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WindowServer: Blit backing bitmap with transparency for hung windows

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We should respect the opacity of the window when painting the window
content of a hung application.
This commit is contained in:
Tom 2021-02-10 23:30:55 -07:00 • committed by Andreas Kling
parent 130d48fa13
commit e1333724ea
1 changed files with 12 additions and 3 deletions
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15
Userland/Services/WindowServer/Compositor.cpp
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@ -345,9 +345,18 @@ void Compositor::compose()
auto dst = backing_rect.location().translated(dirty_rect_in_backing_coordinates.location());
if (window.client() && window.client()->is_unresponsive()) {
painter.blit_filtered(dst, *backing_store, dirty_rect_in_backing_coordinates, [](Color src) {
return src.to_grayscale().darkened(0.75f);
});
if (window.is_opaque()) {
painter.blit_filtered(dst, *backing_store, dirty_rect_in_backing_coordinates, [](Color src) {
return src.to_grayscale().darkened(0.75f);
});
} else {
u8 alpha = 255 * window.opacity();
painter.blit_filtered(dst, *backing_store, dirty_rect_in_backing_coordinates, [&](Color src) {
auto color = src.to_grayscale().darkened(0.75f);
color.set_alpha(alpha);
return color;
});
}
} else {
painter.blit(dst, *backing_store, dirty_rect_in_backing_coordinates, window.opacity());
}