; | |
128 | |
129 WebGamepadHand hand; | |
130 | |
131 unsigned display_id; | |
132 }; | |
133 | |
134 #pragma pack(pop) | |
135 } | |
136 | |
137 #endif // WebGamepad_h | |
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