Enum atspi_common::Layer

pub enum Layer {
    Invalid,
    Background,
    Canvas,
    Widget,
    Mdi,
    Popup,
    Overlay,
    Window,
}

Indicates relative stacking order of a atspi_proxies::component::ComponentProxy with respect to the onscreen visual representation of the UI.

The layer index, in combination with the component’s extents, can be used to compute the visibility of all or part of a component. This is important in programmatic determination of region-of-interest for magnification, and in flat screen review models of the screen, as well as for other uses. Objects residing in two of the Layer categories support further z-ordering information, with respect to their peers in the same layer: namely, Layer::Window and Layer::Mdi. Relative stacking order for other objects within the same layer is not available; the recommended heuristic is first child paints first. In other words, assume that the first siblings in the child list are subject to being overpainted by later siblings if their bounds intersect.

Variants

Invalid

Indicates an error condition or uninitialized value.

Background

Reserved for the desktop background; this is the bottom-most layer, over which everything else is painted.

Canvas

The ‘background’ layer for most content renderers and UI atspi_proxies::component::ComponentProxy containers.

Widget

The layer in which the majority of ordinary ‘foreground’ widgets reside.

Mdi

A special layer between Layer::Canvas and Layer::Widget, in which the ‘pseudo windows’ (e.g. the Multiple-Document Interface frames) reside.

See atspi_proxies::component::ComponentProxy::get_mdizorder.

Popup

A layer for popup window content, above Layer::Widget.

Overlay

The topmost layer.

Window

The layer in which a toplevel window background usually resides.

Trait Implementations

impl Clone for Layer

fn clone(&self) -> Layer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Layer

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Layer

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Layer

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Layer

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Type for Layer

fn signature() -> Signature<'static>

Get the signature for the implementing type.

impl Copy for Layer

impl Eq for Layer

impl StructuralPartialEq for Layer