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WindowServer: Fix minor flicker with transparent windows

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Do not fill the backing store mismatch area with the solid window
color if the window is transparent. This caused some minor flicker
when such a window is e.g. snapped to the left/right or maximized.
This commit is contained in:
Tom 2020-08-26 13:31:34 -06:00 committed by Andreas Kling
parent 9f7ec33180
commit 6ea7e67b62
Notes: sideshowbarker 2024-07-19 03:06:39 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/6ea7e67b622
Pull-request: https://github.com/SerenityOS/serenity/pull/3311
1 changed files with 4 additions and 2 deletions
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6
Services/WindowServer/Compositor.cpp
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@ -354,8 +354,10 @@ void Compositor::compose()
painter.blit(dst, *backing_store, dirty_rect_in_backing_coordinates, window.opacity());
}
for (auto background_rect : window.rect().shatter(backing_rect))
painter.fill_rect(background_rect, wm.palette().window());
if (window.is_opaque()) {
for (auto background_rect : window.rect().shatter(backing_rect))
painter.fill_rect(background_rect, wm.palette().window());
}
};
auto& dirty_rects = window.dirty_rects();