# Control

# 目前支持的控件

目前支持的控件有:

  • 导航条控件 NavigationControl
  • 比例尺控件 ScaleControl
  • 全屏控件 FullscreenControl
  • 鼠标位置控件 MousePositionControl

# 示例



#

// 比例尺控件
let scaleControl = scaleControl = new vjmap.ScaleControl();
map.addControl(scaleControl, "bottom-left");

// 导航条控件
let navigationControl = navigationControl = new vjmap.NavigationControl();
map.addControl(navigationControl, "top-right");

// 全屏控件
let fullScreenControl = new vjmap.FullscreenControl();
map.addControl(fullScreenControl, "bottom-right");

// 鼠标位置控件
let mousePositionControl =  new vjmap.MousePositionControl();
map.addControl(mousePositionControl, "top-left");
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# 自定义控件

# 示例

// 自定义显示缩放级的控件
class CustomShowZoomControl {
    constructor(options = {}) {
        this.style = options.style || {};// 样式
    }
    _insertControl() {
        this.container = document.createElement("div");
        this.container.classList.add("vjmap-ctrl");

        this.container.style.border = this.style.border || "1px";
        this.container.style.backgroundColor = this.style.backgroundColor || "#A0CFFF";

        this.panel = document.createElement("div");
        this._zoomend();
        this.container.appendChild(this.panel);
    }
    _zoomend() {
        let strZoom = `当前级别: ${this.map.getZoom().toFixed(2)}`
        this.panel.innerHTML = strZoom;
    }
    onAdd(map) {
        this.map = map;
        this._insertControl();
        this.map.on("zoomend", this._zoomend.bind(this));
        return this.container;
    }

    onRemove() {
        this.map.off("zoomend", this._zoomend.bind(this));
        this.container.parentNode.removeChild(this.container);
    }

    getDefaultPosition() {
        return "bottom-left";
    }
}

let control = new CustomShowZoomControl({style: {border : "1px"}})
map.addControl(control);
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