Vertical JLable

[Derrick Albers]

I have some code that uses VerticalUI to create a vertical JLabel. The code works great after the program is running and you replace the panel with the JLabel, but before that replace the JLabel text is normal, the UI's paint method is not called when the JLabel is created. How can I force a paint() or create a JLabel with vertical text that will show the text vertical from the beginning, I have tried calling paint(this.getGraphics,this) and the graphics object is always null???
Label Code:

import com.ti.livedoc.util.VerticalLabelUI;

import java.awt.Color;
import javax.swing.JLabel;
import javax.swing.SwingConstants;

public class VerticalJLabel extends JLabel {
    public VerticalJLabel() {
        super();
        init();
    }
    
    public void init(){
      this.setUI(new VerticalLabelUI(false));
      this.setOpaque(true);
      this.setBackground(Color.WHITE);
      this.setAlignmentY(SwingConstants.CENTER);
      this.setVerticalAlignment(SwingConstants.CENTER);
      this.setVerticalTextPosition(SwingConstants.CENTER);
      this.setHorizontalTextPosition(SwingConstants.CENTER);
      this.setHorizontalAlignment(SwingConstants.CENTER);
      
    }
}

VerticalUI code:

import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.plaf.basic.BasicLabelUI;

public class VerticalLabelUI extends BasicLabelUI{
	static {
		labelUI = new VerticalLabelUI(false);
	}
	
	protected boolean clockwise;
	public VerticalLabelUI( boolean clockwise )
	{
		super();
		this.clockwise = clockwise;
	}
    

    public Dimension getPreferredSize(JComponent c) 
    {
    	Dimension dim = super.getPreferredSize(c);
    	return new Dimension( dim.height, dim.width );
    }	

    private static Rectangle paintIconR = new Rectangle();
    private static Rectangle paintTextR = new Rectangle();
    private static Rectangle paintViewR = new Rectangle();
    private static Insets paintViewInsets = new Insets(0, 0, 0, 0);

    public void paint(Graphics g, JComponent c) {

    	
        JLabel label = (JLabel)c;
        String text = label.getText();
        Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();

        if ((icon == null) && (text == null)) {
            return;
        }
        FontMetrics fm = g.getFontMetrics();
        
        paintViewInsets = c.getInsets(paintViewInsets);

        paintViewR.x = paintViewInsets.left;
        paintViewR.y = paintViewInsets.top;
    	
    	// Use inverted height & width
        paintViewR.height = c.getWidth() - (paintViewInsets.left + paintViewInsets.right);
        paintViewR.width = c.getHeight() - (paintViewInsets.top + paintViewInsets.bottom);

        paintIconR.x = paintIconR.y = paintIconR.width = paintIconR.height = 0;
        paintTextR.x = paintTextR.y = paintTextR.width = paintTextR.height = 0;

        String clippedText = 
            layoutCL(label, fm, text, icon, paintViewR, paintIconR, paintTextR);

    	Graphics2D g2 = (Graphics2D) g;
    	AffineTransform tr = g2.getTransform();
      if( clockwise ){
	    	g2.rotate( Math.PI / 2 ); 
    		g2.translate( 0, - c.getWidth() );
    	}
      else{
	    	g2.rotate( - Math.PI / 2 ); 
    		g2.translate( - c.getHeight(), 0 );
    	}

    	if (icon != null) {
            icon.paintIcon(c, g, paintIconR.x, paintIconR.y);
        }

        if (text != null) {
            int textX = paintTextR.x;
            int textY = paintTextR.y + fm.getAscent();

            if (label.isEnabled()) {
                paintEnabledText(label, g, clippedText, textX, textY);
            }
            else {
                paintDisabledText(label, g, clippedText, textX, textY);
            }
        }
    	
    	
    	g2.setTransform( tr );
  }
}

[Rob Camick]

You didn't post your simple test program that actually creates and displays the label.

[Derrick Albers]

It is a lot of code is why.

[Rob Camick]

I didn't ask for your real application. I asked for a test frame. Its called a SSCCE.

It takes about 4 lines of code to create a JFrame. Another couple of lines of code to add a JLabel to it.