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JavaScript

/* eslint-disable */
/**
* @fileoverview 百度地图的鼠标绘制工具对外开放
* 允许用户在地图上点击完成鼠标绘制的功能
* 使用者可以自定义所绘制结果的相关样式例如线宽颜色测线段距离面积等等
* 主入口类是<a href="symbols/BMapGLLib.DrawingManager.html">DrawingManager</a>
* 基于Baidu Map API GL 1.0
*
* @author Baidu Map Api Group
* @version 1.0
*/
/**
* @namespace BMapGL的所有library类均放在BMapGLLib命名空间下
*/
var BMapGLLib = window.BMapGLLib = BMapGLLib || {};
/**
* 定义常量, 绘制的模式
* @final {Number} DrawingType
*/
var BMAP_DRAWING_MARKER = "marker", // 鼠标画点模式
BMAP_DRAWING_POLYLINE = "polyline", // 鼠标画线模式
BMAP_DRAWING_CIRCLE = "circle", // 鼠标画圆模式
BMAP_DRAWING_RECTANGLE = "rectangle", // 鼠标画矩形模式
BMAP_DRAWING_POLYGON = "polygon"; // 鼠标画多边形模式
(function() {
/**
* 声明baidu包
*/
var baidu = baidu || { guid: '$BAIDU$' };
(function () {
// 一些页面级别唯一的属性需要挂载在window[baidu.guid]上
window[baidu.guid] = {};
/**
* 将源对象的所有属性拷贝到目标对象中
* @name baidu.extend
* @function
* @grammar baidu.extend(target, source)
* @param {Object} target 目标对象
* @param {Object} source 源对象
* @returns {Object} 目标对象
*/
baidu.extend = function (target, source) {
for (var p in source) {
if (source.hasOwnProperty(p)) {
target[p] = source[p];
}
}
return target;
};
/**
* @ignore
* @namespace
* @baidu.lang 对语言层面的封装包括类型判断模块扩展继承基类以及对象自定义事件的支持
* @property guid 对象的唯一标识
*/
baidu.lang = baidu.lang || {};
/**
* 返回一个当前页面的唯一标识字符串
* @function
* @grammar baidu.lang.guid()
* @returns {String} 当前页面的唯一标识字符串
*/
baidu.lang.guid = function () {
return 'TANGRAM__' + (window[baidu.guid]._counter++).toString(36);
};
window[baidu.guid]._counter = window[baidu.guid]._counter || 1;
/**
* 所有类的实例的容器
* key为每个实例的guid
*/
window[baidu.guid]._instances = window[baidu.guid]._instances || {};
/**
* Tangram继承机制提供的一个基类用户可以通过继承baidu.lang.Class来获取它的属性及方法
* @function
* @name baidu.lang.Class
* @grammar baidu.lang.Class(guid)
* @param {string} guid 对象的唯一标识
* @meta standard
* @remark baidu.lang.Class和它的子类的实例均包含一个全局唯一的标识guid
* guid是在构造函数中生成的因此继承自baidu.lang.Class的类应该直接或者间接调用它的构造函数<br>
* baidu.lang.Class的构造函数中产生guid的方式可以保证guid的唯一性及每个实例都有一个全局唯一的guid
*/
baidu.lang.Class = function (guid) {
this.guid = guid || baidu.lang.guid();
window[baidu.guid]._instances[this.guid] = this;
};
window[baidu.guid]._instances = window[baidu.guid]._instances || {};
/**
* 判断目标参数是否string类型或String对象
* @name baidu.lang.isString
* @function
* @grammar baidu.lang.isString(source)
* @param {Any} source 目标参数
* @shortcut isString
* @meta standard
*
* @returns {boolean} 类型判断结果
*/
baidu.lang.isString = function (source) {
return '[object String]' == Object.prototype.toString.call(source);
};
/**
* 判断目标参数是否为function或Function实例
* @name baidu.lang.isFunction
* @function
* @grammar baidu.lang.isFunction(source)
* @param {Any} source 目标参数
* @returns {boolean} 类型判断结果
*/
baidu.lang.isFunction = function (source) {
return '[object Function]' == Object.prototype.toString.call(source);
};
/**
* 重载了默认的toString方法使得返回信息更加准确一些
* @return {string} 对象的String表示形式
*/
baidu.lang.Class.prototype.toString = function () {
return '[object ' + (this._className || 'Object') + ']';
};
/**
* 释放对象所持有的资源主要是自定义事件
* @name dispose
* @grammar obj.dispose()
*/
baidu.lang.Class.prototype.dispose = function () {
delete window[baidu.guid]._instances[this.guid];
for (var property in this) {
if (!baidu.lang.isFunction(this[property])) {
delete this[property];
}
}
this.disposed = true;
};
/**
* 自定义的事件对象
* @function
* @name baidu.lang.Event
* @grammar baidu.lang.Event(type[, target])
* @param {string} type 事件类型名称为了方便区分事件和一个普通的方法事件类型名称必须以"on"(小写)开头
* @param {Object} [target]触发事件的对象
* @meta standard
* @remark 引入该模块会自动为Class引入3个事件扩展方法addEventListenerremoveEventListener和dispatchEvent
* @see baidu.lang.Class
*/
baidu.lang.Event = function (type, target) {
this.type = type;
this.returnValue = true;
this.target = target || null;
this.currentTarget = null;
};
/**
* 注册对象的事件监听器引入baidu.lang.Event后Class的子类实例才会获得该方法
* @grammar obj.addEventListener(type, handler[, key])
* @param {string} type 自定义事件的名称
* @param {Function} handler 自定义事件被触发时应该调用的回调函数
* @param {string} [key] 为事件监听函数指定的名称可在移除时使用如果不提供方法会默认为它生成一个全局唯一的key
* @remark 事件类型区分大小写如果自定义事件名称不是以小写"on"开头该方法会给它加上"on"再进行判断"click""onclick"会被认为是同一种事件
*/
baidu.lang.Class.prototype.addEventListener = function (type, handler, key) {
if (!baidu.lang.isFunction(handler)) {
return;
}
!this.__listeners && (this.__listeners = {});
var t = this.__listeners,
id;
if (typeof key == 'string' && key) {
if (/[^\w\-]/.test(key)) {
throw ('nonstandard key:' + key);
} else {
handler.hashCode = key;
id = key;
}
}
type.indexOf('on') != 0 && (type = 'on' + type);
typeof t[type] != 'object' && (t[type] = {});
id = id || baidu.lang.guid();
handler.hashCode = id;
t[type][id] = handler;
};
/**
* 移除对象的事件监听器引入baidu.lang.Event后Class的子类实例才会获得该方法
* @grammar obj.removeEventListener(type, handler)
* @param {string} type 事件类型
* @param {Function|string} handler 要移除的事件监听函数或者监听函数的key
* @remark 如果第二个参数handler没有被绑定到对应的自定义事件中什么也不做
*/
baidu.lang.Class.prototype.removeEventListener = function (type, handler) {
if (baidu.lang.isFunction(handler)) {
handler = handler.hashCode;
} else if (!baidu.lang.isString(handler)) {
return;
}
!this.__listeners && (this.__listeners = {});
type.indexOf('on') != 0 && (type = 'on' + type);
var t = this.__listeners;
if (!t[type]) {
return;
}
t[type][handler] && delete t[type][handler];
};
/**
* 派发自定义事件使得绑定到自定义事件上面的函数都会被执行引入baidu.lang.Event后Class的子类实例才会获得该方法
* @grammar obj.dispatchEvent(event, options)
* @param {baidu.lang.Event|String} event Event对象或事件名称(1.1.1起支持)
* @param {Object} options 扩展参数,所含属性键值会扩展到Event对象上(1.2起支持)
* @remark 处理会调用通过addEventListenr绑定的自定义事件回调函数之外还会调用直接绑定到对象上面的自定义事件
* 例如<br>
* myobj.onMyEvent = function(){}<br>
* myobj.addEventListener("onMyEvent", function(){});
*/
baidu.lang.Class.prototype.dispatchEvent = function (event, options) {
if (baidu.lang.isString(event)) {
event = new baidu.lang.Event(event);
}
!this.__listeners && (this.__listeners = {});
options = options || {};
for (var i in options) {
event[i] = options[i];
}
var i,
t = this.__listeners,
p = event.type;
event.target = event.target || this;
event.currentTarget = this;
p.indexOf('on') != 0 && (p = 'on' + p);
baidu.lang.isFunction(this[p]) && this[p].apply(this, arguments);
if (typeof t[p] == 'object') {
for (i in t[p]) {
t[p][i].apply(this, arguments);
}
}
return event.returnValue;
};
/**
* 为类型构造器建立继承关系
* @name baidu.lang.inherits
* @function
* @grammar baidu.lang.inherits(subClass, superClass[, className])
* @param {Function} subClass 子类构造器
* @param {Function} superClass 父类构造器
* @param {string} className 类名标识
* @remark 使subClass继承superClass的prototype
* 因此subClass的实例能够使用superClass的prototype中定义的所有属性和方法<br>
* 这个函数实际上是建立了subClass和superClass的原型链集成并对subClass进行了constructor修正<br>
* <strong>注意如果要继承构造函数需要在subClass里面call一下具体见下面的demo例子</strong>
* @shortcut inherits
* @meta standard
* @see baidu.lang.Class
*/
baidu.lang.inherits = function (subClass, superClass, className) {
var key,
proto,
selfProps = subClass.prototype,
clazz = new Function();
clazz.prototype = superClass.prototype;
proto = subClass.prototype = new clazz();
for (key in selfProps) {
proto[key] = selfProps[key];
}
subClass.prototype.constructor = subClass;
subClass.superClass = superClass.prototype;
if ('string' == typeof className) {
proto._className = className;
}
};
/**
* @ignore
* @namespace baidu.dom 操作dom的方法
*/
baidu.dom = baidu.dom || {};
/**
* 从文档中获取指定的DOM元素
*
* @param {string|HTMLElement} id 元素的id或DOM元素
* @meta standard
* @return {HTMLElement} DOM元素如果不存在返回null如果参数不合法直接返回参数
*/
baidu._g = baidu.dom._g = function (id) {
if (baidu.lang.isString(id)) {
return document.getElementById(id);
}
return id;
};
/**
* 从文档中获取指定的DOM元素
* @name baidu.dom.g
* @function
* @grammar baidu.dom.g(id)
* @param {string|HTMLElement} id 元素的id或DOM元素
* @meta standard
*
* @returns {HTMLElement|null} 获取的元素查找不到时返回null,如果参数不合法直接返回参数
*/
baidu.g = baidu.dom.g = function (id) {
if ('string' == typeof id || id instanceof String) {
return document.getElementById(id);
} else if (id && id.nodeName && (id.nodeType == 1 || id.nodeType == 9)) {
return id;
}
return null;
};
/**
* 在目标元素的指定位置插入HTML代码
* @name baidu.dom.insertHTML
* @function
* @grammar baidu.dom.insertHTML(element, position, html)
* @param {HTMLElement|string} element 目标元素或目标元素的id
* @param {string} position 插入html的位置信息取值为beforeBegin,afterBegin,beforeEnd,afterEnd
* @param {string} html 要插入的html
* @remark
*
* 对于position参数大小写不敏感<br>
* 参数的意思beforeBegin&lt;span&gt;afterBegin this is span! beforeEnd&lt;/span&gt; afterEnd <br />
* 此外如果使用本函数插入带有script标签的HTML字符串script标签对应的脚本将不会被执行
*
* @shortcut insertHTML
* @meta standard
*
* @returns {HTMLElement} 目标元素
*/
baidu.insertHTML = baidu.dom.insertHTML = function (element, position, html) {
element = baidu.dom.g(element);
var range,
begin;
if (element.insertAdjacentHTML) {
element.insertAdjacentHTML(position, html);
} else {
// 这里不做"undefined" != typeof(HTMLElement) && !window.opera判断其它浏览器将出错
// 但是其实做了判断,其它浏览器下等于这个函数就不能执行了
range = element.ownerDocument.createRange();
// FF下range的位置设置错误可能导致创建出来的fragment在插入dom树之后html结构乱掉
// 改用range.insertNode来插入html, by wenyuxiang @ 2010-12-14.
position = position.toUpperCase();
if (position == 'AFTERBEGIN' || position == 'BEFOREEND') {
range.selectNodeContents(element);
range.collapse(position == 'AFTERBEGIN');
} else {
begin = position == 'BEFOREBEGIN';
range[begin ? 'setStartBefore' : 'setEndAfter'](element);
range.collapse(begin);
}
range.insertNode(range.createContextualFragment(html));
}
return element;
};
/**
* 为目标元素添加className
* @name baidu.dom.addClass
* @function
* @grammar baidu.dom.addClass(element, className)
* @param {HTMLElement|string} element 目标元素或目标元素的id
* @param {string} className 要添加的className允许同时添加多个class中间使用空白符分隔
* @remark
* 使用者应保证提供的className合法性不应包含不合法字符className合法字符参考http://www.w3.org/TR/CSS2/syndata.html。
* @shortcut addClass
* @meta standard
*
* @returns {HTMLElement} 目标元素
*/
baidu.ac = baidu.dom.addClass = function (element, className) {
element = baidu.dom.g(element);
var classArray = className.split(/\s+/),
result = element.className,
classMatch = ' ' + result + ' ',
i = 0,
l = classArray.length;
for (; i < l; i++) {
if (classMatch.indexOf(' ' + classArray[i] + ' ') < 0) {
result += (result ? ' ' : '') + classArray[i];
}
}
element.className = result;
return element;
};
/**
* @ignore
* @namespace baidu.event 屏蔽浏览器差异性的事件封装
* @property target 事件的触发元素
* @property pageX 鼠标事件的鼠标x坐标
* @property pageY 鼠标事件的鼠标y坐标
* @property keyCode 键盘事件的键值
*/
baidu.event = baidu.event || {};
/**
* 事件监听器的存储表
* @private
* @meta standard
*/
baidu.event._listeners = baidu.event._listeners || [];
/**
* 为目标元素添加事件监听器
* @name baidu.event.on
* @function
* @grammar baidu.event.on(element, type, listener)
* @param {HTMLElement|string|window} element 目标元素或目标元素id
* @param {string} type 事件类型
* @param {Function} listener 需要添加的监听器
* @remark
* 1. 不支持跨浏览器的鼠标滚轮事件监听器添加<br>
* 2. 改方法不为监听器灌入事件对象以防止跨iframe事件挂载的事件对象获取失败
* @shortcut on
* @meta standard
* @see baidu.event.un
*
* @returns {HTMLElement|window} 目标元素
*/
baidu.on = baidu.event.on = function (element, type, listener) {
type = type.replace(/^on/i, '');
element = baidu._g(element);
var realListener = function (ev) {
// 1. 这里不支持EventArgument, 原因是跨frame的事件挂载
// 2. element是为了修正this
listener.call(element, ev);
},
lis = baidu.event._listeners,
filter = baidu.event._eventFilter,
afterFilter,
realType = type;
type = type.toLowerCase();
// filter过滤
if (filter && filter[type]) {
afterFilter = filter[type](element, type, realListener);
realType = afterFilter.type;
realListener = afterFilter.listener;
}
// 事件监听器挂载
if (element.addEventListener) {
element.addEventListener(realType, realListener, false);
} else if (element.attachEvent) {
element.attachEvent('on' + realType, realListener);
}
// 将监听器存储到数组中
lis[lis.length] = [element, type, listener, realListener, realType];
return element;
};
/**
* 为目标元素移除事件监听器
* @name baidu.event.un
* @function
* @grammar baidu.event.un(element, type, listener)
* @param {HTMLElement|string|window} element 目标元素或目标元素id
* @param {string} type 事件类型
* @param {Function} listener 需要移除的监听器
* @shortcut un
* @meta standard
*
* @returns {HTMLElement|window} 目标元素
*/
baidu.un = baidu.event.un = function (element, type, listener) {
element = baidu._g(element);
type = type.replace(/^on/i, '').toLowerCase();
var lis = baidu.event._listeners,
len = lis.length,
isRemoveAll = !listener,
item,
realType,
realListener;
// 如果将listener的结构改成json
// 可以节省掉这个循环,优化性能
// 但是由于un的使用频率并不高同时在listener不多的时候
// 遍历数组的性能消耗不会对代码产生影响
// 暂不考虑此优化
while (len--) {
item = lis[len];
// listener存在时移除element的所有以listener监听的type类型事件
// listener不存在时移除element的所有type类型事件
if (item[1] === type
&& item[0] === element
&& (isRemoveAll || item[2] === listener)) {
realType = item[4];
realListener = item[3];
if (element.removeEventListener) {
element.removeEventListener(realType, realListener, false);
} else if (element.detachEvent) {
element.detachEvent('on' + realType, realListener);
}
lis.splice(len, 1);
}
}
return element;
};
/**
* 获取event事件,解决不同浏览器兼容问题
* @param {Event}
* @return {Event}
*/
baidu.getEvent = baidu.event.getEvent = function (event) {
return window.event || event;
};
/**
* 获取event.target,解决不同浏览器兼容问题
* @param {Event}
* @return {Target}
*/
baidu.getTarget = baidu.event.getTarget = function (event) {
var event = baidu.getEvent(event);
return event.target || event.srcElement;
};
/**
* 阻止事件的默认行为
* @name baidu.event.preventDefault
* @function
* @grammar baidu.event.preventDefault(event)
* @param {Event} event 事件对象
* @meta standard
*/
baidu.preventDefault = baidu.event.preventDefault = function (event) {
var event = baidu.getEvent(event);
if (event.preventDefault) {
event.preventDefault();
} else {
event.returnValue = false;
}
};
/**
* 停止事件冒泡传播
* @param {Event}
*/
baidu.stopBubble = baidu.event.stopBubble = function (event) {
event = baidu.getEvent(event);
event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true;
};
/**
* 判断是否为ie浏览器
* @property ie ie版本号
* @grammar baidu.browser.ie
* @meta standard
* @shortcut ie
* @see baidu.browser.firefox,baidu.browser.safari,baidu.browser.opera,baidu.browser.chrome,baidu.browser.maxthon
*/
baidu.browser = baidu.browser || {};
if (/msie (\d+\.\d)/i.test(navigator.userAgent)) {
//IE 8下以documentMode为准
//在百度模板中,可能会有$,防止冲突,将$1 写成 \x241
baidu.browser.ie = baidu.ie = document.documentMode || + RegExp['\x241'];
}
})();
/**
* @exports DrawingManager as BMapGLLib.DrawingManager
*/
var DrawingManager =
/**
* DrawingManager类的构造函数
* @class 鼠标绘制管理类实现鼠标绘制管理的<b>入口</b>
* 实例化该类后即可调用该类提供的open
* 方法开启绘制模式状态
* 也可加入工具栏进行选择操作
*
* @constructor
* @param {Map} map Baidu map的实例对象
* @param {Json Object} opts 可选的输入参数非必填项可输入选项包括<br />
* {"<b>isOpen</b>" : {Boolean} 是否开启绘制模式
* <br />"<b>enableDrawingTool</b>" : {Boolean} 是否添加绘制工具栏控件默认不添加
* <br />"<b>drawingToolOptions</b>" : {Json Object} 可选的输入参数非必填项可输入选项包括
* <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"<b>anchor</b>" : {ControlAnchor} 停靠位置默认左上角
* <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"<b>offset</b>" : {Size} 偏移值
* <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"<b>scale</b>" : {Number} 工具栏的缩放比例,默认为1
* <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"<b>drawingModes</b>" : {DrawingType<Array>} 工具栏上可以选择出现的绘制模式,将需要显示的DrawingType以数组型形式传入[BMAP_DRAWING_MARKER, BMAP_DRAWING_CIRCLE] 将只显示画点和画圆的选项
* <br />"<b>enableCalculate</b>" : {Boolean} 绘制是否进行测距(画线时候)测面(画圆多边形矩形)
* <br />"<b>markerOptions</b>" : {MarkerOptions} 所画的点的可选参数参考api中的<a href="http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E8%A6%86%E7%9B%96%E7%89%A9%E7%B1%BB">对应类</a>
* <br />"<b>circleOptions</b>" : {CircleOptions} 所画的圆的可选参数参考api中的<a href="http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E8%A6%86%E7%9B%96%E7%89%A9%E7%B1%BB">对应类</a>
* <br />"<b>polylineOptions</b>" : {PolylineOptions} 所画的线的可选参数参考api中的<a href="http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E8%A6%86%E7%9B%96%E7%89%A9%E7%B1%BB">对应类</a>
* <br />"<b>polygonOptions</b>" : {PolygonOptions} 所画的多边形的可选参数参考api中的<a href="http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E8%A6%86%E7%9B%96%E7%89%A9%E7%B1%BB">对应类</a>
* <br />"<b>rectangleOptions</b>" : {PolygonOptions} 所画的矩形的可选参数参考api中的<a href="http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E8%A6%86%E7%9B%96%E7%89%A9%E7%B1%BB">对应类</a>
*
* @example <b>参考示例</b><br />
* var map = new BMap.Map("container");<br />map.centerAndZoom(new BMap.Point(116.404, 39.915), 15);<br />
* var myDrawingManagerObject = new BMapGLLib.DrawingManager(map, {isOpen: true,
* drawingType: BMAP_DRAWING_MARKER, enableDrawingTool: true,
* enableCalculate: false,
* drawingToolOptions: {
* anchor: BMAP_ANCHOR_TOP_LEFT,
* offset: new BMap.Size(5, 5),
* drawingModes : [
* BMAP_DRAWING_MARKER,
* BMAP_DRAWING_CIRCLE,
* BMAP_DRAWING_POLYLINE,
* BMAP_DRAWING_POLYGON,
* BMAP_DRAWING_RECTANGLE
* ]
* },
* polylineOptions: {
* strokeColor: "#333"
* });
*/
BMapGLLib.DrawingManager = function (map, opts) {
if (!map) {
return;
}
instances.push(this);
opts = opts || {};
this.overlays = []; // 用来存储覆盖物
this._initialize(map, opts);
};
// 通过baidu.lang下的inherits方法让DrawingManager继承baidu.lang.Class
baidu.lang.inherits(DrawingManager, baidu.lang.Class, 'DrawingManager');
/**
* 开启地图的绘制模式
*
* @example <b>参考示例</b><br />
* myDrawingManagerObject.open();
*/
DrawingManager.prototype.open = function () {
// 判断绘制状态是否已经开启
if (this._isOpen == true) {
return true;
}
closeInstanceExcept(this);
this._open();
};
/**
* 关闭地图的绘制状态
*
* @example <b>参考示例</b><br />
* myDrawingManagerObject.close();
*/
DrawingManager.prototype.close = function () {
// 判断绘制状态是否已经开启
if (this._isOpen == false) {
return true;
}
var me = this;
this._close();
me._map.removeOverlay(tip_label);
setTimeout(function () {
me._map.enableDoubleClickZoom();
}, 2000);
};
/**
* 设置当前的绘制模式参数DrawingType为5个可选常量:
* <br/>BMAP_DRAWING_MARKER 画点
* <br/>BMAP_DRAWING_CIRCLE 画圆
* <br/>BMAP_DRAWING_POLYLINE 画线
* <br/>BMAP_DRAWING_POLYGON 画多边形
* <br/>BMAP_DRAWING_RECTANGLE 画矩形
* @param {DrawingType} DrawingType
* @return {Boolean}
*
* @example <b>参考示例</b><br />
* myDrawingManagerObject.setDrawingMode(BMAP_DRAWING_POLYLINE);
*/
DrawingManager.prototype.setDrawingMode = function (drawingType) {
// 与当前模式不一样时候才进行重新绑定事件
if (this._drawingType != drawingType) {
closeInstanceExcept(this);
this._setDrawingMode(drawingType);
}
};
/**
* 获取当前的绘制模式
* @return {DrawingType} 绘制的模式
*
* @example <b>参考示例</b><br />
* alert(myDrawingManagerObject.getDrawingMode());
*/
DrawingManager.prototype.getDrawingMode = function () {
return this._drawingType;
};
/**
* 打开距离或面积计算
*
* @example <b>参考示例</b><br />
* myDrawingManagerObject.enableCalculate();
*/
DrawingManager.prototype.enableCalculate = function () {
this._enableCalculate = true;
this._addGeoUtilsLibrary(); // 异步调用GeoUtils
};
/**
* 关闭距离或面积计算
*
* @example <b>参考示例</b><br />
* myDrawingManagerObject.disableCalculate();
*/
DrawingManager.prototype.disableCalculate = function () {
this._enableCalculate = false;
};
/**
* 打开吸附功能
*/
DrawingManager.prototype.enableSorption = function() {
this._enableSorption = true;
};
/**
* 关闭吸附功能
*/
DrawingManager.prototype.disableSorption = function() {
this._enableSorption = false;
};
/**
* 打开gpc功能
*/
DrawingManager.prototype.enableGpc = function() {
this._enableGpc = true;
this._addGPCLibrary(); // 异步调用gpc
};
/**
* 关闭gpc功能
*/
DrawingManager.prototype.disableGpc = function() {
this._enableGpc = false;
};
/**
* 获取所有绘制的覆盖物
*/
DrawingManager.prototype.getOverlays = function() {
return this.overlays;
};
DrawingManager.prototype.addOverlayData = function(overlay) {
return this.overlays.push(overlay);
};
DrawingManager.prototype.setOverlaysData = function(overlays) {
return this.overlays = overlays;
};
/**
* 清除指定覆盖物数据
*/
DrawingManager.prototype.clearOverlayData = function(overlay) {
var map = this._map;
for (var i = 0; i < this.overlays.length; i++) {
if (this.overlays[i] === overlay) {
this.overlays.splice(i, 1);
return overlay;
}
}
};
/**
* 清除指定覆盖物
*/
DrawingManager.prototype.clearOverlay = function(overlay) {
var map = this._map;
var overlay = this.clearOverlayData(overlay);
if (overlay) {
map.removeOverlay(overlay);
}
};
/**
* 清除所有绘制的覆盖物
*/
DrawingManager.prototype.clearOverlays = function() {
var map = this._map;
this.overlays.forEach(function (overlay) {
map.removeOverlay(overlay);
});
this.overlays.length = 0;
};
/**
* 鼠标绘制完成后派发总事件的接口
* @name DrawingManager#overlaycomplete
* @event
* @param {Event Object} e 回调函数会返回event参数包括以下返回值
* <br />{"<b>drawingMode</b> : {DrawingType}
* <br />"<b>overlay</b>{Marker||Polyline||Polygon||Circle}
* <br />"<b>calculate</b>{Number} 线
* <br />"<b>label</b>{Label} MapLabel
*
* @example <b>参考示例</b>
* myDrawingManagerObject.addEventListener("overlaycomplete", function(e) {
* alert(e.drawingMode);
* alert(e.overlay);
* alert(e.calculate);
* alert(e.label);
* });
*/
/**
* 绘制点完成后派发的事件接口
* @name DrawingManager#markercomplete
* @event
* @param {Marker} overlay 回调函数会返回相应的覆盖物
* <br />{"<b>overlay</b> : {Marker}
*
* @example <b>参考示例</b>
* myDrawingManagerObject.addEventListener("circlecomplete", function(e, overlay) {
* alert(overlay);
* });
*/
/**
* 绘制圆完成后派发的事件接口
* @name DrawingManager#circlecomplete
* @event
* @param {Circle} overlay 回调函数会返回相应的覆盖物
* <br />{"<b>overlay</b> : {Circle}
*/
/**
* 绘制线完成后派发的事件接口
* @name DrawingManager#polylinecomplete
* @event
* @param {Polyline} overlay 回调函数会返回相应的覆盖物
* <br />{"<b>overlay</b> : {Polyline}
*/
/**
* 绘制多边形完成后派发的事件接口
* @name DrawingManager#polygoncomplete
* @event
* @param {Polygon} overlay 回调函数会返回相应的覆盖物
* <br />{"<b>overlay</b> : {Polygon}
*/
/**
* 绘制矩形完成后派发的事件接口
* @name DrawingManager#rectanglecomplete
* @event
* @param {Polygon} overlay 回调函数会返回相应的覆盖物
* <br />{"<b>overlay</b> : {Polygon}
*/
/**
* 初始化状态
* @param {Map} 地图实例
* @param {Object} 参数
*/
DrawingManager.prototype._initialize = function (map, opts) {
/**
* map对象
* @private
* @type {Map}
*/
this._map = map;
/**
* 配置对象
* @private
* @type {Object}
*/
this._opts = opts;
/**
* 当前的绘制模式, 默认是绘制点
* @private
* @type {DrawingType}
*/
this._drawingType = opts.drawingMode || BMAP_DRAWING_MARKER;
/**
* 是否添加添加鼠标绘制工具栏面板
*/
if (opts.enableDrawingTool) {
this.enableDrawingTool();
}
if (opts.sorptionDistance !== undefined) {
this.setSorptionDistance(opts.sorptionDistance);
}
// 是否计算绘制出的面积
if (opts.enableCalculate === true) {
this.enableCalculate();
} else {
this.disableCalculate();
}
// 是否开启超限提示
if (opts.enableLimit === true) {
var limit = opts.limitOptions;
this.limit = limit;
}
// 是否开启吸附功能
if (opts.enableSorption === true) {
this.enableSorption();
} else {
this.disableSorption();
}
// 是否开启gpc功能
if (opts.enableGpc === true) {
this.enableGpc();
} else {
this.disableGpc();
}
/**
* 是否已经开启了绘制状态
* @private
* @type {Boolean}
*/
this._isOpen = !!(opts.isOpen === true);
if (this._isOpen) {
this._open();
}
this.setPolygonOptions(opts.polygonOptions);
this.setMarkerOptions(opts.markerOptions);
this.setCircleOptions(opts.circleOptions);
this.setPolylineOptions(opts.polylineOptions);
this.setRectangleOptions(opts.rectangleOptions);
this.setLabelOptions(opts.labelOptions);
this.controlButton = opts.controlButton == 'right' ? 'right' : 'left';
};
DrawingManager.prototype.enableDrawingTool = function() {
var opts = this._opts;
if (!this._drawingTool) {
var drawingTool = new DrawingTool(this, opts.drawingToolOptions);
this._drawingTool = drawingTool;
}
this._map.addControl(this._drawingTool);
};
DrawingManager.prototype.disableDrawingTool = function() {
if (this._drawingTool) {
this._map.removeControl(this._drawingTool);
}
};
DrawingManager.prototype.setSorptionDistance = function(distance) {
this._sorptionDistance = distance || 0;
};
DrawingManager.prototype.setPolygonOptions = function(options) {
this.polygonOptions = options || {};
};
DrawingManager.prototype.setMarkerOptions = function(options) {
this.markerOptions = options || {};
};
DrawingManager.prototype.setCircleOptions = function(options) {
this.circleOptions = options || {};
};
DrawingManager.prototype.setPolylineOptions = function(options) {
this.polylineOptions = options || {};
};
DrawingManager.prototype.setRectangleOptions = function(options) {
this.rectangleOptions = options || {};
};
DrawingManager.prototype.setLabelOptions = function(options) {
this.labelOptions = options || {};
};
/**
* 开启地图的绘制状态
* @return {Boolean}开启绘制状态成功返回true否则返回false
*/
DrawingManager.prototype._open = function () {
this._isOpen = true;
// 添加遮罩,所有鼠标操作都在这个遮罩上完成
if (!this._mask) {
this._mask = new Mask();
}
this._map.addOverlay(this._mask);
this._setDrawingMode(this._drawingType);
};
/**
* 设置当前的绘制模式
* @param {DrawingType}
*/
DrawingManager.prototype._setDrawingMode = function (drawingType) {
this._drawingType = drawingType;
/**
* 开启编辑状态时候才重新进行事件绑定
*/
if (this._isOpen) {
// 清空之前的自定义事件
this._mask.__listeners = {};
switch (drawingType) {
case BMAP_DRAWING_MARKER:
this._bindMarker();
break;
case BMAP_DRAWING_CIRCLE:
this._bindCircle();
break;
case BMAP_DRAWING_POLYLINE:
case BMAP_DRAWING_POLYGON:
this._bindPolylineOrPolygon();
break;
case BMAP_DRAWING_RECTANGLE:
this._bindRectangle();
break;
}
}
/**
* 如果添加了工具栏则也需要改变工具栏的样式
*/
if (this._drawingTool && this._isOpen) {
this._drawingTool.setStyleByDrawingMode(drawingType);
}
};
/**
* 关闭地图的绘制状态
* @return {Boolean}关闭绘制状态成功返回true否则返回false
*/
DrawingManager.prototype._close = function () {
this._isOpen = false;
if (this._mask) {
this._map.removeOverlay(this._mask);
}
/**
* 如果添加了工具栏则关闭时候将工具栏样式设置为拖拽地图
*/
if (this._drawingTool) {
this._drawingTool.setStyleByDrawingMode('hander');
}
};
/**
* 绑定鼠标画点的事件
*/
DrawingManager.prototype._bindMarker = function () {
var me = this,
map = this._map,
mask = this._mask;
/**
* 鼠标点击的事件
*/
var clickAction = function (e) {
// 往地图上添加marker
var marker = new BMapGL.Marker(e.point, me.markerOptions);
map.addOverlay(marker);
me._dispatchOverlayComplete(marker);
};
mask.addEventListener('click', clickAction);
};
/**
* 绑定鼠标画圆的事件
*/
var tip_label = null;
DrawingManager.prototype._bindCircle = function () {
var me = this,
map = this._map,
mask = this._mask,
circle = null,
overlays = [],
centerPoint = null; // 圆的中心点
var radius = 1;
var moveMarker = null;
var polyline = null;
var radiusWindow = null;
var operateWindow = null;
var lineStyel = {
strokeColor: '#4E6DF1', // 边线颜色。
strokeWeight: 2 // 边线的宽度,以像素为单位。
};
var centerIcon = new BMapGL.Icon('//mapopen.bj.bcebos.com/cms/images/DrawingManager/circenter.png', new BMapGL.Size(20, 20));
var moveIcon = new BMapGL.Icon('///mapopen.bj.bcebos.com/cms/images/DrawingManager/nbsearch2.png', new BMapGL.Size(40, 20), {
imageOffset: new BMapGL.Size(0, 10)
});
/**
* 开始绘制圆形
*/
var startAction = function (e) {
if (me.controlButton == 'right' && (e.button == 1 || e.button == 0)) {
return;
}
centerPoint = e.point;
var centerMarker = new BMapGL.Marker(centerPoint);
centerIcon.setImageSize(new BMapGL.Size(20, 20));
centerMarker.setIcon(centerIcon);
centerMarker.enableDragging();
centerMarker.addEventListener('dragstart', centerDragstart);
centerMarker.addEventListener('dragging', centerDragging);
centerMarker.addEventListener('dragend', centerDragend);
map.addOverlay(centerMarker);
overlays.push(centerMarker);
circle = new BMapGL.Circle(centerPoint, radius, me.circleOptions);
map.addOverlay(circle);
mask.enableEdgeMove();
mask.addEventListener('mousemove', moveAction);
baidu.on(document, 'mouseup', endAction);
};
/**
* 绘制圆形过程中鼠标移动过程的事件
*/
var moveAction = function (e) {
radius = me._map.getDistance(centerPoint, e.point).toFixed(0);
circle.setRadius(radius);
map.removeOverlay(tip_label);
tip_label = new BMapGL.Label('半径:' + radius + '米<br>松开完成绘制', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
/**
* 绘制圆形结束
*/
var endAction = function (e) {
var cz = map.getViewport(circle.getBounds());
cz.zoom -= 1;
map.setViewport(cz);
map.removeOverlay(tip_label);
var endPoint = new BMapGL.Point(circle.getBounds().getNorthEast().lng, centerPoint.lat);
mask.hide();
moveMarker = new BMapGL.Marker(endPoint);
moveMarker.setIcon(moveIcon);
moveMarker.enableDragging();
polyline = new BMapGL.Polyline([centerPoint, endPoint], lineStyel);
var midPoint = new BMapGL.Point((circle.getBounds().getNorthEast().lng + centerPoint.lng) / 2, centerPoint.lat);
radiusWindow = new Screenshot('circle', midPoint, radius, circle, me);
overlays = overlays.concat([moveMarker, polyline, radiusWindow]);
var limit = null;
if (me.limit) {
limit = me.limit.area;
}
var targetOverlay = {
limit: limit,
type: 'circle',
point: endPoint,
overlay: circle,
overlays: overlays
};
operateWindow = new Operate(targetOverlay, me);
map.addOverlay(moveMarker);
map.addOverlay(polyline);
map.addOverlay(radiusWindow);
map.addOverlay(operateWindow);
radiusWindow.addEventListener('radiuschange', function (e) {
var radius = e.radius;
circle.setRadius(radius);
var ePoint = getPointByDistance(centerPoint, radius, 'east');
var dragLeftPoint = new BMapGL.Point(ePoint.lng, centerPoint.lat);
var halflng = ePoint.lng > centerPoint.lng ? (circle.getBounds().getNorthEast().lng + centerPoint.lng) / 2 : (circle.getBounds().getSouthWest().lng + centerPoint.lng) / 2;
var halfLeftPoint = new BMapGL.Point(halflng, centerPoint.lat);
moveMarker.setPosition(dragLeftPoint);
radiusWindow.setInfo(halfLeftPoint, radius);
operateWindow.setPosition(dragLeftPoint, true);
operateWindow.updateWindow();
polyline.setPath([centerPoint, dragLeftPoint]);
});
moveMarker.addEventListener('dragging', function (e) {
var dragLeftPoint = new BMapGL.Point(e.latLng.lng, centerPoint.lat);
var halflng = e.latLng.lng > centerPoint.lng ? (circle.getBounds().getNorthEast().lng + centerPoint.lng) / 2 : (circle.getBounds().getSouthWest().lng + centerPoint.lng) / 2;
var isright = e.latLng.lng > centerPoint.lng ? true : false;
var halfLeftPoint = new BMapGL.Point(halflng, centerPoint.lat);
e.target.setPosition(dragLeftPoint);
radiusWindow.setInfo(halfLeftPoint, me._map.getDistance(centerPoint, e.latLng).toFixed(0));
operateWindow.setPosition(dragLeftPoint, isright);
polyline.setPath([centerPoint, dragLeftPoint]);
radius = me._map.getDistance(centerPoint, e.latLng).toFixed(0);
circle.setRadius(me._map.getDistance(centerPoint, e.latLng));
});
moveMarker.addEventListener('dragend', function (e) {
operateWindow.updateWindow();
});
mask.disableEdgeMove();
mask.removeEventListener('mousemove', moveAction);
mask.removeEventListener('mousemove', mousedownAction);
baidu.un(document, 'mouseup', endAction);
me.close();
};
/**
* 鼠标点击起始点
*/
var mousedownAction = function (e) {
baidu.preventDefault(e);
baidu.stopBubble(e);
if (me.controlButton == 'right' && e.button == 1) {
return;
}
if (centerPoint == null) {
startAction(e);
}
};
/**
* 非绘制圆形过程中鼠标移动过程的事件
*/
var mousemoveAction = function (e) {
baidu.preventDefault(e);
baidu.stopBubble(e);
map.removeOverlay(tip_label);
tip_label = new BMapGL.Label('按下确认中心点,拖拽确认半径', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
var centerDragstart = function (e) {
map.removeOverlay(moveMarker);
map.removeOverlay(polyline);
map.removeOverlay(radiusWindow);
map.removeOverlay(operateWindow);
};
var centerDragging = function (e) {
centerPoint = e.latLng;
circle.setCenter(e.latLng);
};
var centerDragend = function (e) {
centerPoint = e.latLng;
endAction(e);
};
mask.addEventListener('mousedown', mousedownAction);
mask.addEventListener('mousemove', mousemoveAction);
};
/**
* 画线和画多边形相似性比较大公用一个方法
*/
DrawingManager.prototype._bindPolylineOrPolygon = function () {
var me = this,
map = this._map,
mask = this._mask,
points = [], // 用户绘制的点
drawPoint = null, // 实际需要画在地图上的点
overlay = null,
match = null,
isBinded = false;
function getNorthEast() {
var bound = arguments[0];
var maxlng = 0;
var index = 0;
for (var j = 0; j < bound.length; j++) {
if (maxlng < bound[j].lng) {
maxlng = bound[j].lng;
index = j;
}
}
return bound[index];
}
/**
* 鼠标点击的事件
*/
var startAction = function (e) {
if (me.controlButton == 'right' && (e.button == 1 || e.button == 0)) {
return;
}
var point = e.point;
if (match) {
point = match;
}
points.push(point);
drawPoint = points.concat(points[points.length - 1]);
if (points.length == 1) {
if (me._drawingType == BMAP_DRAWING_POLYLINE) {
overlay = new BMapGL.Polyline(drawPoint, me.polylineOptions);
} else if (me._drawingType == BMAP_DRAWING_POLYGON) {
overlay = new BMapGL.Polygon(drawPoint, me.polygonOptions);
}
map.addOverlay(overlay);
} else {
overlay.setPath(drawPoint);
}
if (!isBinded) {
isBinded = true;
mask.enableEdgeMove();
mask.removeEventListener('mousemove', mousemoveAction);
mask.addEventListener('mousemove', moveAction);
mask.addEventListener('dblclick', dblclickAction);
}
};
/**
* 鼠标移动过程的事件
*/
var moveAction = function (e) {
var point = e.point;
if (me._enableSorption) {
var matchs = me.getSorptionMatch(point, me.overlays, me._sorptionDistance);
if (matchs && matchs.length > 0) {
match = matchs[0].point;
overlay.setPositionAt(drawPoint.length - 1, matchs[0].point);
return;
}
}
match = null;
overlay.setPositionAt(drawPoint.length - 1, e.point);
map.removeOverlay(tip_label);
tip_label = new BMapGL.Label('单击绘制下一个点,双击完成绘制', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
/**
* 鼠标双击的事件
*/
var dblclickAction = function (e) {
baidu.stopBubble(e);
isBinded = false;
map.removeOverlay(tip_label);
mask.disableEdgeMove();
mask.removeEventListener('mousedown',startAction);
mask.removeEventListener('mousemove', moveAction);
mask.removeEventListener('mousemove', mousemoveAction);
mask.removeEventListener('dblclick', dblclickAction);
if (me.controlButton == 'right') {
points.push(e.point);
} else if (baidu.ie <= 8) {
} else {
points.pop();
}
// 裁剪
try {
if (me._enableGpc && window.gpcas && 'polygon' === me._drawingType) {
var res = new gpcas.geometry.PolyDefault();
for (var i = 0; i < points.length; i++) {
res.addPoint(new gpcas.Point(points[i].lng, points[i].lat));
}
for (var j = 0; j < me.overlays.length; j++) {
var path = me.overlays[j].getPath();
var target = new gpcas.geometry.PolyDefault();
for (var i = 0; i < path.length; i++) {
target.addPoint(new gpcas.Point(path[i].lng, path[i].lat));
}
var diff = res.difference(target);
var newPoints = diff.getPoints();
var outPoints = [];
for (var i = 0; i < newPoints.length; i++) {
outPoints.push(new BMapGL.Point(newPoints[i].x, newPoints[i].y));
}
res = new gpcas.geometry.PolyDefault();
for (var i = 0; i < newPoints.length; i++) {
res.addPoint(new gpcas.Point(newPoints[i].x, newPoints[i].y));
}
points = outPoints;
}
}
} catch(e) {
}
overlay.setPath(points);
var cz = map.getViewport(points);
cz.zoom -= 1;
map.setViewport(cz);
overlay.enableEditing();
var limit = null;
if (me.limit) {
limit = 'polygon' === me._drawingType ? me.limit.area : me.limit.distance;
}
var targetOverlay = {
limit: limit,
type: me._drawingType,
point: getNorthEast(points),
overlay: overlay,
overlays: []
};
var operateWindow = new Operate(targetOverlay, me);
map.addOverlay(operateWindow);
overlay.addEventListener('lineupdate', function (e) {
var point = getNorthEast(e.currentTarget.getPath());
operateWindow.setPosition(point, true);
operateWindow.updateWindow();
});
points.length = 0;
drawPoint.length = 0;
me.close();
};
/**
* 非绘制多边形过程中鼠标移动过程的事件
*/
var mousemoveAction = function (e) {
baidu.preventDefault(e);
baidu.stopBubble(e);
map.removeOverlay(tip_label);
tip_label = new BMapGL.Label('单击确认起点', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
mask.addEventListener('mousemove', mousemoveAction);
// mask.addEventListener('mouseup', startAction);
mask.addEventListener('mousedown', startAction);
// 双击时候不放大地图级别
mask.addEventListener('dblclick', function (e) {
baidu.stopBubble(e);
});
};
/**
* 绑定鼠标画矩形的事件
*/
DrawingManager.prototype._bindRectangle = function () {
var me = this,
map = this._map,
mask = this._mask,
polygon = null,
startPoint = null;
// 获取4个顶点和4条边中点的坐标
function getRectAllPoints(pointA, pointB) {
var pointLT = new BMapGL.Point(pointA.lng, pointA.lat); // 左上角
var pointRT = new BMapGL.Point(pointB.lng, pointA.lat); // 右上角
var pointRB = new BMapGL.Point(pointB.lng, pointB.lat); // 右下角
var pointLB = new BMapGL.Point(pointA.lng, pointB.lat); // 左上角
var pointTC = new BMapGL.Point((pointA.lng + pointB.lng) / 2, pointA.lat);
var pointRC = new BMapGL.Point(pointB.lng, (pointA.lat + pointB.lat) / 2);
var pointBC = new BMapGL.Point((pointA.lng + pointB.lng) / 2, pointB.lat);
var pointLC = new BMapGL.Point(pointA.lng, (pointA.lat + pointB.lat) / 2);
return [pointLT, pointTC, pointRT, pointRC, pointRB, pointBC, pointLB, pointLC];
}
var moveIcon = new BMapGL.Icon('//mapopen.bj.bcebos.com/cms/images/DrawingManager/bullet2.png', new BMapGL.Size(10, 10));
moveIcon.setImageSize(new BMapGL.Size(10, 10));
/**
* 开始绘制矩形
*/
var startAction = function (e) {
baidu.stopBubble(e);
baidu.preventDefault(e);
if (me.controlButton == 'right' && (e.button == 1 || e.button == 0)) {
return;
}
startPoint = e.point;
var endPoint = startPoint;
polygon = new BMapGL.Polygon(me._getRectanglePoint(startPoint, endPoint), me.rectangleOptions);
map.addOverlay(polygon);
mask.enableEdgeMove();
mask.addEventListener('mousemove', moveAction);
baidu.on(document, 'mouseup', endAction);
};
/**
* 绘制矩形过程中鼠标移动过程的事件
*/
var moveAction = function (e) {
map.removeOverlay(tip_label);
polygon.setPath(me._getRectanglePoint(startPoint, e.point));
var points = getRectAllPoints(startPoint, e.point);
var width = me._map.getDistance(startPoint, points[2]).toFixed(0);
var height = me._map.getDistance(startPoint, points[6]).toFixed(0);
tip_label = new BMapGL.Label('尺寸:' + width + '米 x ' + height + '米<br>松开结束绘制', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
/**
* 绘制矩形结束
*/
var endAction = function (e) {
mask.hide();
var endPoint = null;
var markers = [];
var points = getRectAllPoints(startPoint, e.point);
var pointsTmp = [];
var cz = map.getViewport(points);
cz.zoom -= 1;
map.setViewport(cz);
map.removeOverlay(tip_label);
var width = me._map.getDistance(startPoint, points[2]).toFixed(0);
var height = me._map.getDistance(startPoint, points[6]).toFixed(0);
var rectInfo = new Screenshot('rectangle', points[0], {
width: width,
height: height
}, polygon, me);
for (var i = 0; i < points.length; i++) {
var marker = new BMapGL.Marker(points[i]);
marker.setIcon(moveIcon);
marker.enableDragging();
markers.push(marker);
map.addOverlay(marker);
pointsTmp[i] = me.mc2ll(marker.point);
marker.addEventListener('mousedown', function (e) {
endPoint = me.mc2ll(e.target.point);
});
marker.addEventListener('dragging', function (e) {
var point = e.latLng;
for (var j = 0; j < pointsTmp.length; j++) {
if (endPoint.lng == pointsTmp[j].lng) {
points[j].lng = point.lng;
}
if (endPoint.lat == pointsTmp[j].lat) {
points[j].lat = point.lat;
}
}
points = getRectAllPoints(points[0], points[4]);
for (var j = 0; j < markers.length; j++) {
markers[j].setPosition(points[j]);
}
width = me._map.getDistance(points[0], points[2]).toFixed(0);
height = me._map.getDistance(points[0], points[6]).toFixed(0);
rectInfo.setInfo(points[0], {
width: width,
height: height
});
operateWindow.setPosition(points[3], true);
polygon.setPath(points);
});
marker.addEventListener('dragend', function (e) {
for (var i = 0; i < markers.length; i++) {
var marker = markers[i];
pointsTmp[i] = me.mc2ll(marker.point);
}
operateWindow.updateWindow();
});
}
rectInfo.addEventListener('rectwhchange', function (e) {
var width = e.width;
var height = e.height;
var pointx = getPointByDistance(points[0], width, 'east');
var pointy = getPointByDistance(points[0], height, 'south');
points[4].lng = pointx.lng;
points[4].lat = pointy.lat;
points = getRectAllPoints(points[0], points[4]);
for (var j = 0; j < markers.length; j++) {
markers[j].setPosition(points[j]);
}
rectInfo.setInfo(points[0], {
width: width,
height: height
});
operateWindow.setPosition(points[3], true);
polygon.setPath(points);
for (var i = 0; i < markers.length; i++) {
var marker = markers[i];
pointsTmp[i] = me.mc2ll(marker.point);
}
operateWindow.updateWindow();
});
var overlays = [markers, rectInfo];
var limit = null;
if (me.limit) {
limit = me.limit.area;
}
var overlay = {
limit: limit,
type: 'rectangle',
point: points[3],
overlay: polygon,
overlays: overlays
};
var operateWindow = new Operate(overlay, me);
map.addOverlay(operateWindow);
map.addOverlay(rectInfo);
mask.disableEdgeMove();
mask.removeEventListener('mousemove', moveAction);
mask.removeEventListener('mousemove', mousemoveAction);
baidu.un(document, 'mouseup', endAction);
me.close();
};
/**
* 非绘制矩形过程中鼠标移动过程的事件
*/
var mousemoveAction = function (e) {
baidu.preventDefault(e);
baidu.stopBubble(e);
map.removeOverlay(tip_label);
tip_label = new BMapGL.Label('按住确认起点,拖拽进行绘制', {
position: e.point, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(10, 10) // 设置文本偏移量
});
tip_label.setStyle(me.labelOptions);
map.addOverlay(tip_label);
};
mask.addEventListener('mousedown', startAction);
mask.addEventListener('mousemove', mousemoveAction);
};
/**
* 添加显示所绘制图形的面积或者长度
* @param {overlay} 覆盖物
* @param {point} 显示的位置
*/
DrawingManager.prototype._calculate = function (overlay, point) {
var result = {
data: 0, // 计算出来的长度或面积
label: null // 显示长度或面积的label对象
};
if (this._enableCalculate && BMapGLLib.GeoUtils) {
var type = overlay.toString();
// 不同覆盖物调用不同的计算方法
switch (type) {
case 'Polyline': //[object Polyline]==>在3D版本中已经转为了Polyline
result.data = BMapGLLib.GeoUtils.getPolylineDistance(overlay);
break;
case 'Polygon':
result.data = BMapGLLib.GeoUtils.getPolygonArea(overlay);
break;
case 'Circle':
var radius = overlay.getRadius();
result.data = Math.PI * radius * radius;
break;
}
// 异常情况处理
if (!result.data || result.data < 0) {
result.data = 0;
console.error('计算函数异常处理');
} else {
// 保留2位小数位
result.data = result.data.toFixed(2);
}
/**
* 这里我们只需要开启计算面积功能但并不需要在地图上添加显示面积的label所以注释掉
*/
// result.label = this._addLabel(point, result.data);
}
return result;
};
/**
* 开启测距和测面功能需要依赖于GeoUtils库
* 所以这里判断用户是否已经加载,若未加载则用js动态加载
*/
DrawingManager.prototype._addGeoUtilsLibrary = function () {
if (!BMapGLLib.GeoUtils) {
var script = document.createElement('script');
script.setAttribute('type', 'text/javascript');
script.setAttribute('src', '//mapopen.cdn.bcebos.com/github/BMapGLLib/GeoUtils/src/GeoUtils.min.js');
// script.setAttribute('src', '../../GeoUtils/GeoUtils.js');
document.body.appendChild(script);
}
};
/**
* 开启裁剪功能需要依赖于gpc库
* 所以这里判断用户是否已经加载,若未加载则用js动态加载
*/
DrawingManager.prototype._addGPCLibrary = function () {
if (!window.gpcas) {
var script = document.createElement('script');
script.setAttribute('type', 'text/javascript');
script.setAttribute('src', '//mapopen.cdn.bcebos.com/github/BMapGLLib/DrawingManager/src/gpc.js');
// script.setAttribute('src', '../src/gpc.js');
document.body.appendChild(script);
}
};
/**
* 向地图中添加文本标注
* @param {Point}
* @param {String} 所以显示的内容
*/
DrawingManager.prototype._addLabel = function (point, content) {
var label = new BMapGL.Label(content, {
position: point
});
this._map.addOverlay(label);
return label;
};
/**
* 根据起终点获取矩形的四个顶点
* @param {Point} 起点
* @param {Point} 终点
*/
DrawingManager.prototype._getRectanglePoint = function (startPoint, endPoint) {
return [
new BMapGL.Point(startPoint.lng, startPoint.lat),
new BMapGL.Point(endPoint.lng, startPoint.lat),
new BMapGL.Point(endPoint.lng, endPoint.lat),
new BMapGL.Point(startPoint.lng, endPoint.lat)
];
};
/**
* 派发成功事件
*/
DrawingManager.prototype._dispatchOverlayComplete = function (overlay, calculate) {
var options = {
overlay: overlay,
drawingMode: this._drawingType
};
if (calculate) {
options.calculate = calculate.data || null;
options.label = calculate.label || null;
}
this.dispatchEvent(this._drawingType + 'complete', overlay);
this.dispatchEvent('overlaycomplete', options);
};
/**
* 派发失败事件
*/
DrawingManager.prototype._dispatchOverlayCancel = function (overlay) {
var options = {
overlay: overlay,
drawingMode: this._drawingType
};
this.dispatchEvent(this._drawingType + 'cancel', overlay);
this.dispatchEvent('overlaycancel', options);
};
// 判断吸附算法
DrawingManager.prototype.getSorptionMatch = function (point, polygons, distance) {
distance = distance || 20;
var map = this._map;
var P = map.pointToPixel(point); // point.pixel;
var match = [];
for (var j = 0; j < polygons.length; j++) {
var pixels = polygons[j].getPath();
var first = pixels[0];
var last = pixels[pixels.length - 1];
if (!first.equals(last)) {
pixels.push(pixels[0]);
}
for (var i = 1; i < pixels.length; i++) {
var A = map.pointToPixel(pixels[i - 1]);
var B = map.pointToPixel(pixels[i]);
var vAP = [P.x - A.x, P.y - A.y];
var vAB = [B.x - A.x, B.y - A.y];
var vPB = [B.x - P.x, B.y - P.y];
var cAPAB = vAP[0] * vAB[0] + vAP[1] * vAB[1];
var lAPAB = Math.sqrt(Math.pow(vAP[0], 2) + Math.pow(vAP[1], 2)) * Math.sqrt(Math.pow(vAB[0], 2) + Math.pow(vAB[1], 2));
var rPAB = Math.acos(cAPAB / lAPAB);
var cABPB = vAB[0] * vPB[0] + vAB[1] * vPB[1];
var lABPB = Math.sqrt(Math.pow(vAB[0], 2) + Math.pow(vAB[1], 2)) * Math.sqrt(Math.pow(vPB[0], 2) + Math.pow(vPB[1], 2));
var rPBA = Math.acos(cABPB / lABPB);
if (rPAB < Math.PI / 2 && rPBA < Math.PI / 2) {
var lAP = Math.sqrt(Math.pow(vAP[0], 2) + Math.pow(vAP[1], 2));
var lAB = Math.sqrt(Math.pow(vAB[0], 2) + Math.pow(vAB[1], 2));
var lAO = Math.cos(rPAB) * lAP;
var pAOAB = lAO / lAB;
var lPO = Math.sin(rPAB) * lAP;
var O = [A.x + vAB[0] * pAOAB, A.y + vAB[1] * pAOAB];
if (lPO < distance) {
match.push({
point: map.pixelToPoint({
x: O[0],
y: O[1]
}),
length: lPO
});
}
}
}
}
match.sort(function (a, b) {
return a.length - b.length;
});
var ret = match.length > 0 ? match : null;
return ret;
}
// 墨卡托坐标转经纬度
DrawingManager.prototype.mc2ll = function (point) {
var map = this._map;
var ll = map.mercatorToLnglat(point.lng, point.lat);
return new BMapGL.Point(ll[0], ll[1]);
};
// 经纬度坐标转墨卡托
DrawingManager.prototype.ll2mc = function (point) {
var map = this._map;
var mc = map.lnglatToMercator(point.lng, point.lat);
return new BMapGL.Point(mc[0], mc[1]);
};
// 确认,取消操作覆盖物
function Operate(data, DrawingManager) {
this.limit = data.limit;
this.type = data.type;
this.point = data.point;
this.overlay = data.overlay;
this.overlays = data.overlays;
this.DrawingManager = DrawingManager;
}
Operate.prototype = new BMapGL.Overlay();
Operate.prototype.dispatchEvent = baidu.lang.Class.prototype.dispatchEvent;
Operate.prototype.addEventListener = baidu.lang.Class.prototype.addEventListener;
Operate.prototype.removeEventListener = baidu.lang.Class.prototype.removeEventListener;
Operate.prototype.initialize = function (map) {
var me = this;
this._map = map;
var overlyTypeText = (this.type === 'polyline' ? '长度' : '面积');
var unit = (this.type === 'polyline' ? '万米' : '万平方米');
var div = this.div = document.createElement('div');
div.className = 'operateWindow';
var html = '<div><span id="confirmOperate"></span><span id="cancelOperate"></span><span id="warnOperate">' + overlyTypeText + '不超过' + this.limit / 10000 + unit + '</span></div>';
div.innerHTML = html;
this._map.getPanes().markerPane.appendChild(div);
this.updateWindow();
this._bind();
return div;
};
Operate.prototype._bind = function () {
var that = this;
var map = this._map;
var overlay = this.overlay;
var overlays = this.overlays;
document.getElementById('confirmOperate').addEventListener('click', function (e) {
map.removeOverlay(that);
if (that.type == 'rectangle') {
var calculate = that.DrawingManager._calculate(overlay, overlay.getPath());
}
else if (that.type == 'circle') {
var calculate = that.DrawingManager._calculate(overlay, that.point);
}
else if (that.type == 'polygon') {
var calculate = that.DrawingManager._calculate(overlay, (overlay.getPath()));
that.DrawingManager.overlays.push(overlay);
overlay.disableEditing();
}
else if (that.type == 'polyline') {
var calculate = that.DrawingManager._calculate(overlay, (overlay.getPath()));
that.DrawingManager.overlays.push(overlay);
overlay.disableEditing();
}
that.DrawingManager._dispatchOverlayComplete(overlay, calculate);
for (var i = 0; i < overlays.length; i++) {
if (Array.isArray(overlays[i])) {
for (var k in overlays[i]) {
map.removeOverlay(overlays[i][k]);
}
} else {
map.removeOverlay(overlays[i]);
}
}
that.DrawingManager.close();
});
document.getElementById('cancelOperate').addEventListener('click', function (e) {
map.removeOverlay(that);
for (var i = 0; i < overlays.length; i++) {
if (Array.isArray(overlays[i])) {
for (var k in overlays[i]) {
map.removeOverlay(overlays[i][k]);
}
} else {
map.removeOverlay(overlays[i]);
}
}
map.removeOverlay(overlay);
that.DrawingManager._dispatchOverlayCancel(overlay);
that.DrawingManager._mask.show();
that.DrawingManager._setDrawingMode(that.type);
});
};
Operate.prototype.updateWindow = function () {
if (this.domElement === null) {
return;
}
var overlay = this.overlay;
var limit = this.limit;
var calculate;
if (this.type == 'rectangle') {
calculate = this.DrawingManager._calculate(overlay, overlay.getPath());
}
else if (this.type == 'circle') {
calculate = this.DrawingManager._calculate(overlay, this.point);
}
else if (this.type == 'polygon') {
calculate = this.DrawingManager._calculate(overlay, overlay.getPath());
}
else if (this.type == 'polyline') {
calculate = this.DrawingManager._calculate(overlay, overlay.getPath());
}
if (Object.prototype.toString.call(limit) === '[object Number]' && calculate.data > limit) {
document.getElementById('confirmOperate').style.display = 'none';
document.getElementById('warnOperate').style.display = 'block';
}
else {
document.getElementById('confirmOperate').style.display = 'block';
document.getElementById('warnOperate').style.display = 'none';
}
};
Operate.prototype.setPosition = function (point, isright) {
this.point = point;
var map = this._map,
pixel = map.pointToOverlayPixel(this.point);
if (isright) {
this.div.classList.remove('operateLeft');
this.div.style.left = pixel.x + 15 + 'px';
}
else {
this.div.classList.add('operateLeft');
this.div.style.left = pixel.x - 105 + 'px';
}
this.div.style.top = pixel.y - 16 + 'px';
};
Operate.prototype.draw = function () {
var map = this._map,
pixel = map.pointToOverlayPixel(this.point);
this.div.style.left = pixel.x + 15 + 'px';
this.div.style.top = pixel.y - 16 + 'px';
};
// 显示,编辑半径覆盖物
function Screenshot(type, point, number, overlay, DrawingManager) {
this.type = type;
this.point = point;
this.number = number;
this.overlay = overlay;
this.DrawingManager = DrawingManager;
}
Screenshot.prototype = new BMapGL.Overlay();
Screenshot.prototype.dispatchEvent = baidu.lang.Class.prototype.dispatchEvent;
Screenshot.prototype.addEventListener = baidu.lang.Class.prototype.addEventListener;
Screenshot.prototype.removeEventListener = baidu.lang.Class.prototype.removeEventListener;
Screenshot.prototype.initialize = function (map) {
var me = this;
this._map = map;
var div = this.div = document.createElement('div');
div.className = 'screenshot';
if (this.type == 'circle') {
var html = '<div class="circlShot"><span id="screenshotNum">' + this.number + '</span><input id="circleInput" type="text" /><span class="unit">米</span></div>';
}
else if (this.type == 'rectangle') {
var html = '<div class="rectWH"><div class="wh"><span id="rectWidth">' + this.number.width + '</span><input id="rectWidthInput" type="text" /></div><span class="multiple">x</span><div class="wh"><span id="rectHeight">' + this.number.height + '</span><input id="rectHeightInput" type="text" /></div><span class="unit">米</span></div>';
}
div.innerHTML = html;
this._map.getPanes().markerPane.appendChild(div);
this._bind();
return div;
};
Screenshot.prototype._bind = function () {
this.setNumber(this.number);
if (this.type == 'circle') {
this.bindCircleEvent();
} else {
this.bindRectEvent();
}
};
Screenshot.prototype.bindCircleEvent = function () {
var that = this;
var circleSpn = document.getElementById('screenshotNum');
var circleInput = document.getElementById('circleInput');
circleSpn.addEventListener('click', function (e) {
var val = circleSpn.innerText;
circleSpn.style.display = 'none';
circleInput.value = val;
circleInput.style.display = 'inline-block';
circleInput.focus();
});
circleInput.addEventListener('click', function (e) {
circleInput.focus();
});
circleInput.addEventListener('keydown', function (e) {
if (e.keyCode === 13) {
var val = circleInput.value;
circleInput.style.display = 'none';
circleSpn.style.display = 'inline-block';
circleSpn.innerText = val;
var opt = {
radius: val,
overlay: that.overlay
};
that._dispatchRadiusChange(opt);
}
});
circleInput.addEventListener('blur', function (e) {
var val = circleInput.value;
circleInput.style.display = 'none';
circleSpn.style.display = 'inline-block';
circleSpn.innerText = val;
var opt = {
radius: val,
overlay: that.overlay
};
that._dispatchRadiusChange(opt);
});
};
Screenshot.prototype.bindRectEvent = function () {
var that = this;
var rectWidthSpn = document.getElementById('rectWidth');
var rectWidthInput = document.getElementById('rectWidthInput');
var rectHeightSpn = document.getElementById('rectHeight');
var rectHeightInput = document.getElementById('rectHeightInput');
rectWidthInput.value = rectWidthSpn.innerText;
rectHeightInput.value = rectHeightSpn.innerText;
rectWidthSpn.addEventListener('click', function (e) {
var val = rectWidthSpn.innerText;
rectWidthSpn.style.display = 'none';
rectWidthInput.value = val;
rectWidthInput.style.display = 'inline-block';
rectWidthInput.focus();
});
rectHeightSpn.addEventListener('click', function (e) {
var val = rectHeightSpn.innerText;
rectHeightSpn.style.display = 'none';
rectHeightInput.value = val;
rectHeightInput.style.display = 'inline-block';
rectHeightInput.focus();
});
rectWidthInput.addEventListener('click', function (e) {
rectWidthInput.focus();
});
rectHeightInput.addEventListener('click', function (e) {
rectHeightInput.focus();
});
rectWidthInput.addEventListener('keydown', function (e) {
if (e.keyCode === 13) {
var widthVal = rectWidthInput.value;
var heightVal = rectHeightInput.value;
rectWidthInput.style.display = 'none';
rectHeightInput.style.display = 'none';
rectWidthSpn.style.display = 'inline-block';
rectHeightSpn.style.display = 'inline-block';
rectWidthSpn.innerText = widthVal;
rectHeightSpn.innerText = heightVal;
var opt = {
width: widthVal,
height: heightVal,
overlay: that.overlay
};
that._dispatchRectWHChange(opt);
}
});
rectHeightInput.addEventListener('keydown', function (e) {
if (e.keyCode === 13) {
var widthVal = rectWidthInput.value;
var heightVal = rectHeightInput.value;
rectWidthInput.style.display = 'none';
rectHeightInput.style.display = 'none';
rectWidthSpn.style.display = 'inline-block';
rectHeightSpn.style.display = 'inline-block';
rectWidthSpn.innerText = widthVal;
rectHeightSpn.innerText = heightVal;
var opt = {
width: widthVal,
height: heightVal,
overlay: that.overlay
};
that._dispatchRectWHChange(opt);
}
});
};
Screenshot.prototype.setInfo = function (point, number) {
this.setNumber(number);
this.setPosition(point);
};
Screenshot.prototype.setNumber = function (number) {
if (this.type == 'circle') {
document.getElementById('screenshotNum').textContent = number;
}
else {
document.getElementById('rectWidth').textContent = number.width;
document.getElementById('rectHeight').textContent = number.height;
}
};
Screenshot.prototype.setPosition = function (point) {
this.point = point;
var map = this._map,
type = this.type,
pixel = map.pointToOverlayPixel(this.point);
if (type == 'circle') {
this.div.style.left = pixel.x - 30 + 'px';
this.div.style.top = pixel.y - 40 + 'px';
}
else if (type == 'rectangle') {
this.div.style.left = pixel.x + 'px';
this.div.style.top = pixel.y - 45 + 'px';
}
};
Screenshot.prototype.draw = function () {
var map = this._map,
type = this.type,
pixel = map.pointToOverlayPixel(this.point);
if (type == 'circle') {
this.div.style.left = pixel.x - 30 + 'px';
this.div.style.top = pixel.y - 40 + 'px';
}
else if (type == 'rectangle') {
this.div.style.left = pixel.x + 'px';
this.div.style.top = pixel.y - 45 + 'px';
}
};
/**
* 派发事件
*/
Screenshot.prototype._dispatchRadiusChange = function (opt) {
this.dispatchEvent('radiuschange', opt);
};
/**
* 派发事件
*/
Screenshot.prototype._dispatchRectWHChange = function (opt) {
this.dispatchEvent('rectwhchange', opt);
};
/**
* 创建遮罩对象
*/
function Mask() {
/**
* 鼠标到地图边缘的时候是否自动平移地图
*/
this._enableEdgeMove = false;
}
Mask.prototype = new BMapGL.Overlay();
/**
* 这里不使用api中的自定义事件是为了更灵活使用
*/
Mask.prototype.dispatchEvent = baidu.lang.Class.prototype.dispatchEvent;
Mask.prototype.addEventListener = baidu.lang.Class.prototype.addEventListener;
Mask.prototype.removeEventListener = baidu.lang.Class.prototype.removeEventListener;
Mask.prototype.initialize = function (map) {
var me = this;
this._map = map;
var div = this.container = document.createElement('div');
var size = this._map.getSize();
div.style.cssText = 'position:absolute;background:transparent;cursor:crosshair;width:' + size.width + 'px;height:' + size.height + 'px';
this._map.addEventListener('resize', function (e) {
me._adjustSize(e.size);
});
this._map.getPanes().floatPane.appendChild(div);
this._bind();
return div;
};
Mask.prototype.draw = function () {
var map = this._map,
point = map.pixelToPoint(new BMapGL.Pixel(0, 0)),
pixel = map.pointToOverlayPixel(point);
this.container.style.left = pixel.x + 'px';
this.container.style.top = pixel.y + 'px';
};
/**
* 开启鼠标到地图边缘自动平移地图
*/
Mask.prototype.enableEdgeMove = function () {
this._enableEdgeMove = true;
};
/**
* 关闭鼠标到地图边缘自动平移地图
*/
Mask.prototype.disableEdgeMove = function () {
clearInterval(this._edgeMoveTimer);
this._enableEdgeMove = false;
};
/**
* 绑定事件,派发自定义事件
*/
Mask.prototype._bind = function () {
var me = this,
map = this._map,
container = this.container,
lastMousedownXY = null,
lastClickXY = null;
/**
* 根据event对象获取鼠标的xy坐标对象
* @param {Event}
* @return {Object} {x:e.x, y:e.y}
*/
var getXYbyEvent = function (e) {
return {
x: e.clientX,
y: e.clientY
};
};
var domEvent = function (e) {
var type = e.type;
e = baidu.getEvent(e);
point = me.getDrawPoint(e); // 当前鼠标所在点的地理坐标
var dispatchEvent = function (type) {
e.point = point;
me.dispatchEvent(e);
};
if (type == 'mousedown') {
lastMousedownXY = getXYbyEvent(e);
}
var nowXY = getXYbyEvent(e);
// click经过一些特殊处理派发其他同事件按正常的dom事件派发
if (type == 'click') {
// 鼠标点击过程不进行移动才派发click和dblclick
if (Math.abs(nowXY.x - lastMousedownXY.x) < 5 && Math.abs(nowXY.y - lastMousedownXY.y) < 5) {
if (!lastClickXY || !(Math.abs(nowXY.x - lastClickXY.x) < 5 && Math.abs(nowXY.y - lastClickXY.y) < 5)) {
dispatchEvent('click');
lastClickXY = getXYbyEvent(e);
} else {
lastClickXY = null;
}
}
} else {
dispatchEvent(type);
}
};
/**
* 将事件都遮罩层的事件都绑定到domEvent来处理
*/
var events = ['click', 'mousedown', 'mousemove', 'mouseup', 'dblclick'],
index = events.length;
while (index--) {
baidu.on(container, events[index], domEvent);
}
// 鼠标移动过程中,到地图边缘后自动平移地图
baidu.on(container, 'mousemove', function (e) {
if (me._enableEdgeMove) {
me.mousemoveAction(e);
}
});
};
// 鼠标移动过程中,到地图边缘后自动平移地图
Mask.prototype.mousemoveAction = function (e) {
function getClientPosition(e) {
var clientX = e.clientX,
clientY = e.clientY;
if (e.changedTouches) {
clientX = e.changedTouches[0].clientX;
clientY = e.changedTouches[0].clientY;
}
return new BMapGL.Pixel(clientX, clientY);
}
var map = this._map,
me = this,
pixel = map.pointToPixel(this.getDrawPoint(e)),
clientPos = getClientPosition(e),
offsetX = clientPos.x - pixel.x,
offsetY = clientPos.y - pixel.y;
pixel = new BMapGL.Pixel((clientPos.x - offsetX), (clientPos.y - offsetY));
this._draggingMovePixel = pixel;
var point = map.pixelToPoint(pixel),
eventObj = {
pixel: pixel,
point: point
};
// 拖拽到地图边缘移动地图
this._panByX = this._panByY = 0;
if (pixel.x <= 20 || pixel.x >= map.width - 20 ||
pixel.y <= 50 || pixel.y >= map.height - 10) {
if (pixel.x <= 20) {
this._panByX = 8;
}
else if (pixel.x >= map.width - 20) {
this._panByX = -8;
}
if (pixel.y <= 50) {
this._panByY = 8;
}
else if (pixel.y >= map.height - 10) {
this._panByY = -8;
}
if (!this._edgeMoveTimer) {
this._edgeMoveTimer = setInterval(function () {
map.panBy(me._panByX, me._panByY, {
noAnimation: true
});
}, 30);
}
} else {
if (this._edgeMoveTimer) {
clearInterval(this._edgeMoveTimer);
this._edgeMoveTimer = null;
}
}
};
/*
* 调整大小
* @param {Size}
*/
Mask.prototype._adjustSize = function (size) {
this.container.style.width = size.width + 'px';
this.container.style.height = size.height + 'px';
};
/**
* 获取当前绘制点的地理坐标
*
* @param {Event} e e对象
* @return Point对象的位置信息
*/
Mask.prototype.getDrawPoint = function (e) {
var map = this._map,
trigger = baidu.getTarget(e),
x = e.offsetX || e.layerX || 0,
y = e.offsetY || e.layerY || 0;
if (trigger.nodeType != 1) {
trigger = trigger.parentNode;
}
while (trigger && trigger != map.getContainer()) {
if (!(trigger.clientWidth == 0 &&
trigger.clientHeight == 0 &&
trigger.offsetParent && trigger.offsetParent.nodeName == 'TD')) {
x += trigger.offsetLeft || 0;
y += trigger.offsetTop || 0;
}
trigger = trigger.offsetParent;
}
var pixel = new BMapGL.Pixel(x, y);
var point = map.pixelToPoint(pixel);
return point;
};
/**
* 绘制工具面板自定义控件
*/
function DrawingTool(drawingManager, drawingToolOptions) {
this.drawingManager = drawingManager;
drawingToolOptions = this.drawingToolOptions = drawingToolOptions || {};
this._opts = {};
// 默认停靠位置和偏移量
this.defaultAnchor = BMAP_ANCHOR_TOP_LEFT;
this.defaultOffset = new BMapGL.Size(10, 10);
// 默认所有工具栏都显示
this.defaultDrawingModes = [
BMAP_DRAWING_MARKER,
BMAP_DRAWING_CIRCLE,
BMAP_DRAWING_POLYLINE,
BMAP_DRAWING_POLYGON,
BMAP_DRAWING_RECTANGLE
];
// 工具栏可显示的绘制模式
if (drawingToolOptions.drawingModes) {
this.drawingModes = drawingToolOptions.drawingModes;
} else {
this.drawingModes = this.defaultDrawingModes;
}
// 用户设置停靠位置和偏移量
if (drawingToolOptions.hasCustomStyle) {
if (drawingToolOptions.anchor) {
this.setAnchor(drawingToolOptions.anchor);
}
if (drawingToolOptions.offset) {
this.setOffset(drawingToolOptions.offset);
}
}
}
// 通过JavaScript的prototype属性继承于BMap.Control
DrawingTool.prototype = new BMapGL.Control();
// 自定义控件必须实现自己的initialize方法,并且将控件的DOM元素返回
// 在本方法中创建个div元素作为控件的容器,并将其添加到地图容器中
DrawingTool.prototype.initialize = function (map) {
// 创建一个DOM元素
var container = this.container = document.createElement('div');
container.className = 'BMapGLLib_Drawing';
// 用来设置外层边框阴影
var panel = this.panel = document.createElement('div');
panel.className = 'BMapGLLib_Drawing_panel';
if (this.drawingToolOptions && this.drawingToolOptions.hasCustomStyle && this.drawingToolOptions.scale) {
this._setScale(this.drawingToolOptions.scale);
}
container.appendChild(panel);
// 添加内容
var content = this._generalHtml();
panel.appendChild(content);
// 添加tip
var tip = this.tip = document.createElement('div');
tip.className = 'BMapGLLib_tip';
tip.innerHTML = '<p class="BMapGLLib_tip_title"></p><p class="BMapGLLib_tip_text"></p>';
if (this.drawingToolOptions.enableTips === true) {
panel.appendChild(tip);
}
// 绑定事件
this._bind(panel);
// 添加DOM元素到地图中
if (this.drawingToolOptions.customContainer) {
baidu.g(this.drawingToolOptions.customContainer).appendChild(container);
} else {
map.getContainer().appendChild(container);
}
// 将DOM元素返回
return container;
};
// 生成工具栏的html元素
DrawingTool.prototype._generalHtml = function (map) {
var that = this;
// 鼠标经过工具栏上的提示信息
var tips = {};
tips.hander = '拖动地图';
tips[BMAP_DRAWING_MARKER] = '画点';
tips[BMAP_DRAWING_CIRCLE] = '圆形工具';
tips[BMAP_DRAWING_POLYLINE] = '画折线';
tips[BMAP_DRAWING_POLYGON] = '多边形工具';
tips[BMAP_DRAWING_RECTANGLE] = '矩形工具';
var getItem = function (className, drawingType) {
var ele = document.createElement('a');
ele.className = className;
ele.href = 'javascript:void(0)';
ele.setAttribute('drawingType', drawingType);
ele.setAttribute('onfocus', 'this.blur()');
ele.addEventListener('mouseenter', function (e) {
var drawingType = e.target.getAttribute('drawingType');
var title = tips[drawingType];
if (drawingType === 'hander') {
that.tip.children[0].innerText = title;
that.tip.children[1].innerText = '使用鼠标拖动地图';
} else {
that.tip.className += ' ' + drawingType;
that.tip.children[0].innerText = title;
that.tip.children[1].innerText = '使用' + title + '选出目标区域';
}
that.tip.style.display = 'block';
});
ele.addEventListener('mouseleave', function (e) {
// remove class drawingType
var drawingType = e.target.getAttribute('drawingType');
var newClass = ' ' + that.tip.className.replace(/[\t\r\n]/g, '') + ' ';
while (newClass.indexOf(' ' + drawingType + ' ') >= 0) {
newClass = newClass.replace(' ' + drawingType + ' ', ' ');
}
that.tip.className = newClass.replace(/^\s+|\s+$/g, '');
that.tip.style.display = 'none';
});
return ele;
};
// 生成工具
var fragment = document.createDocumentFragment();
// 取消hander工具的展示交互改为再次点击tool取消active功能
// fragment.appendChild(getItem('BMapGLLib_box BMapGLLib_hander', 'hander'));
for (var i = 0, len = this.drawingModes.length; i < len; i++) {
var classStr = 'BMapGLLib_box BMapGLLib_' + this.drawingModes[i];
if (i == len - 1) {
classStr += ' BMapGLLib_last';
}
fragment.appendChild(getItem(classStr, this.drawingModes[i]));
}
return fragment;
};
/**
* 设置工具栏的缩放比例
*/
DrawingTool.prototype._setScale = function (scale) {
var width = 390,
height = 50,
ml = -parseInt((width - width * scale) / 2, 10),
mt = -parseInt((height - height * scale) / 2, 10);
this.container.style.cssText = [
'-moz-transform: scale(' + scale + ');',
'-o-transform: scale(' + scale + ');',
'-webkit-transform: scale(' + scale + ');',
'transform: scale(' + scale + ');',
'margin-left:' + ml + 'px;',
'margin-top:' + mt + 'px;',
'*margin-left:0px;', // ie6、7
'*margin-top:0px;', // ie6、7
'margin-left:0px\\0;', // ie8
'margin-top:0px\\0;', // ie8
// ie下使用滤镜
'filter: progid:DXImageTransform.Microsoft.Matrix(',
'M11=' + scale + ',',
'M12=0,',
'M21=0,',
'M22=' + scale + ',',
'SizingMethod=\'auto expand\');'
].join('');
};
// 绑定工具栏的事件
DrawingTool.prototype._bind = function (panel) {
var me = this;
baidu.on(this.panel, 'click', function (e) {
var target = baidu.getTarget(e);
var drawingType = target.getAttribute('drawingType');
me.setStyleByDrawingMode(drawingType);
me._bindEventByDraingMode(drawingType);
});
};
// 设置工具栏当前选中的项样式
DrawingTool.prototype.setStyleByDrawingMode = function (drawingType) {
if (!drawingType) {
return;
}
var boxs = this.panel.getElementsByTagName('a');
for (var i = 0, len = boxs.length; i < len; i++) {
var box = boxs[i];
if (box.getAttribute('drawingType') == drawingType) {
var classStr = 'BMapGLLib_box BMapGLLib_' + drawingType + '_hover';
if (i == len - 1) {
classStr += ' BMapGLLib_last';
}
box.className = classStr;
} else {
box.className = box.className.replace(/_hover/, '');
}
}
};
// 设置工具栏当前选中的项样式
DrawingTool.prototype._bindEventByDraingMode = function (drawingType) {
var me = this;
var drawingManager = this.drawingManager;
// 点在拖拽地图的按钮上
// hander工具的逻辑
// if (drawingType == 'hander') {
// drawingManager.close();
// drawingManager._map.enableDoubleClickZoom();
// }
// else {
// drawingManager.setDrawingMode(drawingType);
// drawingManager.open();
// drawingManager._map.disableDoubleClickZoom();
// }
// 关闭hander工具的逻辑
if (drawingManager._isOpen && drawingManager.getDrawingMode() === drawingType) {
drawingManager.close();
drawingManager._map.enableDoubleClickZoom();
} else {
drawingManager.setDrawingMode(drawingType);
drawingManager.open();
drawingManager._map.disableDoubleClickZoom();
}
};
// 用来存储用户实例化出来的drawingmanager对象
var instances = [];
/*
* 关闭其他实例的绘制模式
* @param {DrawingManager} 当前的实例
*/
function closeInstanceExcept(instance) {
var index = instances.length;
while (index--) {
if (instances[index] != instance) {
instances[index].close();
}
}
}
function drawcircle(center, radius) {
var points = [];
var cx = center["lng"],
cy = center["lat"];
var d = radius / 6378800, // circle radius / meters of Earth radius = radians
lat1 = (Math.PI / 180) * cy,
lng1 = (Math.PI / 180) * cx;
for (var i = 0; i < 271; i += 9) {
var tc = (Math.PI / 180) * i,
y = Math.asin(Math.sin(lat1) * Math.cos(d) + Math.cos(lat1) * Math.sin(d) * Math.cos(tc)),
dlng = Math.atan2(Math.sin(tc) * Math.sin(d) * Math.cos(lat1), Math.cos(d) - Math.sin(lat1) * Math.sin(y)),
x = ((lng1 - dlng + Math.PI) % (2 * Math.PI)) - Math.PI,
point = new BMapGL.Point(x * (180 / Math.PI), y * (180 / Math.PI));
points.push(point);
}
var fstPoint = points[0];
points.push(new BMapGL.Point(fstPoint["lng"], fstPoint["lat"]));
return points;
}
function getPointByDistance(srcPoint, distance, direction) {
var cx = srcPoint["lng"],
cy = srcPoint["lat"];
var d = distance / 6378800, // circle radius / meters of Earth radius = radians
lat1 = (Math.PI / 180) * cy,
lng1 = (Math.PI / 180) * cx;
var i,tmplng,tmplat;
switch (direction) {
case 'North':
case 'north':
case 'N':
case 'n':
i = 0;
tmplng = srcPoint.lng;
break;
case 'West':
case 'west':
case 'W':
case 'w':
i = 90;
tmplat = srcPoint.lat;
break;
case 'South':
case 'south':
case 'S':
case 's':
i = 180;
tmplng = srcPoint.lng;
break;
case 'East':
case 'east':
case 'E':
case 'e':
i = 270;
tmplat = srcPoint.lat;
break;
default:
i = ~~direction;
break;
}
var tc = (Math.PI / 180) * i,
y = Math.asin(Math.sin(lat1) * Math.cos(d) + Math.cos(lat1) * Math.sin(d) * Math.cos(tc)),
dlng = Math.atan2(Math.sin(tc) * Math.sin(d) * Math.cos(lat1), Math.cos(d) - Math.sin(lat1) * Math.sin(y)),
x = ((lng1 - dlng + Math.PI) % (2 * Math.PI)) - Math.PI,
point = new BMapGL.Point(tmplng || x * (180 / Math.PI), tmplat || y * (180 / Math.PI));
point.lng = parseFloat(point.lng.toFixed(6));
point.lat = parseFloat(point.lat.toFixed(6));
return point;
}
})();