Re: Draw text on top of both canvas and plot background?

[Elvis S. <elv...@or...>]

Den tis 12 mars 2019 kl 09:09 skrev Uwe Rathmann <Uwe...@ti...>:
>
> Hi Elvis,
>
> > Hope that makes it more clear.
>
> That doesn't answer my question, but maybe all you want to do is:
>
> class YourScaleDraw : public QwtScaleDraw
> {
>      ....
>
>      QwtText label( double value ) const override
>      {
>          auto txt = QLocale().toString( value );
>
>          const auto ticks = scaleDiv().ticks[ QwtScaleDiv::MajorTick ];
>          if ( !ticks.empty() && value == ticks.last() )
>          {
>              txt += "\nUnit";

I completely missed the (very crucial) "\n" here Uwe! I will try that.
It will add to the total height of the top axis, which is what I was
hoping to avoid, but may be good enough. Thanks!

In my use case, horizontal space is at a premium (many side-by-side
plots), but I do have vertical space to spare.

Elvis

>          }
>
>          return txt;
>      }
> };
>
> plot->setAxisScaleDraw( QwtPlot::xTop, new YourScaleDraw() );
>
> Uwe