目前在vue中使用google map有以下兩種方法：
一、使用 JavaScript 建立地圖執行個體
該方法優點在于可配置項多，友善自定義，缺點是較複雜，且文檔為英文，有一定學習難度。
在開始之前確定你已經在
https://console.cloud.google.com/google/maps-apis/overview
（谷歌地圖API官網）建立賬戶、開通并啟用以下API，最後擷取到你的Google Map JavaScript API Key，并且有科學上網的辦法
Directions API 為路徑規劃API，而Maps JavaScript API是基礎地圖展示所需的API
然後在
index.html
的
head
标簽中引入
如果不在 head 标簽中引入的話會出現建立地圖時用到的方法未定義的問題，是以需要先使檔案加載完成後再初始化地圖
國内通路的話目前是沒有辦法的
<script src="http://ditu.google.cn/maps/api/js?&key=YOUR_KEY"></script> // 國内通路方式，已不再支援
YOUR_KEY 為你的API Key
在你的vue檔案中，建立一個 id 為 gMap 的
div
，并且指定寬度和高度，不然會無法顯示。然後建立
initMap
方法來初始化地圖執行個體，最後在
mounted
鈎子函數中調用，不然容易出現 google undefined 的錯誤
圖例（僅供參考）：
代碼：
<template>
<div class="map-main" id="gMap"></div>
</template>
<script>
// MarkerWithLabel.js 如果引入不生效的話，可以把内容複制到這裡
export default {
name: 'FB_map',
data() {
map: null,
markers:[
{
name: 'william',
url: require('../../assets/signIn.png'),
position: {
lat: 45.51118967089818,
lng: -73.63236753474335
}
}
]
},
mounted() {
this.initMap() // vue執行個體挂載完成後初始化地圖
},
methods: {
initMap() {
this.map = new google.maps.Map(document.getElementById('gMap'), {
zoom: 12, // 縮放的數值
center: this.markers[0].position, // 将第一個marker的坐标作為地圖中心的坐标點
mapTypeId: google.maps.MapTypeId.ROADMAP // 地圖類别
});
// 周遊标記的數組
this.markers.map(item => {
let marker = new MarkerWithLabel({
position: item.position,
icon: {
url: require('../../assets/signIn.png'), // 你的 icon 路徑
scaledSize: new google.maps.Size(60, 60), // icon 的位置
//origin: new google.maps.Point(0, 0), // origin
// labelOrigin: { x: 25, y: 50} // label 的位置
},
draggable: false, // 是否可拖動
map: this.map, // 綁定的地圖執行個體
labelAnchor: new google.maps.Point(30, 60), // label 的位置
labelClass: '' // label 的 class
});
marker.addListener("click", () => { // 為标記添加點選事件
map.setCenter(item.position) // 每次點選标記會将地圖的中心定位到标記
marker.set('labelClass', 'labels'); // 每次點選标記會設定label的class為labels
})
// var infowindow = new google.maps.InfoWindow({ // 資訊視窗
// content: item.name
// });
// marker.addListener("mouseover", () => { // hover 觸發資訊視窗
// infowindow.open(this.map, marker);
// });
// marker.addListener("mouseout", () => {
// infowindow.close(this.map, marker);
// });
})
}
},
}
</script>
<style>
.map-main {
width: 100%;
height: 500px;
border-radius: 10px;
overflow: hidden;
}
.labels { // 如果 labels 樣式不生效看看 style 标簽的 scoped 是否去掉
height: 52px;
width: 52px;
border-radius: 50%;
border: 4px solid #6c62db;
}
</style>
二、使用vue2-google-maps
該方法優點在于使用友善，無需使用 js 建立地圖的執行個體，缺點在于自定義範圍小，如無法自定義
label
的樣式
1.安裝
在開始前我們需要安裝一下相關依賴：
npm install vue2-google-maps
2.配置
然後到
main.js
檔案中，添加如下配置：
import * as VueGoogleMaps from 'vue2-google-maps'
Vue.use(VueGoogleMaps, {
load: {
key: "YOUR_API_KEY"
}
})
YOUR_KEY 為你的API Key
3.使用
接下來就可以在你的vue檔案中正常使用了，注意不同于使用JavaScript建立地圖執行個體，我們使用到了
vue2-google-maps
中自帶的元件
<GmapMap>
以及
<GmapMarker>
圖例：
代碼（無需使用 js 建立地圖執行個體）：
<template>
<div class="map-container">
<div class="map-main">
<GmapMap :center='center' :zoom='12' ref="mapRef" class="map-main">
<GmapMarker @dragend="updateMaker" :key="index" v-for="(marker, index) in markers" :position="marker.position" :clickable="true" :icon="marker.markerData" @click="center=marker.position" class="map-marker" :label="marker.label"></GmapMarker>
</GmapMap>
<!--
label：需要傳入圖示的标簽配置
position：需要傳入地圖示記的坐标
clickable：需要傳入布爾類型的值，控制地圖示記是否可以點選
icon：地圖示記的圖示路徑
@click：标記點選事件
@dragend：拖動結束觸發事件
-->
</div>
<template>
<script>
export default {
name: 'FB_map',
data() {
return {
markers: [
{
markerData: {
url: require('../../assets/signIn.png'),
size: {width: 60, height: 60, f: 'px', b: 'px',},
scaledSize: {width: 60, height: 60, f: 'px', b: 'px',},
labelOrigin: {x: 16, y: -10}
},
label: 'label',
position: {
lat: 45.53317193016025,
lng: -73.58580366167472
}
},
{
markerData: {
url: require('../../assets/logo.png'),
scaledSize: {width: 50, height: 50, f: 'px', b: 'px',}
},
label: {
text: 'label',
color: "black",
fontWeight: "bold",
fontSize: "12px"
},
title: 'fff',
position: {
lat: 45.49118967089818,
lng: -73.62236753474335
}
}
],
center: {
lat: 45.508,
lng: -73.587
}
};
}
}
</script>
三、總結
| 方法 | 優點 | 缺點 |
|---|---|---|
| JavaScript建立地圖執行個體 | 可以詳細自定義地圖的各項配置，有官方文檔以及海量部落格來幫助學習和配置 | 相比另一種方法較為複雜，需要踩的坑也比較多 |
| 使用vue2-google-maps | 上手簡單，配置項雖然少但友善操作 | 配置項少，比如無法操作label樣式，相關問題解決的部落格相比起來比較少 |
四、 MarkerWithLabel.js
MarkerWithLabel.js
/**
* @name MarkerWithLabel for V3
* @version 1.1.8 [February 26, 2013]
* @author Gary Little (inspired by code from Marc Ridey of Google).
* @copyright Copyright 2012 Gary Little [gary at luxcentral.com]
* @fileoverview MarkerWithLabel extends the Google Maps JavaScript API V3
* <code>google.maps.Marker</code> class.
* <p>
* MarkerWithLabel allows you to define markers with associated labels. As you would expect,
* if the marker is draggable, so too will be the label. In addition, a marker with a label
* responds to all mouse events in the same manner as a regular marker. It also fires mouse
* events and "property changed" events just as a regular marker would. Version 1.1 adds
* support for the raiseOnDrag feature introduced in API V3.3.
* <p>
* If you drag a marker by its label, you can cancel the drag and return the marker to its
* original position by pressing the <code>Esc</code> key. This doesn't work if you drag the marker
* itself because this feature is not (yet) supported in the <code>google.maps.Marker</code> class.
*/
/*!
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*jslint browser:true */
/*global document,google */
/**
* @param {Function} childCtor Child class.
* @param {Function} parentCtor Parent class.
*/
function inherits(childCtor, parentCtor) {
/** @constructor */
function tempCtor() {};
tempCtor.prototype = parentCtor.prototype;
childCtor.superClass_ = parentCtor.prototype;
childCtor.prototype = new tempCtor();
/** @override */
childCtor.prototype.constructor = childCtor;
}
/**
* This constructor creates a label and associates it with a marker.
* It is for the private use of the MarkerWithLabel class.
* @constructor
* @param {Marker} marker The marker with which the label is to be associated.
* @param {string} crossURL The URL of the cross image =.
* @param {string} handCursor The URL of the hand cursor.
* @private
*/
function MarkerLabel_(marker, crossURL, handCursorURL) {
this.marker_ = marker;
this.handCursorURL_ = marker.handCursorURL;
this.labelDiv_ = document.createElement("div");
this.labelDiv_.style.cssText = "position: absolute; overflow: hidden;";
// Set up the DIV for handling mouse events in the label. This DIV forms a transparent veil
// in the "overlayMouseTarget" pane, a veil that covers just the label. This is done so that
// events can be captured even if the label is in the shadow of a google.maps.InfoWindow.
// Code is included here to ensure the veil is always exactly the same size as the label.
this.eventDiv_ = document.createElement("div");
this.eventDiv_.style.cssText = this.labelDiv_.style.cssText;
// This is needed for proper behavior on MSIE:
this.eventDiv_.setAttribute("onselectstart", "return false;");
this.eventDiv_.setAttribute("ondragstart", "return false;");
// Get the DIV for the "X" to be displayed when the marker is raised.
this.crossDiv_ = MarkerLabel_.getSharedCross(crossURL);
}
inherits(MarkerLabel_, google.maps.OverlayView);
/**
* Returns the DIV for the cross used when dragging a marker when the
* raiseOnDrag parameter set to true. One cross is shared with all markers.
* @param {string} crossURL The URL of the cross image =.
* @private
*/
MarkerLabel_.getSharedCross = function (crossURL) {
var div;
if (typeof MarkerLabel_.getSharedCross.crossDiv === "undefined") {
div = document.createElement("img");
div.style.cssText = "position: absolute; z-index: 1000002; display: none;";
// Hopefully Google never changes the standard "X" attributes:
div.style.marginLeft = "-8px";
div.style.marginTop = "-9px";
div.src = crossURL;
MarkerLabel_.getSharedCross.crossDiv = div;
}
return MarkerLabel_.getSharedCross.crossDiv;
};
/**
* Adds the DIV representing the label to the DOM. This method is called
* automatically when the marker's <code>setMap</code> method is called.
* @private
*/
MarkerLabel_.prototype.onAdd = function () {
var me = this;
var cMouseIsDown = false;
var cDraggingLabel = false;
var cSavedZIndex;
var cLatOffset, cLngOffset;
var cIgnoreClick;
var cRaiseEnabled;
var cStartPosition;
var cStartCenter;
// Constants:
var cRaiseOffset = 20;
var cDraggingCursor = "url(" + this.handCursorURL_ + ")";
// Stops all processing of an event.
//
var cAbortEvent = function (e) {
if (e.preventDefault) {
e.preventDefault();
}
e.cancelBubble = true;
if (e.stopPropagation) {
e.stopPropagation();
}
};
var cStopBounce = function () {
me.marker_.setAnimation(null);
};
this.getPanes().overlayImage.appendChild(this.labelDiv_);
this.getPanes().overlayMouseTarget.appendChild(this.eventDiv_);
// One cross is shared with all markers, so only add it once:
if (typeof MarkerLabel_.getSharedCross.processed === "undefined") {
this.getPanes().overlayImage.appendChild(this.crossDiv_);
MarkerLabel_.getSharedCross.processed = true;
}
this.listeners_ = [
google.maps.event.addDomListener(this.eventDiv_, "mouseover", function (e) {
if (me.marker_.getDraggable() || me.marker_.getClickable()) {
this.style.cursor = "pointer";
google.maps.event.trigger(me.marker_, "mouseover", e);
}
}),
google.maps.event.addDomListener(this.eventDiv_, "mouseout", function (e) {
if ((me.marker_.getDraggable() || me.marker_.getClickable()) && !cDraggingLabel) {
this.style.cursor = me.marker_.getCursor();
google.maps.event.trigger(me.marker_, "mouseout", e);
}
}),
google.maps.event.addDomListener(this.eventDiv_, "mousedown", function (e) {
cDraggingLabel = false;
if (me.marker_.getDraggable()) {
cMouseIsDown = true;
this.style.cursor = cDraggingCursor;
}
if (me.marker_.getDraggable() || me.marker_.getClickable()) {
google.maps.event.trigger(me.marker_, "mousedown", e);
cAbortEvent(e); // Prevent map pan when starting a drag on a label
}
}),
google.maps.event.addDomListener(document, "mouseup", function (mEvent) {
var position;
if (cMouseIsDown) {
cMouseIsDown = false;
me.eventDiv_.style.cursor = "pointer";
google.maps.event.trigger(me.marker_, "mouseup", mEvent);
}
if (cDraggingLabel) {
if (cRaiseEnabled) { // Lower the marker & label
position = me.getProjection().fromLatLngToDivPixel(me.marker_.getPosition());
position.y += cRaiseOffset;
me.marker_.setPosition(me.getProjection().fromDivPixelToLatLng(position));
// This is not the same bouncing style as when the marker portion is dragged,
// but it will have to do:
try { // Will fail if running Google Maps API earlier than V3.3
me.marker_.setAnimation(google.maps.Animation.BOUNCE);
setTimeout(cStopBounce, 1406);
} catch (e) {}
}
me.crossDiv_.style.display = "none";
me.marker_.setZIndex(cSavedZIndex);
cIgnoreClick = true; // Set flag to ignore the click event reported after a label drag
cDraggingLabel = false;
mEvent.latLng = me.marker_.getPosition();
google.maps.event.trigger(me.marker_, "dragend", mEvent);
}
}),
google.maps.event.addListener(me.marker_.getMap(), "mousemove", function (mEvent) {
var position;
if (cMouseIsDown) {
if (cDraggingLabel) {
// Change the reported location from the mouse position to the marker position:
mEvent.latLng = new google.maps.LatLng(mEvent.latLng.lat() - cLatOffset, mEvent.latLng.lng() - cLngOffset);
position = me.getProjection().fromLatLngToDivPixel(mEvent.latLng);
if (cRaiseEnabled) {
me.crossDiv_.style.left = position.x + "px";
me.crossDiv_.style.top = position.y + "px";
me.crossDiv_.style.display = "";
position.y -= cRaiseOffset;
}
me.marker_.setPosition(me.getProjection().fromDivPixelToLatLng(position));
if (cRaiseEnabled) { // Don't raise the veil; this hack needed to make MSIE act properly
me.eventDiv_.style.top = (position.y + cRaiseOffset) + "px";
}
google.maps.event.trigger(me.marker_, "drag", mEvent);
} else {
// Calculate offsets from the click point to the marker position:
cLatOffset = mEvent.latLng.lat() - me.marker_.getPosition().lat();
cLngOffset = mEvent.latLng.lng() - me.marker_.getPosition().lng();
cSavedZIndex = me.marker_.getZIndex();
cStartPosition = me.marker_.getPosition();
cStartCenter = me.marker_.getMap().getCenter();
cRaiseEnabled = me.marker_.get("raiseOnDrag");
cDraggingLabel = true;
me.marker_.setZIndex(1000000); // Moves the marker & label to the foreground during a drag
mEvent.latLng = me.marker_.getPosition();
google.maps.event.trigger(me.marker_, "dragstart", mEvent);
}
}
}),
google.maps.event.addDomListener(document, "keydown", function (e) {
if (cDraggingLabel) {
if (e.keyCode === 27) { // Esc key
cRaiseEnabled = false;
me.marker_.setPosition(cStartPosition);
me.marker_.getMap().setCenter(cStartCenter);
google.maps.event.trigger(document, "mouseup", e);
}
}
}),
google.maps.event.addDomListener(this.eventDiv_, "click", function (e) {
if (me.marker_.getDraggable() || me.marker_.getClickable()) {
if (cIgnoreClick) { // Ignore the click reported when a label drag ends
cIgnoreClick = false;
} else {
google.maps.event.trigger(me.marker_, "click", e);
cAbortEvent(e); // Prevent click from being passed on to map
}
}
}),
google.maps.event.addDomListener(this.eventDiv_, "dblclick", function (e) {
if (me.marker_.getDraggable() || me.marker_.getClickable()) {
google.maps.event.trigger(me.marker_, "dblclick", e);
cAbortEvent(e); // Prevent map zoom when double-clicking on a label
}
}),
google.maps.event.addListener(this.marker_, "dragstart", function (mEvent) {
if (!cDraggingLabel) {
cRaiseEnabled = this.get("raiseOnDrag");
}
}),
google.maps.event.addListener(this.marker_, "drag", function (mEvent) {
if (!cDraggingLabel) {
if (cRaiseEnabled) {
me.setPosition(cRaiseOffset);
// During a drag, the marker's z-index is temporarily set to 1000000 to
// ensure it appears above all other markers. Also set the label's z-index
// to 1000000 (plus or minus 1 depending on whether the label is supposed
// to be above or below the marker).
me.labelDiv_.style.zIndex = 1000000 + (this.get("labelInBackground") ? -1 : +1);
}
}
}),
google.maps.event.addListener(this.marker_, "dragend", function (mEvent) {
if (!cDraggingLabel) {
if (cRaiseEnabled) {
me.setPosition(0); // Also restores z-index of label
}
}
}),
google.maps.event.addListener(this.marker_, "position_changed", function () {
me.setPosition();
}),
google.maps.event.addListener(this.marker_, "zindex_changed", function () {
me.setZIndex();
}),
google.maps.event.addListener(this.marker_, "visible_changed", function () {
me.setVisible();
}),
google.maps.event.addListener(this.marker_, "labelvisible_changed", function () {
me.setVisible();
}),
google.maps.event.addListener(this.marker_, "title_changed", function () {
me.setTitle();
}),
google.maps.event.addListener(this.marker_, "labelcontent_changed", function () {
me.setContent();
}),
google.maps.event.addListener(this.marker_, "labelanchor_changed", function () {
me.setAnchor();
}),
google.maps.event.addListener(this.marker_, "labelclass_changed", function () {
me.setStyles();
}),
google.maps.event.addListener(this.marker_, "labelstyle_changed", function () {
me.setStyles();
})
];
};
/**
* Removes the DIV for the label from the DOM. It also removes all event handlers.
* This method is called automatically when the marker's <code>setMap(null)</code>
* method is called.
* @private
*/
MarkerLabel_.prototype.onRemove = function () {
var i;
this.labelDiv_.parentNode.removeChild(this.labelDiv_);
this.eventDiv_.parentNode.removeChild(this.eventDiv_);
// Remove event listeners:
for (i = 0; i < this.listeners_.length; i++) {
google.maps.event.removeListener(this.listeners_[i]);
}
};
/**
* Draws the label on the map.
* @private
*/
MarkerLabel_.prototype.draw = function () {
this.setContent();
this.setTitle();
this.setStyles();
};
/**
* Sets the content of the label.
* The content can be plain text or an HTML DOM node.
* @private
*/
MarkerLabel_.prototype.setContent = function () {
var content = this.marker_.get("labelContent");
if (typeof content.nodeType === "undefined") {
this.labelDiv_.innerHTML = content;
this.eventDiv_.innerHTML = this.labelDiv_.innerHTML;
} else {
this.labelDiv_.innerHTML = ""; // Remove current content
this.labelDiv_.appendChild(content);
content = content.cloneNode(true);
this.eventDiv_.appendChild(content);
}
};
/**
* Sets the content of the tool tip for the label. It is
* always set to be the same as for the marker itself.
* @private
*/
MarkerLabel_.prototype.setTitle = function () {
this.eventDiv_.title = this.marker_.getTitle() || "";
};
/**
* Sets the style of the label by setting the style sheet and applying
* other specific styles requested.
* @private
*/
MarkerLabel_.prototype.setStyles = function () {
var i, labelStyle;
// Apply style values from the style sheet defined in the labelClass parameter:
this.labelDiv_.className = this.marker_.get("labelClass");
this.eventDiv_.className = this.labelDiv_.className;
// Clear existing inline style values:
this.labelDiv_.style.cssText = "";
this.eventDiv_.style.cssText = "";
// Apply style values defined in the labelStyle parameter:
labelStyle = this.marker_.get("labelStyle");
for (i in labelStyle) {
if (labelStyle.hasOwnProperty(i)) {
this.labelDiv_.style[i] = labelStyle[i];
this.eventDiv_.style[i] = labelStyle[i];
}
}
this.setMandatoryStyles();
};
/**
* Sets the mandatory styles to the DIV representing the label as well as to the
* associated event DIV. This includes setting the DIV position, z-index, and visibility.
* @private
*/
MarkerLabel_.prototype.setMandatoryStyles = function () {
this.labelDiv_.style.position = "absolute";
this.labelDiv_.style.overflow = "hidden";
// Make sure the opacity setting causes the desired effect on MSIE:
if (typeof this.labelDiv_.style.opacity !== "undefined" && this.labelDiv_.style.opacity !== "") {
this.labelDiv_.style.MsFilter = "\"progid:DXImageTransform.Microsoft.Alpha(opacity=" + (this.labelDiv_.style.opacity * 100) + ")\"";
this.labelDiv_.style.filter = "alpha(opacity=" + (this.labelDiv_.style.opacity * 100) + ")";
}
this.eventDiv_.style.position = this.labelDiv_.style.position;
this.eventDiv_.style.overflow = this.labelDiv_.style.overflow;
this.eventDiv_.style.opacity = 0.01; // Don't use 0; DIV won't be clickable on MSIE
this.eventDiv_.style.MsFilter = "\"progid:DXImageTransform.Microsoft.Alpha(opacity=1)\"";
this.eventDiv_.style.filter = "alpha(opacity=1)"; // For MSIE
this.setAnchor();
this.setPosition(); // This also updates z-index, if necessary.
this.setVisible();
};
/**
* Sets the anchor point of the label.
* @private
*/
MarkerLabel_.prototype.setAnchor = function () {
var anchor = this.marker_.get("labelAnchor");
this.labelDiv_.style.marginLeft = -anchor.x + "px";
this.labelDiv_.style.marginTop = -anchor.y + "px";
this.eventDiv_.style.marginLeft = -anchor.x + "px";
this.eventDiv_.style.marginTop = -anchor.y + "px";
};
/**
* Sets the position of the label. The z-index is also updated, if necessary.
* @private
*/
MarkerLabel_.prototype.setPosition = function (yOffset) {
var position = this.getProjection().fromLatLngToDivPixel(this.marker_.getPosition());
if (typeof yOffset === "undefined") {
yOffset = 0;
}
this.labelDiv_.style.left = Math.round(position.x) + "px";
this.labelDiv_.style.top = Math.round(position.y - yOffset) + "px";
this.eventDiv_.style.left = this.labelDiv_.style.left;
this.eventDiv_.style.top = this.labelDiv_.style.top;
this.setZIndex();
};
/**
* Sets the z-index of the label. If the marker's z-index property has not been defined, the z-index
* of the label is set to the vertical coordinate of the label. This is in keeping with the default
* stacking order for Google Maps: markers to the south are in front of markers to the north.
* @private
*/
MarkerLabel_.prototype.setZIndex = function () {
var zAdjust = (this.marker_.get("labelInBackground") ? -1 : +1);
if (typeof this.marker_.getZIndex() === "undefined") {
this.labelDiv_.style.zIndex = parseInt(this.labelDiv_.style.top, 10) + zAdjust;
this.eventDiv_.style.zIndex = this.labelDiv_.style.zIndex;
} else {
this.labelDiv_.style.zIndex = this.marker_.getZIndex() + zAdjust;
this.eventDiv_.style.zIndex = this.labelDiv_.style.zIndex;
}
};
/**
* Sets the visibility of the label. The label is visible only if the marker itself is
* visible (i.e., its visible property is true) and the labelVisible property is true.
* @private
*/
MarkerLabel_.prototype.setVisible = function () {
if (this.marker_.get("labelVisible")) {
this.labelDiv_.style.display = this.marker_.getVisible() ? "block" : "none";
} else {
this.labelDiv_.style.display = "none";
}
this.eventDiv_.style.display = this.labelDiv_.style.display;
};
/**
* @name MarkerWithLabelOptions
* @class This class represents the optional parameter passed to the {@link MarkerWithLabel} constructor.
* The properties available are the same as for <code>google.maps.Marker</code> with the addition
* of the properties listed below. To change any of these additional properties after the labeled
* marker has been created, call <code>google.maps.Marker.set(propertyName, propertyValue)</code>.
* <p>
* When any of these properties changes, a property changed event is fired. The names of these
* events are derived from the name of the property and are of the form <code>propertyname_changed</code>.
* For example, if the content of the label changes, a <code>labelcontent_changed</code> event
* is fired.
* <p>
* @property {string|Node} [labelContent] The content of the label (plain text or an HTML DOM node).
* @property {Point} [labelAnchor] By default, a label is drawn with its anchor point at (0,0) so
* that its top left corner is positioned at the anchor point of the associated marker. Use this
* property to change the anchor point of the label. For example, to center a 50px-wide label
* beneath a marker, specify a <code>labelAnchor</code> of <code>google.maps.Point(25, 0)</code>.
* (Note: x-values increase to the right and y-values increase to the top.)
* @property {string} [labelClass] The name of the CSS class defining the styles for the label.
* Note that style values for <code>position</code>, <code>overflow</code>, <code>top</code>,
* <code>left</code>, <code>zIndex</code>, <code>display</code>, <code>marginLeft</code>, and
* <code>marginTop</code> are ignored; these styles are for internal use only.
* @property {Object} [labelStyle] An object literal whose properties define specific CSS
* style values to be applied to the label. Style values defined here override those that may
* be defined in the <code>labelClass</code> style sheet. If this property is changed after the
* label has been created, all previously set styles (except those defined in the style sheet)
* are removed from the label before the new style values are applied.
* Note that style values for <code>position</code>, <code>overflow</code>, <code>top</code>,
* <code>left</code>, <code>zIndex</code>, <code>display</code>, <code>marginLeft</code>, and
* <code>marginTop</code> are ignored; these styles are for internal use only.
* @property {boolean} [labelInBackground] A flag indicating whether a label that overlaps its
* associated marker should appear in the background (i.e., in a plane below the marker).
* The default is <code>false</code>, which causes the label to appear in the foreground.
* @property {boolean} [labelVisible] A flag indicating whether the label is to be visible.
* The default is <code>true</code>. Note that even if <code>labelVisible</code> is
* <code>true</code>, the label will <i>not</i> be visible unless the associated marker is also
* visible (i.e., unless the marker's <code>visible</code> property is <code>true</code>).
* @property {boolean} [raiseOnDrag] A flag indicating whether the label and marker are to be
* raised when the marker is dragged. The default is <code>true</code>. If a draggable marker is
* being created and a version of Google Maps API earlier than V3.3 is being used, this property
* must be set to <code>false</code>.
* @property {boolean} [optimized] A flag indicating whether rendering is to be optimized for the
* marker. <b>Important: The optimized rendering technique is not supported by MarkerWithLabel,
* so the value of this parameter is always forced to <code>false</code>.
* @property {string} [crossImage="http://maps.gstatic.com/intl/en_us/mapfiles/drag_cross_67_16.png"]
* The URL of the cross image to be displayed while dragging a marker.
* @property {string} [handCursor="http://maps.gstatic.com/intl/en_us/mapfiles/closedhand_8_8.cur"]
* The URL of the cursor to be displayed while dragging a marker.
*/
/**
* Creates a MarkerWithLabel with the options specified in {@link MarkerWithLabelOptions}.
* @constructor
* @param {MarkerWithLabelOptions} [opt_options] The optional parameters.
*/
function MarkerWithLabel(opt_options) {
opt_options = opt_options || {};
opt_options.labelContent = opt_options.labelContent || "";
opt_options.labelAnchor = opt_options.labelAnchor || new google.maps.Point(0, 0);
opt_options.labelClass = opt_options.labelClass || "markerLabels";
opt_options.labelStyle = opt_options.labelStyle || {};
opt_options.labelInBackground = opt_options.labelInBackground || false;
if (typeof opt_options.labelVisible === "undefined") {
opt_options.labelVisible = true;
}
if (typeof opt_options.raiseOnDrag === "undefined") {
opt_options.raiseOnDrag = true;
}
if (typeof opt_options.clickable === "undefined") {
opt_options.clickable = true;
}
if (typeof opt_options.draggable === "undefined") {
opt_options.draggable = false;
}
if (typeof opt_options.optimized === "undefined") {
opt_options.optimized = false;
}
opt_options.crossImage = opt_options.crossImage || "http" + (document.location.protocol === "https:" ? "s" : "") + "://maps.gstatic.com/intl/en_us/mapfiles/drag_cross_67_16.png";
opt_options.handCursor = opt_options.handCursor || "http" + (document.location.protocol === "https:" ? "s" : "") + "://maps.gstatic.com/intl/en_us/mapfiles/closedhand_8_8.cur";
opt_options.optimized = false; // Optimized rendering is not supported
this.label = new MarkerLabel_(this, opt_options.crossImage, opt_options.handCursor); // Bind the label to the marker
// Call the parent constructor. It calls Marker.setValues to initialize, so all
// the new parameters are conveniently saved and can be accessed with get/set.
// Marker.set triggers a property changed event (called "propertyname_changed")
// that the marker label listens for in order to react to state changes.
google.maps.Marker.apply(this, arguments);
}
inherits(MarkerWithLabel, google.maps.Marker);
/**
* Overrides the standard Marker setMap function.
* @param {Map} theMap The map to which the marker is to be added.
* @private
*/
MarkerWithLabel.prototype.setMap = function (theMap) {
// Call the inherited function...
google.maps.Marker.prototype.setMap.apply(this, arguments);
// ... then deal with the label:
this.label.setMap(theMap);
};
google.maps.MarkerWithLabel = MarkerWithLabel;
ues to initialize, so all
// the new parameters are conveniently saved and can be accessed with get/set.
// Marker.set triggers a property changed event (called "propertyname_changed")
// that the marker label listens for in order to react to state changes.
google.maps.Marker.apply(this, arguments);
}
inherits(MarkerWithLabel, google.maps.Marker);
/**
* Overrides the standard Marker setMap function.
* @param {Map} theMap The map to which the marker is to be added.
* @private
*/
MarkerWithLabel.prototype.setMap = function (theMap) {
// Call the inherited function...
google.maps.Marker.prototype.setMap.apply(this, arguments);
// ... then deal with the label:
this.label.setMap(theMap);
};
google.maps.MarkerWithLabel = MarkerWithLabel;