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aa15dc269f
http://www.robohornet.org gives a score of 101.36 on master, and 102.68 with this PR. The latter is slightly better, but probably within noise level. So it looks like this PR does not affect DOM performance. This is expected since `Box::new` is defined as: ```rust impl<T> Box<T> { #[inline(always)] pub fn new(x: T) -> Box<T> { box x } } ``` With inlining, it should compile to the same as box syntax.
103 lines
4.1 KiB
Rust
103 lines
4.1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use canvas_traits::canvas::{CanvasGradientStop, FillOrStrokeStyle, LinearGradientStyle, RadialGradientStyle};
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use cssparser::{Parser, ParserInput, RGBA};
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use cssparser::Color as CSSColor;
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use dom::bindings::cell::DomRefCell;
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use dom::bindings::codegen::Bindings::CanvasGradientBinding;
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use dom::bindings::codegen::Bindings::CanvasGradientBinding::CanvasGradientMethods;
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use dom::bindings::error::{Error, ErrorResult};
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use dom::bindings::num::Finite;
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::root::DomRoot;
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use dom::bindings::str::DOMString;
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use dom::globalscope::GlobalScope;
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use dom_struct::dom_struct;
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// https://html.spec.whatwg.org/multipage/#canvasgradient
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#[dom_struct]
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pub struct CanvasGradient {
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reflector_: Reflector,
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style: CanvasGradientStyle,
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stops: DomRefCell<Vec<CanvasGradientStop>>,
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}
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#[derive(Clone, HeapSizeOf, JSTraceable)]
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pub enum CanvasGradientStyle {
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Linear(LinearGradientStyle),
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Radial(RadialGradientStyle),
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}
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impl CanvasGradient {
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fn new_inherited(style: CanvasGradientStyle) -> CanvasGradient {
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CanvasGradient {
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reflector_: Reflector::new(),
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style: style,
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stops: DomRefCell::new(Vec::new()),
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}
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}
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pub fn new(global: &GlobalScope, style: CanvasGradientStyle) -> DomRoot<CanvasGradient> {
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reflect_dom_object(Box::new(CanvasGradient::new_inherited(style)),
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global,
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CanvasGradientBinding::Wrap)
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}
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}
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impl CanvasGradientMethods for CanvasGradient {
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// https://html.spec.whatwg.org/multipage/#dom-canvasgradient-addcolorstop
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fn AddColorStop(&self, offset: Finite<f64>, color: DOMString) -> ErrorResult {
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if *offset < 0f64 || *offset > 1f64 {
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return Err(Error::IndexSize);
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}
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let mut input = ParserInput::new(&color);
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let mut parser = Parser::new(&mut input);
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let color = CSSColor::parse(&mut parser);
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let color = if parser.is_exhausted() {
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match color {
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Ok(CSSColor::RGBA(rgba)) => rgba,
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Ok(CSSColor::CurrentColor) => RGBA::new(0, 0, 0, 255),
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_ => return Err(Error::Syntax)
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}
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} else {
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return Err(Error::Syntax)
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};
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self.stops.borrow_mut().push(CanvasGradientStop {
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offset: (*offset) as f64,
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color: color,
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});
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Ok(())
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}
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}
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pub trait ToFillOrStrokeStyle {
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fn to_fill_or_stroke_style(self) -> FillOrStrokeStyle;
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}
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impl<'a> ToFillOrStrokeStyle for &'a CanvasGradient {
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fn to_fill_or_stroke_style(self) -> FillOrStrokeStyle {
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let gradient_stops = self.stops.borrow().clone();
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match self.style {
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CanvasGradientStyle::Linear(ref gradient) => {
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FillOrStrokeStyle::LinearGradient(LinearGradientStyle::new(gradient.x0,
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gradient.y0,
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gradient.x1,
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gradient.y1,
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gradient_stops))
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}
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CanvasGradientStyle::Radial(ref gradient) => {
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FillOrStrokeStyle::RadialGradient(RadialGradientStyle::new(gradient.x0,
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gradient.y0,
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gradient.r0,
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gradient.x1,
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gradient.y1,
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gradient.r1,
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gradient_stops))
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}
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}
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}
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}
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