/**
* DotMatrix.java
*
* (c) Andrew Oakley, Enigma Software (enigma@zetnet.co.uk) 1996
* All Rights Reserved
* http://www.zetnet.co.uk/enigma/
*
* Last modified: 960728 0051
*
*/
import java.applet.*;
import java.awt.*;
import java.awt.image.*;
import java.util.*;
public class DotMatrix extends Applet implements Runnable {
String text; int size; int delay;
Color litColor, unlitColor;
int sx;
int x = 0;
Image all, letters;
Thread thread;
public void init() {
String tmp;
tmp = getParameter("text"); text = (tmp == null) ? "DOTMATRIX.JAVA" : tmp.toUpperCase();
tmp = getParameter("delay"); delay= (tmp == null) ? 100 : Integer.valueOf(tmp).intValue();
tmp = getParameter("size"); size = (tmp == null) ? 3 : Integer.valueOf(tmp).intValue();
try { tmp = getParameter("lit"); litColor = (tmp == null) ? Color.red : new Color(0xff << 26 | Integer.parseInt(tmp, 16)); }
catch (Exception e) { litColor = Color.red; }
try { tmp = getParameter("unlit"); unlitColor = (tmp == null) ? Color.black : new Color(0xff << 26 | Integer.parseInt(tmp, 16)); }
catch (Exception e) { unlitColor = Color.black; }
makeImage();
}
void makeImage() {
int[] pix;
sx = text.length() * size * 6;
all = createImage(sx + size().width, size().height);
Graphics g = all.getGraphics();
for (int i = 0; i < text.length(); i++) {
pix = getChar(text.charAt(i));
int count = 0;
for (int y = 0; y < 7; y++) {
for (int x = 0; x < 5; x++) {
if (pix[count++] == 0) g.setColor(unlitColor);
else g.setColor(litColor);
g.fillOval(i*6*size + x*size, y*size, size, size);
}
g.setColor(unlitColor);
g.fillOval(i*6*size + 5*size, y*size, size, size);
}
}
for (int i = text.length()*6*size; i < sx + size().width; i += 6*size) {
for (int y = 0; y < 7; y++) {
for (int x = 0; x < 6; x++) {
g.setColor(unlitColor);
g.fillOval(i + x*size, y*size, size, size);
}
}
}
}
int[] getChar(char c) {
int i = DotMatrixChar.chars.indexOf(c);
int[] result = new int[5 * 7];
if (i >= 0) result = ((DotMatrixChar)DotMatrixChar.charList.elementAt(i)).data;
else for (int j = 0; j < 5*7; j++) result[j] = 0;
return result;
}
public void start() {
thread = new Thread(this);
thread.start();
}
public void stop() {
thread.stop();
}
public void run() {
while (true) {
try {thread.sleep(delay);} catch (InterruptedException e){}
scrollLeft();
repaint();
}
}
public void paint(Graphics g) {
update(g);
}
public void update(Graphics g) {
g.drawImage(all, x, 0, this);
}
public void scrollLeft() {
if (x > -sx) x -= size;
else x = size().width;
}
public String getAppletInfo() {
return "DotMatrix v1.0\nWritten by Andrew Oakley (enigma@zetnet.co.uk) of Enigma Software\n\nhttp://www.zetnet.co.uk/users/enigma/";
}
public String[][] getParameterInfo() {
String[][] info = {
{"text", "text string", "text to actually display"},
{"delay", "integer", "number of ms to delay between redraws"},
{"lit", "hexadecimal color", "color of lit LEDs"},
{"unlit", "hexadecimal color", "color of unlit LEDs"}
};
return info;
}
}
class DotMatrixChar {
public int[] data = new int[5 * 7];
DotMatrixChar(String data) {
for (int i = 0; i < 5*7; i++) this.data[i] = (data.charAt(i) == 'o') ? 1 : 0;
}
static String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ().,!@-0123456789";
static Vector charList = new Vector(50, 10);
static {
charList.addElement(new DotMatrixChar( " o "+
" o o "+
"o o"+
"o o"+
"ooooo"+
"o o"+
"o o" ));
charList.addElement(new DotMatrixChar( "oooo "+
"o o"+
"o o"+
"oooo "+
"o o"+
"o o"+
"oooo " ));
charList.addElement(new DotMatrixChar( " oooo"+
"o "+
"o "+
"o "+
"o "+
"o "+
" oooo" ));
charList.addElement(new DotMatrixChar( "oooo "+
"o o"+
"o o"+
"o o"+
"o o"+
"o o"+
"oooo " ));
charList.addElement(new DotMatrixChar( "ooooo"+
"o "+
"o "+
"oooo "+
"o "+
"o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( "ooooo"+
"o "+
"o "+
"oooo "+
"o "+
"o "+
"o " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o "+
"o "+
"o oo"+
"o o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
"o o"+
"ooooo"+
"o o"+
"o o"+
"o o" ));
charList.addElement(new DotMatrixChar( "ooooo"+
" o "+
" o "+
" o "+
" o "+
" o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( "ooooo"+
" o "+
" o "+
" o "+
" o "+
"o o "+
" oo " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o "+
"o o "+
"oo "+
"o o "+
"o o "+
"o o" ));
charList.addElement(new DotMatrixChar( "o "+
"o "+
"o "+
"o "+
"o "+
"o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( "o o"+
"oo oo"+
"o o o"+
"o o o"+
"o o"+
"o o"+
"o o" ));
charList.addElement(new DotMatrixChar( "o o"+
"oo o"+
"o o o"+
"o o o"+
"o o o"+
"o oo"+
"o o" ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o o"+
"o o"+
"o o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "oooo "+
"o o"+
"o o"+
"oooo "+
"o "+
"o "+
"o " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o o"+
"o o"+
"o o o"+
"o oo"+
" oooo" ));
charList.addElement(new DotMatrixChar( "oooo "+
"o o"+
"o o"+
"oooo "+
"o o "+
"o o"+
"o o" ));
charList.addElement(new DotMatrixChar( " ooo "+
"o "+
"o "+
" ooo "+
" o"+
" o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "ooooo"+
" o "+
" o "+
" o "+
" o "+
" o "+
" o " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
"o o"+
"o o"+
"o o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
"o o"+
"o o"+
"o o"+
" o o "+
" o " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
"o o"+
"o o o"+
"o o o"+
"oo oo"+
"o o" ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
" o o "+
" o "+
" o o "+
"o o"+
"o o" ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
" o o "+
" o "+
" o "+
" o "+
" o " ));
charList.addElement(new DotMatrixChar( "ooooo"+
" o "+
" o "+
" o "+
" o "+
" o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( " o "+
" o "+
" o "+
" o "+
" o "+
" o "+
" o " ));
charList.addElement(new DotMatrixChar( " o "+
" o "+
" o "+
" o "+
" o "+
" o "+
" o " ));
charList.addElement(new DotMatrixChar( " "+
" "+
" "+
" "+
" "+
" oo "+
" oo " ));
charList.addElement(new DotMatrixChar( " "+
" "+
" "+
" "+
" "+
" oo "+
"oo " ));
charList.addElement(new DotMatrixChar( " oo "+
" oo "+
" oo "+
" oo "+
" "+
" oo "+
" oo " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o oo"+
"o o o"+
"o oo"+
"o "+
" oooo" ));
charList.addElement(new DotMatrixChar( " "+
" "+
" "+
"ooooo"+
" "+
" "+
" " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o oo"+
"o o o"+
"o o o"+
"o o o"+
"oo o"+
" ooo " ));
charList.addElement(new DotMatrixChar( " o "+
" oo "+
" o "+
" o "+
" o "+
" o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
" o "+
" o "+
" o "+
" o "+
"ooooo" ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
" o"+
" ooo "+
" o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "o o"+
"o o"+
"o o"+
" oooo"+
" o"+
" o"+
" o" ));
charList.addElement(new DotMatrixChar( "ooooo"+
"o "+
"o "+
"oooo "+
" o"+
" o"+
"oooo " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o "+
"oooo "+
"o o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( "ooooo"+
" o"+
" o "+
" o "+
" o "+
" o "+
"o " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o o"+
" ooo "+
"o o"+
"o o"+
" ooo " ));
charList.addElement(new DotMatrixChar( " ooo "+
"o o"+
"o o"+
" oooo"+
" o"+
"o o"+
" ooo " ));
}
}