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PageObject

Enum PageObject 

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pub enum PageObject<'a> {
    Char(&'a Char),
    Line(&'a Line),
    Rect(&'a Rect),
    Curve(&'a Curve),
    Image(&'a Image),
}
Expand description

An enum wrapping references to different page object types.

Used as the argument to filter predicates, allowing users to match on specific object types and inspect their properties.

§Example

// Keep only characters with font "Helvetica" and all non-char objects
page.filter(|obj| match obj {
    PageObject::Char(c) => c.fontname == "Helvetica",
    _ => true,
});

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Char(&'a Char)

A character object.

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Line(&'a Line)

A line object.

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Rect(&'a Rect)

A rectangle object.

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Curve(&'a Curve)

A curve object.

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Image(&'a Image)

An image object.

Auto Trait Implementations§

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impl<'a> Freeze for PageObject<'a>

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impl<'a> RefUnwindSafe for PageObject<'a>

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impl<'a> Send for PageObject<'a>

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impl<'a> Sync for PageObject<'a>

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impl<'a> Unpin for PageObject<'a>

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impl<'a> UnsafeUnpin for PageObject<'a>

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impl<'a> UnwindSafe for PageObject<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.