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WindowServer: Improve occlusion calculations
This solves two problems: * A window was sometimes deemed occluded when the window rect was entirely covered by other rectangles, transparent or opaque. This caused a window to stop rendering even if a small portion was still visible, e.g. when it was merely covered by a window shadow. * The window switcher is interested in window updates even when a window is entirely covered by another one, or when it is on another desktop. This forces windows to be not occluded in those cases.
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2 changed files with 26 additions and 47 deletions
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@ -138,7 +138,6 @@ private:
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void start_compose_async_timer();
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void recompute_overlay_rects();
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void recompute_occlusions();
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bool any_opaque_window_above_this_one_contains_rect(Window&, const Gfx::IntRect&);
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void change_cursor(const Cursor*);
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void flush(Screen&);
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Gfx::IntPoint window_transition_offset(Window&);
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