例－４：地図に自作のボタンを表示する

サンプルプログラム
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <title>Google Maps JavaScript API Example</title>
    <script src="http://maps.google.com/maps?file=api&v=2&key=[あなたのAPIキー]" type="text/javascript"></script>
    <script type="text/javascript">
    //<![CDATA[

    var map;
    function myButton() {}

    myButton.prototype = new GControl();

    myButton.prototype.initialize = function(map) {
        var container = document.createElement("div");

        var myBtn = document.createElement("div");
        this.setPanelStyle_(myBtn);
        container.appendChild(myBtn);
        myBtn.appendChild(document.createTextNode("myButton"));

        GEvent.addDomListener(myBtn, "click", function() {
          alert("これは自作ボタンです");
        });

        map.getContainer().appendChild(container);
        return container;
    }

    myButton.prototype.getDefaultPosition = function() {
        return new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(10, 15));
    }

    myButton.prototype.setPanelStyle_ = function(panel) {
        panel.style.textDecoration = "underline";
        panel.style.color = "#0000cc";
        panel.style.backgroundColor = "white";
        panel.style.font = "small Arial";
        panel.style.border = "1px solid black";
        panel.style.padding = "2px";
        panel.style.marginBottom = "3px";
        panel.style.textAlign = "center";
        panel.style.width = "140px";
        panel.style.cursor = "pointer";
    }

    function load() {
      if (GBrowserIsCompatible()) {

        //地図を作成
        map = new GMap2(document.getElementById("map"));
        map.setCenter(new GLatLng(35.677335,139.744613), 16);

        //自作ボタンの追加
        map.addControl(new myButton());

      }
    }
    //]]>
    </script>
  </head>
  <body onload="load()" onunload="GUnload()">
    <div id="map" style="width: 500px; height: 500px"></div>
  </body>
</html>
投票数:1 平均点:0.00
この記事の1行目に飛ぶ