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e13cc69d76
Added a public API in `egui_plot -> legend` to allow `hidden_items` to
be overridden in the plot legend widget. This allows convenient control
of traces' visibilities the selection of traces from the application
code.
### Example
```rust
let legend_config = if plot_selection_changed {
let hidden_items = match plot_selection {
PlotSelection::SelectAll => Vec::new(),
PlotSelection::DeselectAll => all_trace_names,
};
Legend::default()
.position(Corner::RightTop)
.hidden_items(hidden_items) // Overrides `hidden_items`
} else {
Legend::default().position(Corner::RightTop)
};
Plot::new(id)
.legend(legend_config)
.show(ui, draw_plot);
```
Closes <https://github.com/emilk/egui/issues/3533>.
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>