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// Copyright 2014 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/browser/gamepad/gamepad_standard_mappings.h"
namespace content {
blink::WebGamepadButton AxisToButton(float input) {
float value = (input + 1.f) / 2.f;
return blink::WebGamepadButton(
value > kDefaultButtonPressedThreshold, value);
}
blink::WebGamepadButton AxisNegativeAsButton(float input) {
float value = (input < -0.5f) ? 1.f : 0.f;
return blink::WebGamepadButton(
value > kDefaultButtonPressedThreshold, value);
}
blink::WebGamepadButton AxisPositiveAsButton(float input) {
float value = (input > 0.5f) ? 1.f : 0.f;
return blink::WebGamepadButton(
value > kDefaultButtonPressedThreshold, value);
}
blink::WebGamepadButton ButtonFromButtonAndAxis(
blink::WebGamepadButton button, float axis) {
float value = (axis + 1.f) / 2.f;
return blink::WebGamepadButton(button.pressed, value);
}
blink::WebGamepadButton NullButton() {
return blink::WebGamepadButton(false, 0.0);
}
void DpadFromAxis(blink::WebGamepad* mapped, float dir) {
bool up = false;
bool right = false;
bool down = false;
bool left = false;
// Dpad is mapped as a direction on one axis, where -1 is up and it
// increases clockwise to 1, which is up + left. It's set to a large (> 1.f)
// number when nothing is depressed, except on start up, sometimes it's 0.0
// for no data, rather than the large number.
if (dir != 0.0f) {
up = (dir >= -1.f && dir < -0.7f) || (dir >= .95f && dir <= 1.f);
right = dir >= -.75f && dir < -.1f;
down = dir >= -.2f && dir < .45f;
left = dir >= .4f && dir <= 1.f;
}
mapped->buttons[BUTTON_INDEX_DPAD_UP].pressed = up;
mapped->buttons[BUTTON_INDEX_DPAD_UP].value = up ? 1.f : 0.f;
mapped->buttons[BUTTON_INDEX_DPAD_RIGHT].pressed = right;
mapped->buttons[BUTTON_INDEX_DPAD_RIGHT].value = right ? 1.f : 0.f;
mapped->buttons[BUTTON_INDEX_DPAD_DOWN].pressed = down;
mapped->buttons[BUTTON_INDEX_DPAD_DOWN].value = down ? 1.f : 0.f;
mapped->buttons[BUTTON_INDEX_DPAD_LEFT].pressed = left;
mapped->buttons[BUTTON_INDEX_DPAD_LEFT].value = left ? 1.f : 0.f;
}
} // namespace content
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