Drawing rotated text revisited.....

Question

Hello again,
I've recently started fiddling with an app that had a method to draw Strings at given Points on a custom JComponent, now I'm trying to extend it to draw the same strings, but throw in an angle should the user choose to do so. But... now here's the part thats foxing me, I want the Point specified to be the center of the String....., i've had a couple of goes, but as soon as the rotation comes in, it goes pair shaped (not literally ;-) , metaphorically).
Here's some of the code I'm working on, feel free to point bad coding and glaringly obvious problems! I'm aware it doesn't quite do "exactly what it says on the tin", but its definitely a step in the right direction. It should work, but it doesn't. Thoughts anyone?
/** Method to draw a text label to a specified graphics context.
     @param g2 The graphics context to draw to.
     @param text The label text to draw.
     @param font The font in which to draw the label.
     @param color The color of the label.
     @param angle The angle at which to draw , 0 = horizontal, 90 = vertical.
     @param position The Point at which to draw the label.*/
public static void drawLabel(Graphics2D g2, String text, Font font, Color color, int angle, Point position)
//get x,y coordinates from Point
int x = new Double(position.getX()).intValue();
int y = new Double(position.getY()).intValue();
//rotate the point by the required angle
x = (new Double((x*Math.cos(Math.toRadians(angle)))-(y*Math.sin(Math.toRadians(angle)))).intValue());
y = (new Double((-x*Math.sin(Math.toRadians(angle)))+(y*Math.cos(Math.toRadians(angle)))).intValue());
// get the current transform
AffineTransform startMatrix = g2.getTransform();
// make a new one...
AffineTransform rotationMatrix = new AffineTransform();
// set the text layout
TextLayout tl = new TextLayout(text,font,g2.getFontRenderContext());
// rotate the shiny new transform
rotationMatrix.rotate(Math.toRadians(angle));
// appy it to g2
g2.transform(rotationMatrix);
//set the color of the label
g2.setPaint(color);
//draw the label
tl.draw(g2,x,y);
//restore the transform for g2
g2.setTransform(startMatrix);
}Also I haven't sorted the drawing relative to the center of the string bit yet, so any advice on how to do this would be great.
Cheers,
Tom

Answer 1

This is straightforward, once you understand transforms. I'm surprised no one's answered this yet. Here's an example:
import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.geom.*;
public class TestRotate extends Frame {
    public static void main(String[] args) {
        new TestRotate().setVisible(true);
    private TestRotate() {
        super("Rotated Text");
        addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    System.exit(0);
        setFont(new Font("default", Font.PLAIN, 24));
        setSize(300, 300);
    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        TextLayout layout = new TextLayout(
            "This is a string to rotate",
            g2d.getFont(),
            g2d.getFontRenderContext());
        Insets ins = getInsets();
        Dimension dim = getSize();
        Point center = new Point(
            ins.left + (dim.width - ins.left - ins.right) / 2,
            ins.top + (dim.height - ins.top - ins.bottom) / 2);
        g2d.translate(center.x, center.y);
        g2d.rotate(Math.PI / 4);
        layout.draw(g2d, -layout.getAdvance() / 2, 0);