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SDL: Check if touchpad exists before getting input

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Verify a touchpad is present before polling it for input. Without this
check the Debug log is spammed with the message "error: Parameter
'touchpad' is invalid" if you have a controller without a touchpad.

One would think every touchpad supports at least 1 finger, but in case
there's some weird edge case check the finger count to be sure.
This commit is contained in:
Dentomologist 2025-05-02 17:17:39 -07:00
parent 63572f15fc
commit 77744169be
1 changed files with 9 additions and 5 deletions
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14
Source/Core/InputCommon/ControllerInterface/SDL/SDLGamepad.h
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@ -362,11 +362,15 @@ public:
const int touchpad_index = 0;
const int finger_index = 0;
Uint8 state = 0;
SDL_GameControllerGetTouchpadFinger(m_gamecontroller, touchpad_index, finger_index, &state,
&m_touchpad_x, &m_touchpad_y, &m_touchpad_pressure);
m_touchpad_x = m_touchpad_x * 2 - 1;
m_touchpad_y = m_touchpad_y * 2 - 1;
if (SDL_GameControllerGetNumTouchpads(m_gamecontroller) > touchpad_index &&
SDL_GameControllerGetNumTouchpadFingers(m_gamecontroller, touchpad_index) > finger_index)
{
Uint8 state = 0;
SDL_GameControllerGetTouchpadFinger(m_gamecontroller, touchpad_index, finger_index, &state,
&m_touchpad_x, &m_touchpad_y, &m_touchpad_pressure);
m_touchpad_x = m_touchpad_x * 2 - 1;
m_touchpad_y = m_touchpad_y * 2 - 1;
}
return Core::DeviceRemoval::Keep;
}