X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph.js;h=aea8830a3f02f10591f98b588acc2bd654d32e35;hb=f8540c66c5b87d5e88d31a800dc7af237bf01213;hp=99fdf3bba89df1f783242c4b8fb82eaa3bc3eab0;hpb=f417e3d384d1a03a38ce57a759c37b2de8eda937;p=dygraphs.git

diff --git a/dygraph.js b/dygraph.js
index 99fdf3b..aea8830 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -1063,8 +1063,10 @@ Dygraph.prototype.createMouseEventElement_ = function() {
  * @private
  */
 Dygraph.prototype.setColors_ = function() {
-  var num = this.attr_("labels").length - 1;
+  var labels = this.getLabels();
+  var num = labels.length - 1;
   this.colors_ = [];
+  this.colorsMap_ = {};
   var colors = this.attr_('colors');
   var i;
   if (!colors) {
@@ -1076,13 +1078,16 @@ Dygraph.prototype.setColors_ = function() {
       // alternate colors for high contrast.
       var idx = i % 2 ? Math.ceil(i / 2) : (half + i / 2);
       var hue = (1.0 * idx/ (1 + num));
-      this.colors_.push(Dygraph.hsvToRGB(hue, sat, val));
+      var colorStr = Dygraph.hsvToRGB(hue, sat, val);
+      this.colors_.push(colorStr);
+      this.colorsMap_[labels[i]] = colorStr;
     }
   } else {
     for (i = 0; i < num; i++) {
       if (!this.visibility()[i]) continue;
       var colorStr = colors[i % colors.length];
       this.colors_.push(colorStr);
+      this.colorsMap_[labels[1 + i]] = colorStr;
     }
   }
 
@@ -2103,7 +2108,7 @@ Dygraph.prototype.predraw_ = function() {
 
   // Create a new plotter.
   if (this.plotter_) {
-    this.cascadeEvents_('clear');
+    this.cascadeEvents_('clearChart');
     this.plotter_.clear();
   }
   this.plotter_ = new DygraphCanvasRenderer(this,
@@ -2333,7 +2338,7 @@ Dygraph.prototype.drawGraph_ = function() {
  * @private
  */
 Dygraph.prototype.renderGraph_ = function(is_initial_draw) {
-  this.cascadeEvents_('clear');
+  this.cascadeEvents_('clearChart');
   this.plotter_.clear();
 
   this.plotter_.render();
@@ -2349,7 +2354,10 @@ Dygraph.prototype.renderGraph_ = function(is_initial_draw) {
     this.rangeSelector_.renderInteractiveLayer();
   }
 
-  this.cascadeEvents_('drawChart');
+  this.cascadeEvents_('drawChart', {
+    canvas: this.hidden_,
+    drawingContext: this.hidden_ctx_,
+  });
   if (this.attr_("drawCallback") !== null) {
     this.attr_("drawCallback")(this, is_initial_draw);
   }
@@ -3496,6 +3504,7 @@ Dygraph.prototype.datasetIndexFromSetName_ = function(name) {
  * called once -- all calls after the first will return immediately.
  */
 Dygraph.addAnnotationRule = function() {
+  // TODO(danvk): move this function into plugins/annotations.js?
   if (Dygraph.addedAnnotationCSS) return;
 
   var rule = "border: 1px solid black; " +