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Fixed bug 3161 - SDL_WINDOWEVENT_EXPOSED event possible queue overflow
Marcel Bakker Observed when resizing or moving a window in Windows 7. Depending on how you resize/move your window , you may receive none or a lot of SDL_WINDOWEVENT_EXPOSED events , at the moment you release the mouse button. Maybe add this event to an already existing list of overflow candidates ?
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@ -70,6 +70,20 @@ RemovePendingMoveEvents(void * userdata, SDL_Event *event)
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return 1;
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}
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static int
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RemovePendingExposedEvents(void * userdata, SDL_Event *event)
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{
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SDL_Event *new_event = (SDL_Event *)userdata;
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if (event->type == SDL_WINDOWEVENT &&
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event->window.event == SDL_WINDOWEVENT_EXPOSED &&
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event->window.windowID == new_event->window.windowID) {
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/* We're about to post a new exposed event, drop the old one */
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return 0;
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}
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return 1;
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}
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int
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SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
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int data2)
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@ -195,7 +209,9 @@ SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
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if (windowevent == SDL_WINDOWEVENT_MOVED) {
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SDL_FilterEvents(RemovePendingMoveEvents, &event);
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}
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if (windowevent == SDL_WINDOWEVENT_EXPOSED) {
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SDL_FilterEvents(RemovePendingExposedEvents, &event);
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}
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posted = (SDL_PushEvent(&event) > 0);
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}
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