safety commit

src/victory-container/victory-container.js

@@ -47,7 +47,6 @@ export default class VictoryContainer extends React.Component {
 
   componentWillMount() {
     this.savePortalRef = (portal) => this.portalRef = portal;
-    this.saveSvgRef = (svg) => this.svgRef = svg;
     this.portalUpdate = (key, el) => this.portalRef.portalUpdate(key, el);
     this.portalRegister = () => this.portalRef.portalRegister();
     this.portalDeregister = (key) => this.portalRef.portalDeregister(key);
@@ -97,8 +96,7 @@ export default class VictoryContainer extends React.Component {
     const svgProps = assign(
       {
         "aria-labelledby": "title desc", role: "img", width, height,
-        viewBox: responsive ? `0 0 ${width} ${height}` : undefined,
-        ref: this.saveSvgRef
+        viewBox: responsive ? `0 0 ${width} ${height}` : undefined
       },
       events
     );

src/victory-util/selection.js

@@ -12,13 +12,33 @@ export default {
     }
   },
 
+  getTransformationMatrix(svg) {
+    return svg.getScreenCTM().inverse();
+  },
+
   getSVGEventCoordinates(evt) {
     const svg = this.getParentSVG(evt.target);
-    const matrix = svg.getScreenCTM().inverse();
+    const matrix = this.getTransformationMatrix(svg);
+    return {
+      x: this.transformTarget(evt.clientX, matrix, "x"),
+      y: this.transformTarget(evt.clientY, matrix, "y")
+    };
+  },
+
+  transformTarget(target, matrix, dimension) {
     const {a, d, e, f} = matrix;
+    return dimension === "y" ?
+      d * target + f : a * target + e;
+  },
+
+  getDomainCoordinates(scale) {
+    const domain = {
+      x: scale.x.domain(),
+      y: scale.y.domain()
+    };
     return {
-      x: a * evt.clientX + e,
-      y: d * evt.clientY + f
+      x: [scale.x(domain.x[0]), scale.x(domain.x[1])],
+      y: [scale.y(domain.y[0]), scale.y(domain.y[1])]
     };
   },