82 lines
2.2 KiB
Rust
82 lines
2.2 KiB
Rust
//! Extension traits.
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use crate::layout::{AlignNode, MoveNode, PadNode};
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use crate::prelude::*;
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use crate::text::{EmphNode, FontFamily, FontList, StrongNode, TextNode, UnderlineNode};
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/// Additional methods on content.
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pub trait ContentExt {
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/// Make this content strong.
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fn strong(self) -> Self;
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/// Make this content emphasized.
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fn emph(self) -> Self;
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/// Underline this content.
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fn underlined(self) -> Self;
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/// Link the content to a destination.
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fn linked(self, dest: Destination) -> Self;
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/// Set alignments for this content.
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fn aligned(self, aligns: Axes<Option<GenAlign>>) -> Self;
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/// Pad this content at the sides.
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fn padded(self, padding: Sides<Rel<Length>>) -> Self;
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/// Transform this content's contents without affecting layout.
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fn moved(self, delta: Axes<Rel<Length>>) -> Self;
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}
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impl ContentExt for Content {
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fn strong(self) -> Self {
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StrongNode::new(self).pack()
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}
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fn emph(self) -> Self {
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EmphNode::new(self).pack()
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}
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fn underlined(self) -> Self {
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UnderlineNode::new(self).pack()
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}
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fn linked(self, dest: Destination) -> Self {
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self.styled(MetaNode::set_data(vec![Meta::Link(dest)]))
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}
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fn aligned(self, aligns: Axes<Option<GenAlign>>) -> Self {
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self.styled(AlignNode::set_alignment(aligns))
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}
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fn padded(self, padding: Sides<Rel<Length>>) -> Self {
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PadNode::new(self)
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.with_left(padding.left)
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.with_top(padding.top)
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.with_right(padding.right)
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.with_bottom(padding.bottom)
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.pack()
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}
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fn moved(self, delta: Axes<Rel<Length>>) -> Self {
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MoveNode::new(self).with_dx(delta.x).with_dy(delta.y).pack()
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}
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}
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/// Additional methods for style maps.
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pub trait StyleMapExt {
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/// Set a font family composed of a preferred family and existing families
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/// from a style chain.
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fn set_family(&mut self, preferred: FontFamily, existing: StyleChain);
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}
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impl StyleMapExt for StyleMap {
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fn set_family(&mut self, preferred: FontFamily, existing: StyleChain) {
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self.set(TextNode::set_font(FontList(
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std::iter::once(preferred)
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.chain(TextNode::font_in(existing))
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.collect(),
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)));
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}
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}
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