change the way layout.barcornerradius is handled

Author: emilykl

Diff for: src/traces/bar/defaults.js

@@ -47,7 +47,7 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
     });
 
     handleStyleDefaults(traceIn, traceOut, coerce, defaultColor, layout);
-
+    coerce('marker.cornerradius');
     var lineColor = (traceOut.marker.line || {}).color;
 
     // override defaultColor for error bars with defaultLine
@@ -61,16 +61,19 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
 function crossTraceDefaults(fullData, fullLayout) {
     var traceIn, traceOut;
 
-    function coerce(attr) {
-        return Lib.coerce(traceOut._input, traceOut, attributes, attr);
+    function coerce(attr, dflt) {
+        return Lib.coerce(traceOut._input, traceOut, attributes, attr, dflt);
     }
 
-    if(fullLayout.barmode === 'group') {
-        for(var i = 0; i < fullData.length; i++) {
-            traceOut = fullData[i];
+    for(var i = 0; i < fullData.length; i++) {
+        traceOut = fullData[i];
 
-            if(traceOut.type === 'bar') {
-                traceIn = traceOut._input;
+        if(traceOut.type === 'bar') {
+            traceIn = traceOut._input;
+            // This needs to happen here rather than in handleStyleDefaults() because
+            // it needs to happen after `layout.barcornerradius` has been coerced
+            coerce('marker.cornerradius', fullLayout.barcornerradius);
+            if(fullLayout.barmode === 'group') {
                 handleGroupingDefaults(traceIn, traceOut, fullLayout, coerce);
             }
         }

Diff for: src/traces/bar/plot.js

@@ -232,9 +232,7 @@ function plot(gd, plotinfo, cdModule, traceLayer, opts, makeOnCompleteCallback)
                 y1 = fixpx(y1, y0, !isHorizontal);
             }
 
-            // Here is where bar is drawn
-            // TODO: Implement rounded corners here
-
+            // Construct path string for bar
             function calcCornerRadius(radiusParam) {
                 var barWidth = isHorizontal ? Math.abs(y1 - y0) : Math.abs(x1 - x0);
                 if(!radiusParam) {
@@ -246,7 +244,7 @@ function plot(gd, plotinfo, cdModule, traceLayer, opts, makeOnCompleteCallback)
                     return Math.max(Math.min(radiusParam, barWidth / 2), 0);
                 }
             }
-            var r = calcCornerRadius(trace.marker.cornerradius || fullLayout.barcornerradius);
+            var r = calcCornerRadius(trace.marker.cornerradius);
             var bardir = isHorizontal ? Math.sign(x1 - x0) : Math.sign(y0 - y1);
             var cornersweep = bardir >= 0 ? 1 : 0;
 

Diff for: test/image/mocks/bar-rounded-corners.json

@@ -1,32 +1,60 @@
 {
     "data": [
-        {
-            "x": [
-                "giraffes",
-                "orangutans",
-                "monkeys",
-                "capybaras"
-              ],
-              "y": [20, -14, 2, 18
-              ],
-              "type": "bar",
-              "marker": {"cornerradius": 10}
-          },
-          {
-            "y": [
-                "giraffes",
-                "orangutans",
-                "monkeys",
-                "capybaras"
-              ],
-              "x": [20, -4, -12, 18],
-              "type": "bar",
-              "orientation": "h",
-            "xaxis": "x2",
-            "yaxis": "y2"
-          }
-
+      {
+        "x": [
+            "giraffes",
+            "orangutans",
+            "monkeys",
+            "capybaras"
+          ],
+          "y": [20, -14, 2, 18],
+          "type": "bar",
+          "marker": {"cornerradius": 10}
+      },
+      {
+        "y": [
+            "giraffes",
+            "orangutans",
+            "monkeys",
+            "capybaras"
+          ],
+          "x": [20, -4, 1, 18],
+          "type": "bar",
+          "orientation": "h",
+        "xaxis": "x2",
+        "yaxis": "y2"
+      },
+      {
+        "x": [
+            "giraffes",
+            "orangutans",
+            "monkeys",
+            "capybaras"
+          ],
+          "y": [20, -14, 2, 18],
+          "type": "bar",
+          "marker": {"cornerradius": 10},
+          "xaxis": "x3",
+          "yaxis": "y3"
+      },
+      {
+        "x": [
+            "giraffes",
+            "orangutans",
+            "monkeys",
+            "capybaras"
+          ],
+          "y": [20, -14, 2, 18],
+          "type": "bar",
+          "marker": {"cornerradius": 10},
+          "xaxis": "x3",
+          "yaxis": "y3"
+      }
     ],
-    "layout": {"grid": {"rows": 1, "columns": 2, "pattern": "independent"}, "barcornerradius": "30%"}
+    "layout": {
+      "grid": {"rows": 2, "columns": 2, "pattern": "independent"}, 
+      "barmode": "stack",
+      "barcornerradius": "50%"
+    }
   }