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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 ?
Sam Lantinga 2016-10-01 13:38:30 -07:00
parent 614cb35a4d
commit 13dd2ccda8
1 changed files with 17 additions and 1 deletions
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18
src/events/SDL_windowevents.c
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@ -70,6 +70,20 @@ RemovePendingMoveEvents(void * userdata, SDL_Event *event)
return 1; return 1;
} }
static int
RemovePendingExposedEvents(void * userdata, SDL_Event *event)
{
SDL_Event *new_event = (SDL_Event *)userdata;
if (event->type == SDL_WINDOWEVENT &&
event->window.event == SDL_WINDOWEVENT_EXPOSED &&
event->window.windowID == new_event->window.windowID) {
/* We're about to post a new exposed event, drop the old one */
return 0;
}
return 1;
}
int int
SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1, SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
int data2) int data2)
@ -195,7 +209,9 @@ SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
if (windowevent == SDL_WINDOWEVENT_MOVED) { if (windowevent == SDL_WINDOWEVENT_MOVED) {
SDL_FilterEvents(RemovePendingMoveEvents, &event); SDL_FilterEvents(RemovePendingMoveEvents, &event);
} }
if (windowevent == SDL_WINDOWEVENT_EXPOSED) {
SDL_FilterEvents(RemovePendingExposedEvents, &event);
}
posted = (SDL_PushEvent(&event) > 0); posted = (SDL_PushEvent(&event) > 0);
} }