Canvas: added miterLimit support.

2 files changed, 16 insertions, 1 deletions

diff --git a/components/script/dom/canvasrenderingcontext2d.rs b/components/script/dom/canvasrenderingcontext2d.rs
index 8213e7afc87..d079ce209c6 100644
--- a/components/script/dom/canvasrenderingcontext2d.rs
+++ b/components/script/dom/canvasrenderingcontext2d.rs
@@ -53,6 +53,7 @@ pub struct CanvasRenderingContext2D {
     image_smoothing_enabled: Cell<bool>,
     stroke_color: Cell<RGBA>,
     line_width: Cell<f64>,
+    miter_limit: Cell<f64>,
     fill_color: Cell<RGBA>,
     transform: Cell<Matrix2D<f32>>,
 }
@@ -75,6 +76,7 @@ impl CanvasRenderingContext2D {
             image_smoothing_enabled: Cell::new(true),
             stroke_color: Cell::new(black),
             line_width: Cell::new(1.0),
+            miter_limit: Cell::new(10.0),
             fill_color: Cell::new(black),
             transform: Cell::new(Matrix2D::identity()),
         }
@@ -816,6 +818,19 @@ impl<'a> CanvasRenderingContext2DMethods for JSRef<'a, CanvasRenderingContext2D>
         self.line_width.set(width);
         self.renderer.send(CanvasMsg::SetLineWidth(width as f32)).unwrap()
     }
+
+    fn MiterLimit(self) -> f64 {
+        self.miter_limit.get()
+    }
+
+    fn SetMiterLimit(self, limit: f64) {
+        if !limit.is_finite() || limit <= 0.0 {
+            return;
+        }
+
+        self.miter_limit.set(limit);
+        self.renderer.send(CanvasMsg::SetMiterLimit(limit as f32)).unwrap()
+    }
 }
 
 #[unsafe_destructor]
diff --git a/components/script/dom/webidls/CanvasRenderingContext2D.webidl b/components/script/dom/webidls/CanvasRenderingContext2D.webidl
index 6808e3c7d24..4c4b94374f2 100644
--- a/components/script/dom/webidls/CanvasRenderingContext2D.webidl
+++ b/components/script/dom/webidls/CanvasRenderingContext2D.webidl
@@ -136,7 +136,7 @@ interface CanvasDrawingStyles {
   attribute unrestricted double lineWidth; // (default 1)
   //attribute DOMString lineCap; // "butt", "round", "square" (default "butt")
   //attribute DOMString lineJoin; // "round", "bevel", "miter" (default "miter")
-  //attribute unrestricted double miterLimit; // (default 10)
+  attribute unrestricted double miterLimit; // (default 10)
 
   // dashed lines
   //void setLineDash(sequence<unrestricted double> segments); // default empty