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authorChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
committerChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
commitea346a785dc1b3f7c156f6fc33da634e1f1a627b (patch)
treeaf67530553d20b6e82ad60fd79593e9c4abf5565 /misc/openlayers/lib/OpenLayers/Control/PanZoom.js
parent59741cd535c47f25971bf8c32b25da25ceadc6d5 (diff)
downloadpostrunner-ea346a785dc1b3f7c156f6fc33da634e1f1a627b.zip
Adding jquery, flot and openlayers to be included with the GEM.v0.0.4
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+/* 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
+ * @requires OpenLayers/Events/buttonclick.js
+ */
+
+/**
+ * Class: OpenLayers.Control.PanZoom
+ * The PanZoom is a visible control, composed of a
+ * <OpenLayers.Control.PanPanel> and a <OpenLayers.Control.ZoomPanel>. By
+ * default it is drawn in the upper left corner of the map.
+ *
+ * Inherits from:
+ * - <OpenLayers.Control>
+ */
+OpenLayers.Control.PanZoom = OpenLayers.Class(OpenLayers.Control, {
+
+ /**
+ * APIProperty: slideFactor
+ * {Integer} Number of pixels by which we'll pan the map in any direction
+ * on clicking the arrow buttons. If you want to pan by some ratio
+ * of the map dimensions, use <slideRatio> instead.
+ */
+ slideFactor: 50,
+
+ /**
+ * APIProperty: slideRatio
+ * {Number} The fraction of map width/height by which we'll pan the map
+ * on clicking the arrow buttons. Default is null. If set, will
+ * override <slideFactor>. E.g. if slideRatio is .5, then the Pan Up
+ * button will pan up half the map height.
+ */
+ slideRatio: null,
+
+ /**
+ * Property: buttons
+ * {Array(DOMElement)} Array of Button Divs
+ */
+ buttons: null,
+
+ /**
+ * Property: position
+ * {<OpenLayers.Pixel>}
+ */
+ position: null,
+
+ /**
+ * Constructor: OpenLayers.Control.PanZoom
+ *
+ * Parameters:
+ * options - {Object}
+ */
+ initialize: function(options) {
+ this.position = new OpenLayers.Pixel(OpenLayers.Control.PanZoom.X,
+ OpenLayers.Control.PanZoom.Y);
+ OpenLayers.Control.prototype.initialize.apply(this, arguments);
+ },
+
+ /**
+ * APIMethod: destroy
+ */
+ destroy: function() {
+ if (this.map) {
+ this.map.events.unregister("buttonclick", this, this.onButtonClick);
+ }
+ this.removeButtons();
+ this.buttons = null;
+ this.position = null;
+ OpenLayers.Control.prototype.destroy.apply(this, arguments);
+ },
+
+ /**
+ * Method: setMap
+ *
+ * Properties:
+ * map - {<OpenLayers.Map>}
+ */
+ setMap: function(map) {
+ OpenLayers.Control.prototype.setMap.apply(this, arguments);
+ this.map.events.register("buttonclick", this, this.onButtonClick);
+ },
+
+ /**
+ * Method: draw
+ *
+ * Parameters:
+ * px - {<OpenLayers.Pixel>}
+ *
+ * Returns:
+ * {DOMElement} A reference to the container div for the PanZoom control.
+ */
+ draw: function(px) {
+ // initialize our internal div
+ OpenLayers.Control.prototype.draw.apply(this, arguments);
+ px = this.position;
+
+ // place the controls
+ this.buttons = [];
+
+ var sz = {w: 18, h: 18};
+ var centered = new OpenLayers.Pixel(px.x+sz.w/2, px.y);
+
+ this._addButton("panup", "north-mini.png", centered, sz);
+ px.y = centered.y+sz.h;
+ this._addButton("panleft", "west-mini.png", px, sz);
+ this._addButton("panright", "east-mini.png", px.add(sz.w, 0), sz);
+ this._addButton("pandown", "south-mini.png",
+ centered.add(0, sz.h*2), sz);
+ this._addButton("zoomin", "zoom-plus-mini.png",
+ centered.add(0, sz.h*3+5), sz);
+ this._addButton("zoomworld", "zoom-world-mini.png",
+ centered.add(0, sz.h*4+5), sz);
+ this._addButton("zoomout", "zoom-minus-mini.png",
+ centered.add(0, sz.h*5+5), sz);
+ return this.div;
+ },
+
+ /**
+ * Method: _addButton
+ *
+ * Parameters:
+ * id - {String}
+ * img - {String}
+ * xy - {<OpenLayers.Pixel>}
+ * sz - {<OpenLayers.Size>}
+ *
+ * Returns:
+ * {DOMElement} A Div (an alphaImageDiv, to be precise) that contains the
+ * image of the button, and has all the proper event handlers set.
+ */
+ _addButton:function(id, img, xy, sz) {
+ var imgLocation = OpenLayers.Util.getImageLocation(img);
+ var btn = OpenLayers.Util.createAlphaImageDiv(
+ this.id + "_" + id,
+ xy, sz, imgLocation, "absolute");
+ btn.style.cursor = "pointer";
+ //we want to add the outer div
+ this.div.appendChild(btn);
+ btn.action = id;
+ btn.className = "olButton";
+
+ //we want to remember/reference the outer div
+ this.buttons.push(btn);
+ return btn;
+ },
+
+ /**
+ * Method: _removeButton
+ *
+ * Parameters:
+ * btn - {Object}
+ */
+ _removeButton: function(btn) {
+ this.div.removeChild(btn);
+ OpenLayers.Util.removeItem(this.buttons, btn);
+ },
+
+ /**
+ * Method: removeButtons
+ */
+ removeButtons: function() {
+ for(var i=this.buttons.length-1; i>=0; --i) {
+ this._removeButton(this.buttons[i]);
+ }
+ },
+
+ /**
+ * Method: onButtonClick
+ *
+ * Parameters:
+ * evt - {Event}
+ */
+ onButtonClick: function(evt) {
+ var btn = evt.buttonElement;
+ switch (btn.action) {
+ case "panup":
+ this.map.pan(0, -this.getSlideFactor("h"));
+ break;
+ case "pandown":
+ this.map.pan(0, this.getSlideFactor("h"));
+ break;
+ case "panleft":
+ this.map.pan(-this.getSlideFactor("w"), 0);
+ break;
+ case "panright":
+ this.map.pan(this.getSlideFactor("w"), 0);
+ break;
+ case "zoomin":
+ this.map.zoomIn();
+ break;
+ case "zoomout":
+ this.map.zoomOut();
+ break;
+ case "zoomworld":
+ this.map.zoomToMaxExtent();
+ break;
+ }
+ },
+
+ /**
+ * Method: getSlideFactor
+ *
+ * Parameters:
+ * dim - {String} "w" or "h" (for width or height).
+ *
+ * Returns:
+ * {Number} The slide factor for panning in the requested direction.
+ */
+ getSlideFactor: function(dim) {
+ return this.slideRatio ?
+ this.map.getSize()[dim] * this.slideRatio :
+ this.slideFactor;
+ },
+
+ CLASS_NAME: "OpenLayers.Control.PanZoom"
+});
+
+/**
+ * Constant: X
+ * {Integer}
+ */
+OpenLayers.Control.PanZoom.X = 4;
+
+/**
+ * Constant: Y
+ * {Integer}
+ */
+OpenLayers.Control.PanZoom.Y = 4;