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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_
#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_
#include "base/strings/string_piece.h"
#include "content/common/gamepad_hardware_buffer.h"
namespace content {
typedef void (*GamepadStandardMappingFunction)(
const blink::WebGamepad& original,
blink::WebGamepad* mapped);
GamepadStandardMappingFunction GetGamepadStandardMappingFunction(
const base::StringPiece& vendor_id,
const base::StringPiece& product_id);
// This defines our canonical mapping order for gamepad-like devices. If these
// items cannot all be satisfied, it is a case-by-case judgement as to whether
// it is better to leave the device unmapped, or to partially map it. In
// general, err towards leaving it *unmapped* so that content can handle
// appropriately.
enum CanonicalButtonIndex {
kButtonPrimary,
kButtonSecondary,
kButtonTertiary,
kButtonQuaternary,
kButtonLeftShoulder,
kButtonRightShoulder,
kButtonLeftTrigger,
kButtonRightTrigger,
kButtonBackSelect,
kButtonStart,
kButtonLeftThumbstick,
kButtonRightThumbstick,
kButtonDpadUp,
kButtonDpadDown,
kButtonDpadLeft,
kButtonDpadRight,
kButtonMeta,
kNumButtons
};
enum CanonicalAxisIndex {
kAxisLeftStickX,
kAxisLeftStickY,
kAxisRightStickX,
kAxisRightStickY,
kNumAxes
};
// Matches XInput's trigger deadzone
const float kDefaultButtonPressedThreshold = 30.f/255.f;
// Common mapping functions
blink::WebGamepadButton AxisToButton(float input);
blink::WebGamepadButton AxisNegativeAsButton(float input);
blink::WebGamepadButton AxisPositiveAsButton(float input);
blink::WebGamepadButton ButtonFromButtonAndAxis(
blink::WebGamepadButton button, float axis);
blink::WebGamepadButton NullButton();
void DpadFromAxis(blink::WebGamepad* mapped, float dir);
} // namespace content
#endif // CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_