package myclock;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class Display {
	private String title;
	private int size;
	private static JFrame frame;

	// Current clock time
	private static int hours = 0, minutes = 0;


	public Display(String title,int size) {
		this.title=title;
		this.size=size;
		createDisplay();
	}

	public void createDisplay() {
		// Create a JFrame where we will put our clock
		frame = new JFrame(title);

		// Set up the frame
		frame.setSize(size, size);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setResizable(false);

		// Add a Component object inside the frame. This Component object
		// is responsible for drawing shapes and it does so by overriding
		// the paint method of the Component class. See PaintComponent
		// definition below
		frame.add(new PaintComponent());

		frame.setVisible(true);

	}

	public void setTime(int hours, int minutes) {
		this.hours = hours;
		this.minutes = minutes;

		// Let the system know we have to redraw. This will call
		// PaintComponent.paint() which will call drawClock()
		// which will use the updated hours and minutes values to redraw
		// the clock
		frame.repaint();
	}

	/*
	 * drawClock
	 *
	 * 		Helper function to draw the clock and its hands
	 *
	 * Arguments:
	 * 		g2D:	Graphics2D object to use when drawing
	 */
	private static void drawClock(Graphics2D g2D) {
		// This is a test line to show you this is working. Still need to draw
		// a clock instead
		g2D.drawString(String.valueOf(hours) + ":" + String.valueOf(minutes),
				100, 100);

		// TODO: Draw clock face
		// e.g g2D.drawOval(0, 0, 300, 300);


		// TODO: Draw clock hands
		// Use the hours and minutes variable to determine
		// what the current time is.

	}

	static class PaintComponent extends JComponent {


		// This callback function is called every time the system feels the
		// need to paint the component (window resized, previously obscured
		// area now visible etc.). It helps to think of it this way: the
		// function clears up the Component and draws whatever is written below
		@Override
		public void paint(Graphics g) {
			// g is a Graphics type but Graphics doesn't support drawing
			// shapes so we cast it to Graphics2D
			Graphics2D g2d = (Graphics2D) g;
			g2d.setColor(Color.BLACK);
			drawClock(g2d);

		}

	}
}