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WindowServer: Let clients mark windows as stealable by specific clients

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This implements window stealing in WindowServer, which allows clients
to mark a window they own as 'stealable' by another client. Indicating
that the other client may use it for any purpose.

This also updates set_window_parent_from_id so that the client must
first mark its window as stealable before allowing other clients to
use it as a parent.
This commit is contained in:
Timothy 2021-07-17 10:41:36 +10:00 • committed by Andreas Kling
parent f5e0475bdf
commit 9e04ab936f
4 changed files with 54 additions and 1 deletions
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11
Userland/Services/WindowServer/Window.h
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@ -362,6 +362,16 @@ public:
void set_moving_to_another_stack(bool value) { m_moving_to_another_stack = value; }
bool is_moving_to_another_stack() const { return m_moving_to_another_stack; }
void add_stealing_for_client(i32 client_id) { m_stealable_by_client_ids.append(move(client_id)); }
void remove_stealing_for_client(i32 client_id)
{
m_stealable_by_client_ids.remove_all_matching([client_id](i32 approved_client_id) {
return approved_client_id == client_id;
});
}
void remove_all_stealing() { m_stealable_by_client_ids.clear(); }
bool is_stealable_by_client(i32 client_id) const { return m_stealable_by_client_ids.contains_slow(client_id); }
private:
Window(ClientConnection&, WindowType, int window_id, bool modal, bool minimizable, bool frameless, bool resizable, bool fullscreen, bool accessory, Window* parent_window = nullptr);
Window(Core::Object&, WindowType);
@ -418,6 +428,7 @@ private:
bool m_pinned { false };
bool m_moving_to_another_stack { false };
bool m_invalidate_last_render_rects { false };
Vector<i32> m_stealable_by_client_ids;
WindowTileType m_tiled { WindowTileType::None };
Gfx::IntRect m_untiled_rect;
bool m_occluded { false };