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Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Control/ScaleLine.js')
| -rw-r--r-- | misc/openlayers/lib/OpenLayers/Control/ScaleLine.js | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/misc/openlayers/lib/OpenLayers/Control/ScaleLine.js b/misc/openlayers/lib/OpenLayers/Control/ScaleLine.js deleted file mode 100644 index 9262414..0000000 --- a/misc/openlayers/lib/OpenLayers/Control/ScaleLine.js +++ /dev/null @@ -1,220 +0,0 @@ -/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for - * full list of contributors). Published under the 2-clause BSD license. - * See license.txt in the OpenLayers distribution or repository for the - * full text of the license. */ - -/** - * @requires OpenLayers/Control.js - */ - -/** - * Class: OpenLayers.Control.ScaleLine - * The ScaleLine displays a small line indicator representing the current - * map scale on the map. By default it is drawn in the lower left corner of - * the map. - * - * Inherits from: - * - <OpenLayers.Control> - * - * Is a very close copy of: - * - <OpenLayers.Control.Scale> - */ -OpenLayers.Control.ScaleLine = OpenLayers.Class(OpenLayers.Control, { - - /** - * Property: maxWidth - * {Integer} Maximum width of the scale line in pixels. Default is 100. - */ - maxWidth: 100, - - /** - * Property: topOutUnits - * {String} Units for zoomed out on top bar. Default is km. - */ - topOutUnits: "km", - - /** - * Property: topInUnits - * {String} Units for zoomed in on top bar. Default is m. - */ - topInUnits: "m", - - /** - * Property: bottomOutUnits - * {String} Units for zoomed out on bottom bar. Default is mi. - */ - bottomOutUnits: "mi", - - /** - * Property: bottomInUnits - * {String} Units for zoomed in on bottom bar. Default is ft. - */ - bottomInUnits: "ft", - - /** - * Property: eTop - * {DOMElement} - */ - eTop: null, - - /** - * Property: eBottom - * {DOMElement} - */ - eBottom:null, - - /** - * APIProperty: geodesic - * {Boolean} Use geodesic measurement. Default is false. The recommended - * setting for maps in EPSG:4326 is false, and true EPSG:900913. If set to - * true, the scale will be calculated based on the horizontal size of the - * pixel in the center of the map viewport. - */ - geodesic: false, - - /** - * Constructor: OpenLayers.Control.ScaleLine - * Create a new scale line control. - * - * Parameters: - * options - {Object} An optional object whose properties will be used - * to extend the control. - */ - - /** - * Method: draw - * - * Returns: - * {DOMElement} - */ - draw: function() { - OpenLayers.Control.prototype.draw.apply(this, arguments); - if (!this.eTop) { - // stick in the top bar - this.eTop = document.createElement("div"); - this.eTop.className = this.displayClass + "Top"; - var theLen = this.topInUnits.length; - this.div.appendChild(this.eTop); - if((this.topOutUnits == "") || (this.topInUnits == "")) { - this.eTop.style.visibility = "hidden"; - } else { - this.eTop.style.visibility = "visible"; - } - - // and the bottom bar - this.eBottom = document.createElement("div"); - this.eBottom.className = this.displayClass + "Bottom"; - this.div.appendChild(this.eBottom); - if((this.bottomOutUnits == "") || (this.bottomInUnits == "")) { - this.eBottom.style.visibility = "hidden"; - } else { - this.eBottom.style.visibility = "visible"; - } - } - this.map.events.register('moveend', this, this.update); - this.update(); - return this.div; - }, - - /** - * Method: getBarLen - * Given a number, round it down to the nearest 1,2,5 times a power of 10. - * That seems a fairly useful set of number groups to use. - * - * Parameters: - * maxLen - {float} the number we're rounding down from - * - * Returns: - * {Float} the rounded number (less than or equal to maxLen) - */ - getBarLen: function(maxLen) { - // nearest power of 10 lower than maxLen - var digits = parseInt(Math.log(maxLen) / Math.log(10)); - var pow10 = Math.pow(10, digits); - - // ok, find first character - var firstChar = parseInt(maxLen / pow10); - - // right, put it into the correct bracket - var barLen; - if(firstChar > 5) { - barLen = 5; - } else if(firstChar > 2) { - barLen = 2; - } else { - barLen = 1; - } - - // scale it up the correct power of 10 - return barLen * pow10; - }, - - /** - * Method: update - * Update the size of the bars, and the labels they contain. - */ - update: function() { - var res = this.map.getResolution(); - if (!res) { - return; - } - - var curMapUnits = this.map.getUnits(); - var inches = OpenLayers.INCHES_PER_UNIT; - - // convert maxWidth to map units - var maxSizeData = this.maxWidth * res * inches[curMapUnits]; - var geodesicRatio = 1; - if(this.geodesic === true) { - var maxSizeGeodesic = (this.map.getGeodesicPixelSize().w || - 0.000001) * this.maxWidth; - var maxSizeKilometers = maxSizeData / inches["km"]; - geodesicRatio = maxSizeGeodesic / maxSizeKilometers; - maxSizeData *= geodesicRatio; - } - - // decide whether to use large or small scale units - var topUnits; - var bottomUnits; - if(maxSizeData > 100000) { - topUnits = this.topOutUnits; - bottomUnits = this.bottomOutUnits; - } else { - topUnits = this.topInUnits; - bottomUnits = this.bottomInUnits; - } - - // and to map units units - var topMax = maxSizeData / inches[topUnits]; - var bottomMax = maxSizeData / inches[bottomUnits]; - - // now trim this down to useful block length - var topRounded = this.getBarLen(topMax); - var bottomRounded = this.getBarLen(bottomMax); - - // and back to display units - topMax = topRounded / inches[curMapUnits] * inches[topUnits]; - bottomMax = bottomRounded / inches[curMapUnits] * inches[bottomUnits]; - - // and to pixel units - var topPx = topMax / res / geodesicRatio; - var bottomPx = bottomMax / res / geodesicRatio; - - // now set the pixel widths - // and the values inside them - - if (this.eBottom.style.visibility == "visible"){ - this.eBottom.style.width = Math.round(bottomPx) + "px"; - this.eBottom.innerHTML = bottomRounded + " " + bottomUnits ; - } - - if (this.eTop.style.visibility == "visible"){ - this.eTop.style.width = Math.round(topPx) + "px"; - this.eTop.innerHTML = topRounded + " " + topUnits; - } - - }, - - CLASS_NAME: "OpenLayers.Control.ScaleLine" -}); - |