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|
//! Extension traits.
use crate::layout::{AlignElem, MoveElem, PadElem};
use crate::prelude::*;
use crate::text::{EmphElem, FontFamily, FontList, StrongElem, TextElem, UnderlineElem};
/// Additional methods on content.
pub trait ContentExt {
/// Make this content strong.
fn strong(self) -> Self;
/// Make this content emphasized.
fn emph(self) -> Self;
/// Underline this content.
fn underlined(self) -> Self;
/// Link the content somewhere.
fn linked(self, dest: Destination) -> Self;
/// Set alignments for this content.
fn aligned(self, aligns: Axes<Option<GenAlign>>) -> Self;
/// Pad this content at the sides.
fn padded(self, padding: Sides<Rel<Length>>) -> Self;
/// Transform this content's contents without affecting layout.
fn moved(self, delta: Axes<Rel<Length>>) -> Self;
}
impl ContentExt for Content {
fn strong(self) -> Self {
StrongElem::new(self).pack()
}
fn emph(self) -> Self {
EmphElem::new(self).pack()
}
fn underlined(self) -> Self {
UnderlineElem::new(self).pack()
}
fn linked(self, dest: Destination) -> Self {
self.styled(MetaElem::set_data(vec![Meta::Link(dest)]))
}
fn aligned(self, aligns: Axes<Option<GenAlign>>) -> Self {
self.styled(AlignElem::set_alignment(aligns))
}
fn padded(self, padding: Sides<Rel<Length>>) -> Self {
PadElem::new(self)
.with_left(padding.left)
.with_top(padding.top)
.with_right(padding.right)
.with_bottom(padding.bottom)
.pack()
}
fn moved(self, delta: Axes<Rel<Length>>) -> Self {
MoveElem::new(self).with_dx(delta.x).with_dy(delta.y).pack()
}
}
/// Additional methods for style lists.
pub trait StylesExt {
/// Set a font family composed of a preferred family and existing families
/// from a style chain.
fn set_family(&mut self, preferred: FontFamily, existing: StyleChain);
}
impl StylesExt for Styles {
fn set_family(&mut self, preferred: FontFamily, existing: StyleChain) {
self.set(TextElem::set_font(FontList(
std::iter::once(preferred)
.chain(TextElem::font_in(existing))
.collect(),
)));
}
}
|
