是否可以在 Google Maps API v3 上编写自定义文本? [英] Is it possible to write custom text on Google Maps API v3?
本文介绍了是否可以在 Google Maps API v3 上编写自定义文本?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
是否可以在标记旁边的 Google Maps API v3 上编写自定义文本，或者我只能使用信息窗口来执行此操作?
解决方案
要显示自定义文本，您需要创建自定义叠加层.下面是一个改编自 Google 官方文档的示例.您还可以使用这个库了解更多时尚"信息窗口
<头><script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"><脚本>//改编自此示例 http://code.google.com/apis/maps/documentation/javascript/overlays.html#CustomOverlays//文字叠加函数 TxtOverlay(pos, txt, cls, map) {//现在初始化所有属性.this.pos = pos;this.txt_ = txt;this.cls_ = cls;this.map_ = 地图；//我们定义了一个属性来保存图像的//分区.我们将实际创建这个 div//收到 add() 方法后，我们将//暂时让它为空.this.div_ = null;//在此叠加层上显式调用 setMap()this.setMap(地图);}TxtOverlay.prototype = new google.maps.OverlayView();TxtOverlay.prototype.onAdd = function() {//注意:叠加层收到 onAdd() 表示//地图的窗格现在可用于附加//通过 DOM 覆盖到地图.//创建 DIV 并设置一些基本属性.var div = document.createElement('DIV');div.className = this.cls_;div.innerHTML = this.txt_;//将叠加层的 div_ 属性设置为此 DIVthis.div_ = div;var overlayProjection = this.getProjection();var position = overlayProjection.fromLatLngToDivPixel(this.pos);div.style.left = position.x + 'px';div.style.top = position.y + 'px';//我们通过地图窗格之一向地图添加叠加层.var 窗格 = this.getPanes();窗格.floatPane.appendChild(div);}TxtOverlay.prototype.draw = function() {var overlayProjection = this.getProjection();//检索此叠加层的西南和东北坐标//在 latlngs 中并将它们转换为像素坐标.//我们将使用这些坐标来调整 DIV 的大小.var position = overlayProjection.fromLatLngToDivPixel(this.pos);var div = this.div_;div.style.left = position.x + 'px';div.style.top = position.y + 'px';}//可选:用于移除和切换文本叠加层的辅助方法.TxtOverlay.prototype.onRemove = function() {this.div_.parentNode.removeChild(this.div_);this.div_ = null;}TxtOverlay.prototype.hide = function() {如果(this.div_){this.div_.style.visibility = "隐藏";}}TxtOverlay.prototype.show = function() {如果(this.div_){this.div_.style.visibility = "可见";}}TxtOverlay.prototype.toggle = function() {如果(this.div_){如果(this.div_.style.visibility ==隐藏"){this.show();} 别的 {this.hide();}}}TxtOverlay.prototype.toggleDOM = function() {如果 (this.getMap()) {this.setMap(null);} 别的 {this.setMap(this.map_);}}无功地图；函数初始化(){var latlng = new google.maps.LatLng(37.9069, -122.0792);var myOptions = {缩放:4，中心:latlng，mapTypeId: google.maps.MapTypeId.ROADMAP};map = new google.maps.Map(document.getElementById("map"), myOptions);var 标记 = 新的 google.maps.Marker({位置:latlng，地图:地图，标题:世界你好！"});customTxt = "废话sdfsddddddddddddddddddddddddddddddddddd- 废话1
- 废话2
"txt = new TxtOverlay(latlng, customTxt, "customBox", map)}<风格>.customBox {背景:黄色；边框:1px纯黑色；位置:绝对；}</风格><body onload="init()"><div id="map" style="width: 600px; height: 600px;">
</html>
Is it possible to write a custom text on Google Maps API v3 next to the marker, or I can use only the info window to do that?
解决方案
To show custom text you need to create a custom overlay. Below is an example adapted from official Google documentation. You could also use this library for more "stylish" info windows
<html>
<head>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false">
</script>
<script>
//adapded from this example http://code.google.com/apis/maps/documentation/javascript/overlays.html#CustomOverlays
//text overlays
function TxtOverlay(pos, txt, cls, map) {
// Now initialize all properties.
this.pos = pos;
this.txt_ = txt;
this.cls_ = cls;
this.map_ = map;
// We define a property to hold the image's
// div. We'll actually create this div
// upon receipt of the add() method so we'll
// leave it null for now.
this.div_ = null;
// Explicitly call setMap() on this overlay
this.setMap(map);
}
TxtOverlay.prototype = new google.maps.OverlayView();
TxtOverlay.prototype.onAdd = function() {
// Note: an overlay's receipt of onAdd() indicates that
// the map's panes are now available for attaching
// the overlay to the map via the DOM.
// Create the DIV and set some basic attributes.
var div = document.createElement('DIV');
div.className = this.cls_;
div.innerHTML = this.txt_;
// Set the overlay's div_ property to this DIV
this.div_ = div;
var overlayProjection = this.getProjection();
var position = overlayProjection.fromLatLngToDivPixel(this.pos);
div.style.left = position.x + 'px';
div.style.top = position.y + 'px';
// We add an overlay to a map via one of the map's panes.
var panes = this.getPanes();
panes.floatPane.appendChild(div);
}
TxtOverlay.prototype.draw = function() {
var overlayProjection = this.getProjection();
// Retrieve the southwest and northeast coordinates of this overlay
// in latlngs and convert them to pixels coordinates.
// We'll use these coordinates to resize the DIV.
var position = overlayProjection.fromLatLngToDivPixel(this.pos);
var div = this.div_;
div.style.left = position.x + 'px';
div.style.top = position.y + 'px';
}
//Optional: helper methods for removing and toggling the text overlay.
TxtOverlay.prototype.onRemove = function() {
this.div_.parentNode.removeChild(this.div_);
this.div_ = null;
}
TxtOverlay.prototype.hide = function() {
if (this.div_) {
this.div_.style.visibility = "hidden";
}
}
TxtOverlay.prototype.show = function() {
if (this.div_) {
this.div_.style.visibility = "visible";
}
}
TxtOverlay.prototype.toggle = function() {
if (this.div_) {
if (this.div_.style.visibility == "hidden") {
this.show();
} else {
this.hide();
}
}
}
TxtOverlay.prototype.toggleDOM = function() {
if (this.getMap()) {
this.setMap(null);
} else {
this.setMap(this.map_);
}
}
var map;
function init() {
var latlng = new google.maps.LatLng(37.9069, -122.0792);
var myOptions = {
zoom: 4,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), myOptions);
var marker = new google.maps.Marker({
position: latlng,
map: map,
title: "Hello World!"
});
customTxt = "<div>Blah blah sdfsddddddddddddddd ddddddddddddddddddddd<ul><li>Blah 1<li>blah 2 </ul></div>"
txt = new TxtOverlay(latlng, customTxt, "customBox", map)
}
</script>
<style>
.customBox {
background: yellow;
border: 1px solid black;
position: absolute;
}
</style>
</head>
<body onload="init()">
<div id="map" style="width: 600px; height: 600px;">
</div>
</body>
</html>
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