+DygraphCanvasRenderer.prototype._renderAnnotations = function() {
+ var annotationStyle = {
+ "position": "absolute",
+ "fontSize": this.options.axisLabelFontSize + "px",
+ "zIndex": 10,
+ "overflow": "hidden"
+ };
+
+ var bindEvt = function(eventName, classEventName, p, self) {
+ return function(e) {
+ var a = p.annotation;
+ if (a.hasOwnProperty(eventName)) {
+ a[eventName](a, p, self.dygraph_, e);
+ } else if (self.dygraph_.attr_(classEventName)) {
+ self.dygraph_.attr_(classEventName)(a, p, self.dygraph_,e );
+ }
+ };
+ }
+
+ // Get a list of point with annotations.
+ var points = this.layout.annotated_points;
+ for (var i = 0; i < points.length; i++) {
+ var p = points[i];
+ if (p.canvasx < this.area.x || p.canvasx > this.area.x + this.area.w) {
+ continue;
+ }
+
+ var a = p.annotation;
+ var tick_height = 6;
+ if (a.hasOwnProperty("tickHeight")) {
+ tick_height = a.tickHeight;
+ }
+
+ var div = document.createElement("div");
+ for (var name in annotationStyle) {
+ if (annotationStyle.hasOwnProperty(name)) {
+ div.style[name] = annotationStyle[name];
+ }
+ }
+ if (!a.hasOwnProperty('icon')) {
+ div.className = "dygraphDefaultAnnotation";
+ }
+ if (a.hasOwnProperty('cssClass')) {
+ div.className += " " + a.cssClass;
+ }
+
+ var width = a.hasOwnProperty('width') ? a.width : 16;
+ var height = a.hasOwnProperty('height') ? a.height : 16;
+ if (a.hasOwnProperty('icon')) {
+ var img = document.createElement("img");
+ img.src = a.icon;
+ img.width = width;
+ img.height = height;
+ div.appendChild(img);
+ } else if (p.annotation.hasOwnProperty('shortText')) {
+ div.appendChild(document.createTextNode(p.annotation.shortText));
+ }
+ div.style.left = (p.canvasx - width / 2) + "px";
+ if (a.attachAtBottom) {
+ div.style.top = (this.area.h - height - tick_height) + "px";
+ } else {
+ div.style.top = (p.canvasy - height - tick_height) + "px";
+ }
+ div.style.width = width + "px";
+ div.style.height = height + "px";
+ div.title = p.annotation.text;
+ div.style.color = this.colors[p.name];
+ div.style.borderColor = this.colors[p.name];
+ a.div = div;
+
+ Dygraph.addEvent(div, 'click',
+ bindEvt('clickHandler', 'annotationClickHandler', p, this));
+ Dygraph.addEvent(div, 'mouseover',
+ bindEvt('mouseOverHandler', 'annotationMouseOverHandler', p, this));
+ Dygraph.addEvent(div, 'mouseout',
+ bindEvt('mouseOutHandler', 'annotationMouseOutHandler', p, this));
+ Dygraph.addEvent(div, 'dblclick',
+ bindEvt('dblClickHandler', 'annotationDblClickHandler', p, this));
+
+ this.container.appendChild(div);
+ this.annotations.push(div);
+
+ var ctx = this.element.getContext("2d");
+ ctx.strokeStyle = this.colors[p.name];
+ ctx.beginPath();
+ if (!a.attachAtBottom) {
+ ctx.moveTo(p.canvasx, p.canvasy);
+ ctx.lineTo(p.canvasx, p.canvasy - 2 - tick_height);
+ } else {
+ ctx.moveTo(p.canvasx, this.area.h);
+ ctx.lineTo(p.canvasx, this.area.h - 2 - tick_height);
+ }
+ ctx.closePath();
+ ctx.stroke();
+ }
+};
+
+