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Chris Baty

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Recent posts by Chris Baty

Parsing Nested XML Nodes

Okay, I figured it out, with help from Eclipse. Problem #1: <followers> are a sibling, not a child. Problem #2: I was confusing nodelist items with element items. Here's the answer:

private static void parseFollowerXmlFile(String xFile){
WordFollowers myFr;
Word myWd;
try {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse (new File(xFile));
// normalize text representation
doc.getDocumentElement ().normalize ();
NodeList flList = doc.getElementsByTagName("followerSet");
for(int s=0; s<flList.getLength() ; s++){
Node firstWordNode = flList.item(s);
if(firstWordNode.getNodeType() == Node.ELEMENT_NODE){
Element firstWordElement = (Element)firstWordNode;
myFr = new WordFollowers();
//-------
NodeList firstWordList = firstWordElement.getElementsByTagName("word");
Element firstWDElement = (Element)firstWordList.item(0);
NodeList textWDList = firstWDElement.getChildNodes();
myFr.setWord(((Node)textWDList.item(0)).getNodeValue().trim());
//-------
NodeList fList = firstWordElement.getElementsByTagName("follower");
for(int i=0; i><fList.getLength() ; i++){
Node firstFLNode = fList.item(i);
if(firstFLNode.getNodeType() == Node.ELEMENT_NODE){
Element firstWdElement = (Element)firstWordNode;
myWd = new Word();
//-------
NodeList firstWdList = firstWdElement.getElementsByTagName("follower");
Element firstWd1Element = (Element)firstWdList.item(i);
NodeList textWdList = firstWd1Element.getChildNodes();
myFr.setWord(((Node)textWDList.item(0)).getNodeValue().trim());
//-------
NodeList countList = firstWordElement.getElementsByTagName("count");
Element countElement = (Element)countList.item(i);
NodeList textCTList = countElement.getChildNodes();
int ct = Integer.parseInt(((Node)textCTList.item(0)).getNodeValue().trim());
myWd.setCount(ct);
//myFr.addFollower(myWd);
}
}
followers.add(myFr);
System.out.println();
}//end of if clause
}//end of for loop with s var
}catch (SAXParseException err) {
System.out.println ("** Parsing error" + ", line "
+ err.getLineNumber () + ", uri " + err.getSystemId ());
System.out.println(" " + err.getMessage ());
}catch (SAXException e) {
Exception x = e.getException ();
((x == null) ? e : x).printStackTrace ();
}catch (Throwable t) {
t.printStackTrace ();
}
}

Hope this helps someone else
Chris>

14 years ago

XML and Related Technologies

Parsing Nested XML Nodes

Hi guys,
I'm trying to parse a simple (to me) XML document with nested nodes that looks like this:

So I wrote a method to parse this file and it works except the number of <followers> is always 5 and the count is always 1.

private static void parseFollowerXmlFile(String xFile){
try {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse (new File(xFile));
// normalize text representation
doc.getDocumentElement ().normalize ();
System.out.println ("Root element of the doc is " + doc.getDocumentElement().getNodeName());
NodeList flList = doc.getElementsByTagName("followerSet");
int totalWords = flList.getLength();
System.out.println("Total no of words with followers : " + totalWords);
for(int s=0; s<flList.getLength() ; s++){
Node firstWordNode = flList.item(s);
if(firstWordNode.getNodeType() == Node.ELEMENT_NODE){
Element firstWordElement = (Element)firstWordNode;
//-------
NodeList firstWordList = firstWordElement.getElementsByTagName("word");
Element firstWDElement = (Element)firstWordList.item(0);
NodeList textWDList = firstWDElement.getChildNodes();
System.out.println("Word : " + ((Node)textWDList.item(0)).getNodeValue().trim());
//-------
NodeList fList = flList.item(s).getChildNodes();
//NodeList fList = doc.getElementsByTagName("followers");
int totalFols = fList.getLength();
System.out.println("Total no of words with followers : " + totalFols);
for(int i=0; i><fList.getLength() ; i++){
Node firstFLNode = fList.item(i);
if(firstWordNode.getNodeType() == Node.ELEMENT_NODE){
Element firstWdElement = (Element)firstWordNode;
//-------
NodeList firstWdList = firstWdElement.getElementsByTagName("follower");
Element firstWd1Element = (Element)firstWdList.item(0);
NodeList textWdList = firstWd1Element.getChildNodes();
System.out.println("Word follower: " + ((Node)textWdList.item(0)).getNodeValue().trim());
//-------
NodeList countList = firstWordElement.getElementsByTagName("count");
Element countElement = (Element)countList.item(0);
NodeList textCTList = countElement.getChildNodes();
System.out.println("Follower Count : " + textCTList.item(0).getNodeValue());
System.out.println("Count : " + Integer.parseInt((((Node)textCTList.item(0)).getNodeValue())));
}
}
}//end of if clause
}//end of for loop with s var
}catch (SAXParseException err) {
System.out.println ("** Parsing error" + ", line "
+ err.getLineNumber () + ", uri " + err.getSystemId ());
System.out.println(" " + err.getMessage ());
}catch (SAXException e) {
Exception x = e.getException ();
((x == null) ? e : x).printStackTrace ();
}catch (Throwable t) {
t.printStackTrace ();
}
}

Any ideas would be appreciated.

Thanks.
Chris>

14 years ago

XML and Related Technologies

Differences between Running in Applets Eclipse and Browsers?

Hi guys,
I'm working on a JAVA application that can also run as an Applet. The applet reads a text/asci file than makes adjustments based on that read. The Applet runs as expected in Eclipse but when I open the html page containing the Applet it doesn't appear to read the file. I put the text file in the same directory as the Applet:

The security policy file is:

I thought that the browser might be caching the Applet but clearing the cache didn't help.

Any thoughts would be appreciated.

Thanks.

Chris

14 years ago

Nested Layout Managers?

Hi guys,
I'm working on a keyboard layout for people with special needs so I created my own lay manager:

package com.cripcloud.com;
import java.awt.Point;
import java.lang.Math;
public class HexPoints {
public Point axRt;
public Point upRt;
public Point upLt;
public Point axLt;
public Point dnLt;
public Point dnRt;
public Point getAxRt() {
return axRt;
}
public void setAxRt(Point axRt) {
this.axRt = axRt;
}
public Point getUpRt() {
return upRt;
}
public void setUpRt(Point upRt) {
this.upRt = upRt;
}
public Point getUpLt() {
return upLt;
}
public void setUpLt(Point upLt) {
this.upLt = upLt;
}
public Point getAxLt() {
return axLt;
}
public void setAxLt(Point axLt) {
this.axLt = axLt;
}
public Point getDnLt() {
return dnLt;
}
public void setDnLt(Point dnLt) {
this.dnLt = dnLt;
}
public Point getDnRt() {
return dnRt;
}
public void setDnRt(Point dnRt) {
this.dnRt = dnRt;
}
public HexPoints() {
}
public HexPoints(Point center, int s) {
axRt = new Point((int)center.x + s, center.y);
upRt = new Point((int)(center.x + s / 2), (int)(center.y - s * Math.sqrt(3) / 2));
upLt = new Point((int)(center.x - s / 2), (int)(center.y - s * Math.sqrt(3) / 2));
axLt = new Point(center.x - s, center.y);
dnRt = new Point((int)(center.x + s / 2), (int)(center.y + s * Math.sqrt(3) / 2));
dnLt = new Point((int)(center.x - s / 2), (int)(center.y + s * Math.sqrt(3) / 2));
}
public int getHeight(int s) {
return (int) (s * Math.sqrt(3));
}
public int getWidth(int s) {
return s * 2;
}
}

This Works.

import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Polygon;
import javax.swing.JButton;
/* This class draws a perfect hexagon shaped button.
* different colors are added for rollover function.
* Buttons are intended for a virtual keyboard.
*/
public class HexButton extends JButton {
private static final long serialVersionUID = 1L;
private Color outerColor = Color.gray;
private Color defaultColor = Color.gray;
private Color innerColor = Color.yellow;
private Color textColor = Color.BLACK;
boolean gotFontSize = false;
int fontSize = 12;
private int side = 20;
// Buttons are intended for a virtual keyboard
// so only one char per key.
private char key;
private String title;
private int xFontOffset;
private int yFontOffset;
public int getSide() {
return side;
}
public void setSide(int si) {
side = si;
}
public HexButton(char label) {
key = label;
title = ""+label;
}
public HexButton() {
}
//@Override
protected void paintComponent(Graphics g) {
Dimension originalSize = getPreferredSize();
int x = originalSize.width;
side = x / 2;
int y = (int) ( side * Math.sqrt(3));
originalSize.setSize(new Dimension(x,y));
// Form outer shape
HexPoints hp = new HexPoints(new Point(x/2,y/2),side);
Polygon thisHex = new Polygon();
thisHex.addPoint(hp.getAxRt().x,hp.getAxRt().y);
thisHex.addPoint(hp.getUpRt().x,hp.getUpRt().y);
thisHex.addPoint(hp.getUpLt().x,hp.getUpLt().y);
thisHex.addPoint(hp.getAxLt().x,hp.getAxLt().y);
thisHex.addPoint(hp.getDnLt().x,hp.getDnLt().y);
thisHex.addPoint(hp.getDnRt().x,hp.getDnRt().y);
g.setColor(outerColor);
g.drawPolygon(thisHex);
g.fillPolygon(thisHex);
// Form outer shape
hp = new HexPoints(new Point(x/2,y/2),side-4);
thisHex.addPoint(hp.getAxRt().x,hp.getAxRt().y);
thisHex.addPoint(hp.getUpRt().x,hp.getUpRt().y);
thisHex.addPoint(hp.getUpLt().x,hp.getUpLt().y);
thisHex.addPoint(hp.getAxLt().x,hp.getAxLt().y);
thisHex.addPoint(hp.getDnLt().x,hp.getDnLt().y);
thisHex.addPoint(hp.getDnRt().x,hp.getDnRt().y);
g.setColor(innerColor);
g.drawPolygon(thisHex);
g.fillPolygon(thisHex);
// Size font to key
g.setColor(textColor);
Font f = new Font("Dialog", Font.BOLD, fontSize);
FontMetrics fm = g.getFontMetrics(f);
if ( !gotFontSize ) {
while ( fm.getHeight() <= (x * .75) ){
f = new Font("Dialog", Font.BOLD, fontSize++);
fm = g.getFontMetrics(f);
}
gotFontSize = true;
xFontOffset = x/2 - side/2;
yFontOffset = y/2 + side/2;
}
g.setFont(f);
g.drawString(""+key, xFontOffset, yFontOffset);
}
//@Override
public Dimension getPreferredSize() {
// Dimension encloses hexagon
return new Dimension( 2 * side, (int) (side * Math.sqrt(3)));
}
public char getKey() {
// TODO Auto-generated method stub
return key;
}
public String getString() {
// TODO Auto-generated method stub
return title;
}
public void setOuterColor(Color change) {
this.outerColor = change;
}
}

This works okay on macs especially. Here's my layoutmanager:

import java.awt.Component;
import java.awt.Container;
import java.awt.Point;
import java.awt.Dimension;
import java.awt.LayoutManager2;
import java.awt.Rectangle;
import java.util.ArrayList;
/* This layout manager arranges hexagonally-shaped buttons into
* a honeycomb-like configuration. The buttons are placed the
* keyboard from the center out, using quasi-radial coordinates.
* So key(0,0) would be the center and key(2,3) would be the
* forth key in the third radius, 0 being the key closest
* to 3 o'clock.
*/
public class HoneycombLayout implements LayoutManager2 {
// Length of hexagon side
public int side = 10;
public static ArrayList<Point> keys;
public static Point center;
private static int maxR = 12;
private int preferredWidth = 2 * side, preferredHeight = (int) (side * Math.sqrt(3));
public HoneycombLayout() {
}
// Find nexxt key available
public Point findKey(){
for ( int i=0; i<=maxR; i++)
for ( int j=0; j<6*i; j++)
if ( gotKey(i,j) )
continue;
else
return new Point(i,j);
return null;
}
// Is key already being used
public boolean gotKey(int r, int ang) {
if ( keys != null )
for ( int i=1; i<keys.size(); i++)
if (keys.get(i).equals(new Point(r,ang)) )
return true;
return false;
}
/* Required by LayoutManager. */
public void addLayoutComponent(Component comp, int radius, int angle) {
// int n = keys.size()+1;
Dimension compPS = null;
if ( !gotKey(radius,angle)) {
Point thisPoint = new Point(radius,angle);
int x;
int y;
compPS = comp.getPreferredSize();
x = thisPoint.x;
y = thisPoint.y;
int w = compPS.width;
int h = compPS.height;
comp.setBounds(x, y, w, h);
}
}
// removes key from arraylist
private void delKey(Point thisPoint) {
for ( int i=1; i<keys.size(); i++)
if ( keys.get(i).equals(thisPoint) )
keys.remove(i);
}
@SuppressWarnings("null")
public Point findComponent(Component comp, Rectangle rIn) {
Dimension compPS = null;
Component testC = null;
Point testP;
int x;
int y;
System.out.println("rIn is " + rIn );
System.out.println("comp is " + comp.getX() );
compPS = comp.getPreferredSize();
int w = compPS.width;
int h = compPS.height;
for ( int i=0; i<maxR; i++)
for ( int j=0; j<i*6; j++){
testP = getPoint(center,i,j);
x = testP.x;
y = testP.y;
testC.setBounds(x, y, w, h);
if ( rIn.equals(testC.getBounds()) )
return testP;
}
return null;
}
/* Required by LayoutManager. */
public void addLayoutComponent(String name, Component comp) {
Dimension compPS = null;
Point thisPoint = findKey();
int x;
int y;
compPS = comp.getPreferredSize();
x = thisPoint.x;
y = thisPoint.y;
int w = compPS.width;
int h = compPS.height;
comp.setBounds(x, y, w, h);
}
/* Required by LayoutManager. */
public void removeLayoutComponent(Component comp) {
Point pIn = new Point(comp.getBounds().x, comp.getBounds().y);
//Point thisPoint = findComponent(comp,rIn);
delKey(pIn);
comp.repaint();
//comp.setBounds(0, 0, 0, 0);
}
public int getSide() {
return side;
}
// Can't reset set without resetting length and width
public void setSide(int side) {
this.side = side;
preferredWidth = 2 * side;
preferredHeight = (int) (side * Math.sqrt(3));
}
/* Required by LayoutManager. */
public Dimension preferredLayoutSize(Container target) {
return target.getSize();
}
/**
* Returns minimum size based on side length
*/
public Dimension minimumLayoutSize(Container target) {
return new Dimension(this.preferredWidth,this.preferredHeight);
}
public void layoutContainer(Container parent) {
center = new Point((int)parent.getWidth()/2,(int)parent.getHeight()/2);
keys = new ArrayList<Point>();
Point thisPoint;
int x, y, w, h;
int n = parent.getComponentCount();
Component comp = null;
Dimension compPS = null;
if (n == 1) {
comp = parent.getComponent(0);
x = center.x;
y = center.y;
compPS = comp.getPreferredSize();
w = compPS.width;
h = compPS.height;
comp.setBounds(x, y, w, h);
} else {
int ang = 0;
int angLimit = 0;
int rad = 0;
for (int i = 0; i < n; i++) {
comp = parent.getComponent(i);
compPS = comp.getPreferredSize();
if ( rad == 0 ) {
thisPoint = new Point((int) center.getX(), center.y);
rad = 1;
ang = 0;
angLimit = 6;
} else if ( (ang+1) == angLimit ) {
thisPoint = getPoint(center, rad, ang);
ang = 0;
rad++;
angLimit = rad * 6;
} else {
thisPoint = getPoint(center, rad, ang);
ang++;
} // end if
keys.add(thisPoint);
x = thisPoint.x;
y = thisPoint.y;
w = compPS.width;
h = compPS.height;
comp.setBounds(x, y, w, h);
} // for
}
}
/*
* This method determines the exact location of the center of
* a key, based on radius and quasi-angle. It calculates the
* point closest to 3 o'clock and marches around the hexagon
* until it ends on the angIn and returns that point.
*/
public Point getPoint(Point center, int radius, int angIn) {
Point thePt;
int start = radius / 2;
int slice = radius * 6;
if ( radius == 0 ) // radius is 0
thePt = new Point(center.x, center.y);
else if ( (radius % 2) == 0) { // Even radius
thePt = new Point((center.x + (radius-1 )*3*side), center.y);
if (angIn == 0)
return thePt;
} else { // Odd radius
thePt = new Point((int)(center.x+radius*3*side/2), (int)(center.y - side * Math.sqrt(3)/2));
if (angIn == 0)
return thePt;
}
//printPoint("thePt in is ", thePt);
int turn1 = start;
int turn2 = turn1 + radius;
int turn3 = turn2 + radius;
int turn4 = turn3 + radius;
int turn5 = turn4 + radius;
int turn6 = turn5 + radius;
for (int i = 1; i <= angIn; i++){
if ( i <= turn1)
thePt.setLocation(thePt.x, (int)(thePt.y-Math.sqrt(3)*side));
else if ( ( i > turn1) && ( i <= turn2) )
thePt.setLocation(thePt.x-3*side/2 , (int)(thePt.y-Math.sqrt(3)*side/2));
else if ( ( i > turn2) && ( i <= turn3) )
thePt.setLocation(thePt.x-3*side/2 , (int)(thePt.y+Math.sqrt(3)*side/2));
else if ( ( i > turn3) && ( i <= turn4) )
thePt.setLocation(thePt.x , (int)(thePt.y+Math.sqrt(3)*side));
else if ( ( i > turn4) && ( i <= turn5) )
thePt.setLocation(thePt.x+3*side/2 , (int)(thePt.y+Math.sqrt(3)*side/2));
else if ( ( i > turn5) && ( i <= turn6) )
thePt.setLocation(thePt.x+3*side/2 , (int)(thePt.y-Math.sqrt(3)*side/2));
else if ( ( i > turn6) && ( i <= slice) )
thePt.setLocation(thePt.x , (int)(thePt.y-Math.sqrt(3)*side));
}
//printPoint("thePt out is ", thePt);
return thePt;
}
private void printPoint(String s, Point p){
System.out.println(s + "Point is x="+p.x+", y="+p.y);
}
/**
* Returns a String representation of this CircleLayout.
*
* @return A String that represents this CircleLayout
*/
public String toString() {
return this.getClass().getName();
}
@Override
public void addLayoutComponent(Component arg0, Object arg1) {
// TODO Auto-generated method stub
}
@Override
public float getLayoutAlignmentX(Container arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public float getLayoutAlignmentY(Container arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public void invalidateLayout(Container arg0) {
// TODO Auto-generated method stub
}
@Override
public Dimension maximumLayoutSize(Container arg0) {
// TODO Auto-generated method stub
return null;
}
}

This has issues but works. Here's my tester:

import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Collections;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
public class KeyTest2 extends JFrame {
JPanel keyboard;
JTextArea text;
private static char predecessor;
private static String bigString = "";
GridBagConstraints manCons, cons;
public static char[] keys = {'A','B','C','D','E',' ','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z', '1', '2', '3','4','5','6','7','8','9','0', '/',',','.',';','c','/','`','t','r',(char)24};
private static HoneycombLayout hl = new HoneycombLayout();
private static ChPar[] myChars = new ChPar[keys.length];
private static boolean gotFollower = false;
static ChPar[][] cFollowers = new ChPar[keys.length][keys.length];
public static char[] newKeys = new char[keys.length];
public KeyTest2() {
super("test");
//setLayout(new GridLayout(2,0));
GridBagLayout mainGB = new GridBagLayout();
manCons = new GridBagConstraints();
setLayout(mainGB);
text = new JTextArea(20,80);
buildGridBagConstraints(manCons, 0, 0, 1, 1, 100, 30);
manCons.fill = GridBagConstraints.CENTER;
mainGB.setConstraints(text, manCons);
add(text);
keyboard = new JPanel(hl);
hl.setSide(40);
char key;
for (int i=0; i<newKeys.length; i++){
final HexButton hb = new HexButton(newKeys[i]);
hb.setSide(39);
hb.addMouseListener(new MouseAction());
hl.addLayoutComponent(hb,i,0);
keyboard.add(hb);
}
buildGridBagConstraints(manCons, 0, 1, 1, 1, 0, 70);
manCons.fill = GridBagConstraints.CENTER;
mainGB.setConstraints(keyboard, manCons);
add(keyboard);
}
public void buildGridBagConstraints(GridBagConstraints myGBC, int gx, int gy, int gw, int gh, int wx, int wy) {
manCons.gridx = gx;
manCons.gridy = gy;
manCons.gridwidth = gw;
manCons.gridheight = gh;
manCons.weightx = wx;
manCons.weighty = wy;
}
public void redrawKeys() {
hl.setSide(40);
char key;
for (int i=0; i<newKeys.length; i++){
final HexButton hb = new HexButton(newKeys[i]);
hb.setSide(39);
hb.addMouseListener(new MouseAction());
hl.addLayoutComponent(hb,i,0);
keyboard.add(hb);
}
}
public static int matchKey(char[] kys, char cIn){
for (int i=0; i<kys.length; i++) {
if ( kys[i] == cIn)
return i;
}
return -1;
}
public static void loadKeys(){
ArrayList<ChPar> chArray = new ArrayList<ChPar>();
for ( int i=1; i<myChars.length; i++ )
if ( myChars[i].cIn != 0)
chArray.add(myChars[i]);
char[] myKeys = keys;
for (int i=0; i<keys.length; i++)
myKeys[i] = keys[i];
/* System.out.println("Mykeys in:");
for (int j=0; j<myKeys.length; j++)
System.out.print("myKey[ " + j + "] = " + myKeys[j] + "; ");
System.out.println();*/
Collections.sort(chArray);
char dumy = '%';
int spot = -1;
for (int i=1; i<chArray.size(); i++) {
//for (int i=0; i<=fq.size()-1; i++) {
try {
dumy = chArray.get(i).getcIn();
spot = matchKey(myKeys,dumy);
myKeys[spot] = myKeys[i];
myKeys[i] = dumy;
spot = i;
} catch (Exception e){
}
for (int j=0; j<myKeys.length; j++)
newKeys[j] = myKeys[j];
}
}
public static void loadFollowerKeys(char c){
int pk = charInKey(c);
System.out.println("pk = " + pk + " or etter " + keys[pk]);
System.out.println("cFollowers[] len = " + cFollowers[pk].length);
ArrayList<ChPar> chArray = new ArrayList<ChPar>();
for ( int i=0; i<cFollowers[pk].length; i++ )
if ( cFollowers[pk][i].ct != 0 )
chArray.add(cFollowers[pk][i]);
char[] myKeys = keys;
System.out.println("Old newKeys:");
for (int i=0; i<keys.length; i++) {
myKeys[i] = keys[i];
System.out.print("newKeys["+ i + "] = " + newKeys[i] + "; ");
}
System.out.println();
Collections.sort(chArray);
char dumy = '%';
int spot = -1;
for (int i=1; i<chArray.size(); i++) {
//for (int i=0; i<=fq.size()-1; i++) {
try {
dumy = chArray.get(i).getcIn();
spot = matchKey(myKeys,dumy);
myKeys[spot] = myKeys[i-1];
myKeys[i-1] = dumy;
spot = i;
} catch (Exception e){
}
}
System.out.println("New newKeys:");
for (int j=0; j<myKeys.length; j++){
newKeys[j] = myKeys[j];
System.out.print("newKeys["+ j + "] = " + newKeys[j] + "; ");
}
System.out.println();
}
public static void readFile(){
String lIn;
//File fIn = new File("/Users/batymahn/Documents/workspace/KeyboardApplet/src/test.rtf");
//File fIn = new File("/Users/batymahn/Documents/workspace/KeyboardApplet/src/tese.txt");
//File fIn = new File("C:/Users/batymahn/Documents/test.txt");
File fIn = new File("/Users/batymahn/Documents/workspace/KeyboardApplet/bin/test.rtf");
FileInputStream fSt = null;
BufferedInputStream bISt = null;
DataInputStream dISt = null;
System.out.println("look in " + fIn.getPath());
try {
fSt = new FileInputStream(fIn);
bISt = new BufferedInputStream(fSt);
dISt = new DataInputStream(bISt);
//fSt.getFD()
while ( dISt.available() != 0 ) {
lIn = dISt.readLine();
bigString += lIn;
// System.out.println(lIn);
}
dISt.close();
bISt.close();
fSt.close();
} catch (Exception e) {
System.out.println("file not found..");
System.out.println(e.toString());
}
}
private static void loadChALs() {
for ( int i=0; i<keys.length; i++) {
myChars[i] = new ChPar(keys[i]);
for ( int j=0; j<keys.length; j++ )
cFollowers[i][j] = new ChPar(keys[j]);
}
}
public static int charInKey(char c){
for ( int i=0; i<keys.length; i++ )
if ( keys[i] == c)
return i;
return -1;
}
public static boolean charInArray(char c){
try {
for ( int i=1; i<myChars.length; i++ )
if ( myChars[i].cIn == c)
return true;
} catch(Exception e){
System.out.println(e.toString());
}
return false;
}
public static void addCharCt(char c){
for ( int i=1; i<myChars.length; i++ )
if ( myChars[i].cIn == c){
myChars[i].increment();
break;
}
}
public static void addChar(char c){
if ( charInArray(c) )
addCharCt(c);
}
public static boolean isChar(char c){
for ( int i=0; i<keys.length; i++ )
if ( keys[i] == c)
return true;
return false;
}
public static void incremFollowers(int chos, char c){
int folC = charInKey(c);
if ( (cFollowers[chos][folC] != null) ) {
if (cFollowers[chos][folC].getcIn() == c ) {
cFollowers[chos][folC].increment();
}
} else
System.out.println("cFollowers is null" );
}
public static boolean isInFollower(int pred, char c){
int folC = charInKey(c);
if ( cFollowers[pred][folC] == null )
return false;
else if ( cFollowers[pred][folC].getcIn() == c )
return true;
else
return false;
}
public static void addFollower( char c){
for (int i=0; i<keys.length; i++)
if ( keys[i] == predecessor ){
if ( isInFollower(i,c) ){
int tc = charInKey(c);
incremFollowers(i,c);
break;
}
}
}
public static void process(){
System.out.println("String has " + bigString.length());
for (int i=0; i<bigString.length(); i++){
char c = Character.toUpperCase(bigString.charAt(i));
if ( isChar(c) ) {
addChar(c); // do character statistics
if ( gotFollower) // do follower statistics
addFollower(c);
gotFollower = true;
predecessor = c;
} else {
gotFollower = false;
predecessor = '~';
}
}
}
public static void main(String[] args){
// Load character counting statistics.
loadChALs();
readFile();
process();
loadKeys();
KeyTest2 eg = new KeyTest2();
eg.setVisible(true);
eg.setSize(1000, 800);
eg.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
class MouseAction implements MouseListener {
@Override
public void mouseClicked(MouseEvent e) {
HexButton myBtn = (HexButton)e.getComponent();
System.out.println("Button "+myBtn.getKey()+" clicked");
char cIn = myBtn.getKey();
text.setText(text.getText() + cIn);
keyboard.removeAll();
loadFollowerKeys(cIn);
redrawKeys();
//repaint();
}
@Override
public void mouseEntered(MouseEvent e) {
HexButton myBtn = (HexButton)e.getComponent();
myBtn.setOuterColor(Color.GREEN);
myBtn.paintComponent(myBtn.getGraphics());
}
@Override
public void mouseExited(MouseEvent e) {
HexButton myBtn = (HexButton)e.getComponent();
myBtn.setOuterColor(Color.GRAY);
myBtn.repaint();
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
}
}

The challenge is that my layoutmanager seems to screw-up the gridbaglayout so I can't control the exact size and placement of the keyboard. I've tried the gridlayout but it clips the top and bottom keys. Any ideas would be welcome.
Chris

14 years ago

Swing / AWT / SWT

Removing Objects from a Custom Layout

@Override
public void addLayoutComponent(Component arg0, Object arg1) {
// TODO Auto-generated method stub

}

14 years ago

Swing / AWT / SWT

Removing Objects from a Custom Layout

Hi Guys,
I created my own custom LayoutManager, which works okay. But now I want to remove a button when it's been clicked. Has anyone ever implemented removeLayoutComponent(Component)? I'm just looking for an example.
Thanks.
Chris

14 years ago

Swing / AWT / SWT

Printing Special Characters, TAB, CR, etc

Hi Ranchers,
I'm designing a virtual keyboard in JAVA. My current challenge is printing out character representations of special characters, like the 'tab key', 'carrage return' and the 'shift key'. I was hoping to use standard characters, like up-arrow, down-arrow, etc, but I'm begining to think that they don't exist in JAVA. Is this correct?

I tried:

Thanks.
Chris

14 years ago

Java in General

Outline Issue with Custom Layout Manager

Okay, but I'm not sure where the problem is, if there's a problem that I can correct? I'm guessing it's in here:

Thanks.
Chris

14 years ago

Swing / AWT / SWT

Outline Issue with Custom Layout Manager

Hi guys,
I just finished my own Honeycomb layout manager and hexagonal button. For convenience, I've been developing on an IMac and it looks great. But on Windows and Linux I get these annoying height and width outlines - which are rectangular. I've tried LayoutManager2 with the same results. Any idea how to get rid of them?
Thanks.
Chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Once again, I'm an idiot, I took out the getModel code in the button class and everything worked fine.

Thanks again.

Chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Okay, I'm an idiot sometimes. This is what I got:

I know the mouselistener works because when I click on the button I get letter "A". But I still don't understand how to tell the button to repaint itself.

Thanks for all the help so far.
Chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Okay, this is my second attempt. Here's what I got in my test program:

Here's my button class:

It still doesn't respond. The other issue I have is eventually these buttons will be keys in a virtual keyboard. If that's the case should I use a MouseListener anyway since I'll need to return the button label?
Thanks.
Chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Okay, I'm still confused. I added a MouseListener subclass to my JButton class:

How does the MouseListener subclass tell paintComponent() to run again?

Then I did this in the JButton constructor:

How do I add the MouseListener to my test class? I tried:

Thanks again.
chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Thanks. I'll give it a go.
Chris

14 years ago

Swing / AWT / SWT

Creating mouse rollover for for custom drawn JButton

Hi guys,
Does anyone know how to create a rollover for a custom drawn button? It's easy if you use Icon but mine is custom drawn. If I implement the mouselistener in the myButton class where do I add the listener. If I implement the listener in the JFrame class how does that class know only to redraw that button? I'm confused.

Any help would be appreciated.

Chris

14 years ago

Swing / AWT / SWT