如何移动谷歌地图的中心位置 [英] How to move the center position of google map

查看:199
本文介绍了如何移动谷歌地图的中心位置的处理方法,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

  var mapElement,
parent,
mapOptions,
map,
标记,
latLong,
openMarker;

parent = document.getElementsByClassName('parent')[0];
mapElement = document.createElement('div');
latLong = new google.maps.LatLng(some_lat_from_db,some_long_from_db);

mapOptions = {
center:latLong,
zoom:14,
mapTypeId:google.maps.MapTypeId.ROADMAP
};

map = new google.maps.Map(mapElement,mapOptions);
marker = new google.maps.Marker({
position:latLong,
map:map,
title:'some title'
});

openMarker = function(){
var infowindow = new google.maps.InfoWindow();
infowindow.setContent('Some Content');
infowindow.open(map,marker);
};

google.maps.event.addListener(标记,'click',openMarker);
parent.appendChild(mapElement);
openMarker();

使用此代码时,默认打开的infowindow会超出地图视口,因此不会可见。我首先尝试减小信息窗口的大小,但没有成功。所以我想移动一下地图的中心,以便信息窗口保留在视口中。



那么,我怎样才能将中心移动一些像素,这样信息窗口保留在视口中?

解决方案

您可以使用 .setCenter() 移动地图中心

  map.setCenter(marker.getPosition()); 

更新

使用 LatLng rel = noreferrer> fromLatLngToDivPixel()转换为 Point 添加一个偏移量,并使用 LatLng developers.google.com/maps/documentation/javascript/reference?hl=de#MapCanvasProjectionrel =noreferrer>。fromDivPixelToLatLng()


I am creating a google map in a script with the following code -

var mapElement,
    parent,
    mapOptions,
    map,
    marker,
    latLong,
    openMarker;

parent = document.getElementsByClassName('parent')[0];
mapElement = document.createElement('div');
latLong = new google.maps.LatLng(some_lat_from_db, some_long_from_db);

mapOptions = {
    center: latLong,
    zoom: 14,
    mapTypeId: google.maps.MapTypeId.ROADMAP
};

map = new google.maps.Map(mapElement, mapOptions);
marker = new google.maps.Marker({
    position: latLong,
    map: map,
    title: 'some title'
});

openMarker = function () {
    var infowindow = new google.maps.InfoWindow();
    infowindow.setContent('Some Content');
    infowindow.open(map, marker);
};

google.maps.event.addListener(marker, 'click', openMarker);
parent.appendChild(mapElement);
openMarker();

When using this code, the infowindow that opens up by default goes outside the map viewport, so it's not visible. I first tried to reduce the size of the info window but that didn't work out. So I thought to move the center of the map a bit so that the info window remains in the viewport.

So, how can I move the center by some pixels so that the info window remains in the viewport?

解决方案

You can use .setCenter() to move the center of the map

map.setCenter(marker.getPosition());

Update

Convert the LatLng with .fromLatLngToDivPixel() into a Point add an offset and convert it back into a LatLng with .fromDivPixelToLatLng()

这篇关于如何移动谷歌地图的中心位置的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆