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Implement SuspendScreenSaver for Win32

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Creating a full-screen SDL renderer on Windows will keep the screensaver
suspended by DirectX, as is default for full-screen DX applications. However,
for applications that render in windowed-mode, the screensaver will
still kick in, even if SDL_DisableScreenSaver() is called or
SDL_HINT_VIDEO_ALLOW_SCREENSAVER is set to 0 (default). Implementing
a SuspendScreenSaver() function for Win32 fixes this behavior.
This commit is contained in:
Cameron Gutman 2018-10-09 23:01:43 -07:00
parent 04cbf13261
commit eff5f65096
1 changed files with 10 additions and 0 deletions
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10
src/video/windows/SDL_windowsvideo.c
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@ -63,6 +63,15 @@ UpdateWindowFrameUsableWhileCursorHidden(void *userdata, const char *name, const
}
}
static void WIN_SuspendScreenSaver(_THIS)
{
if (_this->suspend_screensaver) {
SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
} else {
SetThreadExecutionState(ES_CONTINUOUS);
}
}
/* Windows driver bootstrap functions */
@ -136,6 +145,7 @@ WIN_CreateDevice(int devindex)
device->GetDisplayModes = WIN_GetDisplayModes;
device->SetDisplayMode = WIN_SetDisplayMode;
device->PumpEvents = WIN_PumpEvents;
device->SuspendScreenSaver = WIN_SuspendScreenSaver;
device->CreateSDLWindow = WIN_CreateWindow;
device->CreateSDLWindowFrom = WIN_CreateWindowFrom;