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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.
#include "content/common/gamepad_user_gesture.h"
#include <math.h>
#include <algorithm>
#include "third_party/WebKit/public/platform/WebGamepads.h"
namespace {
// A big enough deadzone to detect accidental presses.
const float kAxisMoveAmountThreshold = 0.5;
}
namespace content {
bool GamepadsHaveUserGesture(const blink::WebGamepads& gamepads) {
for (unsigned int i = 0; i < blink::WebGamepads::itemsLengthCap; i++) {
const blink::WebGamepad& pad = gamepads.items[i];
// If the device is physically connected, then check the buttons and axes
// to see if there is currently an intentional user action.
if (pad.connected) {
for (unsigned int button_index = 0; button_index < pad.buttonsLength;
button_index++) {
if (pad.buttons[button_index].pressed)
return true;
}
for (unsigned int axes_index = 0; axes_index < pad.axesLength;
axes_index++) {
if (fabs(pad.axes[axes_index]) > kAxisMoveAmountThreshold)
return true;
}
}
}
return false;
}
} // namespace content
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