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Improve rendering efficiency and add caching (#95)

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Fixes #84

*Reduce heap allocations
* Add caching for rendering svgs
* Deduplicate UpdateCanvas Responses
This commit is contained in:
TrueDoctor
2021-05-07 02:47:38 -07:00
committed by Keavon Chambers
parent 5f1620b008
commit cb9d34c84d
14 changed files with 123 additions and 73 deletions
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core/document/src/layers/polyline.rs
+10 -8
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@@ -19,24 +19,26 @@ impl PolyLine {
}
impl LayerData for PolyLine {
fn render(&self) -> String {
fn render(&mut self, svg: &mut String) {
if self.points.is_empty() {
return String::new();
return;
}
let points = self.points.iter().fold(String::new(), |mut acc, p| {
let _ = write!(&mut acc, " {:.3} {:.3}", p.x, p.y);
acc
let _ = write!(svg, r#"<polyline points=""#);
self.points.iter().for_each(|p| {
let _ = write!(svg, " {:.3} {:.3}", p.x, p.y);
});
format!(r#"<polyline points="{}" {}/>"#, &points[1..], self.style.render())
let _ = write!(svg, r#"" {}/>"#, self.style.render());
}
}
#[test]
fn polyline_should_render() {
let polyline = PolyLine {
let mut polyline = PolyLine {
points: vec![kurbo::Point::new(3.0, 4.12354), kurbo::Point::new(1.0, 5.54)],
style: style::PathStyle::new(Some(style::Stroke::new(crate::color::Color::GREEN, 0.4)), None),
};
assert_eq!(r#"<polyline points="3.000 4.124 1.000 5.540" style="stroke: #00FF00FF;stroke-width:0.4;"/>"#, polyline.render());
let mut svg = String::new();
polyline.render(&mut svg);
assert_eq!(r#"<polyline points=" 3.000 4.124 1.000 5.540" style="stroke: #00FF00FF;stroke-width:0.4;"/>"#, svg);
}