Gamepad API for Android

content/browser/gamepad/gamepad_standard_mappings.h

 // 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.
 
+// TODO(b.kelemen): generate this via canonical_button_list.h and
+// canonical_axes_list.h.
+

[jdduke (slow), 2014/03/07 23:16:39]

Please file a bug.  Until we adopt the mentioned header templates, we should use
a function to translate between the two enum types.

[kbalazs, 2014/03/12 00:17:36]

Bug filed: http://crbug.com/351558

 enum CanonicalButtonIndex {
   kButtonPrimary,
   kButtonSecondary,
   kButtonTertiary,
   kButtonQuaternary,
   kButtonLeftShoulder,
   kButtonRightShoulder,
   kButtonLeftTrigger,
   kButtonRightTrigger,
   kButtonBackSelect,
@@ skipping 21 matching lines @@
 
 // Common mapping functions
 blink::WebGamepadButton AxisToButton(float input);
 blink::WebGamepadButton AxisNegativeAsButton(float input);
 blink::WebGamepadButton AxisPositiveAsButton(float input);
 void DpadFromAxis(blink::WebGamepad* mapped, float dir);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_STANDARD_MAPPINGS_H_