83 lines
2.1 KiB
Rust
83 lines
2.1 KiB
Rust
use crate::{Align, Rectangle, Size};
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/// The bounds of an element and its children.
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#[derive(Debug, Clone, Default)]
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pub struct Node {
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pub(crate) bounds: Rectangle,
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children: Vec<Node>,
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}
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impl Node {
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/// Creates a new [`Node`] with the given [`Size`].
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///
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/// [`Node`]: struct.Node.html
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/// [`Size`]: ../struct.Size.html
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pub fn new(size: Size) -> Self {
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Self::with_children(size, Vec::new())
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}
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/// Creates a new [`Node`] with the given [`Size`] and children.
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///
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/// [`Node`]: struct.Node.html
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/// [`Size`]: ../struct.Size.html
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pub fn with_children(size: Size, children: Vec<Node>) -> Self {
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Node {
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bounds: Rectangle {
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x: 0.0,
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y: 0.0,
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width: size.width,
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height: size.height,
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},
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children,
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}
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}
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/// Returns the [`Size`] of the [`Node`].
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///
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/// [`Node`]: struct.Node.html
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/// [`Size`]: ../struct.Size.html
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pub fn size(&self) -> Size {
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Size::new(self.bounds.width, self.bounds.height)
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}
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/// Returns the bounds of the [`Node`].
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///
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/// [`Node`]: struct.Node.html
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pub fn bounds(&self) -> Rectangle {
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self.bounds
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}
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/// Returns the children of the [`Node`].
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///
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/// [`Node`]: struct.Node.html
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pub fn children(&self) -> &[Node] {
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&self.children
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}
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pub(crate) fn align(
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&mut self,
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horizontal_alignment: Align,
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vertical_alignment: Align,
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space: Size,
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) {
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match horizontal_alignment {
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Align::Start => {}
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Align::Center => {
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self.bounds.x += (space.width - self.bounds.width) / 2.0;
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}
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Align::End => {
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self.bounds.x += space.width - self.bounds.width;
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}
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}
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match vertical_alignment {
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Align::Start => {}
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Align::Center => {
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self.bounds.y += (space.height - self.bounds.height) / 2.0;
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}
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Align::End => {
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self.bounds.y += space.height - self.bounds.height;
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}
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}
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}
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}
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