Window.h

#ifndef WINDOW_GUARD
#define WINDOW_GUARD 1

#include "fltk.h"

#include "std_lib_facilities.h"

#include "Point.h"
//#include "GUI.h"

namespace Graph_lib {

    class Shape;    // "forward declare" Shape
    class Widget;

    class Window : public Fl_Window {
    public:
        Window(int w, int h, const string& title);          // let the system pick the location
        Window(Point xy, int w, int h, const string& title);    // top left corner in xy
        virtual ~Window() { }

        int x_max() const { return w; }
        int y_max() const { return h; }

        void resize(int ww, int hh) { w = ww, h = hh; size(ww, hh); }

        void set_label(const string& s) { label(s.c_str()); }

        void attach(Shape& s);
        void attach(Widget& w);

        void detach(Shape& s);  // remove s from shapes
        void detach(Widget& w); // remove w from window (deactivate callbacks)

        void put_on_top(Shape& p);  // put p on top of other shapes

    protected:
        void draw();

    private:
        vector<Shape*> shapes;  // shapes attached to window
        int w, h;                   // window size

        void init();
    };

    int gui_main(); // invoke GUI library's main event loop

    inline int x_max() { return Fl::w(); }  // width of screen in pixels
    inline int y_max() { return Fl::h(); }  // height of screen in pixels

}
#endif