src/marker.js

jvm.Marker = function(config){
  var text,
      offsets;

  this.config = config;
  this.map = this.config.map;

  this.isImage = !!this.config.style.initial.image;
  this.createShape();

  text = this.getLabelText(config.index);
  if (this.config.label && text) {
    this.offsets = this.getLabelOffsets(config.index);
    this.labelX = config.cx / this.map.scale - this.map.transX;
    this.labelY = config.cy / this.map.scale - this.map.transY;
    this.label = config.canvas.addText({
      text: text,
      'data-index': config.index,
      dy: "0.6ex",
      x: this.labelX,
      y: this.labelY
    }, config.labelStyle, config.labelsGroup);

    this.label.addClass('jvectormap-marker jvectormap-element');
  }
};

jvm.inherits(jvm.Marker, jvm.MapObject);

jvm.Marker.prototype.createShape = function(){
  var that = this;

  if (this.shape) {
    this.shape.remove();
  }
  this.shape = this.config.canvas[this.isImage ? 'addImage' : 'addCircle']({
    "data-index": this.config.index,
    cx: this.config.cx,
    cy: this.config.cy
  }, this.config.style, this.config.group);

  this.shape.addClass('jvectormap-marker jvectormap-element');

  if (this.isImage) {
    jvm.$(this.shape.node).on('imageloaded', function(){
      that.updateLabelPosition();
    });
  }
};

jvm.Marker.prototype.updateLabelPosition = function(){
  if (this.label) {
    this.label.set({
      x: this.labelX * this.map.scale + this.offsets[0] +
         this.map.transX * this.map.scale + 5 + (this.isImage ? (this.shape.width || 0) / 2 : this.shape.properties.r),
      y: this.labelY * this.map.scale + this.map.transY * this.map.scale + this.offsets[1]
    });
  }
};

jvm.Marker.prototype.setStyle = function(property, value){
  var isImage;

  jvm.Marker.parentClass.prototype.setStyle.apply(this, arguments);

  if (property === 'r') {
    this.updateLabelPosition();
  }

  isImage = !!this.shape.get('image');
  if (isImage != this.isImage) {
    this.isImage = isImage;
    this.config.style = jvm.$.extend(true, {}, this.shape.style);
    this.createShape();
  }
};