Lines_window.h

#include "GUI.h"
namespace Graph_lib {
	struct Lines_window : Window {
		Lines_window(Point xy, int w, int h, const string& title);
	private:
		//data:
		Open_polyline lines;
		//widgets:
		Button next_button;
		Button quit_button;
		In_box next_x;
		In_box next_y;
		Out_box xy_out;
		Menu color_menu;
		Button menu_button;

		void change(Color c) { lines.set_color(c); }
		void hide_menu() { color_menu.hide(); menu_button.show(); }

		//actions invoked bay callbacks:
		void red_pressed() { change(Color::red); hide_menu(); }
		void blue_pressed() { change(Color::blue); hide_menu(); }
		void black_pressed() { change(Color::black); hide_menu(); }
		void menu_pressed() { menu_button.hide(); color_menu.show(); }
		void next();
		void quit() { hide(); }

		//callback functions:
		static void cb_red(Address, Address);
		static void cb_blue(Address, Address);
		static void cb_black(Address, Address);
		static void cb_menu(Address, Address);
		static void cb_next(Address, Address);
		static void cb_quit(Address, Address);
	};
}