1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_ 6 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_ 7 8 #include "base/strings/string_piece.h" 9 #include "content/common/gamepad_hardware_buffer.h" 10 11 namespace content { 12 13 typedef void (*GamepadStandardMappingFunction)( 14 const blink::WebGamepad& original, 15 blink::WebGamepad* mapped); 16 17 GamepadStandardMappingFunction GetGamepadStandardMappingFunction( 18 const base::StringPiece& vendor_id, 19 const base::StringPiece& product_id); 20 21 // This defines our canonical mapping order for gamepad-like devices. If these 22 // items cannot all be satisfied, it is a case-by-case judgement as to whether 23 // it is better to leave the device unmapped, or to partially map it. In 24 // general, err towards leaving it *unmapped* so that content can handle 25 // appropriately. 26 27 enum CanonicalButtonIndex { 28 kButtonPrimary, 29 kButtonSecondary, 30 kButtonTertiary, 31 kButtonQuaternary, 32 kButtonLeftShoulder, 33 kButtonRightShoulder, 34 kButtonLeftTrigger, 35 kButtonRightTrigger, 36 kButtonBackSelect, 37 kButtonStart, 38 kButtonLeftThumbstick, 39 kButtonRightThumbstick, 40 kButtonDpadUp, 41 kButtonDpadDown, 42 kButtonDpadLeft, 43 kButtonDpadRight, 44 kButtonMeta, 45 kNumButtons 46 }; 47 48 enum CanonicalAxisIndex { 49 kAxisLeftStickX, 50 kAxisLeftStickY, 51 kAxisRightStickX, 52 kAxisRightStickY, 53 kNumAxes 54 }; 55 56 // Matches XInput's trigger deadzone 57 const float kDefaultButtonPressedThreshold = 30.f/255.f; 58 59 // Common mapping functions 60 blink::WebGamepadButton AxisToButton(float input); 61 blink::WebGamepadButton AxisNegativeAsButton(float input); 62 blink::WebGamepadButton AxisPositiveAsButton(float input); 63 blink::WebGamepadButton ButtonFromButtonAndAxis( 64 blink::WebGamepadButton button, float axis); 65 blink::WebGamepadButton NullButton(); 66 void DpadFromAxis(blink::WebGamepad* mapped, float dir); 67 68 } // namespace content 69 70 #endif // CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_ 71
