Struct WindowConfiguration 

pub struct WindowConfiguration {
    pub size: PhysicalSize,
    pub scale_factor: f64,
    pub mode: DisplayMode,
}

What the window system has actually told us about a window.

The three facts arrive together or not at all, which is why they are one struct rather than three fields on WindowState. Every backend delivers them as a single message — Wayland’s xdg_surface.configure, Win32’s WM_DPICHANGED with its suggested rectangle, AppKit’s windowDidChangeBackingProperties — and a consumer that could hold a size from one configure and a scale from another would compute the wrong logical size for exactly one frame, which is the kind of bug that gets closed as “cannot reproduce”.

Fields

size: PhysicalSize

Client area in device pixels — what the swapchain must match.

scale_factor: f64

Device pixels per logical unit for this window.

mode: DisplayMode

The mode actually in effect.

Not necessarily WindowState::requested_mode: a compositor may refuse a fullscreen request, and a tiling window manager makes the whole question moot. This is the answer, that is the question.

Trait Implementations

impl Clone for WindowConfiguration

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WindowConfiguration

impl Debug for WindowConfiguration

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for WindowConfiguration

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for WindowConfiguration