Paint another component in paintComponent

Question

I use SwingPaintDemo2 from Java Tutorials:

http://download.oracle.com/javase/tutorial/uiswing/examples/painting/SwingPaintDemo2Project/src/painting/SwingPaintDemo2.java

I modified it like this:

public void paintComponent(Graphics g) {
    super.paintComponent(g);

    // Draw Text
    g.drawString("This is my custom Panel!",10,20);

    JLabel c = new JLabel("Label");
    c.paint(g);
}

g.drawString works fine. But how can I paint JLabel from this method? It doesn't work.

score 4 · Accepted Answer · answered Jul 20 '11 at 10:08

4

I think you have to set a size to your label.

public void paintComponent(Graphics g) {
    super.paintComponent(g);

    // Draw Text
    g.drawString("This is my custom Panel!",10,20);

    JLabel c = new JLabel("Label");
    c.setBounds(0, 0, 400, 30);
    c.paint(g);
}

answered Jul 20 '11 at 10:08

Martijn Courteaux

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You should try to avoid clobbering the passed `Graphics` object. Instead, use a copy `Graphics gCopy = g.create()`. – Moonbeam Jul 20 '11 at 12:02
c.setBounds - I haven't even thought about it. Thank you! – Dmitry D Jul 20 '11 at 12:46

score 4 · Answer 2 · edited May 23 '17 at 11:47

4

See the LabelRenderTest.java source on this thread. The label is eventually drawn to screen, but it is painted to BufferedImage before ever being displayed.

The important line of the source is..

textLabel.setSize(textLabel.getPreferredSize());

edited May 23 '17 at 11:47

Community

1
1

answered Jul 20 '11 at 10:20

Andrew Thompson

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your Examples & Html & Images together +1 – mKorbel Jul 20 '11 at 11:01
@mKorbel 'An image paints a thousand words' ( and gets a few up-votes, usually :). HTML is just because I could not be bothered figuring the exact position of every text element. ;) – Andrew Thompson Jul 20 '11 at 11:23
I can't to take as your personal attack to my excellent, exciting un-interchangeable, whatever ... form of my English speak :-), as I read some yours edits (or by other NativeSpeakers) then somebody someone must died by laughing :-) – mKorbel Jul 20 '11 at 11:32

Paint another component in paintComponent

2 Answers2