WIP: prepare border painter

Yuhang Zhao

2023-12-11 5c471560256776f17f1e3d5c377c7d3e9fdcc0f1

 src/core/windowagentbase_p.h

@@ -22,6 +22,12 @@

        std::unique_ptr<AbstractWindowContext> context;

    public:
        using WindowContextFactoryMethod = AbstractWindowContext *(*) ();

        static WindowContextFactoryMethod windowContextFactoryMethod;

    private:
        Q_DISABLE_COPY_MOVE(WindowAgentBasePrivate)
    };