Re: Graphics2D in a DefaultStyleDocument

"John B. Matthews" <nospam@nospam.invalid>
Sat, 20 Feb 2010 14:18:17 -0500
In article <CGEfn.834$sx5.509@newsfe16.iad>,
 Daniel Pitts <> wrote:

On 2/19/2010 10:45 AM, John B. Matthews wrote:

In article
  Elliot<> wrote:

I currently use a lot of code to parse and print a multi-page
document with a lot of Graphics2D objects. I need to display the
same document in a JTextPane. I would like to create a new class
that could be used by either the repaginate() and print() routines
for the print job or by a new paint() routine for the Swing

I would like to add the Graphics2D objects to a
DefaultStyledDocument and then add the styled document to a
JTextPane. I think this would be the fastest way to draw
everything. First, is it possible to add paint graphic 2d on a

Second, I do not want to duplicate any of the existing complex
parsing code for the print job. I need to figure out how to create
a new class containing this logic that could be used by either the
current repaginate() and print() methods or new paint() method.

Any ideas would be really welcome.

If a Graphics2D instance is associated with a Component you can use
the insertComponent() method of JTextPane:



If it's a BufferedImage, you can wrap it in a JComponent and
override the paintComponent() method to call drawImage().

Or use a JLabel with an ImageIcon, instead of writing custom
paintComponent :-)

Even better!

Somewhere between the two approaches, I like to implement the Icon
interface. As an example, here's a handy component for seeing the
effect of various layout managers:

 * A label having an icon showing the icon's center.
 * @author John B. Matthews
private static class SizeLabel extends JLabel implements Icon {

    private static final Font FONT =
        new Font("Serif", Font.PLAIN, 16);
    private static final int WIDE = 72;
    private static final int HIGH = 24;

    public SizeLabel() {
            new Dimension(4 * WIDE / 3, 8 * HIGH / 3));

    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.fillRect(x, y, WIDE, HIGH);
        int x2 = x + WIDE / 2;
        int y2 = y + HIGH / 2;
        String s = "(" + x2 + ", " + y2 + ")";
        int w2 = g.getFontMetrics().stringWidth(s) / 2;
        int h2 = g.getFontMetrics().getDescent() + 1;
        g.drawString(s, x2 - w2, y2 + h2);

    public int getIconWidth() {
        return WIDE;

    public int getIconHeight() {
        return HIGH;

John B. Matthews
trashgod at gmail dot com

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