/**
 * MapIconMaker v1.0
 * Copyright (c) 2008 Pamela Fox
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *
 *  Author: Pamela Fox
 *
 *  This gives you static function(s) for creating dynamically sized and
 *  colored marker icons using the Charts API marker output.
 */

var MapIconMaker = {};

MapIconMaker.createMarkerIcon = function(opts) {
  var width = opts.width || 32;
  var height = opts.height || 32;
  var primaryColor = opts.primaryColor || "#ff0000";
  var strokeColor = opts.strokeColor || "#000000";
  var cornerColor = opts.cornerColor || "#ffffff";

  var baseUrl = "http://chart.apis.google.com/chart?cht=mm";
  var iconUrl = baseUrl + "&chs=" + width + "x" + height +
      "&chco=" + cornerColor.replace("#", "") + "," + primaryColor.replace("#", "") + "," + strokeColor.replace("#", "") + "&ext=.png";
  var icon = new GIcon(G_DEFAULT_ICON);
  icon.image = iconUrl;
  icon.iconSize = new GSize(width, height);
  icon.shadowSize = new GSize(Math.floor(width*1.6), height);
  icon.iconAnchor = new GPoint(width/2, height);
  icon.infoWindowAnchor = new GPoint(width/2, Math.floor(height/12));
  icon.printImage = iconUrl + "&chof=gif";
  icon.mozPrintImage = iconUrl + "&chf=bg,s,ECECD8" + "&chof=gif";
  var iconUrl = baseUrl + "&chs=" + width + "x" + height +
      "&chco=" + cornerColor.replace("#", "") + "," + primaryColor.replace("#", "") + "," + strokeColor.replace("#", "");
  icon.transparent = iconUrl + "&chf=a,s,ffffff11&ext=.png";

  icon.imageMap = [
      width/2, height,
      (7/16)*width, (5/8)*height,
      (5/16)*width, (7/16)*height,
      (7/32)*width, (5/16)*height,
      (5/16)*width, (1/8)*height,
      (1/2)*width, 0,
      (11/16)*width, (1/8)*height,
      (25/32)*width, (5/16)*height,
      (11/16)*width, (7/16)*height,
      (9/16)*width, (5/8)*height
  ];
  for (var i = 0; i < icon.imageMap.length; i++) {
    icon.imageMap[i] = parseInt(icon.imageMap[i]);
  }

  return icon;
}


/**
 * Creates a labeled marker icon based on the specified options in the
 * {@link MarkerIconOptions} argument.
 * Supported options are: primaryColor, strokeColor,
 * starPrimaryColor, starStrokeColor, label, labelColor, and addStar.
 * @param {MarkerIconOptions} [opts]
 * @return {GIcon}
 */
MapIconMaker.createLabeledMarkerIcon = function (opts) {
 var primaryColor = opts.primaryColor || "#DA7187";
 var strokeColor = opts.strokeColor || "#000000";
 var starPrimaryColor = opts.starPrimaryColor || "#FFFF00";
 var starStrokeColor = opts.starStrokeColor || "#0000FF";
 var label = MapIconMaker.escapeUserText_(opts.label) || "";
 var labelColor = opts.labelColor || "#000000";
 var addStar = opts.addStar || false;

 var pinProgram = (addStar) ? "pin_star" : "pin";
 var baseUrl = "http://chart.apis.google.com/chart?cht=d&chdp=mapsapi&chl=";
 var iconUrl = baseUrl + pinProgram + "'i\\" + "'[" + label +
 "'-2'f\\" + "hv'a\\]" + "h\\]o\\" +
 primaryColor.replace("#", "") + "'fC\\" +
 labelColor.replace("#", "") + "'tC\\" +
 strokeColor.replace("#", "") + "'eC\\";
 if (addStar) {
 iconUrl += starPrimaryColor.replace("#", "") + "'1C\\" +
 starStrokeColor.replace("#", "") + "'0C\\";
 }
 iconUrl += "Lauto'f\\";

 var icon = new GIcon(G_DEFAULT_ICON);
 icon.image = iconUrl + "&ext=.png";
 icon.iconSize = (addStar) ? new GSize(23, 39) : new GSize(21, 34);
 return icon;
};


/**
 * Utility function for doing special chart API escaping first,
 * and then typical URL escaping. Must be applied to user-supplied text.
 * @private
 */
MapIconMaker.escapeUserText_ = function (text) {
 if (text === undefined) {
 return null;
 }
 text = text.replace(/@/, "@@");
 text = text.replace(/\\/, "@\\");
 text = text.replace(/'/, "@'");
 text = text.replace(/\[/, "@[");
 text = text.replace(/\]/, "@]");
 return encodeURIComponent(text);
};