Enum Unsupported 

#[non_exhaustive]
pub enum Unsupported {
    Filter,
    Mask,
    Text,
    Pattern,
    OffsetFocalGradient,
    BlendMode,
    ImageFormat,
}

Available on crate feature svg-import only.

A construct in the source SVG that PDF drawing cannot carry.

An enum rather than a message string: a caller that wants to refuse a filter but tolerate a dropped <text> matches on the variant, and adding a case makes every such match fail to compile.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Filter

An SVG filter primitive chain — filter="url(#…)".

PDF has no filter model. The only faithful rendering would be to rasterize the filtered subtree, which is exactly the blurry result ingesting an SVG as vectors exists to avoid, so the subtree is drawn unfiltered and the loss is reported.

Mask

A <mask> on a group.

A PDF soft mask is expressible, but only through a /SMask luminosity group whose own content is a second form — a whole second compilation path. The group is drawn unmasked and reported.

Text

A <text> element.

usvg is taken with --no-default-features, which drops its text stack entirely. Text elements therefore never reach the tree at all, so this is raised from the source XML rather than from the walk, and it is the one variant that carries no element id.

Pattern

A <pattern> fill or stroke.

A PDF tiling pattern is expressible and is future work; today the shape is filled with the pattern’s average is not attempted at all — the shape is skipped and reported, because a wrong colour is a worse answer than a reported gap.

OffsetFocalGradient

A radial gradient whose focal point is offset from its centre, or whose focal radius is non-zero.

PDF’s type 3 shading has a focal circle too, so the geometry maps; what does not map is SVG’s clamping of a focus that falls outside the end circle. Rather than emit a shading that diverges from the source where it matters most, the gradient is drawn as its own type 3 shading with the focus moved to the centre, and the difference is reported.

BlendMode

A blend mode other than normal on a group.

PDF has the same separable and non-separable blend modes, but setting one meaningfully requires a transparency group /XObject around the subtree rather than a bare /ExtGState. The subtree is drawn with normal blending and reported.

ImageFormat

A raster <image> in a format this build cannot decode into an embedded PDF image: GIF or WebP.

PNG and JPEG both map — JPEG passes through as /DCTDecode and PNG is decoded to samples. The other two would need a decoder this crate does not carry, so the image is skipped and reported.

Implementations

impl Unsupported

pub const fn name(self) -> &'static str

A short, stable name for logs and reports.

use pdfrum::Unsupported;

assert_eq!(Unsupported::Filter.name(), "filter");

pub const fn is_dropped(self) -> bool

Whether the construct was dropped rather than approximated.

The distinction a caller acts on: a dropped <text> or <pattern> leaves a visible hole, while an unfiltered group or a recentred focal gradient still draws something close. A caller that will accept an approximation but not a hole tests this.

use pdfrum::Unsupported;

assert!(Unsupported::Text.is_dropped());
assert!(!Unsupported::Filter.is_dropped());

Trait Implementations

impl Clone for Unsupported

fn clone(&self) -> Unsupported

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Unsupported

impl Debug for Unsupported

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

Formats the value using the given formatter.

impl Eq for Unsupported

impl Hash for Unsupported

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Unsupported

fn cmp(&self, other: &Unsupported) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Unsupported

fn eq(&self, other: &Unsupported) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for Unsupported

fn partial_cmp(&self, other: &Unsupported) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Unsupported