Fix ruler drawing on high-DPI displays

They were being drawn too large when taking a screenshot

macrovision.js

@@ -5316,7 +5316,10 @@ function renderToCanvas() {
 
         ctx.filter = oldFilter
     });
+    ctx.save();
+    ctx.resetTransform();
     ctx.drawImage(document.querySelector("#rulers"), 0, 0);
+    ctx.restore();
 }
 
 function exportCanvas(callback) {