LibGUI: Implement attributes for windows

Windows can now change whether they have title bar, rounded corners,
alpha channel and whether they are movable. Also windows can also change
their own position

userspace/libraries/LibGUI/include/LibGUI/Packet.h

@@ -160,6 +160,8 @@ namespace LibGUI
 		WindowCreate,
 		WindowCreateResponse,
 		WindowInvalidate,
+		WindowSetPosition,
+		WindowSetAttributes,
 
 		DestroyWindowEvent,
 		CloseWindowEvent,
@@ -179,6 +181,8 @@ namespace LibGUI
 		);
 
 		DEFINE_PACKET(WindowCreateResponse,
+			uint32_t, width,
+			uint32_t, height,
 			long, smo_key
 		);
 
@@ -189,6 +193,18 @@ namespace LibGUI
 			uint32_t, height
 		);
 
+		DEFINE_PACKET(WindowSetPosition,
+			int32_t, x,
+			int32_t, y
+		);
+
+		DEFINE_PACKET(WindowSetAttributes,
+			bool, title_bar,
+			bool, rounded_corners,
+			bool, movable,
+			bool, alpha_channel
+		);
+
 	}
 
 	namespace EventPacket

userspace/libraries/LibGUI/include/LibGUI/Window.h

@@ -13,6 +13,15 @@ namespace LibGUI
 
 	class Window
 	{
+	public:
+		struct Attributes
+		{
+			bool title_bar       { true };
+			bool movable         { true };
+			bool rounded_corners { true };
+			bool alpha_channel   { false };
+		};
+
 	public:
 		~Window();
 
@@ -49,6 +58,11 @@ namespace LibGUI
 		bool invalidate(int32_t x, int32_t y, uint32_t width, uint32_t height);
 		bool invalidate() { return invalidate(0, 0, width(), height()); }
 
+		bool set_position(int32_t x, int32_t y);
+
+		Attributes get_attributes() const { return m_attributes; }
+		bool set_attributes(Attributes attributes);
+
 		uint32_t width() const { return m_width; }
 		uint32_t height() const { return m_height; }
 
@@ -75,6 +89,8 @@ namespace LibGUI
 	private:
 		int m_server_fd;
 
+		Attributes m_attributes;
+
 		BAN::Vector<uint32_t> m_framebuffer;
 		uint32_t* m_framebuffer_smo;
 		uint32_t m_width;