Changing color of labels in JFreeChart

Question

Anybody that has experience using JFreeChart, is there a way to change the color of my labels for my XY axes. Right now I'm using a XYPlot and I want to change the color of the labels on my axes. Is there a way to do this?

Acanthocephalan

Answer 1

You should be able to use setTickLabelPaint() on the desired Axis.

Negus

Thank you that answered my question. For anybody else with this problem I got a little stuck with the fact that XYPlot's getDomainAxis() returns a ValueAxis. But I looked at the documentation and realized that Valueaxis is a child class of Axis. – Acanthocephalan

Excellent. One nice feature of JFreeChart is that the API documents are built with the linksource option, so you can navigate by clicking on names. – Negus

Is it possible to change the paint color within one label? E.g. first word of the label in black and the second word in gray? – Pyrology

I seem to recall support for AttributedString, but I've not tried it. – Negus

Answer 2

I used this code to change the color of all my labels:

private void setFontColor(Color fontColor) {
    JFreeChart chart = getChart();
    chart.getTitle().setPaint(fontColor);
    Plot plot = chart.getPlot();
    if (plot instanceof CategoryPlot) {
        setAxisFontColor(((CategoryPlot) plot).getDomainAxis(), fontColor);
        setAxisFontColor(((CategoryPlot) plot).getRangeAxis(), fontColor);
    } else if (plot instanceof XYPlot) {
        setAxisFontColor(((XYPlot) plot).getDomainAxis(), fontColor);
        setAxisFontColor(((XYPlot) plot).getRangeAxis(), fontColor);
    }
}

private void setAxisFontColor(Axis axis, Color fontColor) {
    if (!fontColor.equals(axis.getLabelPaint()))
        axis.setLabelPaint(fontColor);
    if (!fontColor.equals(axis.getTickLabelPaint()))
        axis.setTickLabelPaint(fontColor);
}

If you use subtitles, you need to add them too.

Paraglider