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Enable Mouse Keys while streaming for systems with no mouse plugged in #721

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Merged
ReenigneArcher merged 1 commit into from
Jan 7, 2023
Merged

Enable Mouse Keys while streaming for systems with no mouse plugged in #721

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41 changes: 41 additions & 0 deletions src/platform/windows/misc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,9 @@ using namespace std::literals;
namespace platf {
using adapteraddrs_t = util::c_ptr<IP_ADAPTER_ADDRESSES>;

bool enabled_mouse_keys = false;
MOUSEKEYS previous_mouse_keys_state;

std::filesystem::path appdata() {
WCHAR sunshine_path[MAX_PATH];
GetModuleFileNameW(NULL, sunshine_path, _countof(sunshine_path));
Expand Down Expand Up @@ -512,6 +515,35 @@ void streaming_will_start() {

// Promote ourselves to high priority class
SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);

// If there is no mouse connected, enable Mouse Keys to force the cursor to appear
if(!GetSystemMetrics(SM_MOUSEPRESENT)) {
BOOST_LOG(info) << "A mouse was not detected. Sunshine will enable Mouse Keys while streaming to force the mouse cursor to appear.";

// Get the current state of Mouse Keys so we can restore it when streaming is over
previous_mouse_keys_state.cbSize = sizeof(previous_mouse_keys_state);
if(SystemParametersInfoW(SPI_GETMOUSEKEYS, 0, &previous_mouse_keys_state, 0)) {
MOUSEKEYS new_mouse_keys_state = {};

// Enable Mouse Keys
new_mouse_keys_state.cbSize = sizeof(new_mouse_keys_state);
new_mouse_keys_state.dwFlags = MKF_MOUSEKEYSON | MKF_AVAILABLE;
new_mouse_keys_state.iMaxSpeed = 10;
new_mouse_keys_state.iTimeToMaxSpeed = 1000;
if(SystemParametersInfoW(SPI_SETMOUSEKEYS, 0, &new_mouse_keys_state, 0)) {
// Remember to restore the previous settings when we stop streaming
enabled_mouse_keys = true;
}
else {
auto winerr = GetLastError();
BOOST_LOG(warning) << "Unable to enable Mouse Keys: "sv << winerr;
}
}
else {
auto winerr = GetLastError();
BOOST_LOG(warning) << "Unable to get current state of Mouse Keys: "sv << winerr;
}
}
}

void streaming_will_stop() {
Expand All @@ -523,6 +555,15 @@ void streaming_will_stop() {

// Disable MMCSS scheduling for DWM
DwmEnableMMCSS(false);

// Restore Mouse Keys back to the previous settings if we turned it on
if(enabled_mouse_keys) {
enabled_mouse_keys = false;
if(!SystemParametersInfoW(SPI_SETMOUSEKEYS, 0, &previous_mouse_keys_state, 0)) {
auto winerr = GetLastError();
BOOST_LOG(warning) << "Unable to restore original state of Mouse Keys: "sv << winerr;
}
}
}

bool restart_supported() {
Expand Down