why isn't my clock changing with time

Programming Questions

nanette.h..

why isn't my clock changing with time

in Programming Questions • 7 months ago

Hi
I'm trying to make a clock that shows real time, so it can work as a timer as well as trigger events. ( i want it for sunrise and sunset. I found some code here in the forum that helps as far as it creates the clock, but it doesn't refresh.
What am I doing wrong?
ps is the if statement right as a trigger (it's not accurate, but will be linked up to yahoo xml)?
thanks
nanette
here is the code:

import java.util.*;

Calendar calendar = new GregorianCalendar();
String am_pm;
int hour = calendar.get(Calendar.HOUR);
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);
// int framerate (60);

void setup() {
size (200, 200);
smooth();
background (255);
if (calendar.get(Calendar.AM_PM) == 0) {
    am_pm = "AM";
}
else {
    am_pm = "PM";
}
println("Current Time : " + hour + ":" + minute + ":" + second + " " + am_pm);
}

void draw () {
   background (255);
fill (0);
textAlign (CENTER);
textSize (20);
text ("Current Time : \n "+ hour + ":" + minute + ":" + second + " " + am_pm, width/2, height/2);

if (hour>6 && minute>= 53 && am_pm== "AM") {
    fill (0,255,255);
    rect (width/2, 10, 40, 40);
}
if (hour>6 && minute>= 13 && am_pm== "PM") {
    fill(255,255,255);
    rect (width/2, 10, 40, 40);

}

}

Replies(8)

calsign

Re: why isn't my clock changing with time

7 months ago

That's because you only get the current time once, and that's in the program's initialization phase. Try moving your variable assignments to within the draw() function. However, you're doing a lot more than you need to here. Processing provides functions for getting the current time that are a lot cleaner. Here's the same output, but revised, and using Processing's functions:

String am_pm;
int hour;
int minute;
int second;
void setup() {
size(200, 200);
smooth();
}
void draw () {
hour = hour(); //Get the current time
minute = minute();
second = second();
am_pm = (hour > 11 ? "PM" : "AM"); //It's PM if the hour is greater than 11 and AM otherwise
hour = hour % 12; //Wrap the hour around to conform with 12-hour time
if(hour == 0) hour = 12; //Make zero-o-clock twelve-o-clock
background (255);
fill (0);
textAlign (CENTER, BOTTOM);
textSize (20);
text ("Current Time:", width/2, height/2);
textAlign (CENTER, TOP);
text (hour + ":" + minute + ":" + second + " " + am_pm, width/2, height/2);
if (hour>6 && minute>= 53 && am_pm== "AM") {
fill (0, 255, 255);
rect (width/2, 10, 40, 40);
}
if (hour>6 && minute>= 13 && am_pm== "PM") {
fill(255, 255, 255);
rect (width/2, 10, 40, 40);
}
}

nanette.h..

Re: why isn't my clock changing with time

7 months ago

many thanks !

el_dippo

Re: why isn't my clock changing with time

7 months ago

You can also use SimpleDateFormat to get allot of date and time information.

Date dNow ;
SimpleDateFormat formatedTime = new SimpleDateFormat ("EEEE dd-MM-yyyy 'at' hh:mm a");
SimpleDateFormat formatedTimeext = new SimpleDateFormat ("EEEE dd-MM-yyyy 'at' hh:mm:ss a");
SimpleDateFormat daytimeMarker = new SimpleDateFormat ("a");
int sec;
void setup() {
size(350, 100);
sec = second();
dNow = new Date( );
}
void draw() {
if (second()!=sec) {
dNow = new Date( );
println("Current Date: " + formatedTimeext.format(dNow));
}
background (255);
fill (0);
textAlign (CENTER, BOTTOM);
textSize (20);
text ("Current Time:", width/2, height/2);
textAlign (CENTER, TOP);
text (formatedTime.format(dNow), width/2, height/2);
if (hour()>6 && minute()>= 53 && daytimeMarker.format(dNow)== "AM") {
fill (0, 255, 255);
rect (width/2, 10, 40, 40);
}
if (hour()>6 && minute()>= 13 && daytimeMarker.format(dNow)== "PM") {
fill(255, 255, 255);
rect (width/2, 10, 40, 40);
}
sec = second();
}

nanette.h..

Re: why isn't my clock changing with time

7 months ago

Thanks,
just one question where do I find the java.util library?
(is it under a different name in the library folder?)
I need it for
Date dNow ;-

cheers
nanette

GoToLoop

Re: why isn't my clock changing with time

7 months ago

Use -> import java.util.*

For more details, go here -> http://doc.java.sun.com/DocWeb/api/java.util

el_dippo

Re: why isn't my clock changing with time

7 months ago

I made a few small mistakes that makes my example a bit confusing. Here is the adjusted code:

import java.util.*;
Date dNow ;
SimpleDateFormat formatedTime = new SimpleDateFormat ("EEEE dd-MM-yyyy 'at' hh:mm a");
SimpleDateFormat formatedTimeext = new SimpleDateFormat ("EEEE dd-MM-yyyy 'at' hh:mm:ss a z");
SimpleDateFormat daytimeMarker = new SimpleDateFormat ("a");
int sec, backGround;
void setup() {
size(350, 100);
}
void draw() {
background(backGround);
if (sec != second()) {
dNow = new Date( );
println("Current Date: " + formatedTimeext.format(dNow));
sec = second();
}
textAlign (CENTER, BOTTOM);
textSize (20);
text ("Current Time:", width/2, height/2);
textAlign (CENTER, TOP);
text (formatedTime.format(dNow), width/2, height/2);
if ((hour()>18) && (minute()> 13) || (daytimeMarker.format(dNow)== "PM")) {
backGround = 0;
fill(255, 255, 255);
}
else {
backGround = 255;
fill (0);
}
}

I also have some other code that is not complete, but it works the other way around. So you tell (Java) Processing to do something when the time reaches a certain value. It's based on the work from Quark's GTimer. However, it can give a result you didn't expect. If you want it, then i can post it here. To give a small example, in your example code you have a few IF statements inside of DRAW, in my code, there is none.

nanetteh

Re: why isn't my clock changing with time

7 months ago

Hiya,
actually yes it would be great if you would like to share this. What I want is the sunrise to trigger an event ( change color and size and sunset to reverse this. So for this I will need both the current time and the time of event ( which I'll get from Yahoo)
cheers
nanette

el_dippo

Re: why isn't my clock changing with time

7 months ago

Hi,

Here is the code. It shows two buttons, one textfield and display's the time/date every 60 seconds in the console. I am still busy to put the buttons into the timer somehow. Also, there is a small bug with the buttons (trigger area not correct).
The program does not run (noLoop), except it runs when the mouse is moved in the canvas. If you don't move the mouse, the program still doing an action every 60 seconds.

/**
* class GTimer
* methods:
* setDelay(int time) @time in milliseconds
* setDelay(int time, time indicator) @time * @time indicator
-- @time indicator can be : millis, second, minute, hour
* setDelay(string time) @time can be 00:01:48 is 1 minute and 48 seconds
*
* start(int repeat) @repeat is the number of times the method will be called
* start() calls the method forever
*
* addRepeat(int repeats) @repeats adds to the amount of repeat
* isRunning() returns if the timer is running
* getInterval() returns the time left before the next repeat occures
* getDelay() returns the time between the next repeat
* getrepeats() returns the number of repeats left
* getinitialRepeats() returns the number of repeats before it started
* stop() ends the timer
*/
import java.util.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.Method;
import javax.swing.Timer;
import java.awt.datatransfer.DataFlavor;
import java.awt.Toolkit;
TextField textfield;
boolean cmd; // to check if ctrl key is pressed
button quitbutton, okbutton;
Object buttons;
GTimer timeTimer, textfieldTimer;
Date dNow ;
SimpleDateFormat ft = new SimpleDateFormat ("E dd-MM-yyyy 'at' hh:mm a");
int millis = 0;
int second = 1;
int minute = 2;
int hour = 3;
PFont font;
void setup() {
size(500, 300);
timeTimer = new GTimer(this, this, "timeDraw");
timeTimer.setDelay(60, second);
timeTimer.start();
textfield = new TextField(10, 100, 400, 24);
font = createFont("Arial", 12);
quitbutton = new button(150, 40, 30, "Quit" );
quitbutton.show();
okbutton = new button(250, 40, 30, "Ok" );
okbutton.show();
textfieldTimer = new GTimer(this, textfield, "display");
textfieldTimer.setDelay(250);
textfieldTimer.start();
noLoop();
}
void draw() {
}
void keyPressed() {
if (key!=CODED) {
if (!cmd) {
if ( key==BACKSPACE)
textfield.text = textfield.text.substring(0, max( 0, textfield.text.length()-1 ) );
else if (key==ENTER) {
println("process input : "+textfield.text);
textfield.text = "";
}
else textfield.text += key;
}
else {
if (key=='v') {
String url = getClipboard();
if (url.startsWith("http")) {
textfield.text = url;
}
else println("sorry no URL found in clipboard");
}
}
}
else
// 157 = COMMAND key
cmd = keyCode==157 ? true:false;
}
void keyReleased() {
if (key==CODED) cmd = false;
}
void mouseMoved() {
if (!quitbutton.mouseoverButton() && !okbutton.mouseoverButton()) {
cursor(ARROW);
}
else {
cursor(HAND);
redraw();
}
}
void mouseClicked() {
if (quitbutton.mouseoverButton() && mouseButton == LEFT) exit();
if (okbutton.mouseoverButton() && mouseButton == LEFT) println("Ok!");
}
class TextField {
String text = "";
float x, y, w, h;
TextField(float x, float y, float w, float h ) {
this.x = x;
this.y = y;
this.w = w;
this.h = h;
}
void display() {
pushMatrix();
translate( x, y );
fill(0);
rect( 0, 0, w, h ); //to clear
noStroke();
fill(255, 128);
rect( 1, 1, w, h ); //background color textfield
fill(255);
textAlign(LEFT, CENTER );
text( text, 2, h*.5 ); //the actual text
fill(255, millis()%3 * 96 );
rect(textWidth(text) + 2, 2, 12, h-4); //cursor
popMatrix();
textAlign(TOP, LEFT );
redraw();
}
}
String getClipboard() {
String s ="";
try {
s = (String)Toolkit.getDefaultToolkit().getSystemClipboard().getData(DataFlavor.stringFlavor);
return s;
}
catch(Exception e) {
}
return s;
}
void timeDraw() {
dNow = new Date( );
System.out.println("Current Date/time: " + ft.format(dNow));
}
class GTimer {
protected PApplet app;
protected Object eventHandlerObject = null;
protected Method eventHandler = null;
protected int nrepeats = -1;
protected int initialRepeats = 0;
protected Timer timer = null;
protected int delay = 0;
/**
* @param PApplet reference, is alway's : this
* @param obj the object that has the method to be executed,
* for example: this
* -- or -- GTimer (the methodName can be for example: stop )
* @param (string) methodName the name of the method to be called by the timer. ex. draw
*/
public GTimer(PApplet theApplet, Object obj, String methodName) {
app = theApplet;
try {
this.eventHandler = obj.getClass().getMethod(methodName, new Class[0] );
eventHandlerObject = obj;
}
catch (Exception e) {
eventHandlerObject = null;
System.out.println("The class " + obj.getClass().getSimpleName() + " does not have a method called " + methodName);
}
}
/**
* Start the timer (call the method forever)
*/
public void start() {
start( 0 );
}
/**
* Start the timer and call the method for the number of
* times indicated by nrepeats
* If nrepeats is <=0 then repeat forever
*
* @param nrepeater
*/
public void start(int nrepeater) {
this.nrepeats = nrepeater;
this.initialRepeats = nrepeater; // for timeline purpose
// If we have something to handle the event then create the Timer
if ( eventHandlerObject != null ) {
timer = new Timer(delay, new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (eventHandler != null) {
try {
eventHandler.invoke(eventHandlerObject, (Object[]) null);
if (nrepeats == Integer.MIN_VALUE) // to prevent overflow
nrepeats = 0;
if (--nrepeats == 0)
stop();
}
catch (Exception ex) {
System.out.println("Error in method : " + eventHandler.getName() + " ");
System.err.println(ex);
eventHandler = null;
eventHandlerObject = null;
} // end catch
} // end eventhandler check
} // closing void
} // closing timer actions
); // ending timer actions
} // end eventHandlerObject check
timer.start();
} // closing method
/**
* Stop the timer (can be restarted with start() method)
*/
public void stop() {
if (timer != null)
timer.stop();
}
/**
* Is the timer running?
* @return true if running
*/
public boolean isRunning() {
if (timer != null)
return timer.isRunning();
else
return false;
}
/**
* Get the interval time (milliseconds) between events.
* @return interval in millsecs or -1 if the timer failed to
* be created.
*/
public int getInterval() {
if (timer != null)
return timer.getDelay();
else
return -1;
}
public void setDelay(int delay) {
this.delay = delay;
if (timer != null) {
timer.stop();
start(nrepeats);
}
}
public void setDelay(int delay, int timeIndicator) {
switch (timeIndicator) {
case 1 :
this.delay = delay*1000;
break;
case 2 :
this.delay = delay*1000*60;
break;
case 3 :
this.delay = delay*1000*60*60;
break;
default :
this.delay = delay;
}
if (timer != null) {
timer.stop();
start(nrepeats);
}
}
public void setDelay(String delay) {
String[] list = split(delay, ':');
if (list.length >2) //hh:mm:ss
this.delay = Integer.parseInt(list[0])*3600000+Integer.parseInt(list[1])*60000+Integer.parseInt(list[2])*1000;
else
this.delay = Integer.parseInt(list[0])*60000+Integer.parseInt(list[1])*1000; //mm:ss
if (timer != null) {
timer.stop();
start(nrepeats);
}
}
int getDelay() {
return delay;
}
int getRepeats() {
return nrepeats;
}
int getinitialRepeats() {
return initialRepeats;
}
public void addRepeat(int nrepeats) {
if (timer != null) {
timer.stop();
start(this.nrepeats += nrepeats);
}
}
}
class button {
int x, y, tekstsize;
String tekst;
color text_col, hover_col;
button(int x, int y, int tekstsize, String tekst) {
this.x=x;
this.y=y;
this.tekstsize=tekstsize;
this.tekst=tekst;
this.text_col=color(0);
this.hover_col=color(128);
}
void show() {
textFont(font, tekstsize);
float tekstWidth=textWidth(tekst);
stroke(hover_col);
fill(text_col);
rect(x, y-(tekstsize), tekstWidth, tekstsize);
fill(hover_col);
text(tekst, x, y);
textFont(font);
}
String getTekst() {
return tekst;
}
int gettekstSize() {
return tekstsize;
}
int getX() {
return x;
}
int getY() {
return y;
}
boolean mouseoverButton() {
textFont(font, gettekstSize());
float tekstWidth=textWidth(getTekst());
if (mouseX < getX()+(tekstWidth) &&
mouseY < getY()+(gettekstSize()/4) &&
mouseX > getX() &&
mouseY > getY()-(tekstWidth/2)) {
stroke(this.text_col);
fill(this.hover_col);
rect(this.x, y-(tekstsize), tekstWidth, tekstsize);
fill(text_col);
text(tekst, x, y);
textFont(font);
return true;
}
else {
show();
return false;
}
}
}

Greetings, Dippo.

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