GMaps.prototype.drawOverlay = function(options) {
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var overlay = new google.maps.OverlayView(),
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auto_show = true;
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overlay.setMap(this.map);
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if (options.auto_show != null) {
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auto_show = options.auto_show;
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}
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overlay.onAdd = function() {
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var el = document.createElement('div');
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el.style.borderStyle = "none";
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el.style.borderWidth = "0px";
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el.style.position = "absolute";
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el.style.zIndex = 100;
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el.innerHTML = options.content;
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overlay.el = el;
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if (!options.layer) {
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options.layer = 'overlayLayer';
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}
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var panes = this.getPanes(),
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overlayLayer = panes[options.layer],
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stop_overlay_events = ['contextmenu', 'DOMMouseScroll', 'dblclick', 'mousedown'];
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overlayLayer.appendChild(el);
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for (var ev = 0; ev < stop_overlay_events.length; ev++) {
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(function(object, name) {
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google.maps.event.addDomListener(object, name, function(e){
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if (navigator.userAgent.toLowerCase().indexOf('msie') != -1 && document.all) {
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e.cancelBubble = true;
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e.returnValue = false;
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}
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else {
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e.stopPropagation();
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}
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});
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})(el, stop_overlay_events[ev]);
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}
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google.maps.event.trigger(this, 'ready');
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};
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overlay.draw = function() {
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var projection = this.getProjection(),
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pixel = projection.fromLatLngToDivPixel(new google.maps.LatLng(options.lat, options.lng));
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options.horizontalOffset = options.horizontalOffset || 0;
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options.verticalOffset = options.verticalOffset || 0;
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var el = overlay.el,
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content = el.children[0],
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content_height = content.clientHeight,
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content_width = content.clientWidth;
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switch (options.verticalAlign) {
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case 'top':
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el.style.top = (pixel.y - content_height + options.verticalOffset) + 'px';
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break;
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default:
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case 'middle':
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el.style.top = (pixel.y - (content_height / 2) + options.verticalOffset) + 'px';
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break;
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case 'bottom':
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el.style.top = (pixel.y + options.verticalOffset) + 'px';
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break;
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}
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switch (options.horizontalAlign) {
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case 'left':
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el.style.left = (pixel.x - content_width + options.horizontalOffset) + 'px';
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break;
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default:
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case 'center':
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el.style.left = (pixel.x - (content_width / 2) + options.horizontalOffset) + 'px';
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break;
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case 'right':
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el.style.left = (pixel.x + options.horizontalOffset) + 'px';
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break;
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}
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el.style.display = auto_show ? 'block' : 'none';
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if (!auto_show) {
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options.show.apply(this, [el]);
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}
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};
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overlay.onRemove = function() {
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var el = overlay.el;
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if (options.remove) {
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options.remove.apply(this, [el]);
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}
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else {
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overlay.el.parentNode.removeChild(overlay.el);
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overlay.el = null;
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}
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};
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this.overlays.push(overlay);
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return overlay;
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};
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GMaps.prototype.removeOverlay = function(overlay) {
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for (var i = 0; i < this.overlays.length; i++) {
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if (this.overlays[i] === overlay) {
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this.overlays[i].setMap(null);
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this.overlays.splice(i, 1);
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break;
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}
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}
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};
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GMaps.prototype.removeOverlays = function() {
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for (var i = 0, item; item = this.overlays[i]; i++) {
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item.setMap(null);
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}
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this.overlays = [];
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};
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