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Batch mouse move events for high DPI mice

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This commit is contained in:
Cameron Gutman
2018-09-04 00:37:21 -04:00
parent dae21f2638
commit 203b2fcaca
1 changed files with 22 additions and 3 deletions
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25
app/streaming/input.cpp
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@@ -388,10 +388,29 @@ void SdlInputHandler::handleMouseMotionEvent(SDL_MouseMotionEvent* event)
// Not capturing
return;
}
short xdelta = (short)event->xrel;
short ydelta = (short)event->yrel;
if (event->xrel != 0 || event->yrel != 0) {
LiSendMouseMoveEvent((short)event->xrel,
(short)event->yrel);
// Delay for 1 ms to allow batching of mouse move
// events from high DPI mice.
SDL_Delay(1);
SDL_PumpEvents();
SDL_Event nextEvent;
while (SDL_PeepEvents(&nextEvent,
1,
SDL_GETEVENT,
SDL_MOUSEMOTION,
SDL_MOUSEMOTION) == 1) {
// In theory, these can overflow but in practice
// it should be highly unlikely since it would require
// moving 64K pixels in 1 ms.
xdelta += nextEvent.motion.xrel;
ydelta += nextEvent.motion.yrel;
}
if (xdelta != 0 || ydelta != 0) {
LiSendMouseMoveEvent(xdelta, ydelta);
}
}