Struct SoftMask 

pub struct SoftMask {
    pub mask_list: DisplayList,
    pub subtype: SoftMaskSubtype,
    pub bbox: [f64; 4],
    pub backdrop_color: Option<[f64; 3]>,
    pub transfer_invert: bool,
    pub has_nested_mask_scope: bool,
}

A resolved soft mask from ExtGState /SMask.

Fields

mask_list: DisplayList

Pre-rendered mask form display list.

subtype: SoftMaskSubtype

How to extract the mask (alpha or luminosity).

bbox: [f64; 4]

Device-space bounding box.

backdrop_color: Option<[f64; 3]>

Backdrop color for luminosity masks (RGB, 0.0–1.0).

transfer_invert: bool

Whether the mask values should be inverted (from /TR {1 exch sub}).

has_nested_mask_scope: bool

Whether the mask form contained nested soft mask scopes (gs-set SMask inside the form that was flushed). When true, the renderer must composite semi-transparent pixels onto the backdrop before extracting luminosity, since the alpha encodes mask modulation from nested masks.

Trait Implementations

impl Clone for SoftMask

fn clone(&self) -> SoftMask

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SoftMask

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

Formats the value using the given formatter.