// EInsert.js // // This Javascript is provided by Mike Williams // Community Church Javascript Team // http://www.bisphamchurch.org.uk/ // http://econym.org.uk/gmap/ // // This work is licenced under a Creative Commons Licence // http://creativecommons.org/licenses/by/2.0/uk/ // // Version 0.0 Experimental Version - no transparent PNG support in IE // Version 0.1 Initial release version - AlphaImageLoader for IE added // Version 0.2 Wasn't positioning to the centre of the insert correctly // Version 0.3 Add zindex parameter // Version 1.0 Add .makeDraggable() [requires API v2.59] // Version 1.1 18/10/2006 use pane 1 instead of G_MAP_MAP_PANE so as to be above GTileLayerOverlay()s // Version 1.2 02/04/2007 work with MarkerManager // Version 1.3 16/05/2007 Add isHidden(), supportsHide(), setImage(), setZindex(), setSize() and setPoint() // Version 1.4 17/09/2007 Remove direct reference to the "map" variable (thanks to Philippe Matet) // Version 1.5 21/01/2008 EInsert.groundOverlay() // Version 1.6 29/10/2009 Fix EInsert.groundOverlay() bug: didn't cope with bounds that crossed the dateline function EInsert(point, image, size, basezoom, zindex) { this.point = point; this.image = image; this.size = size; this.basezoom = basezoom; this.zindex=zindex||0; // Is this IE, if so we need to use AlphaImageLoader var agent = navigator.userAgent.toLowerCase(); if ((agent.indexOf("msie") > -1) && (agent.indexOf("opera") < 1)){this.ie = true} else {this.ie = false} this.hidden = false; } EInsert.prototype = new GOverlay(); EInsert.prototype.initialize = function(map) { var div = document.createElement("div"); div.style.position = "absolute"; div.style.zIndex=this.zindex; if (this.zindex < 0) { map.getPane(G_MAP_MAP_PANE).appendChild(div); } else { map.getPane(1).appendChild(div); } this.map_ = map; this.div_ = div; } EInsert.prototype.makeDraggable = function() { this.dragZoom_ = this.map_.getZoom(); this.dragObject = new GDraggableObject(this.div_); this.dragObject.parent = this; GEvent.addListener(this.dragObject, "dragstart", function() { this.parent.left=this.left; this.parent.top=this.top; }); GEvent.addListener(this.dragObject, "dragend", function() { var pixels = this.parent.map_.fromLatLngToDivPixel(this.parent.point); var newpixels = new GPoint(pixels.x + this.left - this.parent.left, pixels.y +this.top -this.parent.top); this.parent.point = this.parent.map_.fromDivPixelToLatLng(newpixels); this.parent.redraw(true); GEvent.trigger(this.parent, "dragend", this.parent.point); }); } EInsert.prototype.remove = function() { this.div_.parentNode.removeChild(this.div_); } EInsert.prototype.copy = function() { return new EInsert(this.point, this.image, this.size, this.basezoom); } EInsert.prototype.redraw = function(force) { if (force) { var p = this.map_.fromLatLngToDivPixel(this.point); var z = this.map_.getZoom(); var scale = Math.pow(2,(z - this.basezoom)); var h=this.size.height * scale; var w=this.size.width * scale; this.div_.style.left = (p.x - w/2) + "px"; this.div_.style.top = (p.y - h/2) + "px"; if (this.ie) { var loader = "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this.image+"', sizingMethod='scale');"; this.div_.innerHTML = '
'; } else { this.div_.innerHTML = ''; } // Only draggable if current zoom = the initial zoom if (this.dragObject) { if (z != this.dragZoom_) {this.dragObject.disable();} } } } EInsert.prototype.show = function() { this.div_.style.display=""; this.hidden = false; } EInsert.prototype.hide = function() { this.div_.style.display="none"; this.hidden = true; } EInsert.prototype.getPoint = function() { return this.point; } EInsert.prototype.supportsHide = function() { return true; } EInsert.prototype.isHidden = function() { return this.hidden; } EInsert.prototype.setPoint = function(a) { this.point = a; this.redraw(true); } EInsert.prototype.setImage = function(a) { this.image = a; this.redraw(true); } EInsert.prototype.setZindex = function(a) { this.div_.style.zIndex=a; } EInsert.prototype.setSize = function(a) { this.size = a; this.redraw(true); } EInsert.groundOverlay = function(image, bounds, zIndex, proj,z) { var proj = proj||G_NORMAL_MAP.getProjection(); var z = z||17; var sw = proj.fromLatLngToPixel(bounds.getSouthWest(),z); var ne = proj.fromLatLngToPixel(bounds.getNorthEast(),z); if (sw.x <= ne.x) {var nex=ne.x} else {var nex=ne.x+(256*Math.pow(2,z))} var cPixel = new GPoint((sw.x+nex)/2, (sw.y+ne.y)/2); var c = proj.fromPixelToLatLng(cPixel,z); var s = new GSize(nex-sw.x, sw.y-ne.y); return new EInsert(c, image, s, z, zIndex); }