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标题: Google Maps实现右键菜单 [打印本页]

作者: 杨竹青 时间: 2008-07-29 13:52
标题: Google Maps实现右键菜单
java 代码
GEvent.addListener(map,"singlerightclick",function(pixel,tile, marker) {
      // store the "pixel" info in case we need it later
      // adjust the context menu location if near an egde
      // create a GControlPosition
      // apply it to the context menu, and make the context menu visible
      clickedPixel = pixel;
      var x=pixel.x;
      var y=pixel.y;
      if (x > map.getSize().width - 120) { x = map.getSize().width - 120 }
      if (y > map.getSize().height - 100) { y = map.getSize().height - 100 }
      var pos = new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(x,y));
      pos.apply(contextmenu);
if(marker){
         contextmenu.style.visibility = "visible";
}
   });

但是好像行不通，不管在不在marker上点击鼠标右键if(marker)永远成立，这可把我难住了，怎么办呢？经过一番的探索我发现这个事件的第二个参数"src"里面有一个property叫做:__marker__，是不是这就是我要找的?于是我就把代码改成这个样子：

java 代码
if (GBrowserIsCompatible()) {

   // === Global variable that can be used by the context handling functions ==
   var clickedPixel;

   var map = new GMap2(document.getElementById("map"));
   map.addControl(new GLargeMapControl());
   map.addControl(new GMapTypeControl());
   map.setCenter(new GLatLng(43,-79),8);
   var marker = new GMarker(new GLatLng(43,-79),{title:"center"});
   map.addOverlay(marker);
   ...
   // === listen for singlerightclick ===
   GEvent.addListener(map,"singlerightclick",function(pixel,tile, marker) {
      // store the "pixel" info in case we need it later
      // adjust the context menu location if near an egde
      // create a GControlPosition
      // apply it to the context menu, and make the context menu visible
      clickedPixel = pixel;
      var x=pixel.x;
      var y=pixel.y;
      if (x > map.getSize().width - 120) { x = map.getSize().width - 120 }
      if (y > map.getSize().height - 100) { y = map.getSize().height - 100 }
      var pos = new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(x,y));
      pos.apply(contextmenu);
if(tile.__marker__){alert(tile.__marker__)
         contextmenu.style.visibility = "visible";
}else{
      contextmenu.style.visibility = "hidden";
}
   });

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