"Welcome!" applet
Other applets
You can see this applet in work on the top of my
homepage. Applet draws the computer
and shows the appearance of the specified text string on its display.
Typing text can be selected from the list; the animation can be paused.
You can use this applet source and change it free, but You must conserve the lines about the author.
Please, send me URL of Your page with applet to E-mail address
eremin@hotbot.com.
/* (C) Evgeny Eremin (Perm, Russia)
http://pages.hotbot.com/edu/eremin
You can use this applet source and change it free,
but You must conserve this lines about the author!
Add information about Your changes after these lines!
Please, send URL of Your page with applet to my E-mail
eremin@hotbot.com
*/
/* This applet draws the computer and shows the appearance
of the specified text string on its display.
Typing text can be selected from the list;
the animation can be paused.
*/
import java.applet.*;
import java.awt.*;
public class welcome extends java.applet.Applet implements Runnable{
String displayText="Welcome!"; String movie="";
Thread engine = null; int timeCounter=0; boolean animate=true;
int x0=7; int y0=5;
int Lmon=80; int Hmon=60; int Hsys=20;
Button pauseButton = new Button("Pause");
Choice texts = new Choice();
//Initialize the applet
public void init() {
setLayout(null); setBackground(Color.yellow);
add(pauseButton); pauseButton.reshape(140,10,50,25);
add(texts); texts.reshape(110,60,105,10);
texts.setFont(new Font("Arial",Font.BOLD,12));
texts.addItem("Welcome!");
texts.addItem("Be happy!");
texts.addItem("Have fun!");
texts.addItem("Nice Java.");
texts.addItem("E.A.Eremin");
texts.select(0);
//===== Tread that makes animation =====
//create tread
engine = new Thread(this); engine.start();
engine.suspend(); //pause in thread (see start after)
}
public void start(){
engine.resume(); //restart thread
}
public void run(){ //work of the thread - animation engine
while (true)
{
//add current letter or wait
if (animate) timeCounter++;
else timeCounter=3*displayText.length()-1; //no animation
if (timeCounter<=displayText.length())
movie=displayText.substring(0,timeCounter);
repaint(); //show picture changes
if (timeCounter>=3*displayText.length())
timeCounter=-1; //repeat again
//delay
try {engine.sleep(250);} catch(InterruptedException e) {}
}
}
public void stop(){
engine.suspend(); //pause the thread
}
public void destroy(){
if (engine != null) {engine.stop(); engine = null;}
}
//Get Applet information
public String getAppletInfo() {
return "E.A.Eremin: Welcome Applet";
}
public void update(Graphics g){
if (animate)
g.setColor(Color.green); //green indicator
else g.setColor(Color.red); //red indicator
g.fillRect(x0+7,y0+Hmon+9,4,2);
if ( (!animate) | (timeCounter>displayText.length()) )
return; //no animation and "all text is on screen" pause
//===== Screen text =====
if (timeCounter==0)
{g.setColor(Color.cyan);
g.fillRect(x0+5,y0+5,Lmon-9,Hmon-11);
} //clear screen
else
{g.setColor(Color.black);
g.setFont(new Font("Arial",Font.BOLD,12));
g.drawString(movie,x0+10,y0+32);
} //write text string
}
public void drawComp(Graphics g){
// ===== system unit =====
//system: front
g.setColor(Color.lightGray); g.fillRect(x0,y0+Hmon+3,Lmon,Hsys);
g.setColor(Color.black); g.drawRect(x0,y0+Hmon+3,Lmon,Hsys);
//shaddow
g.setColor(Color.white);
g.drawLine(x0+1,y0+Hmon+4,x0+Lmon-1,y0+Hmon+4);
g.drawLine(x0+1,y0+Hmon+4,x0+1,y0+Hmon+Hsys+2);
//indicator
g.setColor(Color.black); g.drawRect(x0+6,y0+Hmon+8,5,3);
g.setColor(Color.green); //green indicator
g.fillRect(x0+7,y0+Hmon+9,4,2);
//2 floppy
int xl=x0+Lmon-25; int y1=y0+Hmon+9;
for (int k=1; k<3; k++)
{g.setColor(Color.darkGray); g.fillRect(xl,y1,21,4);
g.setColor(Color.white); g.fillRect(xl,y1,20,3);
y1+=6;}
//system: sides
g.setColor(Color.black);
g.drawLine(x0+Lmon+1,y0+Hmon+Hsys+3,x0+Lmon+10,y0+Hmon+Hsys-6);
g.drawLine(x0,y0+Hmon+3,x0+9,y0+Hmon-6);
g.drawLine(x0+Lmon+11,y0+Hmon-5,x0+Lmon+11,y0+Hmon+Hsys-7);
g.setColor(Color.white);
g.drawLine(x0+Lmon+1,y0+Hmon+3,x0+Lmon+10,y0+Hmon-6);
//system: top
g.setColor(Color.darkGray);
for (int i2=1; i2<11; i2++)
g.drawLine(x0+1+i2,y0+Hmon+3-i2,x0+Lmon+i2,y0+Hmon+3-i2);
//system: right
g.setColor(Color.darkGray);
for (int i3=1; i3<11; i3++)
g.drawLine(x0+Lmon+i3,y0+Hmon+5-i3,x0+Lmon+i3,y0+Hmon+Hsys+3-i3);
// ===== monitor =====
//monitor: front
g.setColor(Color.lightGray); g.fillRect(x0,y0,Lmon,Hmon);
g.setColor(Color.black); g.drawRect(x0,y0,Lmon,Hmon);
//shaddow
g.setColor(Color.white);
g.drawLine(x0+1,y0+1,x0+Lmon-1,y0+1);
g.drawLine(x0+1,y0+1,x0+1,y0+Hmon-1);
//monitor: screen
g.setColor(Color.black); g.drawRect(x0+4,y0+4,Lmon-8,Hmon-10);
g.setColor(Color.cyan); g.fillRect(x0+5,y0+5,Lmon-9,Hmon-11);
//shaddow
g.setColor(Color.white);
g.drawLine(x0+Lmon-3,y0+4,x0+Lmon-3,y0+Hmon-5);
g.drawLine(x0+4,y0+Hmon-5,x0+Lmon-4,y0+Hmon-5);
//monitor: sides
g.setColor(Color.black);
g.drawLine(x0+Lmon+1,y0,x0+Lmon+10,y0+9);
g.drawLine(x0+Lmon+1,y0+Hmon,x0+Lmon+10,y0+Hmon-9);
g.drawLine(x0+Lmon+10,y0+9,x0+Lmon+10,y0+Hmon-9);
g.setColor(Color.darkGray);
for (int i1=1; i1<10; i1++)
g.drawLine(x0+Lmon+i1,y0+i1,x0+Lmon+i1,y0+Hmon-i1);
}
public void paint(Graphics g){
int h=size().height; int w=size().width;
g.setColor(Color.red);
g.drawRect(0,0,w-1,h-1); g.drawRect(1,1,w-3,h-3); //frame
//separate button
int xb=105; g.drawLine(xb,0,xb,h); g.drawLine(xb+1,0,xb+1,h);
g.setColor(Color.blue); g.setFont(new Font("Arial",Font.BOLD,12));
g.drawString("Select text:",110,55);
drawComp(g);
update(g);
showStatus("Welcome to my homepage!");
}
//Controls
public boolean action(Event e, Object o) {
if (e.target instanceof Button)
animate=!animate; //change to opposite
if (e.target instanceof Choice)
{displayText=texts.getSelectedItem();
timeCounter=-1; //start new string from the beginning
}
return(true);
}
}
