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Implement CanvasRenderingContext2D.getTransform()

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This commit is contained in:
pylbrecht 2020-02-11 22:36:50 +01:00
parent 6b2079e5b3
commit 588c09b580
16 changed files with 42 additions and 22 deletions
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10
components/script/canvas_state.rs
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@ -16,6 +16,7 @@ use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::bindings::str::DOMString;
use crate::dom::canvasgradient::{CanvasGradient, CanvasGradientStyle, ToFillOrStrokeStyle};
use crate::dom::canvaspattern::CanvasPattern;
use crate::dom::dommatrix::DOMMatrix;
use crate::dom::element::cors_setting_for_element;
use crate::dom::element::Element;
use crate::dom::globalscope::GlobalScope;
@ -1415,6 +1416,15 @@ impl CanvasState {
self.update_transform()
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-gettransform
pub fn get_transform(&self, global: &GlobalScope) -> DomRoot<DOMMatrix> {
let (sender, receiver) = ipc::channel::<Transform2D<f32>>().unwrap();
self.send_canvas_2d_msg(Canvas2dMsg::GetTransform(sender));
let transform = receiver.recv().unwrap();
DOMMatrix::new(global, true, transform.cast::<f64>().to_3d())
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-settransform
pub fn set_transform(&self, a: f64, b: f64, c: f64, d: f64, e: f64, f: f64) {
if !(a.is_finite() &&