Struct PropertyState 

pub struct PropertyState {
    pub transform_x: f32,
    pub transform_y: f32,
    pub clip: Option<Rect>,
    pub opacity: f32,
}

The visual property state affecting a group of display items.

Chrome equivalent: PropertyTreeState. Adjacent display items sharing the same PropertyState are grouped into a PaintChunk.

Future

When compositing is added, this will reference nodes in separate transform/clip/effect property trees for incremental updates.

Fields

transform_x: f32

Cumulative transform (translation only for now). Chrome: reference to TransformPaintPropertyNode.

transform_y: f32

clip: Option<Rect>

Current clip rectangle. None = no clip. Chrome: reference to ClipPaintPropertyNode.

opacity: f32

Current opacity (1.0 = fully opaque). Chrome: reference to EffectPaintPropertyNode.

Implementations

impl PropertyState

pub fn root() -> Self

Create a root property state (no transform, no clip, full opacity).

pub fn is_identity(&self) -> bool

Whether this state is the identity (no visual effects applied).

Trait Implementations

impl Clone for PropertyState

fn clone(&self) -> PropertyState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PropertyState

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

Formats the value using the given formatter.

impl Default for PropertyState

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PropertyState

fn eq(&self, other: &PropertyState) -> 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 StructuralPartialEq for PropertyState