1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
use super::*;
/// A node that places a rectangular filled background behind its child.
#[derive(Debug, Clone, PartialEq)]
pub struct BackgroundNode {
/// The kind of shape to use as a background.
pub shape: BackgroundShape,
/// The background fill.
pub fill: Fill,
/// The child node to be filled.
pub child: Node,
}
/// The kind of shape to use as a background.
#[derive(Debug, Clone, PartialEq)]
pub enum BackgroundShape {
Rect,
Ellipse,
}
impl Layout for BackgroundNode {
fn layout(&self, ctx: &mut LayoutContext, areas: &Areas) -> Fragment {
let mut fragment = self.child.layout(ctx, areas);
for frame in fragment.frames_mut() {
let (point, shape) = match self.shape {
BackgroundShape::Rect => (Point::ZERO, Shape::Rect(frame.size)),
BackgroundShape::Ellipse => {
(frame.size.to_point() / 2.0, Shape::Ellipse(frame.size))
}
};
let element = Element::Geometry(Geometry { shape, fill: self.fill });
frame.elements.insert(0, (point, element));
}
fragment
}
}
impl From<BackgroundNode> for AnyNode {
fn from(background: BackgroundNode) -> Self {
Self::new(background)
}
}
|
