Java - repaint(x, y, w, h) doesn't call paintComponent? (with SSCCE)

Question

I asked this before, but only theoretically, without an SSCCE. Now, I\'ve created one, and the problem persists. I\'d like to know why paintComponent is not calle

Answer 1

You're calling this

repaint(TLabel.this.getBounds());

inside of the TLabel object. So repaint will try to paint a rectangle located relative to itself at the Bounds location, but getBounds() returns a rectangle located relative to this components containing object's location while repaint expects bounds relative to the component itself. So you're trying to paint a rectangle that has the width and height of your JLabel but which is located at x = 292 and y = 5 relative to the JLabel, when instead you want x and y to both be 0. In essence you're trying to draw way outside of this component.

Instead try this:

        //!! repaint(TLabel.this.getBounds());
        Dimension d = TLabel.this.getSize();
        repaint(new Rectangle(0, 0, d.width, d.height));