I am making an application similar to a chat. For that purpose I have two JTextPanes, one where I'm writing and one that displays messages. This is the code that handles the transferring of text from input to display :
String input = textPane.getText();
if(!input.endsWith("\n")){
input+="\n";
}
StyledDocument doc = displayPane.getStyledDocument();
int offset = displayPane.getCaretPosition();
textPane.setText("");
try {
doc.insertString(offset, input, set);
} catch (BadLocationException ex) {
Logger.getLogger(ChatComponent.class.getName()).log(Level.SEVERE, null, ex);
}
The problem is that if i have colour on some words of the input text , the output is all coloured . So the colour is applied to all of the text when moved to display(while displayed correctly on input). Any suggestions on how i can move text properly?
Notice that same happens with other format as bold , italic etc
The text is already formatted on the input JTextPane . What i need to do
is transfer it as it is on a different JTextPane without having to check
the different style options
example
import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;
public class Fonts implements Runnable {
private String[] fnt;
private JFrame frm;
private JScrollPane jsp;
private JTextPane jta;
private int width = 450;
private int height = 300;
private GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
private StyledDocument doc;
private MutableAttributeSet mas;
private int cp = 0;
private Highlighter.HighlightPainter cyanPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.cyan);
private Highlighter.HighlightPainter redPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.red);
private Highlighter.HighlightPainter whitePainter = new DefaultHighlighter.DefaultHighlightPainter(Color.white);
private int _count = 0;
private int _lenght = 0;
public Fonts() {
jta = new JTextPane();
doc = jta.getStyledDocument();
jsp = new JScrollPane(jta);
jsp.setPreferredSize(new Dimension(height, width));
frm = new JFrame("awesome");
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setLayout(new BorderLayout());
frm.add(jsp, BorderLayout.CENTER);
frm.setLocation(100, 100);
frm.pack();
frm.setVisible(true);
jta.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
fnt = ge.getAvailableFontFamilyNames();
mas = jta.getInputAttributes();
new Thread(this).start();
}
#Override
public void run() {
for (int i = 0; i < fnt.length; i++) {
StyleConstants.setBold(mas, false);
StyleConstants.setItalic(mas, false);
StyleConstants.setFontFamily(mas, fnt[i]);
StyleConstants.setFontSize(mas, 16);
dis(fnt[i]);
try {
Thread.sleep(75);
} catch (Exception e) {
e.printStackTrace();
}
StyleConstants.setBold(mas, true);
dis(fnt[i] + " Bold");
try {
Thread.sleep(75);
} catch (Exception e) {
e.printStackTrace();
}
StyleConstants.setItalic(mas, true);
dis(fnt[i] + " Bold & Italic");
try {
Thread.sleep(75);
} catch (Exception e) {
e.printStackTrace();
}
StyleConstants.setBold(mas, false);
dis(fnt[i] + " Italic");
try {
Thread.sleep(75);
} catch (Exception e) {
e.printStackTrace();
}
}
jta.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
}
public void dis(String s) {
_count++;
_lenght = jta.getText().length();
try {
doc.insertString(cp, s, mas);
doc.insertString(cp, "\n", mas);
} catch (Exception bla_bla_bla_bla) {
bla_bla_bla_bla.printStackTrace();
}
if (_count % 2 == 0) {
try {
jta.getHighlighter().addHighlight(1, _lenght - 1, cyanPainter);
} catch (BadLocationException bla_bla_bla_bla) {
}
} else if (_count % 3 == 0) {
try {
jta.getHighlighter().addHighlight(1, _lenght - 1, redPainter);
} catch (BadLocationException bla_bla_bla_bla) {
}
} else {
try {
jta.getHighlighter().addHighlight(1, _lenght - 1, whitePainter);
} catch (BadLocationException bla_bla_bla_bla) {
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
Fonts fs = new Fonts();
}
});
}
}
In the absence of a good SSCCE, I really don't know how you adding colour to the text on your JTextPane, but hopefully this method might sort things out for you :
import javax.swing.text.AttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
private void appendToTextPane(String name, Color c, String f)
{
StyleContext sc = StyleContext.getDefaultStyleContext();
AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, c);
aset = sc.addAttribute(aset, StyleConstants.FontFamily, f);
int len = Client.nPane.getDocument().getLength();
textPane.setCaretPosition(len);
textPane.setCharacterAttributes(aset, true);
textPane.replaceSelection(name);
}
With this you can give a different Color and Font to each String literal that will be added to your JTextPane.
Hope this new Code might help you in some way :
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.AttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
public class TextPaneTest extends JFrame
{
private JPanel topPanel;
private JPanel bottomPanel;
private JTextPane tPane1;
private JTextPane tPane2;
private JButton button;
public TextPaneTest()
{
topPanel = new JPanel();
topPanel.setLayout(new GridLayout(1, 2));
bottomPanel = new JPanel();
bottomPanel.setBackground(Color.BLACK);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
StyleContext sc = StyleContext.getDefaultStyleContext();
AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, Color.BLUE);
aset = sc.addAttribute(aset, StyleConstants.FontFamily, "Lucida Console");
tPane1 = new JTextPane();
tPane1.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
tPane1.setCharacterAttributes(aset, false); // Add these settings to the other JTextPane also
tPane2 = new JTextPane();
tPane2.setCharacterAttributes(aset, false); // Mimic what the other JTextPane has
button = new JButton("ADD TO THE TOP JTEXTPANE");
button.setBackground(Color.DARK_GRAY);
button.setForeground(Color.WHITE);
button.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
tPane1.setText(tPane2.getText());
}
});
add(topPanel, BorderLayout.CENTER);
add(bottomPanel, BorderLayout.PAGE_END);
topPanel.add(tPane1);
topPanel.add(tPane2);
bottomPanel.add(button);
pack();
tPane2.requestFocusInWindow();
setVisible(true);
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new TextPaneTest();
}
});
}
}
Regards
This has been solved by merging the document models of the two panes. The solution is in this question: Keeping the format on text retrieval
Related
When I run my code there is only the empty frame. To see the JButton and the JTextFields I have to search and click on them before they are visible. I searched everywhere on the Internet but I found nothing. I also set the visibility to true and added the JComponents. Here is my Code:
Frame Fenster = new Frame();
And this...
package me.JavaProgramm;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
public class Frame extends JFrame {
private JButton bChange;
private JTextField tvonEur;
private JTextField tzuOCur; //andere Währung (other Currency)
private JTextField tzuEur;
private JTextField tvonOCur;
private JComboBox cbCur; //Wärhung wählen
private String curName;
private double faktorUSD;
private double faktorGBP;
private static String[] comboCur = {"USD", "GBP"};
public Frame() {
setLayout(null);
setVisible(true);
setSize(400, 400);
setTitle("Währungsrechner");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setAlwaysOnTop(true);
setResizable(false);
Font schrift = new Font("Serif", Font.PLAIN + Font.ITALIC, 30);
tvonEur = new JTextField("Euro");
tvonEur.setSize(80, 25);
tvonEur.setLocation(20, 50);
tvonEur.requestFocusInWindow();
tvonEur.selectAll();
tzuEur = new JTextField("Euro");
tzuEur.setSize(80, 25);
tzuEur.setLocation(20, 150);
tzuEur.requestFocusInWindow();
tzuEur.selectAll();
bChange = new JButton("Euro zu US-Dollar");
bChange.setSize(120, 25);
bChange.setLocation(110, 50);
tzuOCur = new JTextField("US-Dollar");
tzuOCur.setSize(80, 25);
tzuOCur.setLocation(240, 50);
tzuOCur.requestFocusInWindow();
tzuOCur.selectAll();
tvonOCur = new JTextField("US-Dollar");
tvonOCur.setSize(80, 25);
tvonOCur.setLocation(240, 50);
tvonOCur.requestFocusInWindow();
tvonOCur.selectAll();
cbCur = new JComboBox(comboCur);
cbCur.setSize(100, 20);
cbCur.setLocation(100, 100);
tvonEur.setVisible(true);
tzuEur.setVisible(true);
tzuOCur.setVisible(true);
tvonOCur.setVisible(true);
bChange.setVisible(true);
cbCur.setVisible(true);
add(tvonEur);
add(bChange);
add(tzuOCur);
add(cbCur);
Currency currency = new Currency();
String strUSD = currency.convertUSD();
try {
NumberFormat formatUSD = NumberFormat.getInstance(Locale.GERMANY);
Number numberUSD = formatUSD.parse(strUSD);
faktorUSD = numberUSD.doubleValue();
System.out.println(faktorUSD);
} catch (ParseException e) {
System.out.println(e);
}
String strGBP = currency.convertGBP();
try {
NumberFormat formatGBP = NumberFormat.getInstance(Locale.GERMANY);
Number numberGBP = formatGBP.parse(strGBP);
faktorGBP = numberGBP.doubleValue();
System.out.println(faktorGBP);
} catch (ParseException e) {
System.out.println(e);
}
cbCur.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
cbCur = (JComboBox) e.getSource();
curName = (String) cbCur.getSelectedItem();
if (curName == "USD") {
tzuOCur.setText("US-Dollar");
} else if (curName == "GBP") {
tzuOCur.setText("British-Pound");
}
}
});
bChange.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
if (curName == "USD") {
try {
Double doubleEUR = Double.parseDouble(tvonEur.getText());
Double doubleUSD = doubleEUR * faktorUSD;
tzuOCur.setText(Double.toString(roundScale3(doubleUSD)));
} catch (NumberFormatException nfe) {
System.out.println("Gebe einen richten Wert ein!");
}
} else if (curName == "GBP") {
try {
Double doubleEUR = Double.parseDouble(tvonEur.getText());
Double doubleGBP = doubleEUR * faktorGBP;
tzuOCur.setText(Double.toString(roundScale3(doubleGBP)));
} catch (NumberFormatException nfe) {
System.out.println("Gebe einen richten Wert ein!");
}
}
}
});
}
public static double roundScale3(double d) {
return Math.rint(d * 1000) / 1000.;
}
}
Try moving setVisible(true) after you add the children to the parent container.
Generally with Swing it's considered good practice to put code that updates visible components in the event dispatching thread, like this:
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
Frame.this.setVisible(true);
}
});
I have a jframe with page navigation buttons,print,search buttons.When i clicked on the print button it is perfectly opening the window and i am able to print the page also.But when i clicked on search button i am not able to get the window.My requirement is clicking on the Search button should open a window(same as print window) with text field and when i enter the search data then it should display the matches and unmatches.
I have tried the below code but i am not succeed.
import com.google.common.base.CharMatcher;
import com.sun.pdfview.PDFFile;
import com.sun.pdfview.PDFPage;
import com.sun.pdfview.PDFRenderer;
import com.sun.pdfview.PagePanel;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.standard.PageRanges;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import static com.google.common.base.Strings.isNullOrEmpty;
public class PdfViewer extends JPanel {
private static enum Navigation {
GO_FIRST_PAGE, FORWARD, BACKWARD, GO_LAST_PAGE, GO_N_PAGE
}
private static final CharMatcher POSITIVE_DIGITAL = CharMatcher.anyOf("0123456789");
private static final String GO_PAGE_TEMPLATE = "%s of %s";
private static final int FIRST_PAGE = 1;
private int currentPage = FIRST_PAGE;
private JButton btnFirstPage;
private JButton btnPreviousPage;
private JTextField txtGoPage;
private JButton btnNextPage;
private JButton btnLastPage;
private JButton print;
private JButton search;
private PagePanel pagePanel;
private PDFFile pdfFile;
public PdfViewer() {
initial();
}
private void initial() {
setLayout(new BorderLayout(0, 0));
JPanel topPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
add(topPanel, BorderLayout.NORTH);
btnFirstPage = createButton("|<<");
topPanel.add(btnFirstPage);
btnPreviousPage = createButton("<<");
topPanel.add(btnPreviousPage);
txtGoPage = new JTextField(10);
txtGoPage.setHorizontalAlignment(JTextField.CENTER);
topPanel.add(txtGoPage);
btnNextPage = createButton(">>");
topPanel.add(btnNextPage);
btnLastPage = createButton(">>|");
topPanel.add(btnLastPage);
print = new JButton("print");
topPanel.add(print);
search = new JButton("search");
topPanel.add(search);
JScrollPane scrollPane = new JScrollPane();
add(scrollPane, BorderLayout.CENTER);
JPanel viewPanel = new JPanel(new BorderLayout(0, 0));
scrollPane.setViewportView(viewPanel);
pagePanel = new PagePanel();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
pagePanel.setPreferredSize(screenSize);
viewPanel.add(pagePanel, BorderLayout.CENTER);
disableAllNavigationButton();
btnFirstPage.addActionListener(new PageNavigationListener(Navigation.GO_FIRST_PAGE));
btnPreviousPage.addActionListener(new PageNavigationListener(Navigation.BACKWARD));
btnNextPage.addActionListener(new PageNavigationListener(Navigation.FORWARD));
btnLastPage.addActionListener(new PageNavigationListener(Navigation.GO_LAST_PAGE));
txtGoPage.addActionListener(new PageNavigationListener(Navigation.GO_N_PAGE));
print.addActionListener(new PrintUIWindow());
search.addActionListener(new Action1());
}
static class Action1 implements ActionListener {
public void actionPerformed (ActionEvent e) {
JFrame parent = new JFrame();
JDialog jDialog = new JDialog();
Label label = new Label("Enter Word: ");
final JTextField jTextField = new JTextField(100);
JPanel panel = new JPanel();
parent.add(panel);
panel.add(label);
panel.add(jTextField);
parent.setLocationRelativeTo(null);
}
}
private JButton createButton(String text) {
JButton button = new JButton(text);
button.setPreferredSize(new Dimension(55, 20));
return button;
}
private void disableAllNavigationButton() {
btnFirstPage.setEnabled(false);
btnPreviousPage.setEnabled(false);
btnNextPage.setEnabled(false);
btnLastPage.setEnabled(false);
}
private boolean isMoreThanOnePage(PDFFile pdfFile) {
return pdfFile.getNumPages() > 1;
}
private class PageNavigationListener implements ActionListener {
private final Navigation navigation;
private PageNavigationListener(Navigation navigation) {
this.navigation = navigation;
}
public void actionPerformed(ActionEvent e) {
if (pdfFile == null) {
return;
}
int numPages = pdfFile.getNumPages();
if (numPages <= 1) {
disableAllNavigationButton();
} else {
if (navigation == Navigation.FORWARD && hasNextPage(numPages)) {
goPage(currentPage, numPages);
}
if (navigation == Navigation.GO_LAST_PAGE) {
goPage(numPages, numPages);
}
if (navigation == Navigation.BACKWARD && hasPreviousPage()) {
goPage(currentPage, numPages);
}
if (navigation == Navigation.GO_FIRST_PAGE) {
goPage(FIRST_PAGE, numPages);
}
if (navigation == Navigation.GO_N_PAGE) {
String text = txtGoPage.getText();
boolean isValid = false;
if (!isNullOrEmpty(text)) {
boolean isNumber = POSITIVE_DIGITAL.matchesAllOf(text);
if (isNumber) {
int pageNumber = Integer.valueOf(text);
if (pageNumber >= 1 && pageNumber <= numPages) {
goPage(Integer.valueOf(text), numPages);
isValid = true;
}
}
}
if (!isValid) {
JOptionPane.showMessageDialog(PdfViewer.this,
format("Invalid page number '%s' in this document", text));
txtGoPage.setText(format(GO_PAGE_TEMPLATE, currentPage, numPages));
}
}
}
}
private void goPage(int pageNumber, int numPages) {
currentPage = pageNumber;
PDFPage page = pdfFile.getPage(currentPage);
pagePanel.showPage(page);
boolean notFirstPage = isNotFirstPage();
btnFirstPage.setEnabled(notFirstPage);
btnPreviousPage.setEnabled(notFirstPage);
txtGoPage.setText(format(GO_PAGE_TEMPLATE, currentPage, numPages));
boolean notLastPage = isNotLastPage(numPages);
btnNextPage.setEnabled(notLastPage);
btnLastPage.setEnabled(notLastPage);
}
private boolean hasNextPage(int numPages) {
return (++currentPage) <= numPages;
}
private boolean hasPreviousPage() {
return (--currentPage) >= FIRST_PAGE;
}
private boolean isNotLastPage(int numPages) {
return currentPage != numPages;
}
private boolean isNotFirstPage() {
return currentPage != FIRST_PAGE;
}
}
private class PrintUIWindow implements Printable, ActionListener {
/*
* (non-Javadoc)
*
* #see java.awt.print.Printable#print(java.awt.Graphics,
* java.awt.print.PageFormat, int)
*/
#Override
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
int pagenum = pageIndex+1;
if (pagenum < 1 || pagenum > pdfFile.getNumPages ())
return NO_SUCH_PAGE;
Graphics2D g2d = (Graphics2D) graphics;
AffineTransform at = g2d.getTransform ();
PDFPage pdfPage = pdfFile.getPage (pagenum);
Dimension dim;
dim = pdfPage.getUnstretchedSize ((int) pageFormat.getImageableWidth (),
(int) pageFormat.getImageableHeight (),
pdfPage.getBBox ());
Rectangle bounds = new Rectangle ((int) pageFormat.getImageableX (),
(int) pageFormat.getImageableY (),
dim.width,
dim.height);
PDFRenderer rend = new PDFRenderer (pdfPage, (Graphics2D) graphics, bounds,
null, null);
try
{
pdfPage.waitForFinish ();
rend.run ();
}
catch (InterruptedException ie)
{
//JOptionPane.showMessageDialog (this, ie.getMessage ());
}
g2d.setTransform (at);
g2d.draw (new Rectangle2D.Double (pageFormat.getImageableX (),
pageFormat.getImageableY (),
pageFormat.getImageableWidth (),
pageFormat.getImageableHeight ()));
return PAGE_EXISTS;
}
/*
* (non-Javadoc)
*
* #see
* java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent
* )
*/
#Override
public void actionPerformed(ActionEvent e) {
System.out.println("Inside action performed");
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
try
{
HashPrintRequestAttributeSet attset;
attset = new HashPrintRequestAttributeSet ();
//attset.add (new PageRanges (1, pdfFile.getNumPages ()));
if (printJob.printDialog (attset))
printJob.print (attset);
}
catch (PrinterException pe)
{
//JOptionPane.showMessageDialog (this, pe.getMessage ());
}
}
}
public PagePanel getPagePanel() {
return pagePanel;
}
public void setPDFFile(PDFFile pdfFile) {
this.pdfFile = pdfFile;
currentPage = FIRST_PAGE;
disableAllNavigationButton();
txtGoPage.setText(format(GO_PAGE_TEMPLATE, FIRST_PAGE, pdfFile.getNumPages()));
boolean moreThanOnePage = isMoreThanOnePage(pdfFile);
btnNextPage.setEnabled(moreThanOnePage);
btnLastPage.setEnabled(moreThanOnePage);
}
public static String format(String template, Object... args) {
template = String.valueOf(template); // null -> "null"
// start substituting the arguments into the '%s' placeholders
StringBuilder builder = new StringBuilder(template.length() + 16 * args.length);
int templateStart = 0;
int i = 0;
while (i < args.length) {
int placeholderStart = template.indexOf("%s", templateStart);
if (placeholderStart == -1) {
break;
}
builder.append(template.substring(templateStart, placeholderStart));
builder.append(args[i++]);
templateStart = placeholderStart + 2;
}
builder.append(template.substring(templateStart));
// if we run out of placeholders, append the extra args in square braces
if (i < args.length) {
builder.append(" [");
builder.append(args[i++]);
while (i < args.length) {
builder.append(", ");
builder.append(args[i++]);
}
builder.append(']');
}
return builder.toString();
}
public static void main(String[] args) {
try {
long heapSize = Runtime.getRuntime().totalMemory();
System.out.println("Heap Size = " + heapSize);
JFrame frame = new JFrame("PDF Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// load a pdf from a byte buffer
File file = new File("/home/swarupa/Downloads/2626OS-Chapter-5-Advanced-Theme.pdf");
RandomAccessFile raf = new RandomAccessFile(file, "r");
FileChannel channel = raf.getChannel();
ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
final PDFFile pdffile = new PDFFile(buf);
PdfViewer pdfViewer = new PdfViewer();
pdfViewer.setPDFFile(pdffile);
frame.add(pdfViewer);
frame.pack();
frame.setVisible(true);
PDFPage page = pdffile.getPage(0);
pdfViewer.getPagePanel().showPage(page);
} catch (IOException e) {
e.printStackTrace();
}
}
}
Where i am doing wrong.Can any one point me.
I think, that this should solve your problem ;) You've forgotten to set the window to be visible :)
static class Action1 implements ActionListener {
public void actionPerformed (ActionEvent e) {
JFrame parent = new JFrame();
JDialog jDialog = new JDialog();
Label label = new Label("Enter Word: ");
final JTextField jTextField = new JTextField(100);
JPanel panel = new JPanel();
parent.add(panel);
panel.add(label);
panel.add(jTextField);
parent.setLocationRelativeTo(null);
parent.setVisible(true);
}
}
Btw-why do you create that JDialog?
You create JDialog and JFrame, why? You never call setVisible(true), why?
What you expect from the Action1?
Sorry for posting this answer to your comment as a new post, but it was too long to post it as a comment. You just can't remove close and minimize buttons from JFrame. If you want some window without those buttons, you have to create and customize your own JDialog. Nevertheless there will still be a close button (X). You can make your JDialog undecorated and make it to behave more like JFrame when you implement something like this:
class CustomizedDialog extends JDialog {
public CustomizedDialog(JFrame frame, String str) {
super(frame, str);
super.setUndecorated(true);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
System.exit(0);
}
});
}
}
And then you can call it in your code with this:
CustomizedDialog myCustomizedDialog = new CustomizedDialog(new JFrame(), "My title");
JPanel panel = new JPanel();
panel.setSize(256, 256);
myCustomizedDialog.add(panel);
myCustomizedDialog.setSize(256, 256);
myCustomizedDialog.setLocationRelativeTo(null);
myCustomizedDialog.setVisible(true);
I hope, this helps :)
my question is i want to add full background image if JDialog, this JDialog is created by JOptionPane. This image does not cover full Dialog.
If you have any solution please let me know.
public class BrowseFilePath {
public static final String DIALOG_NAME = "what-dialog";
public static final String PANE_NAME = "what-pane";
private static JDialog loginRegister;
private static String path;
private static JPanel Browse_panel = new JPanel(new BorderLayout());
private static JLabel pathLbl = new JLabel("Please Choose Folder / File");
private static JTextField regtxt_file = new JTextField(30);
private static JButton browse_btn = new JButton("Browse");
private static JButton ok_btn = new JButton("Ok");
private static JButton close_btn = new JButton("Cancel");
/*public static void main(String [] arg){
showFileDialog();
}*/
public static void showFileDialog() {
JOptionPane.setDefaultLocale(null);
JOptionPane pane = new JOptionPane(createRegInputComponent());
pane.setName(PANE_NAME);
loginRegister = pane.createDialog("ShareBLU");
/* try {
loginRegister.setContentPane(new JLabel(new ImageIcon(ImageIO.read(AlertWindow.getBgImgFilePath()))));
} catch (IOException e) {
e.printStackTrace();
}*/
loginRegister.setName(DIALOG_NAME);
loginRegister.setSize(380,150);
loginRegister.setVisible(true);
if(pane.getInputValue().equals("Ok")){
String getTxt = regtxt_file.getText();
BrowseFilePath.setPath(getTxt);
}
else if(pane.getInputValue().equals("Cancel")){
regtxt_file.setText("");
System.out.println("Pressed Cancel Button =======********=");
System.exit(0);
}
}
public static String getPath() {
return path;
}
public static void setPath(String path) {
BrowseFilePath.path = path;
}
private static JComponent createRegInputComponent() {
Browse_panel = new JBackgroundPanel();
Browse_panel.setLayout(new BorderLayout());
Box rows = Box.createVerticalBox();
Browse_panel.setBounds(0,0,380,150);
Browse_panel.add(pathLbl);
pathLbl.setForeground(Color.white);
pathLbl.setBounds(20, 20, 200, 20);
Browse_panel.add(regtxt_file);
regtxt_file.setToolTipText("Select File/Folder..");
regtxt_file.setBounds(20, 40, 220, 20);
Browse_panel.add(browse_btn);
browse_btn.setToolTipText("Browse");
browse_btn.setBounds(250, 40, 90, 20);
Browse_panel.add(ok_btn);
ok_btn.setToolTipText("Ok");
ok_btn.setBounds(40, 75, 80, 20);
Browse_panel.add(close_btn);
close_btn.setToolTipText("Cancel");
close_btn.setBounds(130, 75, 80, 20);
ActionListener chooseMe = createChoiceAction();
ok_btn.addActionListener(chooseMe);
close_btn.addActionListener(chooseMe);
browse_btn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser fileChooser = new JFileChooser();
int selection = JFileChooser.FILES_AND_DIRECTORIES;
fileChooser.setFileSelectionMode(selection);
fileChooser.setAcceptAllFileFilterUsed(false);
int rVal = fileChooser.showOpenDialog(null);
if (rVal == JFileChooser.APPROVE_OPTION) {
path = fileChooser.getSelectedFile().toString();
regtxt_file.setText(path);
}
}
});
rows.add(Box.createVerticalStrut(105));
Browse_panel.add(rows,BorderLayout.CENTER);
return Browse_panel;
}
public static ActionListener createChoiceAction() {
ActionListener chooseMe = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
JButton choice = (JButton) e.getSource();
// find the pane so we can set the choice.
Container parent = choice.getParent();
while (!PANE_NAME.equals(parent.getName())) {
parent = parent.getParent();
}
JOptionPane pane = (JOptionPane) parent;
pane.setInputValue(choice.getText());
// find the dialog so we can close it.
while ((parent != null) && !DIALOG_NAME.equals(parent.getName()))
{
parent = parent.getParent();
//parent.setBounds(0, 0, 350, 150);
}
if (parent != null) {
parent.setVisible(false);
}
}
};
return chooseMe;
}
}
Don't use JOptionPane but use a full-blown JDialog. Set the content pane to a JComponent that overrides paintComponent() and returns an appropriate getPreferredSize().
Example code below:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class TestBackgroundImage {
private static final String BACKHGROUND_IMAGE_URL = "http://cache2.allpostersimages.com/p/LRG/27/2740/AEPND00Z/affiches/blue-fiber-optic-wires-against-black-background.jpg";
protected void initUI() throws MalformedURLException {
JDialog dialog = new JDialog((Frame) null, TestBackgroundImage.class.getSimpleName());
dialog.setModal(true);
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
final ImageIcon backgroundImage = new ImageIcon(new URL(BACKHGROUND_IMAGE_URL));
JPanel mainPanel = new JPanel(new BorderLayout()) {
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(backgroundImage.getImage(), 0, 0, getWidth(), getHeight(), this);
}
#Override
public Dimension getPreferredSize() {
Dimension size = super.getPreferredSize();
size.width = Math.max(backgroundImage.getIconWidth(), size.width);
size.height = Math.max(backgroundImage.getIconHeight(), size.height);
return size;
}
};
mainPanel.add(new JButton("A button"), BorderLayout.WEST);
dialog.add(mainPanel);
dialog.setSize(400, 300);
dialog.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
try {
new TestBackgroundImage().initUI();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
Don't forget to provide an appropriate parent Frame
I'm making a screenshot program so when you press the screenshot button, a JMessageDial pops up and prompts you with your image, it the tells you to drag your mouse and make a box around the area that you want to take a screenshot of. I can't seem to find how to get the image inside the box when the user clicks okay.
So what I need help with is getting the image inside of the rectangle the user "draws" with his mouse, and store that in a variable.
Here is the specific code:
public void selectArea(final BufferedImage screen) throws Exception {
final BufferedImage screenCopy = new BufferedImage(screen.getWidth(), screen.getHeight(), screen.getType());
final JLabel screenLabel = new JLabel(new ImageIcon(screenCopy));
JScrollPane screenScroll = new JScrollPane(screenLabel);
screenScroll.setPreferredSize(new Dimension((int)(screen.getWidth()/2), (int)(screen.getHeight()/2)));
JPanel panel = new JPanel(new BorderLayout());
panel.add(screenScroll, BorderLayout.CENTER);
final JLabel selectionLabel = new JLabel("Draw a rectangle");
panel.add(selectionLabel, BorderLayout.SOUTH);
repaint(screen, screenCopy);
screenLabel.repaint();
screenLabel.addMouseMotionListener(new MouseMotionAdapter() {
#Override
public void mouseMoved(MouseEvent me) {
start = me.getPoint();
repaint(screen, screenCopy);
selectionLabel.setText("Start Point: " + start);
screenLabel.repaint();
}
#Override
public void mouseDragged(MouseEvent me) {
end = me.getPoint();
captureRect = new Rectangle(start, new Dimension(end.x-start.x, end.y-start.y));
try {
paintFinalImage(new BufferedImage((int)screenCopy.getGraphics().getClipBounds(captureRect).getWidth()+1,
(int)screenCopy.getGraphics().getClipBounds(captureRect).getHeight()+1, screen.getType()));
} catch (Exception e) {
e.printStackTrace();
}
repaint(screen, screenCopy);
screenLabel.repaint();
selectionLabel.setText("Rectangle: " + captureRect);
}
});
JOptionPane.showMessageDialog(null, panel, "Select your image", JOptionPane.OK_OPTION, new ImageIcon(""));
uploadImage(screenShot);
System.out.println("Final rectangle: " + screenCopy.getGraphics().getClipBounds(captureRect));
}
And this is the full class if you need it:
package com.screencapture;
import java.awt.*;
public class Main implements ActionListener, ItemListener, KeyListener, NativeKeyListener {
private final Image icon = Toolkit.getDefaultToolkit().getImage("./data/icon.gif");
private final TrayIcon trayIcon = new TrayIcon(icon, "Screen Snapper");
private JFrame frame;
private Rectangle captureRect;
private JComboBox<String> imageType;
private boolean hideWhenMinimized = false;
private final String API_KEY = "b84e430b4a65d16a6955358141f21a61";
private static Robot robot;
private BufferedImage screenShot;
private Point end;
private Point start;
public static void main(String[] args) throws Exception {
robot = new Robot();
new Main().start();
}
public void start() throws Exception {
GlobalScreen.getInstance().registerNativeHook();
GlobalScreen.getInstance().addNativeKeyListener(this);
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
frame = new JFrame("White power!");
frame.setPreferredSize(new Dimension(250, 250));
frame.getContentPane().setLayout(null);
frame.setIconImage(icon);
frame.addKeyListener(this);
frame.addWindowListener(new WindowListener() {
#Override
public void windowOpened(WindowEvent e) {}
#Override
public void windowClosing(WindowEvent e) {}
#Override
public void windowClosed(WindowEvent e) {}
#Override
public void windowIconified(WindowEvent e) {
if (hideWhenMinimized)
frame.setVisible(false);
}
#Override
public void windowDeiconified(WindowEvent e) {}
#Override
public void windowActivated(WindowEvent e) {}
#Override
public void windowDeactivated(WindowEvent e) {}
});
JLabel lblImageType = new JLabel("Image Format:");
lblImageType.setBounds(10, 11, 90, 14);
frame.getContentPane().add(lblImageType);
String[] imageTypes = {"PNG", "JPG"};
imageType = new JComboBox<String>(imageTypes);
imageType.setBounds(106, 8, 51, 20);
frame.getContentPane().add(imageType);
JButton btnTakeScreenShot = new JButton("ScreenShot");
btnTakeScreenShot.setBounds(24, 69, 115, 23);
frame.getContentPane().add(btnTakeScreenShot);
btnTakeScreenShot.addActionListener(this);
setTrayIcon();
frame.pack();
frame.setVisible(true);
}
public void setTrayIcon() throws AWTException {
CheckboxMenuItem startup = new CheckboxMenuItem("Run on start-up");
CheckboxMenuItem hide = new CheckboxMenuItem("Hide when minimized");
String[] popupMenuOptions = {"Open", "Exit"};
if (SystemTray.isSupported()) {
SystemTray tray = SystemTray.getSystemTray();
trayIcon.setImageAutoSize(true);
PopupMenu popupMenu = new PopupMenu();
for (String option : popupMenuOptions) {
if (option == "Exit") {
popupMenu.add(startup);
popupMenu.add(hide);
popupMenu.add(option);
} else {
popupMenu.add(option);
}
}
trayIcon.setPopupMenu(popupMenu);
popupMenu.addActionListener(this);
startup.addItemListener(this);
hide.addItemListener(this);
trayIcon.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
frame.setVisible(true);
}
});
tray.add(trayIcon);
}
}
public void selectArea(final BufferedImage screen) throws Exception {
final BufferedImage screenCopy = new BufferedImage(screen.getWidth(), screen.getHeight(), screen.getType());
final JLabel screenLabel = new JLabel(new ImageIcon(screenCopy));
JScrollPane screenScroll = new JScrollPane(screenLabel);
screenScroll.setPreferredSize(new Dimension((int)(screen.getWidth()/2), (int)(screen.getHeight()/2)));
JPanel panel = new JPanel(new BorderLayout());
panel.add(screenScroll, BorderLayout.CENTER);
final JLabel selectionLabel = new JLabel("Draw a rectangle");
panel.add(selectionLabel, BorderLayout.SOUTH);
repaint(screen, screenCopy);
screenLabel.repaint();
screenLabel.addMouseMotionListener(new MouseMotionAdapter() {
#Override
public void mouseMoved(MouseEvent me) {
start = me.getPoint();
repaint(screen, screenCopy);
selectionLabel.setText("Start Point: " + start);
screenLabel.repaint();
}
#Override
public void mouseDragged(MouseEvent me) {
end = me.getPoint();
captureRect = new Rectangle(start, new Dimension(end.x-start.x, end.y-start.y));
try {
paintFinalImage(new BufferedImage((int)screenCopy.getGraphics().getClipBounds(captureRect).getWidth()+1,
(int)screenCopy.getGraphics().getClipBounds(captureRect).getHeight()+1, screen.getType()));
} catch (Exception e) {
e.printStackTrace();
}
repaint(screen, screenCopy);
screenLabel.repaint();
selectionLabel.setText("Rectangle: " + captureRect);
}
});
JOptionPane.showMessageDialog(null, panel, "Select your image", JOptionPane.OK_OPTION, new ImageIcon(""));
uploadImage(screenShot);
System.out.println("Final rectangle: " + screenCopy.getGraphics().getClipBounds(captureRect));
}
public void paintFinalImage(BufferedImage image) throws Exception {
screenShot = new BufferedImage(image.getWidth(), image.getHeight(), image.getType());
Graphics2D g = screenShot.createGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
}
public void repaint(BufferedImage orig, BufferedImage copy) {
Graphics2D g = copy.createGraphics();
g.drawImage(orig, 0, 0, null);
if (captureRect != null) {
g.setColor(Color.BLACK);
g.draw(captureRect);
}
g.dispose();
}
public void uploadImage(BufferedImage image) throws Exception {
String IMGUR_POST_URI = "http://api.imgur.com/2/upload.xml";
String IMGUR_API_KEY = API_KEY;
String readLine = null;
try {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
ImageIO.write(image, imageType.getSelectedItem().toString(), outputStream);
URL url = new URL(IMGUR_POST_URI);
String data = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(Base64.encodeBase64String(outputStream.toByteArray()).toString(), "UTF-8");
data += "&" + URLEncoder.encode("key", "UTF-8") + "=" + URLEncoder.encode(IMGUR_API_KEY, "UTF-8");
URLConnection urlConnection = url.openConnection();
urlConnection.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(urlConnection.getOutputStream());
wr.write(data);
wr.flush();
InputStream inputStream;
if (((HttpURLConnection) urlConnection).getResponseCode() == 400) {
inputStream = ((HttpURLConnection) urlConnection).getErrorStream();
} else {
inputStream = urlConnection.getInputStream();
}
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
readLine = line;
}
wr.close();
reader.close();
} catch(Exception e){
e.printStackTrace();
}
String URL = readLine.substring(readLine.indexOf("<original>") + 10, readLine.indexOf("</original>"));
System.out.println(URL);
Toolkit.getDefaultToolkit().beep();
StringSelection stringSelection = new StringSelection(URL);
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(stringSelection, null);
}
#Override
public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();
System.out.println(command);
if (command.equalsIgnoreCase("open")) {
frame.setVisible(true);
} else if (command.equalsIgnoreCase("exit")) {
System.exit(-1);
} else if (command.equalsIgnoreCase("screenshot")) {
try {
final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
final BufferedImage screen = robot.createScreenCapture(new Rectangle(screenSize));
selectArea(screen);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
#Override
public void itemStateChanged(ItemEvent e) {
System.out.println(e.getItem() + ", " +e.getStateChange());
String itemChanged = e.getItem().toString();
if (itemChanged.equalsIgnoreCase("run on start-up")) {
//TODO
} else if (itemChanged.equalsIgnoreCase("hide when minimized")) {
if (e.getStateChange() == ItemEvent.DESELECTED) {
hideWhenMinimized = false;
} else if (e.getStateChange() == ItemEvent.SELECTED) {
hideWhenMinimized = true;
}
}
}
#Override
public void keyTyped(KeyEvent e) {
System.out.println("KeyTyped: "+e.getKeyCode());
}
#Override
public void keyPressed(KeyEvent e) {
}
#Override
public void keyReleased(KeyEvent e) {
}
#Override
public void nativeKeyPressed(NativeKeyEvent e) {
}
#Override
public void nativeKeyReleased(NativeKeyEvent e) {
System.out.println("KeyReleased: "+e.getKeyCode());
System.out.println(KeyEvent.getKeyText(e.getKeyCode()));
if (e.getKeyCode() == 154) {
try {
final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
final BufferedImage screen = robot.createScreenCapture(new Rectangle(screenSize));
selectArea(screen);
frame.setVisible(true);
} catch(Exception e1) {
e1.printStackTrace();
}
}
}
#Override
public void nativeKeyTyped(NativeKeyEvent e) {
}
}
I recommend that you simplify your problem to solve it. Create a small compilable and runnable program that doesn't have all the baggage of your current code, but whose only goal is to display an image, and let the user select a sub-portion of that image. Then if your attempt fails, you can post your attempt here, and we can actually both run it, and understand it, and hopefully then be able to fix it.
For example, here's a small bit of compilable and runnable code that uses a MouseListener to select a small section of an image. Perhaps you can get some ideas from it:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;
#SuppressWarnings("serial")
public class ImagePlay extends JPanel {
public static final String IMAGE_PATH = "http://upload.wikimedia.org/wikipedia/" +
"commons/thumb/3/39/European_Common_Frog_Rana_temporaria.jpg/" +
"800px-European_Common_Frog_Rana_temporaria.jpg";
private static final Color RECT_COLOR = new Color(180, 180, 255);
private BufferedImage img = null;
Point p1 = null;
Point p2 = null;
public ImagePlay() {
URL imgUrl;
try {
imgUrl = new URL(IMAGE_PATH);
img = ImageIO.read(imgUrl );
ImageIcon icon = new ImageIcon(img);
JLabel label = new JLabel(icon) {
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
myLabelPaint(g);
}
};
setLayout(new BorderLayout());
add(new JScrollPane(label));
MouseAdapter mAdapter = new MyMouseAdapter();
label.addMouseListener(mAdapter);
label.addMouseMotionListener(mAdapter);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void myLabelPaint(Graphics g) {
if (p1 != null && p2 != null) {
int x = Math.min(p1.x, p2.x);
int y = Math.min(p1.y, p2.y);
int width = Math.abs(p1.x - p2.x);
int height = Math.abs(p1.y - p2.y);
g.setXORMode(Color.DARK_GRAY);
g.setColor(RECT_COLOR);
g.drawRect(x, y, width, height);
}
}
private class MyMouseAdapter extends MouseAdapter {
#Override
public void mousePressed(MouseEvent e) {
p1 = e.getPoint();
p2 = null;
repaint();
}
#Override
public void mouseDragged(MouseEvent e) {
p2 = e.getPoint();
repaint();
}
#Override
public void mouseReleased(MouseEvent e) {
p2 = e.getPoint();
repaint();
int x = Math.min(p1.x, p2.x);
int y = Math.min(p1.y, p2.y);
int width = Math.abs(p1.x - p2.x);
int height = Math.abs(p1.y - p2.y);
BufferedImage smlImg = img.getSubimage(x, y, width, height);
ImageIcon icon = new ImageIcon(smlImg);
JLabel label = new JLabel(icon);
JOptionPane.showMessageDialog(ImagePlay.this, label, "Selected Image",
JOptionPane.PLAIN_MESSAGE);
}
}
private static void createAndShowGui() {
ImagePlay mainPanel = new ImagePlay();
JFrame frame = new JFrame("ImagePlay");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
It uses a publicly available image obtained online, a MouseListener that's added to a JLabel, and the JLabel has its paintComponent(...) method overridden so as to show the guide lines from the MouseListener/Adapter. It creates the sub image via BufferedImage's getSubimage(...) method, and then it displays it in a JOptionPane, but it would be trivial to save the image if desired.
Please have a look at the following code
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
public class Form extends JFrame
{
private JTextPane textPane;
private JLabel results;
private JPanel center,south;
private FlowLayout flow;
private ArrayList array;
private Color color;
private StyledDocument doc;
private Style style, fontSize;
public Form()
{
textPane = new JTextPane();
textPane.setMinimumSize(new Dimension(100,100));
doc = textPane.getStyledDocument();
doc.addDocumentListener(new TextActions());
results = new JLabel("Number of letters: ");
array = new ArrayList();
array.add("public");
array.add("static");
array.add("void");
array.add("private");
array.add("protected");
color = new Color(185,224,247);
//Adding styles
style = doc.addStyle("blue", null);
StyleConstants.setForeground(style, color);
fontSize = doc.addStyle("fontSize", null);
StyleConstants.setFontSize(fontSize, 25);
//Setting the font Size
doc.setCharacterAttributes(0, doc.getLength(), fontSize, false);
center = new JPanel();
flow = new FlowLayout();
center.setLayout(flow);
center.add(textPane);
south = new JPanel();
south.setLayout(new FlowLayout());
south.add(results);
getContentPane().add(textPane,"Center");
getContentPane().add(south,"South");
}
private class TextActions implements DocumentListener
{
#Override
public void insertUpdate(DocumentEvent e)
{
try {
highlighat();
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
#Override
public void removeUpdate(DocumentEvent e)
{
try {
highlighat();
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
#Override
public void changedUpdate(DocumentEvent e)
{
}
}
private void highlighat() throws BadLocationException
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
String text = "";
String content = null;
try {
content = doc.getText(0, doc.getLength()).toLowerCase();
} catch (BadLocationException ex) {
ex.printStackTrace();
}
int last=0;
for(int i=0;i<array.size();i++)
{
text = array.get(i).toString();
if(content.contains(text))
{
while((last=content.indexOf(text,last))!=-1)
{
int end = last+text.length();
doc.setCharacterAttributes(last, end, textPane.getStyle("blue"), true);
last++;
}
}
}
}
}
);
}
public static void main(String[]args)
{
try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch(Exception e)
{
}
Form f = new Form();
f.setVisible(true);
f.setSize(800,600);
f.validate();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
In there, I am also trying to set the font size to 25, but as you can see, it is not working. "textPane.setFont()" also didn't work. How can I set the font size correctly? Please help..
Sure, you can create a font object and use it to set the font of your text pane.
Instantiate it like this:
Font f = new Font(Font.SANS_SERIF, 3, 5);
Maybe this code will help you, about Highlighter and StyledDocument, rest is described in the tutorial about JTextPane / EditorPane