bool
WindowsGamepadService::ScanForXInputDevices()
{
MOZ_ASSERT(mXInput, "XInput should be present!");
bool found = false;
for (int i = 0; i < XUSER_MAX_COUNT; i++) {
XINPUT_STATE state = {};
if (mXInput.mXInputGetState(i, &state) != ERROR_SUCCESS) {
continue;
}
found = true;
// See if this device is already present in our list.
if (HaveXInputGamepad(i)) {
continue;
}
// Not already present, add it.
Gamepad gamepad = {};
gamepad.type = kXInputGamepad;
gamepad.present = true;
gamepad.state = state;
gamepad.userIndex = i;
gamepad.numButtons = kStandardGamepadButtons;
gamepad.numAxes = kStandardGamepadAxes;
gamepad.id = AddGamepad("xinput",
GamepadMappingType::Standard,
kStandardGamepadButtons,
kStandardGamepadAxes);
mGamepads.AppendElement(gamepad);
}
return found;
}
void
GamepadService::Update(const GamepadChangeEvent& aEvent)
{
if (aEvent.type() == GamepadChangeEvent::TGamepadAdded) {
const GamepadAdded& a = aEvent.get_GamepadAdded();
AddGamepad(a.index(), a.id(),
static_cast<GamepadMappingType>(a.mapping()),
a.num_buttons(), a.num_axes());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadRemoved) {
const GamepadRemoved& a = aEvent.get_GamepadRemoved();
RemoveGamepad(a.index());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadButtonInformation) {
const GamepadButtonInformation& a = aEvent.get_GamepadButtonInformation();
NewButtonEvent(a.index(), a.button(), a.pressed(), a.value());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadAxisInformation) {
const GamepadAxisInformation& a = aEvent.get_GamepadAxisInformation();
NewAxisMoveEvent(a.index(), a.axis(), a.value());
} else {
MOZ_CRASH("We shouldn't be here!");
}
}
