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billsClock
/*
* BillsClock.java - 27 Nov 1998 - Version 1.05
*(formerly javex.java)
*
* Copyright 1996-98 by Bill Giel
*
* E-mail: bgiel@ct2.nai.net
* WWW: http://www.nai.net/~rvdi/~bgiel/bill.htm
*
*
* Revision 1.01 - revised hms class to calculate GMT. This permits the clock
* 10 Feb 96 to be used to display the time at any location by supplying
* a TIMEZONE parameter in the HTML call.
*
* Revision 1.02 - revised timezone to accept real numbers, for places like
* 11 Feb 96 India, with a 5.5 hour time difference. I learn something
* new everyday!
*
* Revision 1.03 - fixed loop in run() to exit if clockThread==null, rather
* than simple for(;;)
*
* Revision 1.04 - renamed file and applet class to billsClock; added
* 12 Jun 96 parameter LOCALONLY for displaying viewer's local time
*
* Revision 1.05 - changed TZ algebraic sign to conform with astronomic convention
* 28 Nov 98
*
*
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
* without fee is hereby granted, provided that any use properly credits
* the author, i.e. "Bill's Clock courtesy of <A HREF="mailto:bgiel@ct2.nai.net">
* Moondog Software</A>.
*
*
* THE AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
* OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHOR SHALL NOT BE LIABLE
* FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
*/
import java.awt.*;
import java.applet.*;
import java.util.*;
import java.net.*;
class Hms extends Date
{
//Note that localOffset is hours difference from GMT
//west of Greenwich meridian is negative, east is positive.
//i.e. New York City (Eastern Standard Time) is -5
// Eastern Daylight Time is -4
public Hms(double localOffset){
super();
long tzOffset=getTimezoneOffset()*60L*1000L;
localOffset *= 3600000.0;
setTime(getTime() + tzOffset + (long)localOffset);
}
public Hms(){
super();
}
public double get_hours()
{
return (double)super.getHours()+(double)getMinutes()/60.0;
}
}
abstract class ClockHand
{
protected int baseX[], baseY[];
protected int transX[],transY[];
protected int numberOfPoints;
public ClockHand(int originX, int originY, int length,int thickness,int points){
baseX= new int[points]; baseY=new int[points];
transX= new int[points]; transY=new int[points];
initiallizePoints(originX,originY,length,thickness);
numberOfPoints=points;
}
abstract protected void initiallizePoints( int originX,
int originY,
int length,
int thickness);
abstract public void draw(Color color, double angle, Graphics g);
protected void transform(double angle)
{
for(int i=0;i<numberOfPoints;i++){
transX[i]=(int)( (baseX[0]-baseX[i]) * Math.cos(angle) -
(baseY[0]-baseY[i]) * Math.sin(angle) +
baseX[0]);
transY[i]=(int)( (baseX[0]-baseX[i]) * Math.sin(angle) +
(baseY[0]-baseY[i]) * Math.cos(angle) +
baseY[0]);
}
}
}
class SweepHand extends ClockHand
{
public SweepHand(int originX,int originY, int length, int points)
{
super(originX,originY,length,0,points);
}
protected void initiallizePoints(int originX,int originY, int length, int unused)
{
unused=unused; //We don't use the thickness parameter in this class
//This comes from habit to prevent compiler warning
//concerning unused arguments.
baseX[0]=originX; baseY[0]=originY;
baseX[1]=originX; baseY[1]=originY-length/5;
baseX[2]=originX; baseY[2]=originY+length;
}
public void draw(Color color, double angle, Graphics g)
{
transform(angle);
g.setColor(color);
g.drawLine(transX[1],transY[1],transX[2],transY[2]);
}
}
class HmHand extends ClockHand
{
public HmHand(int originX,int originY, int length,int thickness, int points){
super(originX,originY,length,thickness,points);
}
protected void initiallizePoints( int originX,
int originY,
int length,
int thickness)
{
baseX[0]=originX;
baseY[0]=originY;
baseX[1]=baseX[0]-thickness/2;
baseY[1]=baseY[0]+thickness/2;
baseX[2]=baseX[1];
baseY[2]=baseY[0]+length- thickness;
baseX[3]=baseX[0];
baseY[3]=baseY[0]+length;
baseX[4]=baseX[0]+thickness/2;
baseY[4]=baseY[2];
baseX[5]=baseX[4];
baseY[5]=baseY[1];
}
public void draw(Color color,double angle, Graphics g)
{
transform(angle);
g.setColor(color);
g.fillPolygon(transX,transY,numberOfPoints);
}
}
public class BillsClock extends Applet implements Runnable
{
//some DEFINE'd constants
static final int BACKGROUND=/old?u=http%3A%2F%2Fjavaboutique.webdeveloper.com%2FbillsClock%2F0&y=1999 //Background image index
static final int LOGO=1; //Logo image index
static final String JAVEX="J***X"; //Default text on clock face
static final double MINSEC=0.104719755; //Radians per minute or second
static final double HOUR=0.523598776; //Radians per hour
Thread clockThread = null;
//User options, see getParameterInfo(), below.
int width = 100;
int height = 100;
Color bgColor = new Color(0,0,0);
Color faceColor = new Color(0,0,0);
Color sweepColor = new Color(255,0,0);
Color minuteColor = new Color (192,192,192);
Color hourColor = new Color (255,255,255);
Color textColor = new Color (255,255,255);
Color caseColor = new Color (0,0,0);
Color trimColor = new Color (192,192,192);
String logoString=null;
Image images[] = new Image[2]; //Array to hold optional images
boolean isPainted=false; //Force painting on first update, if not painted
//Center point of clock
int x1,y1;
//Array of points for triangular icon at 12:00
int xPoints[]=new int[3], yPoints[]=new int[3];
//Class to hold time, with method to return (double)(hours + minutes/60)
Hms cur_time;
//The clock's seconds, minutes, and hours hands.
SweepHand sweep;
HmHand minuteHand,
hourHand;
//The last parameters used to draw the hands.
double lastHour;
int lastMinute,lastSecond;
//The font used for text and date.
Font font;
//Offscreen image and device context, for buffered output.
Image offScrImage;
Graphics offScrGC;
// Use to test background image, if any.
MediaTracker tracker;
int minDimension; // Ensure a round clock if applet is not square.
int originX; // Upper left corner of a square enclosing the clock
int originY; // with respect to applet area.
double tzDifference=0;
boolean localOnly=false;
//Users' parameters - self-explanatory?
public String[][] getParameterInfo()
{
String[][] info = {
{"width", "int", "width of the applet, in pixels"},
{"height", "int", "height of the applet, in pixels"},
{"bgColor", "string", "hex color triplet of the background, i.e. 000000 for black <black>"},
{"faceColor", "string", "hex color triplet of clock face, i.e. 000000 for black <black>"},
{"sweepColor", "string", "hex color triplet of seconds hand, i.e. FF0000 for red <red>"},
{"minuteColor", "string", "hex color triplet of minutes hand, i.e. C0C0C0 for lt.gray <lt.gray>"},
{"hourColor", "string", "hex color triplet of hours hand, i.e. FFFFFF for white <white>"},
{"textColor", "string", "hex color triplet of numbers, etc., i.e. FFFFFF for white <white>"},
{"caseColor", "string", "hex color triplet of case, i.e. 000000 for black <black>"},
{"trimColor", "string", "hex color triplet of case outliners, i.e. C0C0C0 for lt.gray <lt.gray>"},
{"bgImageURL", "string", "URL of background image, if any <null>"},
{"logoString", "string", "Name to display on watch face <JAVEX>"},
{"logoImageURL","string", "URL of logo image to display on watch face <null>"},
{"timezone", "real", "Timezone difference from GMT (decimal hours,- West/+ East)<0>"},
{"localonly", "int", "Non-zero will cause clock to display current local time <0>"}
};
return info;
}
//Applet name, author and info lines
public String getAppletInfo()
{
return "billsClock 1.05 (C) 1996-98 by Bill Giel<bgiel@ct2.nai.net>";
}
void showURLerror(Exception e)
{
String errorMsg = "JAVEX URL error: "+e;
showStatus(errorMsg);
System.err.println(errorMsg);
}
// This lets us create clocks of various sizes, but with the same
// proportions.
private int size(int percent)
{
return (int)((double)percent/100.0 * (double)minDimension);
}
public void init()
{
URL imagesURL[] = new URL[2];
String szImagesURL[] = new String[2];
tracker = new MediaTracker(this);
String paramString = getParameter( "WIDTH" );
if( paramString != null )
width = Integer.valueOf(paramString).intValue();
paramString = getParameter( "HEIGHT" );
if( paramString != null )
height = Integer.valueOf(paramString).intValue();
paramString = getParameter( "TIMEZONE" );
if( paramString != null )
tzDifference = Double.valueOf(paramString).doubleValue();
paramString = getParameter( "LOCALONLY" );
if( paramString != null && Integer.valueOf(paramString).intValue() != 0){
localOnly=true;
tzDifference=0.;
}
paramString = getParameter( "BGCOLOR");
if( paramString != null )
bgColor=parseColorString(paramString);
paramString = getParameter( "FACECOLOR");
if( paramString != null )
faceColor=parseColorString(paramString);
paramString = getParameter( "SWEEPCOLOR");
if( paramString != null )
sweepColor=parseColorString(paramString);
paramString = getParameter( "MINUTECOLOR");
if( paramString != null )
minuteColor=parseColorString(paramString);
paramString = getParameter( "HOURCOLOR");
if( paramString != null )
hourColor=parseColorString(paramString);
paramString = getParameter( "TEXTCOLOR");
if( paramString != null )
textColor=parseColorString(paramString);
paramString = getParameter( "CASECOLOR");
if( paramString != null )
caseColor=parseColorString(paramString);
paramString = getParameter( "TRIMCOLOR");
if( paramString != null )
trimColor=parseColorString(paramString);
logoString = getParameter( "LOGOSTRING");
if( logoString == null )
logoString=JAVEX;
else if(logoString.length() > 8)
logoString= logoString.substring(0,8); //Max 8 characters!
szImagesURL[BACKGROUND] = getParameter("BGIMAGEURL");
szImagesURL[LOGO] = getParameter("LOGOIMAGEURL");
for(int i=0; i<2; i++){
if(szImagesURL[i] != null){
try{
imagesURL[i]=new URL(getCodeBase(),szImagesURL[i]);
} catch (MalformedURLException e)
{
showURLerror(e);
imagesURL[i]=null;
images[i]=null;
}
if(imagesURL[i] != null){
showStatus("Javex loading image: " + imagesURL[i].toString());
images[i]=getImage(imagesURL[i]);
if(images[i] != null)
tracker.addImage(images[i],i);
showStatus("");
}
try{
tracker.waitForAll(i);
}catch (InterruptedException e){}
}
else images[i]=null;
}
cur_time=(localOnly)? new Hms() : new Hms(tzDifference);
lastHour=-1.0;
lastMinute=-1;
lastSecond=-1;
x1=width/2;
y1=height/2;
minDimension= Math.min(width, height);
originX=(width-minDimension)/2;
originY=(height-minDimension)/2;
xPoints[1]=x1-size(3); xPoints[2]=x1+size(3); xPoints[0]=x1;
yPoints[1]=y1-size(38);yPoints[2]=y1-size(38); yPoints[0]=y1-size(27);
sweep=new SweepHand(x1,y1,size(40),3);
minuteHand=new HmHand(x1,y1,size(40),size(6),6);
hourHand=new HmHand(x1,y1,size(25),size(8),6);
font=new Font("TXT",Font.BOLD,size(10));
offScrImage = createImage(width,height);
offScrGC = offScrImage.getGraphics();
System.out.println(getAppletInfo());
}
public void start()
{
if(clockThread == null){
clockThread = new Thread(this);
}
clockThread.start();
}
public void stop()
{
clockThread = null;
}
private void drawHands(Graphics g)
{
double angle;
int i,j;
int x,y;
angle=MINSEC * lastSecond;
sweep.draw(faceColor, angle, g);
if(cur_time.getMinutes() != lastMinute){
minuteHand.draw(faceColor,MINSEC*lastMinute,g);
if(cur_time.get_hours() != lastHour)
hourHand.draw(faceColor,HOUR*lastHour,g);
}
g.setColor(textColor);
g.fillRect(originX+size(12),y1-size(2),size(10),size(4));
g.fillRect(x1-size(2),originY + minDimension-size(22),size(4),size(10));
g.fillPolygon( xPoints, yPoints, 3);
for(i=1;i<12;i+=3)
for(j=i;j<i+2;j++){
x=(int)(x1+Math.sin(HOUR*j)*size(35));
y=(int)(y1-Math.cos(HOUR*j)*size(35));
g.fillOval(x-size(3),y-size(3),size(6),size(6));
}
//Set the font and get font info...
g.setFont(font);
FontMetrics fm=g.getFontMetrics();
//Paint our logo...
g.drawString(logoString,x1-fm.stringWidth(logoString)/2,y1-size(12));
//Get the day of the month...
String day=Integer.toString(cur_time.getDate(),10);
//Paint it...
g.drawString( day,
originX + minDimension-size(14)-fm.stringWidth(day),
y1+size(5));
//and put a box around it.
g.drawRect( originX + minDimension-size(14)-fm.stringWidth(day)-size(2),
y1-size(5)-size(2),
fm.stringWidth(day)+size(4),
size(10)+size(4));
if(images[LOGO] != null){
x = originX + (minDimension-images[LOGO].getWidth(this))/2;
y = y1 + (minDimension/2 - size(22) - images[LOGO].getHeight(this))/2;
if(x > 0 && y > 0)
offScrGC.drawImage(images[LOGO], x, y, this);
}
lastHour=cur_time.get_hours();
hourHand.draw(hourColor,HOUR*lastHour,g);
lastMinute=cur_time.getMinutes();
minuteHand.draw(minuteColor,MINSEC*lastMinute,g);
g.setColor(minuteColor);
g.fillOval(x1-size(4),y1-size(4),size(8),size(8));
g.setColor(sweepColor);
g.fillOval(x1-size(3),y1-size(3),size(6),size(6));
lastSecond=cur_time.getSeconds();
angle=MINSEC*lastSecond;
sweep.draw(sweepColor, angle,g);
g.setColor(trimColor);
g.fillOval(x1-size(1),y1-size(1),size(2),size(2));
}
private Color parseColorString(String colorString)
{
if(colorString.length()==6){
int R = Integer.valueOf(colorString.substring(0,2),16).intValue();
int G = Integer.valueOf(colorString.substring(2,4),16).intValue();
int B = Integer.valueOf(colorString.substring(4,6),16).intValue();
return new Color(R,G,B);
}
else return Color.lightGray;
}
public void run()
{
repaint();
while(null != clockThread){
cur_time= (localOnly)? new Hms() :new Hms(tzDifference);
repaint();
try{
Thread.sleep(500);
} catch (InterruptedException e) {}
}
}
public void paint(Graphics g)
{
int i,x0,y0,x2,y2;
if(images[BACKGROUND] == null){
offScrGC.setColor(bgColor);
offScrGC.fillRect(0,0,width,height);
}
else
offScrGC.drawImage(images[BACKGROUND], 0, 0, this);
offScrGC.setColor(caseColor);
//Shrink one pixel so we don't clip anything off...
offScrGC.fillOval( originX+1,
originY+1,
minDimension-2,
minDimension-2);
offScrGC.setColor(faceColor);
offScrGC.fillOval( originX + size(5),
originY + size(5),
minDimension - size(10),
minDimension - size(10));
offScrGC.setColor(trimColor);
offScrGC.drawOval( originX+1,
originY+1,
minDimension-2,
minDimension-2);
offScrGC.drawOval( originX + size(5),
originY + size(5),
minDimension - size(10),
minDimension - size(10));
offScrGC.setColor(textColor);
//Draw graduations, a longer index every fifth mark...
for(i=0;i<60;i++){
if(i==0 || (i>=5 && i%5 == 0)){
x0=(int)(x1+size(40)*Math.sin(MINSEC*i));
y0=(int)(y1+size(40)*Math.cos(MINSEC*i));
}
else{
x0=(int)(x1+size(42)*Math.sin(MINSEC*i));
y0=(int)(y1+size(42)*Math.cos(MINSEC*i));
}
x2=(int)(x1+size(44)*Math.sin(MINSEC*i));
y2=(int)(y1+size(44)*Math.cos(MINSEC*i));
offScrGC.drawLine(x0,y0,x2,y2);
}
drawHands(offScrGC);
g.drawImage(offScrImage,0,0,this);
isPainted=true;
}
public synchronized void update(Graphics g)
{
if(!isPainted)
paint(g);
else{
drawHands(offScrGC);
g.drawImage(offScrImage,0,0,this);
}
}
}
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