pub fn titlebar_height(ui: &Ui<'_>) -> f32Expand description
The height the titlebar strip draws at — what an app laying out its
own strip, or something under it, should read instead of
ui.metrics().titlebar_h. Where the OS keeps controls of its own over
the strip (env.window.native_controls: the macOS traffic lights under
custom chrome) the strip is the OS’s own titlebar, as tall as the
keep-out rect says that titlebar is, so the strip’s content centres on
the buttons the OS centred in it. Everywhere else the strip is the app’s alone and
Metrics::titlebar_h is its height. A keep-out with no height (a host
that reported a width only) falls back to the metric.