Can I change the text color in my legend to match the curve color?

[AwareWolf]

Using Qt 4.6.0 and qwt 5.2.0

I want the text in my legend to match the color of the curve it represents. Is there a way to do that?

[Uwe]

The text of the legend is copied from the curve title. If you assign a color to the title (QwtText::setColor) I would expect to see it on the legend as well.

Uwe

[AwareWolf]

Yup, that did it, thanks. How about changing the background color of the legend? I've tried setPalette() on the legend, but this didn't have any effect.

[Uwe]

The legend is a container widget around a scrollview, that contains another containter widget (QwtLegend::contentsWidget()), with the legend item widgets inside.

If you want to find the legend item widget, that corresponds to a specific plot item ( f.e for assigning the color of the curve to its palette ) you can use QwtLegend::find ( QwtPlotItem is derived from QwtLegendItemManager ). Overloading QwtPlotItem::updateLegend() is the place to do this.

If you want to have your own type of widget (instead of QwtLegendItem) to be displayed on the legend, implement YourCurve::legendItem() and YourCurve::updateLegend().

Uwe

PS: Qwt is open source - why not looking into the code to identify the internal widget trees.