Getting Font In JDialog Titlepane

[Isaac Hewitt]

I need to access the Font in the TitlePane of my JDialog so as to measure the text in pixels as it increases after setText() method, in case it gets longer than the width of the Titlepane in which case I can resize the width of the JDialog programatically. There is not getFont() method for getTitle() method of JDialog.

         this.file = new java.io.File(this.fileName);
         String s = "";
       
         if(this.file.isFile()) {
             
            s = ProgramUtilities.getFileExtension(this.fileName);
            this.fileNameBox.addKeyListener(new BoxListener(s, true));
    
        } else {
             
            s = this.fileName.substring(0, this.fileName.lastIndexOf("\\") + 1);
            this.fileNameBox.addKeyListener(new BoxListener(s, false));
             
         }

  private class BoxListener implements KeyListener {
        private final StringBuilder b = new StringBuilder();
        private boolean file;
        private String s;
     
      BoxListener(String s, boolean f) {
            this.file = f;
            this.s = s;
        }

        @Override
        public void keyTyped(KeyEvent e) {
             EventQueue.invokeLater(new Runnable() {
                    @Override
                    public void run() {
                      if(BoxListener.this.file) {
                        BoxListener.this.b.append(FSTreeRenameBox.this.fileNameBox.getText());
                        BoxListener.this.b.append(BoxListener.this.s);


                      >>>>>>>   FontMetrics metrics = graphics.getFontMetrics(font);   >>>>>>>>>>> NEED TO GET FONT HERE
                       
                    } else {
                        BoxListener.this.b.append(BoxListener.this.s);
                        BoxListener.this.b.append(FSTreeRenameBox.this.fileNameBox.getText());   
                    }
                      
                      
                        FSTreeRenameBox.this.setTitle(BoxListener.this.b.toString());
                        FSTreeRenameBox.this.repaint();
                    }
                });

                this.b.delete(0, this.b.length());
        }

        @Override
        public void keyPressed(KeyEvent e) {}

        @Override
        public void keyReleased(KeyEvent e) {}
      
      
      
  }

[Darryl Burke]

Windows only: Toolkit#getDesktopProperty("win.frame.captionFont")

From Windows Desktop Property Support.

edit Or use the LaF decorations. See Resize JDialog to fit dialog title

[Isaac Hewitt]

Wow Darryl! Thank you so much for your help. I really appreciate it. This works alright.

                       Font f = (Font)Toolkit.getDefaultToolkit().getDesktopProperty("win.frame.captionFont");
                       Graphics gr = getGraphics();
                       FontMetrics metrics = gr.getFontMetrics(f);
                       int width = metrics.stringWidth(fileNameBox.getText());

                       System.out.println(width);

[Darryl Burke]

You're welcome. This isn't a new question (are there any?), just a new twist on an old one.
Keeping a JDialog Title Centered.

[Isaac Hewitt]

Thanks for this too.

I am using 3 of the many Look And Feel classes available with a Synthetica license (which I highly recommend) and all 3 of these display the text in the centre of the JDialog title pane which I think is more elegant.

I will have a look at your link nevertheless, and I am sure I can learn something new from that.

http://www.jyloo.com

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