Struct Layer

pub struct Layer { /* private fields */ }

Available on crate features experimental and LayerTree and DOM only.

Information about a compositing layer.

Implementations

impl Layer

pub fn builder() -> LayerBuilder

pub fn layer_id(&self) -> &LayerId

The unique id for this layer.

pub fn parent_layer_id(&self) -> Option<&LayerId>

The id of parent (not present for root).

pub fn backend_node_id(&self) -> Option<&BackendNodeId>

The backend id for the node associated with this layer.

pub fn offset_x(&self) -> f64

Offset from parent layer, X coordinate.

pub fn offset_y(&self) -> f64

Offset from parent layer, Y coordinate.

pub fn width(&self) -> f64

Layer width.

pub fn height(&self) -> f64

Layer height.

pub fn transform(&self) -> Option<&Vec<f64>>

Transformation matrix for layer, default is identity matrix

pub fn anchor_x(&self) -> Option<&f64>

Transform anchor point X, absent if no transform specified

pub fn anchor_y(&self) -> Option<&f64>

Transform anchor point Y, absent if no transform specified

pub fn anchor_z(&self) -> Option<&f64>

Transform anchor point Z, absent if no transform specified

pub fn paint_count(&self) -> u32

Indicates how many time this layer has painted.

pub fn draws_content(&self) -> bool

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

pub fn invisible(&self) -> Option<&bool>

Set if layer is not visible.

pub fn scroll_rects(&self) -> Option<&Vec<ScrollRect>>

Rectangles scrolling on main thread only.

pub fn sticky_position_constraint(&self) -> Option<&StickyPositionConstraint>

Sticky position constraint information

Trait Implementations

impl Clone for Layer

fn clone(&self) -> Layer

Returns a duplicate 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 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.