Using setDash for dashed lines

src/canvas.js

@@ -361,10 +361,14 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
       this.ctx.miterLimit = limit;
     },
     setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
-      this.ctx.mozDash = dashArray;
-      this.ctx.mozDashOffset = dashPhase;
-      this.ctx.webkitLineDash = dashArray;
-      this.ctx.webkitLineDashOffset = dashPhase;
+      var ctx = this.ctx;
+      if ('setLineDash' in ctx) {
+        ctx.setLineDash(dashArray);
+        ctx.lineDashOffset = dashPhase;
+      } else {
+        ctx.mozDash = dashArray;
+        ctx.mozDashOffset = dashPhase;
+      }
     },
     setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {
       // Maybe if we one day fully support color spaces this will be important

test/features/tests.js

@@ -391,10 +391,14 @@ var tests = [
       ctx.moveTo(0,5);
       ctx.lineTo(50, 5);
       ctx.lineWidth = 10;
-      ctx.mozDash = [10, 10];
-      ctx.mozDashOffset = 0;
-      ctx.webkitLineDash = [10, 10];
-      ctx.webkitLineDashOffset = 0;
+
+      if ('setLineDash' in ctx) {
+        ctx.setLineDash([10, 10]);
+        ctx.lineDashOffset = 0;
+      } else {
+        ctx.mozDash = [10, 10];
+        ctx.mozDashOffset = 0;
+      }
       ctx.stroke();
 
       var data = ctx.getImageData(0, 0, 50, 50).data;