1 files changed, 22 insertions, 0 deletions
diff --git a/components/script/dom/offscreencanvasrenderingcontext2d.rs b/components/script/dom/offscreencanvasrenderingcontext2d.rs
index a02d2d4a85b..bf1e8058f3e 100644
--- a/components/script/dom/offscreencanvasrenderingcontext2d.rs
+++ b/components/script/dom/offscreencanvasrenderingcontext2d.rs
@@ -2,10 +2,12 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use crate::dom::bindings::cell::DomRefCell;
 use crate::dom::bindings::codegen::Bindings::OffscreenCanvasRenderingContext2DBinding;
 use crate::dom::bindings::codegen::Bindings::OffscreenCanvasRenderingContext2DBinding::OffscreenCanvasRenderingContext2DMethods;
 use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
 use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::canvasrenderingcontext2d::CanvasState;
 use crate::dom::globalscope::GlobalScope;
 use crate::dom::offscreencanvas::OffscreenCanvas;
 use dom_struct::dom_struct;
@@ -15,6 +17,7 @@ use euclid::Size2D;
 pub struct OffscreenCanvasRenderingContext2D {
     reflector_: Reflector,
     canvas: Option<Dom<OffscreenCanvas>>,
+    canvas_state: DomRefCell<CanvasState>,
 }
 
 impl OffscreenCanvasRenderingContext2D {
@@ -26,6 +29,7 @@ impl OffscreenCanvasRenderingContext2D {
         OffscreenCanvasRenderingContext2D {
             reflector_: Reflector::new(),
             canvas: canvas.map(Dom::from_ref),
+            canvas_state: DomRefCell::new(CanvasState::new(_global)),
         }
     }
 
@@ -52,4 +56,22 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     fn Canvas(&self) -> DomRoot<OffscreenCanvas> {
         DomRoot::from_ref(self.canvas.as_ref().expect("No canvas."))
     }
+
+    // https://html.spec.whatwg.org/multipage/#dom-context-2d-fillrect
+    fn FillRect(&self, x: f64, y: f64, width: f64, height: f64) {
+        self.canvas_state.borrow().FillRect(x, y, width, height);
+        //self.mark_as_dirty();
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-context-2d-clearrect
+    fn ClearRect(&self, x: f64, y: f64, width: f64, height: f64) {
+        self.canvas_state.borrow().ClearRect(x, y, width, height);
+        //self.mark_as_dirty();
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokerect
+    fn StrokeRect(&self, x: f64, y: f64, width: f64, height: f64) {
+        self.canvas_state.borrow().StrokeRect(x, y, width, height);
+        //self.mark_as_dirty();
+    }
 }