prep to add treemap to the lib

Author: archmoj

lib/index.js

@@ -26,6 +26,7 @@ Plotly.register([
 
     require('./pie'),
     require('./sunburst'),
+    require('./treemap'),
     require('./funnelarea'),
 
     require('./scatter3d'),

lib/treemap.js

@@ -0,0 +1,11 @@
+/**
+* Copyright 2012-2019, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+module.exports = require('../src/traces/treemap');

src/lib/index.js

@@ -1159,6 +1159,10 @@ lib.isValidTextValue = function(v) {
     return v || v === 0;
 };
 
+/**
+ * @param {number} ratio
+ * @param {number} n (number of decimal places)
+ */
 lib.formatPercent = function(ratio, n) {
     n = n || 0;
     var str = (Math.round(100 * ratio * Math.pow(10, n)) * Math.pow(0.1, n)).toFixed(n) + '%';

src/plot_api/plot_api.js

@@ -2450,7 +2450,7 @@ var traceUIControlPatterns = [
     {pattern: /(^|value\.)visible$/, attr: 'legend.uirevision'},
     {pattern: /^dimensions\[\d+\]\.constraintrange/},
     {pattern: /^node\.(x|y|groups)/}, // for Sankey nodes
-    {pattern: /^level$/}, // for Sunburst traces
+    {pattern: /^level$/}, // for Sunburst & Treemap traces
 
     // below this you must be in editable: true mode
     // TODO: I still put name and title with `trace.uirevision`
@@ -3780,6 +3780,9 @@ function makePlotFramework(gd) {
     // single pie layer for the whole plot
     fullLayout._pielayer = fullLayout._paper.append('g').classed('pielayer', true);
 
+    // single treemap layer for the whole plot
+    fullLayout._treemaplayer = fullLayout._paper.append('g').classed('treemaplayer', true);
+
     // single sunburst layer for the whole plot
     fullLayout._sunburstlayer = fullLayout._paper.append('g').classed('sunburstlayer', true);
 

src/plots/plots.js

@@ -2773,9 +2773,10 @@ plots.doCalcdata = function(gd, traces) {
     gd._hmpixcount = 0;
     gd._hmlumcount = 0;
 
-    // for sharing colors across pies / sunbursts / funnelarea (and for legend)
+    // for sharing colors across pies / sunbursts / treemap / funnelarea (and for legend)
     fullLayout._piecolormap = {};
     fullLayout._sunburstcolormap = {};
+    fullLayout._treemapcolormap = {};
     fullLayout._funnelareacolormap = {};
 
     // If traces were specified and this trace was not included,