將自己的元作放到地圖上。

Google API

• GControl : This interface is implemented by all controls. 實作這個介面。

程式碼

執行範例

function TwControl() {}
TwControl.prototype = new GControl();
// 起始
TwControl.prototype.initialize = function(map) {
    var container = document.createElement("div");

    container.appendChild(this.createButton("台灣",23.639492, 120.783691, 8));
    container.appendChild(this.createButton("馬祖",26.162083,119.941472, 10));
    container.appendChild(this.createButton("金門",24.429333,118.315389, 10));

    map.getContainer().appendChild(container);
    return container;
}
// 預設位置
TwControl.prototype.getDefaultPosition = function() {
    return new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(7, 7));
}
// 建立按鈕
TwControl.prototype.createButton = function(name, lat, lng, zoom) {
    var div = document.createElement("div");
    this.setButtonStyle_(div);
    div.appendChild(document.createTextNode(name));
    GEvent.addDomListener(div, "click", function() {
      map.setCenter(new GLatLng(lat, lng), zoom);
    });
    return div;
}
// 設定按鈕樣式
TwControl.prototype.setButtonStyle_ = function(button) {
    button.style.textDecoration = "underline";
    button.style.color = "#0000cc";
    button.style.backgroundColor = "white";
    button.style.font = "small Arial";
    button.style.border = "1px solid black";
    button.style.padding = "2px";
    button.style.marginBottom = "3px";
    button.style.textAlign = "center";
    button.style.width = "6em";
    button.style.cursor = "pointer";
}

// 加入
map.addControl(new TwControl());

Filed under:
Google Map by klcintw