Bing Map 自定义操作类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Media;
using Microsoft.Maps.MapControl;
using Microsoft.Maps.MapControl.Core;
using Microsoft.Maps.MapControl.Navigation;
using Microsoft.Maps.MapControl.Overlays;

namespace CustomMap.Lib
{
    /*
     * 功能描述
     * 本类应该有一个强大的图层管理功能
     * 至少应该要具有如下的方法:
     * 1.插入用户控件,参数有:所在图层,位置信息,控件信息
     * 2.模式设置:是卫星地图/路径地图
     * 3.定位中心点:缩放级别/中心点
     * 4.测距:点集
     * 5.添加/清理标注信息
     * 6.清除指定图层/清除所有图层
     * 7.图例的操作
     * 8.保障好在加载不同的地图时,一切均能正常
    */
    /// <summary>
    /// 地图操作控件
    /// </summary>
    public class MapEx : Microsoft.Maps.MapControl.Map
    {
        #region 字段声明

        /// <summary>
        /// 偏移经度
        /// </summary>
        private double dLongWarp = 0;

        /// <summary>
        /// 偏移纬度
        /// </summary>
        private double dLatWarp = 0;

        #endregion

        #region 属性声明

        /// <summary>
        /// 图层名称集合
        /// </summary>
        private List<MapLayerInfo> listLayer = null;

        public List<MapLayerInfo> ListLayer
        {
            get
            {
                return listLayer;
            }
        }

        #endregion

        #region 构造函数

        /// <summary>
        /// 构造函数
        /// </summary>
        public MapEx()
        {
            listLayer = new List<MapLayerInfo>();

            #region 事件注册

            this.MapForeground.TemplateApplied += delegate(object sender, EventArgs args)
            {
                this.MapForeground.NavigationBar.TemplateApplied += new EventHandler(NavigationBar_TemplateApplied);
            };

            this.LoadingError += delegate(object sender, LoadingErrorEventArgs e)
            {
                //移除 Unable to contact server 的错误消息 
                try
                {
                    (VisualTreeHelper.GetChild(this, 0) as MapLayer).Children.Remove(VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(this, 0), 5) as LoadingErrorMessage);
                }
                catch { }
            };
            #endregion

            btnRoad_Click(null, null);
        }

        #endregion

        #region 地图自定义菜单操作

        void NavigationBar_TemplateApplied(object sender, EventArgs e)
        {
            //清除导航菜单上现有项 
            NavigationBar navBar = this.MapForeground.NavigationBar;
            navBar.HorizontalPanel.Children.Clear();
            navBar.VerticalPanel.Children.Clear();

            //添加自定义导航菜单项 
            ChangeMapModeButton btnAerial = new ChangeMapModeButton(new AerialMode(true), "卫星地图", "点击导航到卫星地图");
            btnAerial.IsChecked = true;
            navBar.HorizontalPanel.Children.Add(btnAerial);
            btnAerial.Click += new RoutedEventHandler(btnAerial_Click);

            ChangeMapModeButton btnRoad = new ChangeMapModeButton(new RoadMode(), "路径地图", "点击导航到路径地图");
            btnRoad.IsChecked = false;
            navBar.HorizontalPanel.Children.Add(btnRoad);
            btnRoad.Click += new RoutedEventHandler(btnRoad_Click);

            ChangeMapModeButton btnStreet = new ChangeMapModeButton(new RoadMode(), "街道地图", "点击导航到街道地图");
            btnStreet.IsChecked = false;
            navBar.HorizontalPanel.Children.Add(btnStreet);
            btnStreet.Click += new RoutedEventHandler(btnStreet_Click);
        }

        /// <summary>
        /// 卫星地图
        /// </summary>
        void btnAerial_Click(object sender, RoutedEventArgs e)
        {
            //中文地图---目前Bing因为法律问题暂时不支持中文卫星地图访问
            MapTileLayer tileLayer = new MapTileLayer();
            GoogleWXSource gts = new GoogleWXSource();
            tileLayer.TileSources.Add(gts);
            this.Children.Add(tileLayer);
            this.Mode = new AerialMode();
            dLatWarp = 0;
            dLongWarp = 0;
        }

        /// <summary>
        /// 路径地图
        /// </summary>
        void btnRoad_Click(object sender, RoutedEventArgs e)
        {
            MapTileLayer tileLayer = new MapTileLayer();
            GoogleTileSource gts = new GoogleTileSource();
            tileLayer.TileSources.Add(gts);
            this.Children.Add(tileLayer);
            this.Mode = new MercatorMode();
            dLatWarp = -0.00041397;
            dLongWarp = 0.00557889;
        }

        /// <summary>
        /// 街道地图
        /// </summary>
        void btnStreet_Click(object sender, RoutedEventArgs e)
        {
            MapTileLayer tileLayer = new MapTileLayer();
            StreetTileSource sts = new StreetTileSource();
            tileLayer.TileSources.Add(sts);
            this.Children.Add(tileLayer);
            this.Mode = new MercatorMode();
            dLatWarp = -0.0007038;
            dLongWarp = 0.0054717;
        }

        #endregion

        #region 地图操作方法

        /// <summary>
        /// 地图中心点定位
        /// </summary>
        /// <param name="latitude">纬度</param>
        /// <param name="longitude">经度</param>
        /// <param name="zoomLevel">缩放级别</param>
        public void SetPosition(double latitude, double longitude, double zoomLevel)
        {
            latitude += dLatWarp;
            longitude += dLongWarp;
            Location location = new Location(latitude, longitude);
            zoomLevel = zoomLevel == 0 ? this.ZoomLevel : zoomLevel;
            this.SetView(location, zoomLevel);
        }

        /// <summary>
        /// 添加UI对象
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <param name="latitude">纬度</param>
        /// <param name="longitude">经度</param>
        /// <param name="element">UIElement对象</param>
        public void AddUIElement(string layerName, double latitude, double longitude, UIElement element)
        {
            MapLayer MapLayer = this.CreateLayer(layerName);
            // 获UIElement对象名称
            string name = element.GetValue(NameProperty).ToString();
            // 判断该UIElement对象在地图上是否存在
            // 如果存在则移除
            UIElement uc = MapLayer.FindName(name) as UIElement;
            if (uc != null)
                MapLayer.Children.Remove(uc);
            PositionOrigin position = PositionOrigin.Center;
            latitude += dLatWarp;
            longitude += dLongWarp;
            Location location = new Location(latitude, longitude);
            MapLayer.AddChild(element, location, position);
        }

        /// <summary>
        /// 重载添加UI对象
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <param name="latitude">纬度</param>
        /// <param name="longitude">经度</param>
        /// <param name="element">UIElement对象</param>
        /// <param name="position">偏移定位</param>
        public void AddUIElement(string layerName, double latitude, double longitude, UIElement element, PositionOrigin position)
        {
            MapLayer MapLayer = this.CreateLayer(layerName);
            // 获UIElement对象名称
            string name = element.GetValue(NameProperty).ToString();
            // 判断该UIElement对象在地图上是否存在
            // 如果存在则移除
            UIElement uc = MapLayer.FindName(name) as UIElement;
            if (uc != null)
                MapLayer.Children.Remove(uc);
            latitude += dLatWarp;
            longitude += dLongWarp;
            Location location = new Location(latitude, longitude);
            MapLayer.AddChild(element, location, position);
        }

        /// <summary>
        /// 重载添加UI对象
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <param name="latitude">纬度</param>
        /// <param name="longitude">经度</param>
        /// <param name="element">UIElement对象</param>
        /// <param name="zoomLevel">地图缩放级别</param>
        public void AddUIElement(string layerName, double latitude, double longitude, UIElement element, double zoomLevel)
        {
            MapLayer MapLayer = this.CreateLayer(layerName);
            // 获UIElement对象名称
            string name = element.GetValue(NameProperty).ToString();
            // 判断该UIElement对象在地图上是否存在
            // 如果存在则移除
            UIElement uc = MapLayer.FindName(name) as UIElement;
            if (uc != null)
                MapLayer.Children.Remove(uc);
            PositionOrigin position = PositionOrigin.Center;
            latitude += dLatWarp;
            longitude += dLongWarp;
            Location location = new Location(latitude, longitude);
            MapLayer.AddChild(element, location, position);
            this.SetView(location, zoomLevel);
        }

        /// <summary>
        /// 重载添加UI对象
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <param name="latitude">纬度</param>
        /// <param name="longitude">经度</param>
        /// <param name="element">UIElement对象</param>
        /// <param name="zoomLevel">地图缩放级别</param>
        /// <param name="position">偏移定位</param>
        public void AddUIElement(string layerName, double latitude, double longitude, UIElement element, double zoomLevel, PositionOrigin position)
        {
            MapLayer MapLayer = this.CreateLayer(layerName);
            // 获UIElement对象名称
            string name = element.GetValue(NameProperty).ToString();
            // 判断该UIElement对象在地图上是否存在
            // 如果存在则移除
            UIElement uc = MapLayer.FindName(name) as UIElement;
            if (uc != null)
                MapLayer.Children.Remove(uc);
            latitude += dLatWarp;
            longitude += dLongWarp;
            Location location = new Location(latitude, longitude);
            MapLayer.AddChild(element, location, position);
            this.SetView(location, zoomLevel);
        }

        /// <summary>
        /// 创建图层
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <returns>返回当前添加的图层</returns>
        public MapLayer CreateLayer(string layerName)
        {
            MapLayerInfo MyLayer = listLayer.FirstOrDefault(n => n.LayerName == layerName);
            if (MyLayer == null)
            {
                MyLayer = new MapLayerInfo()
                {
                    LayerName = layerName,
                    MapLayer = new MapLayer()
                };
                this.Children.Add(MyLayer.MapLayer);
                listLayer.Add(MyLayer);
            }
            return MyLayer.MapLayer;
        }

        /// <summary>
        /// 清除用户控件
        /// </summary>
        /// <param name="layerName">图层名称</param>
        /// <param name="name">对象名称</param>
        public void RemoveUIElement(string layerName, string name)
        {
            MapLayerInfo MyLayer = listLayer.FirstOrDefault(n => n.LayerName == layerName);
            if (MyLayer == null) return;
            UIElement uc = MyLayer.MapLayer.FindName(name) as UIElement;
            if (uc == null) return;
            MyLayer.MapLayer.Children.Remove(uc);
        }

        /// <summary>
        /// 清除指定图层
        /// <param name="layerName">图层名称</param>
        /// </summary>
        public void RemoveLayer(string layerName)
        {
            MapLayerInfo MyLayer = listLayer.FirstOrDefault(n => n.LayerName == layerName);
            if (MyLayer == null) return;
            // 清空指定图层里面对象
            MyLayer.MapLayer.Children.Clear();
            // 清空当前图层
            this.Children.Remove(MyLayer.MapLayer);
            // 从图层集合中移除当前图层
            this.listLayer.Remove(MyLayer);
        }

        /// <summary>
        /// 清除地图上所有图层信息
        /// </summary>
        public void RemoveAll()
        {
            if (listLayer.Count == 0) return;
            foreach (MapLayerInfo layer in listLayer)
            {
                layer.MapLayer.Children.Clear();
                this.Children.Remove(layer.MapLayer);
            }
            listLayer.Clear();
        }

        #endregion
    }

    #region 图层信息类

    /// <summary>
    /// 图层信息
    /// </summary>
    public class MapLayerInfo
    {
        /// <summary>
        /// 图层名称
        /// </summary>
        public string LayerName { get; set; }

        /// <summary>
        /// 图层对象
        /// </summary>
        public MapLayer MapLayer { get; set; }
    }

    #endregion
}