Change font with a bottom.
Hi,
I couldn't find an answer for this but: Is there a way to chnage the font in the front panel by pressing a button?
As you can see, I am building a farily simple starwars-theme-application, what I want to to is to use that funky starwar font ( like the one os top of the siganl inputs), but when a button is press the font goes back to a readable font (ie; arial)
Solved!
Go to Solution.
You can create a property node for each of the controls you want to change. Write the font name to the property Label.FontName.
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Okay I've tried to implement a JComboBox that allows the user to change fonts in the text field. So far I've tried different methods to do it but to no avail. Could somebodoy here read the programs source code for me and tell me where I went wrong?
/* * My GUI Client */
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;
import javax.swing.event.*;
//for HTML Headers
import javax.swing.text.StyledEditorKit.*;
import javax.swing.text.html.HTMLEditorKit.*;
import javax.swing.text.html.*;
import javax.swing.event.HyperlinkListener;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkEvent.EventType;
import javax.swing.text.html.HTMLFrameHyperlinkEvent;
//for layout managers
import java.awt.event.*;
//for action and window events
import java.io.*;
import java.net.*;
import java.awt.GraphicsEnvironment;
//for font settings
import java.lang.Integer;
import java.util.Vector;
import java.awt.font.*;
import java.awt.geom.*;
public class guiClient extends JFrame implements ActionListener {
protected static final String textFieldString = "JTextField";
protected static final String loadgraphicString = "LoadGraphic";
protected static final String connectString = "Connect";
static JEditorPane editorPane;
static JPanel layoutPanel = new JPanel(new BorderLayout());
static JPanel controlPanel = new JPanel(new BorderLayout());
static JPanel buttonPanel = new JPanel(new BorderLayout());
static JPanel fontPanel = new JPanel(new BorderLayout());
static PrintStream out;
static DrawPanel dPanel;
static DrawPanel dPButton;
static DrawPanel dFonts;
static DrawControls dControls;
static DrawButtons dButtons;
static String userString;
static String currentFont;
String fontchoice;
String fontlist;
static JTextField userName = new JTextField();
public static JMenuBar menuBar;
private static JButton connectbutton = new JButton("Connect");
static boolean CONNECTFLAG = false;
//create the gui interface
public guiClient() {
super("My Client");
// Create a ComboBox
GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment();
String envfonts[] = gEnv.getAvailableFontFamilyNames();
Vector vector = new Vector();
for ( int i = 1; i < envfonts.length; i++ ) {
vector.addElement(envfonts);
JComboBox fontlist = new JComboBox (envfonts);
fontlist.setSelectedIndex(0);
fontlist.setEditable(true);
fontlist.addActionListener(this);
fontchoice = envfonts[0];
//Create a regular text field.
JTextField textField = new JTextField(10);
textField.setActionCommand(textFieldString);
textField.addActionListener(this);
//Create an editor pane.
editorPane = new JEditorPane();
editorPane.setContentType("text");
editorPane.setEditable(false);
//set up HTML editor kit
HTMLDocument m_doc = new HTMLDocument();
editorPane.setDocument(m_doc);
HTMLEditorKit hkit = new HTMLEditorKit();
editorPane.setEditorKit( hkit );
editorPane.addHyperlinkListener( new HyperListener());
//Create whiteboard
dPanel = new DrawPanel();
dPButton = new DrawPanel();
dFonts = new DrawPanel();
dControls = new DrawControls(dPanel);
dButtons = new DrawButtons(dPButton);
//JLable fontLab = new JLabel(fontLable);
//fontLab.setText("Fonts");
//Font newFont = getFont().deriveFont(1);
//fontLab.setFont(newFont);
//fontLab.setHorizontalAlignment(JLabel.CENTER);
JPanel whiteboard = new JPanel();
whiteboard.setLayout(new BorderLayout());
whiteboard.setPreferredSize(new Dimension(300,300));
whiteboard.add("Center",dPanel);
whiteboard.add("South",dControls);
whiteboard.add("North",dButtons);
JScrollPane editorScrollPane = new JScrollPane(editorPane);
editorScrollPane.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
editorScrollPane.setPreferredSize(new Dimension(250, 145));
editorScrollPane.setMinimumSize(new Dimension(50, 50));
//put everything in a panel
JPanel contentPane = new JPanel();
JPanel fontPane = new JPanel();
contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.Y_AXIS));
//add whiteboard
contentPane.add(whiteboard);
//add editor box
contentPane.add(editorScrollPane);
//add spacer
contentPane.add(Box.createRigidArea(new Dimension(0,5)));
//add textfield
contentPane.add(textField);
//set up layout pane
//layoutPanel.add(GridLayout(2,1),fontLab);
layoutPanel.add( BorderLayout.NORTH, fontlist);
layoutPanel.add(BorderLayout.WEST,new Label("Name: ")); //add a label
layoutPanel.add(BorderLayout.CENTER, userName ); //add textfield for user names
layoutPanel.add(BorderLayout.SOUTH, connectbutton);//add dropdown box for fonts
//fontPane.add(BorderLayout.NORTH,fontlist);
contentPane.add(layoutPanel);
contentPane.add(controlPanel);
contentPane.add(buttonPanel);
//Create the menu bar.
menuBar = new JMenuBar();
setJMenuBar(menuBar);
//Build the first menu.
JMenu menu = new JMenu("File");
menu.setMnemonic(KeyEvent.VK_F);
menuBar.add(menu);
//a group of JMenuItems
JMenuItem menuItem = new JMenuItem("Load Graphic", KeyEvent.VK_L);
menu.add(menuItem);
menuItem.setActionCommand(loadgraphicString);
menuItem.addActionListener(this);
connectbutton.setActionCommand(connectString);
connectbutton.addActionListener(this);
setContentPane(contentPane);
static private void insertTheHTML(JEditorPane editor, String html, int location) throws IOException {
HTMLEditorKit kit = (HTMLEditorKit) editor.getEditorKit();
Document doc = editor.getDocument();
StringReader reader = new StringReader(html);
try {
kit.read(reader, doc, location);
} catch (BadLocationException e) {}
//listen for actions being performed and process them
public void actionPerformed(ActionEvent e) {
//if the action is from the textfield (e.g. user hits enter)
if (e.getActionCommand().equals(textFieldString)) {
JTextField fromUser = (JTextField)e.getSource();
if (fromUser != null){
//place user text in editor pane
//send message to server
if (userName.getText() != null) {
userString = userName.getText().trim();
out.println(userString + ": " + fromUser.getText());
fromUser.setText("");
} else if(e.getActionCommand().equals(connectString)) {
CONNECTFLAG = true;
} else if (e.getActionCommand().equals(loadgraphicString) ) {
final JFileChooser fc = new JFileChooser();
int returnVal = fc.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
dPanel.loadImage(file.getAbsolutePath());
sendImage(file);
else if (e.getActionCommand().equals(fontlist)){
JComboBox cb = (JComboBox)e.getSource();
String newSelection = (String)cb.getSelectedItem();
currentFont = newSelection;
userString = currentFont;
return;
/*public void itemStateChanged (ItemEvent e) {
if ( e.getStateChange() != ItemEvent.SELECTED ) {
return;
if ( list == fontlist ) {
fontchoice = (String)fontlist.getSelectedItem();
userString.changeFont(fontchoice);
//append text to the editor pane and put it at the bottom
public static void appendText(String text) {
if (text.startsWith("ID ") ) {
userString = text.substring(3);
} else if (text.startsWith("DRAW ") ) {
if (text.regionMatches(5,"LINE",0,4)) {
dPanel.processLine(text);
}else if (text.regionMatches(5,"POINTS",0,5)) {
dPanel.processPoint(text);
} else if (text.startsWith("IMAGE ") ) {
int len = (new Integer( text.substring(6, text.indexOf(",")))).intValue();
//get x and y coordinates
byte[] data = new byte[ (int)len ];
int read = 0;
try {
while (read < len) {
data = text.getBytes( text.substring(0, len) );
} catch (Exception e) {}
Image theImage = null;
theImage = dPanel.getToolkit().createImage(data);
dPanel.getToolkit().prepareImage(theImage, -1, -1, dPanel);
while ((dPanel.getToolkit().checkImage(theImage, -1, -1, dPanel) & dPanel.ALLBITS) == 0) {}
dPanel.drawPicture(0, 0, theImage);
} else {
//set current position in editorPane to the end
editorPane.setCaretPosition(editorPane.getDocument().getLength());
//put text into the editorPane
try {
insertTheHTML(editorPane, text, editorPane.getDocument().getLength());
} catch (IOException e) {}
} //end of appendText(String)
public void sendImage(File file) {
//find length of file
long len = file.length();
//read file into byte array
byte[] byteArray = new byte[(int)len];
try {
FileInputStream fstream = new FileInputStream(file);
if (fstream.read(byteArray) < len) {
//error could not load file
} else {
out.println("IMAGE " + len + ",");
out.write(byteArray, 0, (int)len); //write file to stream
} catch(Exception e){}
//run the client
public static void main(String[] args) {
String ipAddr=null, portNr=null;
if (args.length != 2) {
System.out.println("USAGE: java guiClient IP_Address port_number");
System.exit(0);
} else {
ipAddr = args[0];
portNr = args[1];
JFrame frame = new guiClient();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) { System.exit(0); }
frame.pack();
frame.setVisible(true);
while(CONNECTFLAG == false){}
//sames as previous client,
//set up connection and then listen for messages from the Server
String socketIP = ipAddr;
int port = Integer.parseInt(portNr);
//the IP address of the machine where the server is running
Socket theSocket = null;
//communication line to the server
out = null;
//for message sending
BufferedReader in = null;
//for message receiving
try {
theSocket = new Socket(socketIP, port );
//try to connect
out = new PrintStream(theSocket.getOutputStream());
dPanel.out = out;
//for client to send messages
in = new BufferedReader(new InputStreamReader(theSocket.getInputStream()));
BufferedReader userIn = new BufferedReader(new InputStreamReader(System.in));
String fromServer;
while ((fromServer = in.readLine()) != null) {
appendText(fromServer);
if (fromServer.equals("BYE")) {
appendText("Connection Closed");
break;
out.close();
//close all streams
in.close();
theSocket.close();
//close the socket
} catch (UnknownHostException e) {
//if the socket cannot be openned
System.err.println("Cannot find " + socketIP);
System.exit(1);
} catch (IOException e) { //if the socket cannot be read or written
System.err.println("Could not make I/O connection with " + socketIP);
System.exit(1);
class HyperListener implements HyperlinkListener {
public JEditorPane sourcePane;
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
sourcePane = (JEditorPane) e.getSource();
if (e instanceof HTMLFrameHyperlinkEvent) {
HTMLFrameHyperlinkEvent event = (HTMLFrameHyperlinkEvent) e;
System.out.println(event.getTarget());
HTMLDocument doc = (HTMLDocument) sourcePane.getDocument();
doc.processHTMLFrameHyperlinkEvent(event);
else {
try {}
catch (Exception ev){
ev.printStackTrace();
Well sorry the source code takes up the whole forum but I need a good feedback from this.All right...
public class guiClient extends JFrame implements ActionListener {
static String userString;
static String currentFont;
String fontchoice;
String fontlist;
static JTextField userName = new JTextField();
public guiClient() {
super("My Client");
public guiClient() {
super("My Client");
// Create a ComboBox
GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment();
String envfonts[] = gEnv.getAvailableFontFamilyNames();
Vector vector = new Vector();
for ( int i = 1; i < envfonts.length; i++ ) {
vector.addElement(envfonts);
JComboBox fontlist = new JComboBox (envfonts);
fontlist.setSelectedIndex(0);
fontlist.setEditable(true);
fontlist.addActionListener(this);
fontchoice = envfonts[0];
//Create a regular text field.
JTextField textField = new JTextField(10);
textField.setActionCommand(textFieldString);
textField.addActionListener(this);
public void actionPerformed(ActionEvent e) {
//if the action is from the textfield (e.g. user hits enter)
if (e.getActionCommand().equals(textFieldString)) {
JTextField fromUser = (JTextField)e.getSource();
if (fromUser != null){
//place user text in editor pane
//send message to server
if (userName.getText() != null) {
userString = userName.getText().trim();
out.println(userString + ": " + fromUser.getText());
fromUser.setText("");
else if (e.getActionCommand().equals(fontlist)){
JComboBox cb = (JComboBox)e.getSource();
String newSelection = (String)cb.getSelectedItem();
currentFont = newSelection;
userString = currentFont;
return; -
Embedded fonts with rich editable text
Hi, I am trying to use my embedded fonts in rich editable text field, but it only works for users that already have that font installed on their system.
This is what I do.
I embed fonts like this:
@font-face {
src:url("fonts/Cantarell-Regular.ttf");
fontFamily: Cantarell;
advancedAntiAliasing: true;
@font-face {
src:url("fonts/Cantarell-Bold.ttf");
fontFamily: Cantarell;
fontWeight: bold;
advancedAntiAliasing: true;
Then in my DropDownList (id=fontPicker) I add a new string entry that references my new font (in this case "Cantarell")
I have a custom item renderer which makes sure to print out the name of the font using the font itself, so that for example font name "Cantarell" will be printed out using Cantarell font. Code in my custom font item renderer looks like this:
<s:Label id="labelDisplay"
fontFamily="{data}"
verticalCenter="0"
left="3" right="3" top="6" bottom="4"/>
And this part works, even if you dont have the font installed on your system, the name of the font is displayed propperly.
The thing that I want to do is to select some text in my rich editable text field and change the font of the selected text depending on what user selected from the dropdownlist. I added an event which is called once user selects new font type, and it performs following code on the selection in rich editable text:
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text.setFocus();
return;
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txtLayFmt.fontFamily = fontPicker.selectedItem;
// I even tryed to add those two following lines without much help
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//txtLayFmt.renderingMode = RenderingMode.CFF;
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text.setFocus();
This code works perfect if user has the font installed on their system but it does not work if they dont have the font even if I embed the font.
What I am doing wrong, any suggestions, tips, links?
Thanks,
DalThanks I will take a look at your blogs, maybe I find some explanations.
Once it comes to my problem, I found a solution, I just needed to add a simple style:
.mystyle1 {
fontFamily:Cantarell;
and set the styleName of my text to it:
text.styleName = "mystyle1";
Afterwards I can dynamically change fonts and sizes of the text selections in my rich editable text field as much as I like.
Also I need to make sure that I set embed-as-cff: true;
@font-face {
src:url("fonts/Cantarell-Bold.ttf");
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I hope this helps someone.
And if anyone has explanation to why embedded fonts work only after I change styleName of a text to a random style, please share with me.
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Dal. -
How to change font/ font color etc in a graphic object using JCombobox?
Hello
My program im writing recently is a small tiny application which can change fonts, font sizes, font colors and background color of the graphics object containing some strings. Im planning to use Jcomboboxes for all those 4 ideas in implementing those functions. Somehow it doesnt work! Any help would be grateful.
So currently what ive done so far is that: Im using two classes to implement the whole program. One class is the main class which contains the GUI with its components (Jcomboboxes etc..) and the other class is a class extending JPanel which does all the drawing. Therefore it contains a graphics object in that class which draws the string. However what i want it to do is using jcombobox which should contain alit of all fonts available/ font sizes/ colors etc. When i scroll through the lists and click the one item i want - the graphics object properties (font sizes/ color etc) should change as a result.
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Another problem is that to set the color of font - i need to use it with a graphics object in the paintcomponent method. In this case i dnt want to create several diff paint.. method with different property settings (font/ size/ color)
Below is my code; perhaps you'll understand more looking at code.
public class main...
Color[] Colors = {Color.BLUE, Color.RED, Color.GREEN};
ColorList = new JComboBox(Colors);
ColorList.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
JComboBox cb = (JComboBox)ev.getSource();
Color colorType = (Color)cb.getSelectedItem();
drawingBoard.setBackground(colorType);
});;1) providing the GUI is correctly implemented with components
2) Combobox stores the colors in an array
3) ActionListener should do following job: (but cant get it right - that is where my problem is)
- once selected the item (color/ font size etc... as i would have similar methods for each) i want, it should pass the item into the drawingboard class (JPanel) and then this class should do the job.
public class DrawingBoard extends JPanel {
private String message;
public DrawingBoard() {
setBackground(Color.white);
Font font = new Font("Serif", Font.PLAIN, fontSize);
setFont(font);
message = "";
public void setMessage(String m) {
message = m;
repaint();
public void paintComponent(Graphics g) {
super.paintComponent(g);
//setBackground(Color.RED);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint
g2.drawString(message, 50, 50);
public void settingFont(String font) {
//not sure how to implement this? //Jcombobox should pass an item to this
//it should match against all known fonts in system then set that font to the graphics
private void settingFontSize(Graphics g, int f) {
//same probelm with above..
public void setBackgroundColor(Color c) {
setBackground(c);
repaint(); // still not sure if this done corretly.
public void setFontColor(Color c) {
//not sure how to do this part aswell.
//i know a method " g.setColor(c)" exist but i need to use a graphics object - and to do that i need to pass it in (then it will cause some confusion in the main class (previous code)
My problems have been highlighted in the comments of code above.
Any help will be much appreciated thanks!!!It is the completely correct code
I hope that's what you need
Just put DrawingBoard into JFrame and run
Good luck!
public class DrawingBoard extends JPanel implements ActionListener{
private String message = "message";
private Font font = new Font("Serif", Font.PLAIN, 10);
private Color color = Color.RED;
private Color bg = Color.WHITE;
private int size = 10;
public DrawingBoard(){
JComboBox cbFont = new JComboBox(GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames());
cbFont.setActionCommand("font");
JComboBox cbSize = new JComboBox(new Integer[]{new Integer(14), new Integer(13)});
cbSize.setActionCommand("size");
JComboBox cbColor = new JComboBox(new Color[]{Color.BLUE, Color.RED, Color.GREEN});
cbColor.setActionCommand("color");
JComboBox cbBG = new JComboBox(new Color[]{Color.BLUE, Color.RED, Color.GREEN});
cbBG.setActionCommand("bg");
add(cbFont);
cbFont.addActionListener(this);
add(cbSize);
cbSize.addActionListener(this);
add(cbColor);
cbColor.addActionListener(this);
add(cbBG);
cbBG.addActionListener(this);
public void setMessage(String m){
message = m;
repaint();
protected void paintComponent(Graphics g){
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setColor(bg);//set background color
g2.fillRect(0,0, getWidth(), getHeight());
g2.setColor(color);//set text color
FontRenderContext frc = g2.getFontRenderContext();
TextLayout tl = new TextLayout(message,font,frc);//set font and message
AffineTransform at = new AffineTransform();
at.setToTranslation(getWidth()/2-tl.getBounds().getWidth()/2,
getWidth()/2 + tl.getBounds().getHeight()/2);//set text at center of panel
g2.fill(tl.getOutline(at));
public void actionPerformed(ActionEvent e){
JComboBox cb = (JComboBox)e.getSource();
if (e.getActionCommand().equals("font")){
font = new Font(cb.getSelectedItem().toString(), Font.PLAIN, size);
}else if (e.getActionCommand().equals("size")){
size = ((Integer)cb.getSelectedItem()).intValue();
}else if (e.getActionCommand().equals("color")){
color = (Color)cb.getSelectedItem();
}else if (e.getActionCommand().equals("bg")){
bg = (Color)cb.getSelectedItem();
repaint();
}
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