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LibThreading: Add ability to cancel ongoing BackgroundActions

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Handlers of the BackgroundAction are responsible for checking if the
action has been cancelled and returning early.
This commit is contained in:
Spencer Dixon 2021-07-02 10:34:19 -04:00 • committed by Andreas Kling
parent 4a3958c8ae
commit 00f93b2545
4 changed files with 18 additions and 7 deletions
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2
Userland/Services/WindowServer/Compositor.cpp
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@ -689,7 +689,7 @@ bool Compositor::set_wallpaper_mode(const String& mode)
bool Compositor::set_wallpaper(const String& path, Function<void(bool)>&& callback)
{
Threading::BackgroundAction<RefPtr<Gfx::Bitmap>>::create(
[path] {
[path](auto&) {
return Gfx::Bitmap::load_from_file(path);
},