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Clarify scale_factor docs

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Wayland scales each window individually, thus make it clear. Also
recommend against using the `MonitorHandle::scale_factor`.

Fixes #3183.
This commit is contained in:
Kirill Chibisov 2023-10-28 14:23:20 +04:00 • committed by GitHub
parent 92b7dcccc1
commit 075dfcea19
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3 changed files with 13 additions and 5 deletions
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6
src/monitor.rs
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@ -138,14 +138,18 @@ impl MonitorHandle {
self.inner.refresh_rate_millihertz()
}
/// Returns the scale factor that can be used to map logical pixels to physical pixels, and vice versa.
/// Returns the scale factor of the underlying monitor. To map logical pixels to physical
/// pixels and vice versa, use [`Window::scale_factor`].
///
/// See the [`dpi`](crate::dpi) module for more information.
///
/// ## Platform-specific
///
/// - **X11:** Can be overridden using the `WINIT_X11_SCALE_FACTOR` environment variable.
/// - **Wayland:** May differ from [`Window::scale_factor`].
/// - **Android:** Always returns 1.0.
///
/// [`Window::scale_factor`]: crate::window::Window::scale_factor
#[inline]
pub fn scale_factor(&self) -> f64 {
self.inner.scale_factor()