javascript - 带有 Google map 绘图的自定义按钮

Question

我正在使用与 Google map 关联的绘图工具:

var drawingManager = new google.maps.drawing.DrawingManager({
        drawingMode: google.maps.drawing.OverlayType.Marker,
        drawingControl: true,
        drawingControlOptions: {
            position: google.maps.ControlPosition.Top_Center,
            drawingModes: [
                google.maps.drawing.OverlayType.POLYGON,
            ]
        },
    });
    drawingManager.setMap(map);

这很好用，但我想知道如何使用自定义按钮而不是多边形工具的默认控件。这样当我按下按钮时它处于事件状态，当我再次按下它时它会停用。

这是我的自定义工具栏:

<div id="toolbar-container" class="toolbar-container">
    <div class="toolbar no-select">
        <div class="toolbar-button" id="clear-button">Clear Polygon</div>
        <div class="toolbar-button" id="polygon-button">Polygon</div>
    </div>
</div>

我尝试查看 API，但找不到任何内容。

作为引用，这是我使用的网站: https://developers.google.com/maps/documentation/javascript/examples/drawing-tools

如有任何帮助，我们将不胜感激!

Answer 1

在Google Maps API 中有一个预定义的方法来创建新的自定义控件和事件处理。 .

我已经在 initialize() 函数中创建了新控件

// Create the DIV to hold the control and call the HomeControl() constructor
    var homeControlDiv = document.createElement('div');
    var homeControl = new HomeControl(homeControlDiv, map);

    homeControlDiv.index = 1;
    map.controls[google.maps.ControlPosition.TOP_CENTER].push(homeControlDiv);

//To set CSS and handling event for the control
    function HomeControl(controlDiv, map) {
        // Set CSS for the control border.
        var controlUI = document.createElement('div');
        controlUI.style.backgroundColor = 'blue';       
        controlUI.style.height = '23px';
        controlUI.style.marginTop = '5px';
        controlUI.style.marginLeft = '-9px';
        controlUI.style.paddingTop = '1px';
        controlUI.style.cursor = 'pointer';        
        controlUI.title = 'Your Custom function..';
        controlDiv.appendChild(controlUI);

        // Set CSS for the control interior.
        var controlText = document.createElement('div');
        controlText.style.padding = '11px';
        controlText.innerHTML = 'Custom Text';
        controlText.style.color = '#fff';    
        controlUI.appendChild(controlText);

        // Setup the click event listeners
        google.maps.event.addDomListener(controlUI, 'click', function () {
            alert('Your Custom function..');            
        });
    }

希望这对你有帮助..看看我的 fiddle here