#ifndef VIEW_H

#define VIEW_H

#include <vector></vector>

#include <gtkmm drawingarea.h=""></gtkmm>

#include "common.h"

#include "surface.h"

#include "matrix.h"

class View: public Gtk::DrawingArea {

public:

	class Point: public Shared {

	public:

		Vector2 position;

		Color color;

		Real radius;

		bool selected;

		inline explicit Point(

			const Vector2 &position = Vector2(),

			const Color &color = Color(1, 1, 0, 1),

			Real radius = 5.0,

			bool selected = false

		):

			position(position),

			color(color),

			radius(radius),

			selected(selected)

		{ }

		virtual void draw(

			const Cairo::RefPtr<cairo::context>& context,</cairo::context>

			View &view );

	};

	typedef RefPtr<point> PointPtr;</point>

	typedef std::vector<pointptr> PointList;</pointptr>

public:

	Matrix transform;

	PointList points;

private:

	bool dragging;

	PointPtr selected_point;

	Vector2 selected_point_offset;

public:

	View();

	virtual ~View();

	sigc::signal<void, cairo::refptr<cairo::context="" const="">&> signal_draw_view;</void,>

	sigc::signal<void, const="" pointptr&=""> signal_point_motion;</void,>

	sigc::signal<void, const="" pointptr&=""> signal_point_changed;</void,>

	void point_motion(const PointPtr &point)

		{ signal_point_motion(point); }

	void point_changed(const PointPtr &point)

		{ point_motion(point); signal_point_changed(point); }

	Real get_pixel_size();

protected:

	bool on_draw(const Cairo::RefPtr<cairo::context>& context) override;</cairo::context>

	bool on_motion_notify_event(GdkEventMotion *event) override;

	bool on_button_press_event(GdkEventButton *event) override;

	bool on_button_release_event(GdkEventButton *event) override;

};

#endif