Add crude coordinate formatter

src/ol/base/coordinateformat.js

@@ -0,0 +1,57 @@
+goog.provide('ol.CoordinateFormat');
+goog.provide('ol.CoordinateFormatType');
+
+goog.require('goog.math');
+goog.require('ol.Coordinate');
+
+
+/**
+ * @typedef {function((ol.Coordinate|undefined)): string}
+ */
+ol.CoordinateFormatType;
+
+
+/**
+ * @private
+ * @param {number} degrees Degrees.
+ * @param {string} hemispheres Hemispheres.
+ * @return {string} String.
+ */
+ol.CoordinateFormat.degreesToHDMS_ = function(degrees, hemispheres) {
+  var normalizedDegrees = goog.math.modulo(degrees + 180, 360) - 180;
+  var x = Math.abs(Math.round(3600 * normalizedDegrees));
+  return Math.floor(x / 3600) + '\u00b0 ' +
+      Math.floor((x / 60) % 60) + '\u2032 ' +
+      Math.floor(x % 60) + '\u2033 ' +
+      hemispheres.charAt(normalizedDegrees < 0 ? 1 : 0);
+};
+
+
+/**
+ * @param {number} precision Precision.
+ * @return {ol.CoordinateFormatType} Coordinate format.
+ */
+ol.CoordinateFormat.createXY = function(precision) {
+  return function(coordinate) {
+    if (goog.isDef(coordinate)) {
+      return coordinate.x.toFixed(precision) + ', ' +
+          coordinate.y.toFixed(precision);
+    } else {
+      return '';
+    }
+  };
+};
+
+
+/**
+ * @param {ol.Coordinate|undefined} coordinate Coordinate.
+ * @return {string} Coordinate format.
+ */
+ol.CoordinateFormat.hdms = function(coordinate) {
+  if (goog.isDef(coordinate)) {
+    return ol.CoordinateFormat.degreesToHDMS_(coordinate.y, 'NS') + ' ' +
+        ol.CoordinateFormat.degreesToHDMS_(coordinate.x, 'EW');
+  } else {
+    return '';
+  }
+};