/******************************************************************
 *
 *	CyberUPnP for Java
 *
 *	Copyright (C) Satoshi Konno 2002
 *
 *	File : SampleClockPane.java
 *
 ******************************************************************/

package clock;

import device.*;
import xmltypes.*;

import java.io.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;

import javax.swing.*;
import javax.imageio.ImageIO;

import org.cybergarage.util.*;

public class ClockPane extends JPanel
{
    private ClockDevice clockDev;
    private Color lastBlink = Color.BLACK;

    public ClockPane(ClockDevice clockDev)
    {
	this.clockDev = clockDev;
	loadImage();
	initPanel();
    }
    
    ////////////////////////////////////////////////
    //	Background
    ////////////////////////////////////////////////
    
    private final static String CLOCK_PANEL_IMAGE = "images/clock.jpg";
    
    private BufferedImage panelmage;
    
    private void loadImage()
    {
	File f = new File(CLOCK_PANEL_IMAGE);
	try {
	    panelmage = ImageIO.read(f);
	}
	catch (Exception e) {
	    Debug.warning(e);
	}
    }
    
    private BufferedImage getPaneImage()
    {
	return panelmage;
    }
    
    ////////////////////////////////////////////////
    //	Background
    ////////////////////////////////////////////////
    
    private void initPanel()
    {
	BufferedImage panelmage = getPaneImage();
	setPreferredSize(new Dimension(panelmage.getWidth(), panelmage.getHeight()));
    }
    
    ////////////////////////////////////////////////
    //	Font
    ////////////////////////////////////////////////
    
    private final static String DEFAULT_FONT_NAME = "Lucida Console";
    private final static int DEFAULT_TIME_FONT_SIZE = 48;
    private final static int DEFAULT_DATE_FONT_SIZE = 18;
    private final static int DEFAULT_SECOND_BLOCK_HEIGHT = 8;
    private final static int DEFAULT_SECOND_BLOCK_FONT_SIZE = 10;
    
    private Font timeFont = null;
    private Font dateFont = null;
    private Font secondFont = null;
    
    private Font getFont(Graphics g, int size)
    {
	Font font = new Font(DEFAULT_FONT_NAME, Font.PLAIN, size);
	if (font != null)
	    return font;
	return g.getFont();
    }
    
    private Font getTimeFont(Graphics g)
    {
	if (timeFont == null)
	    timeFont = getFont(g, DEFAULT_TIME_FONT_SIZE);
	return timeFont;
    }
    
    private Font getDateFont(Graphics g)
    {
	if (dateFont == null)
	    dateFont = getFont(g, DEFAULT_DATE_FONT_SIZE);
	return dateFont;
    }
    
    private Font getSecondFont(Graphics g)
    {
	if (secondFont == null)
	    secondFont = getFont(g, DEFAULT_SECOND_BLOCK_FONT_SIZE);
	return secondFont;
    }
    
    ////////////////////////////////////////////////
    //	paint
    ////////////////////////////////////////////////
    
    private void drawClockInfo(Graphics g)
    {
	int winWidth = getWidth();
	int winHeight = getHeight();
	
	if (clockDev.isValidTime()) {
	    g.setColor(Color.BLACK);
	} else {
	    if (lastBlink == Color.WHITE) {
		g.setColor(Color.BLACK);
		lastBlink = Color.BLACK;
	    } else {
		g.setColor(Color.WHITE);
		lastBlink = Color.WHITE;
	    }
	}
	
	//// Time String ////
	Time now = clockDev.getTime();
	String timeStr = now.toString();
	
	Font timeFont = getTimeFont(g);
	g.setFont(timeFont);
	
	FontMetrics timeFontMetric = g.getFontMetrics();
	Rectangle2D timeStrBounds = timeFontMetric.getStringBounds(timeStr, g);
	
	int timeStrWidth = (int)timeStrBounds.getWidth();		
	int timeStrHeight = (int)timeStrBounds.getHeight();
	int timeStrX = (winWidth-timeStrWidth)/2;
	int timeStrY = (winHeight+timeStrHeight)/2;
	int timeStrOffset = timeStrHeight/8/2;
	g.drawString(
		     timeStr,
		     timeStrX,
		     timeStrY);
	
	//// Date String ////
	
	String dateStr = "Time";
	
	Font dateFont = getDateFont(g);
	g.setFont(dateFont);
	
	FontMetrics dateFontMetric = g.getFontMetrics();
	Rectangle2D dateStrBounds = dateFontMetric.getStringBounds(dateStr, g);
	
	g.drawString(
		     dateStr,
		     (winWidth-(int)dateStrBounds.getWidth())/2,
		     timeStrY-timeStrHeight-timeStrOffset);
	

    }
    
    private void clear(Graphics g)
    {
	g.setColor(Color.GRAY);
	g.clearRect(0, 0, getWidth(), getHeight());
    }
    
    
    private void drawPanelImage(Graphics g)
    {
	g.drawImage(getPaneImage(), 0, 0, null);
    }
    
    public void paint(Graphics g)
    {
	clear(g);
	drawPanelImage(g);
	drawClockInfo(g);
    }
}