Fix based on review comments

Author: s417-lama

src/components/legend/attributes.js

@@ -94,10 +94,11 @@ module.exports = {
     },
     itemwidth: {
         valType: 'number',
+        min: 30,
         dflt: 30,
         role: 'style',
         editType: 'legend',
-        description: 'Sets the width (in px) of the legend item symbols (the part other than the text).',
+        description: 'Sets the width (in px) of the legend item symbols (the part other than the title.text).',
     },
 
     itemclick: {

src/components/legend/style.js

@@ -34,6 +34,7 @@ module.exports = function style(s, gd, legend) {
     var constantItemSizing = legend.itemsizing === 'constant';
     var itemWidth = legend.itemwidth;
     var centerPos = (itemWidth + constants.itemGap * 2) / 2;
+    var centerTransform = 'translate(' + centerPos + ',0)';
 
     var boundLineWidth = function(mlw, cont, max, cst) {
         var v;
@@ -275,7 +276,7 @@ module.exports = function style(s, gd, legend) {
         // make sure marker is on the bottom, in case it enters after text
         pts.enter().insert('path', ':first-child')
             .classed('scatterpts', true)
-            .attr('transform', 'translate(' + centerPos + ',0)');
+            .attr('transform', centerTransform);
         pts.exit().remove();
         pts.call(Drawing.pointStyle, tMod, gd);
 
@@ -287,7 +288,7 @@ module.exports = function style(s, gd, legend) {
             .data(showText ? dMod : []);
         txt.enter()
             .append('g').classed('pointtext', true)
-                .append('text').attr('transform', 'translate(' + centerPos + ',0)');
+                .append('text').attr('transform', centerTransform);
         txt.exit().remove();
         txt.selectAll('text').call(Drawing.textPointStyle, tMod, gd);
     }
@@ -315,7 +316,7 @@ module.exports = function style(s, gd, legend) {
             .selectAll('path.legendwaterfall')
             .data(ptsData);
         pts.enter().append('path').classed('legendwaterfall', true)
-            .attr('transform', 'translate(' + centerPos + ',0)')
+            .attr('transform', centerTransform)
             .style('stroke-miterlimit', 1);
         pts.exit().remove();
 
@@ -355,7 +356,7 @@ module.exports = function style(s, gd, legend) {
             .data(isVisible ? [d] : []);
         barpath.enter().append('path').classed('legend' + desiredType, true)
             .attr('d', 'M6,6H-6V-6H6Z')
-            .attr('transform', 'translate(' + centerPos + ',0)');
+            .attr('transform', centerTransform);
         barpath.exit().remove();
 
         barpath.each(function(d) {
@@ -379,7 +380,7 @@ module.exports = function style(s, gd, legend) {
         pts.enter().append('path').classed('legendbox', true)
             // if we want the median bar, prepend M6,0H-6
             .attr('d', 'M6,6H-6V-6H6Z')
-            .attr('transform', 'translate(' + centerPos + ',0)');
+            .attr('transform', centerTransform);
         pts.exit().remove();
 
         pts.each(function() {
@@ -419,7 +420,7 @@ module.exports = function style(s, gd, legend) {
                 if(i) return 'M-15,0H-8M-8,6V-6H8Z'; // increasing
                 return 'M15,0H8M8,-6V6H-8Z'; // decreasing
             })
-            .attr('transform', 'translate(' + centerPos + ',0)')
+            .attr('transform', centerTransform)
             .style('stroke-miterlimit', 1);
         pts.exit().remove();
 
@@ -446,7 +447,7 @@ module.exports = function style(s, gd, legend) {
                 if(i) return 'M-15,0H0M-8,-6V0'; // increasing
                 return 'M15,0H0M8,6V0'; // decreasing
             })
-            .attr('transform', 'translate(' + centerPos + ',0)')
+            .attr('transform', centerTransform)
             .style('stroke-miterlimit', 1);
         pts.exit().remove();
 
@@ -482,7 +483,7 @@ module.exports = function style(s, gd, legend) {
             .data(isVisible ? [d] : []);
         pts.enter().append('path').classed('legend' + desiredType, true)
             .attr('d', 'M6,6H-6V-6H6Z')
-            .attr('transform', 'translate(' + centerPos + ',0)');
+            .attr('transform', centerTransform);
         pts.exit().remove();
 
         if(pts.size()) {
@@ -580,7 +581,7 @@ module.exports = function style(s, gd, legend) {
             .selectAll('path.legend3dandfriends')
             .data(ptsData);
         pts.enter().append('path').classed('legend3dandfriends', true)
-            .attr('transform', 'translate(' + centerPos + ',0)')
+            .attr('transform', centerTransform)
             .style('stroke-miterlimit', 1);
         pts.exit().remove();