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Implement keep_screen_on for Windows #63882

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merged 1 commit into from
Aug 5, 2022
Merged

Implement keep_screen_on for Windows #63882

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41 changes: 40 additions & 1 deletion platform/windows/display_server_windows.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -531,10 +531,43 @@ DisplayServer::ScreenOrientation DisplayServerWindows::screen_get_orientation(in
}

void DisplayServerWindows::screen_set_keep_on(bool p_enable) {
if (keep_screen_on == p_enable) {
return;
}

if (p_enable) {
const String reason = "Godot Engine running with display/window/energy_saving/keep_screen_on = true";
Char16String reason_utf16 = reason.utf16();

REASON_CONTEXT context;
context.Version = POWER_REQUEST_CONTEXT_VERSION;
context.Flags = POWER_REQUEST_CONTEXT_SIMPLE_STRING;
context.Reason.SimpleReasonString = (LPWSTR)(reason_utf16.ptrw());
power_request = PowerCreateRequest(&context);
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if (power_request == INVALID_HANDLE_VALUE) {
print_error("Failed to enable screen_keep_on.");
return;
}
if (PowerSetRequest(power_request, POWER_REQUEST_TYPE::PowerRequestSystemRequired) == 0) {
print_error("Failed to request system sleep override.");
return;
}
if (PowerSetRequest(power_request, POWER_REQUEST_TYPE::PowerRequestDisplayRequired) == 0) {
print_error("Failed to request display timeout override.");
return;
}
} else {
PowerClearRequest(power_request, POWER_REQUEST_TYPE::PowerRequestSystemRequired);
PowerClearRequest(power_request, POWER_REQUEST_TYPE::PowerRequestDisplayRequired);
CloseHandle(power_request);
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power_request = nullptr;
}

keep_screen_on = p_enable;
}

bool DisplayServerWindows::screen_is_kept_on() const {
return false;
return keep_screen_on;
}

Vector<DisplayServer::WindowID> DisplayServerWindows::get_window_list() const {
Expand Down Expand Up @@ -3619,6 +3652,9 @@ DisplayServerWindows::DisplayServerWindows(const String &p_rendering_driver, Win
// Init TTS
tts = memnew(TTS_Windows);

// Enforce default keep screen on value.
screen_set_keep_on(GLOBAL_DEF("display/window/energy_saving/keep_screen_on", true));

// Note: Wacom WinTab driver API for pen input, for devices incompatible with Windows Ink.
HMODULE wintab_lib = LoadLibraryW(L"wintab32.dll");
if (wintab_lib) {
Expand Down Expand Up @@ -3822,6 +3858,9 @@ DisplayServerWindows::~DisplayServerWindows() {
SetWindowLongPtr(windows[MAIN_WINDOW_ID].hWnd, GWLP_WNDPROC, (LONG_PTR)user_proc);
}

// Close power request handle.
screen_set_keep_on(false);

#ifdef GLES3_ENABLED
// destroy windows .. NYI?
// FIXME wglDeleteContext is never called
Expand Down
2 changes: 2 additions & 0 deletions platform/windows/display_server_windows.h
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Original file line number Diff line number Diff line change
Expand Up @@ -331,6 +331,8 @@ class DisplayServerWindows : public DisplayServer {
HINSTANCE hInstance; // Holds The Instance Of The Application
String rendering_driver;
bool app_focused = false;
bool keep_screen_on = false;
HANDLE power_request;

TTS_Windows *tts = nullptr;

Expand Down