Struct webrender_api::display_item::ScrollFrameDescriptor

pub struct ScrollFrameDescriptor {
    pub scroll_frame_id: SpatialId,
    pub content_rect: LayoutRect,
    pub frame_rect: LayoutRect,
    pub parent_space: SpatialId,
    pub external_id: ExternalScrollId,
    pub external_scroll_offset: LayoutVector2D,
    pub scroll_offset_generation: APZScrollGeneration,
    pub has_scroll_linked_effect: HasScrollLinkedEffect,
    pub key: SpatialTreeItemKey,
}

Fields

scroll_frame_id: SpatialId

The id of the space this scroll frame creates

content_rect: LayoutRect

The size of the contents this contains (so the backend knows how far it can scroll).

frame_rect: LayoutRect

parent_space: SpatialId

external_id: ExternalScrollId

external_scroll_offset: LayoutVector2D

The amount this scrollframe has already been scrolled by, in the caller. This means that all the display items that are inside the scrollframe will have their coordinates shifted by this amount, and this offset should be added to those display item coordinates in order to get a normalized value that is consistent across display lists.

scroll_offset_generation: APZScrollGeneration

The generation of the external_scroll_offset.

has_scroll_linked_effect: HasScrollLinkedEffect

Whether this scrollframe document has any scroll-linked effect or not.

key: SpatialTreeItemKey

A unique (per-pipeline) key for this spatial that is stable across display lists.

Trait Implementations

impl Clone for ScrollFrameDescriptor

fn clone(&self) -> ScrollFrameDescriptor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollFrameDescriptor

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

Formats the value using the given formatter.

impl Default for ScrollFrameDescriptor

fn default() -> ScrollFrameDescriptor

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScrollFrameDescriptor

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ScrollFrameDescriptor

fn eq(&self, other: &ScrollFrameDescriptor) -> 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 Peek for ScrollFrameDescriptor

unsafe fn peek_from(bytes: *const u8, output: *mut Self) -> *const u8

Deserialize from the buffer pointed to by bytes.

impl Poke for ScrollFrameDescriptor

fn max_size() -> usize

Return the maximum number of bytes that the serialized version of Self will occupy.

unsafe fn poke_into(&self, bytes: *mut u8) -> *mut u8

Serialize into the buffer pointed to by bytes.

impl Serialize for ScrollFrameDescriptor

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ScrollFrameDescriptor

impl StructuralPartialEq for ScrollFrameDescriptor