1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for * full list of contributors). Published under the Clear BSD license. * See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * @requires OpenLayers/Control.js */ /** * Class: OpenLayers.Control.Pan * The Pan control is a single button to pan the map in one direction. For * a more complete control see <OpenLayers.Control.PanPanel>. * * Inherits from: * - <OpenLayers.Control> */ OpenLayers.Control.Pan = 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, defaults to 50. */ slideFactor: 50, /** * Property: direction * {String} in {'North', 'South', 'East', 'West'} */ direction: null, /** * Property: type * {String} The type of <OpenLayers.Control> -- When added to a * <Control.Panel>, 'type' is used by the panel to determine how to * handle our events. */ type: OpenLayers.Control.TYPE_BUTTON, /** * Constructor: OpenLayers.Control.Pan * Control which handles the panning (in any of the cardinal directions) * of the map by a set px distance. * * Parameters: * direction - {String} The direction this button should pan. * options - {Object} An optional object whose properties will be used * to extend the control. */ initialize: function(direction, options) { this.direction = direction; this.CLASS_NAME += this.direction; OpenLayers.Control.prototype.initialize.apply(this, [options]); }, /** * Method: trigger */ trigger: function(){ switch (this.direction) { case OpenLayers.Control.Pan.NORTH: this.map.pan(0, -this.slideFactor); break; case OpenLayers.Control.Pan.SOUTH: this.map.pan(0, this.slideFactor); break; case OpenLayers.Control.Pan.WEST: this.map.pan(-this.slideFactor, 0); break; case OpenLayers.Control.Pan.EAST: this.map.pan(this.slideFactor, 0); break; } }, CLASS_NAME: "OpenLayers.Control.Pan" }); OpenLayers.Control.Pan.NORTH = "North"; OpenLayers.Control.Pan.SOUTH = "South"; OpenLayers.Control.Pan.EAST = "East"; OpenLayers.Control.Pan.WEST = "West"; |