Struct webrender::spatial_tree::TransformUpdateState

pub struct TransformUpdateState {
    pub parent_reference_frame_transform: FastTransform<LayoutPixel, WorldPixel>,
    pub parent_accumulated_scroll_offset: LayoutVector2D,
    pub nearest_scrolling_ancestor_offset: LayoutVector2D,
    pub nearest_scrolling_ancestor_viewport: LayoutRect,
    pub current_coordinate_system_id: CoordinateSystemId,
    pub coordinate_system_relative_scale_offset: ScaleOffset,
    pub invertible: bool,
    pub preserves_3d: bool,
    pub is_ancestor_or_self_zooming: bool,
    pub external_id: Option<ExternalScrollId>,
    pub scroll_offset: LayoutVector2D,
}

Fields

parent_reference_frame_transform: FastTransform<LayoutPixel, WorldPixel>

parent_accumulated_scroll_offset: LayoutVector2D

nearest_scrolling_ancestor_offset: LayoutVector2D

nearest_scrolling_ancestor_viewport: LayoutRect

current_coordinate_system_id: CoordinateSystemId

An id for keeping track of the axis-aligned space of this node. This is used in order to to track what kinds of clip optimizations can be done for a particular display list item, since optimizations can usually only be done among coordinate systems which are relatively axis aligned.

coordinate_system_relative_scale_offset: ScaleOffset

Scale and offset from the coordinate system that started this compatible coordinate system.

invertible: bool

True if this node is transformed by an invertible transform. If not, display items transformed by this node will not be displayed and display items not transformed by this node will not be clipped by clips that are transformed by this node.

preserves_3d: bool

True if this node is a part of Preserve3D hierarchy.

is_ancestor_or_self_zooming: bool

True if the any parent nodes are currently zooming

external_id: Option<ExternalScrollId>

Set to true if this state represents a scroll node with external id

scroll_offset: LayoutVector2D

The node scroll offset if this state is a scroll/sticky node. Zero if a reference frame.

Trait Implementations

impl Clone for TransformUpdateState

fn clone(&self) -> TransformUpdateState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Serialize for TransformUpdateState

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

where __S: Serializer,

Serialize this value into the given Serde serializer.