Struct Layer

pub struct Layer {

    pub layer_id: LayerId,
    pub parent_layer_id: Option<LayerId>,
    pub backend_node_id: Option<BackendNodeId>,
    pub offset_x: f64,
    pub offset_y: f64,
    pub width: f64,
    pub height: f64,
    pub transform: Option<Vec<f64>>,
    pub anchor_x: Option<f64>,
    pub anchor_y: Option<f64>,
    pub anchor_z: Option<f64>,
    pub paint_count: i64,
    pub draws_content: bool,
    pub invisible: Option<bool>,
    pub scroll_rects: Option<Vec<ScrollRect>>,
    pub sticky_position_constraint: Option<StickyPositionConstraint>,
}

Information about a compositing layer. Layer

Fields

layer_id: LayerId

The unique id for this layer.

parent_layer_id: Option<LayerId>

The id of parent (not present for root).

backend_node_id: Option<BackendNodeId>

The backend id for the node associated with this layer.

offset_x: f64

Offset from parent layer, X coordinate.

offset_y: f64

Offset from parent layer, Y coordinate.

width: f64

Layer width.

height: f64

Layer height.

transform: Option<Vec<f64>>

Transformation matrix for layer, default is identity matrix

anchor_x: Option<f64>

Transform anchor point X, absent if no transform specified

anchor_y: Option<f64>

Transform anchor point Y, absent if no transform specified

anchor_z: Option<f64>

Transform anchor point Z, absent if no transform specified

paint_count: i64

Indicates how many time this layer has painted.

draws_content: bool

Indicates whether this layer hosts any content, rather than being used for transform/scrolling purposes only.

invisible: Option<bool>

Set if layer is not visible.

scroll_rects: Option<Vec<ScrollRect>>

Rectangles scrolling on main thread only.

sticky_position_constraint: Option<StickyPositionConstraint>

Sticky position constraint information

Implementations

impl Layer

pub fn builder() -> LayerBuilder

impl Layer

pub const IDENTIFIER: &'static str = "LayerTree.Layer"

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<(), Error>

Formats the value using the given formatter.

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

fn deserialize<__D>( __deserializer: __D, ) -> Result<Layer, <__D as Deserializer<'de>>::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 as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Layer