/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (_mouse_type == MouseType.DragMap) //拖动地图 鼠标弹起
{
}
if (_mouse_type == MouseType.DrawDownloadArea) //绘制下载区域 弹起鼠标
{
BDownloadRectangle d = _current_drawing as BDownloadRectangle;
if (d != null)
{
LatLngPoint left_down = MapHelper.GetLatLngByScreenLocation(new Point(d.LeftTop.X, d.LeftTop.Y + d.Height), _center, _zoom, ClientSize);
LatLngPoint right_up = MapHelper.GetLatLngByScreenLocation(new Point(d.LeftTop.X + d.Width, d.LeftTop.Y), _center, _zoom, ClientSize);
using (MapDownloadDialog dlg = new MapDownloadDialog(left_down, right_up))
{
if (dlg.ShowDialog() == DialogResult.OK)
{
}
_current_drawing = null;
Invalidate();
}
}
}
_current_cursor_cache = Cursor = Cursors.Arrow;
_mouse_type = MouseType.None;
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (_mouse_type == MouseType.DragMap) //拖拽地图
{
int deltax = e.Location.X - _previous_point_cache.X;
int deltay = e.Location.Y - _previous_point_cache.Y;
LatLngPoint llp = MapHelper.GetLatLngByScreenLocation(new Point(ClientSize.Width / 2 - deltax, ClientSize.Height / 2 - deltay), _center, _zoom, ClientSize);
Center = llp;
_previous_point_cache = e.Location;
}
//
}
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
if (_mouse_type == MouseType.DrawDownloadArea && _current_drawing as BDownloadRectangle != null) //绘制截图矩形
{
(_current_drawing as BDownloadRectangle).Width = e.Location.X - (_current_drawing as BDownloadRectangle).LeftTop.X;
(_current_drawing as BDownloadRectangle).Height = e.Location.Y - (_current_drawing as BDownloadRectangle).LeftTop.Y;
}
}
Invalidate();
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnMouseWheel(MouseEventArgs e)
{
base.OnMouseWheel(e);
//缩放
int z = _zoom + e.Delta / 100;
if (z >= 3 && z <= 19)
{
LatLngPoint p = MapHelper.GetLatLngByScreenLocation(e.Location, _center, _zoom, ClientSize); //鼠标经纬度坐标
PointF pt = MapHelper.GetLocationByLatLng(p, z); //鼠标像素坐标
PointF pt_center = new PointF(pt.X + (ClientSize.Width / 2 - e.Location.X), pt.Y + (e.Location.Y - ClientSize.Height / 2)); //缩放后中心点像素坐标
LatLngPoint p_center = MapHelper.GetLatLngByLocation(pt_center, z); //像素坐标到经纬度坐标
Center = p_center;
Zoom = z;
Invalidate();
}
}
/// <summary>
/// 将位置显示在列表中
/// </summary>
/// <param name="places"></param>
internal void AddPlaces(JToken places)
{
flpPlaces.Controls.Clear(); //清空原来所有位置
if (Parent != null && Parent is TabPage) //如果父控件是tabpage 则选中
{
((Parent as TabPage).Parent as TabControl).SelectedTab = (Parent as TabPage);
}
if (BDirectionBoard != null) //导航控件初始化
{
BDirectionBoard.Clear();
}
//加载位置项
int index = 0; List <BPOI> _list = new List <BPOI>();
foreach (JObject place in places)
{
if (place["location"] != null && place["location"]["lng"] != null && (string)place["location"]["lng"] != "")
{
LatLngPoint location = new LatLngPoint(double.Parse((string)place["location"]["lng"]), double.Parse((string)place["location"]["lat"]));
BPOI poi = new BPOI {
DataSource = place, Index = index, Selected = false, Location = location
};
_list.Add(poi);
BPlaceItem item = new BPlaceItem();
item.Index = index++;
item.POI = poi;
item.SetDestinationPlace += new SetDestinationPlaceEventHandler(item_SetDestinationPlace);
item.SetSourcePlace += new SetSourcePlaceEventHandler(item_SetSourcePlace);
item.PlaceSelectedChanged += new PlaceSelectedChangedEventHandler(item_PlaceSelectedChanged);
item.Height = 104;
flpPlaces.Controls.Add(item);
}
}
if (BMapControl != null)
{
BMapControl.AddPlaces(_list);
}
}
/// <summary>
/// 绘制地图左下角的一些附加信息 如当前坐标、地图级别、logo、版权等
/// </summary>
/// <param name="g"></param>
private void DrawMapInfo(Graphics g)
{
using (GraphicsPath gp = MapHelper.CreateRoundedRectanglePath(new Rectangle(10, Height - 100, 250, 90), 6))
{
using (SolidBrush sb = new SolidBrush(Color.FromArgb(180, Color.White)))
{
g.FillPath(sb, gp);
g.DrawPath(Pens.Black, gp);
using (Font f = new Font("微软雅黑", 11))
{
g.DrawString(MapHelper.GetMapModeTitle(_mode) + "，" + _zoom + "级，" + MapHelper.GetLoadMapModeTitle(_loadmode), f, Brushes.Teal, new PointF(20, Height - 100 + 10));
Point p = PointToClient(Cursor.Position);
if (ClientRectangle.Contains(p))
{
LatLngPoint llp = MapHelper.GetLatLngByScreenLocation(p, _center, _zoom, ClientSize); //当前鼠标经纬度
g.DrawString(Math.Round(llp.Lat, 5) + "，" + Math.Round(llp.Lng, 5), f, Brushes.Teal, new PointF(20, Height - 100 + 35));
}
g.DrawString("BMap.NET 2015 by 周见智", f, Brushes.Teal, new PointF(20, Height - 100 + 60));
}
}
}
}
/// <summary>
/// 根据屏幕坐标计算该点的经纬度坐标
/// </summary>
/// <param name="p"></param>
/// <param name="center"></param>
/// <param name="zoom"></param>
/// <param name="screen_size"></param>
/// <returns></returns>
public static LatLngPoint GetLatLngByScreenLocation(PointF p, LatLngPoint center, int zoom, Size screen_size)
{
PointF cp = GetLocationByLatLng(center, zoom); //中心点像素坐标
//目标点与中心点屏幕坐标差
float delta_x = p.X - screen_size.Width/2;
float delta_y = p.Y - screen_size.Height/2;
PointF dp = new PointF(cp.X + delta_x, cp.Y + delta_y * (-1)); //目标点像素坐标
return GetLatLngByLocation(dp, zoom);
}
/// <summary>
/// 根据经纬度坐标计算该点在屏幕中的坐标
/// </summary>
/// <param name="p">要计算的经纬度</param>
/// <param name="center">屏幕中心经纬度</param>
/// <param name="zoom">地图当前缩放级别</param>
/// <param name="screen_size">屏幕大小</param>
/// <returns></returns>
public static Point GetScreenLocationByLatLng(LatLngPoint p, LatLngPoint center, int zoom, Size screen_size)
{
PointF dp = GetLocationByLatLng(p, zoom); //目标点的像素坐标
PointF cp = GetLocationByLatLng(center, zoom); //中心点的像素坐标
//计算目标点和中心点像素坐标差
double delta_x = dp.X - cp.X;
double delta_y = dp.Y - cp.Y;
//转换成屏幕坐标系统的坐标 并返回
return new Point((int)((float)screen_size.Width / 2 + delta_x), (int)((float)screen_size.Height / 2 + (-1) * delta_y));
}
/// <summary>
/// 根据经纬度计算两点实际距离（m）
/// </summary>
/// <param name="p1">第一个经纬度坐标点</param>
/// <param name="p2">第二个经纬度坐标点</param>
/// <returns></returns>
public static double GetDistanceByLatLng(LatLngPoint p1, LatLngPoint p2)
{
double radLat1 = rad(p1.Lat);
double radLat2 = rad(p2.Lat);
double a = radLat1 - radLat2;
double b = rad(p1.Lng) - rad(p2.Lng);
double s = 2 * Math.Asin(Math.Sqrt(Math.Pow(Math.Sin(a / 2), 2) +
Math.Cos(radLat1) * Math.Cos(radLat2) * Math.Pow(Math.Sin(b / 2), 2)));
s = s * EARTH_RADIUS;
s = Math.Round(s * 10000) / 10000;
return s;
}
/// <summary>
/// 周边搜索
/// </summary>
/// <param name="query"></param>
/// <param name="center"></param>
void _bTipControl_SearchNearbyStarted(string query, LatLngPoint center)
{
((Action)delegate()
{
PlaceService ps = new PlaceService();
JObject places = ps.SearchInCircle(query, center.Lat + "," + center.Lng, 5000); //默认周边5km
this.Invoke((Action)delegate()
{
if (BPlacesBoard != null)
{
BPlacesBoard.AddPlaces(places["results"]); //具体json格式参见api文档
}
});
}).BeginInvoke(null, null);
}
/// <summary>
/// 矩形区域搜索
/// </summary>
/// <param name="searchName"></param>
void _bQuickSearchControl_QuickSearch(string searchName)
{
LatLngPoint leftbottom = new LatLngPoint(_b_bound.LeftTop.Lng, _b_bound.RightBottom.Lat);
LatLngPoint righttop = new LatLngPoint(_b_bound.RightBottom.Lng, _b_bound.LeftTop.Lat);
((Action)delegate()
{
PlaceService ps = new PlaceService();
JObject places = ps.SearchInBound(searchName, leftbottom.Lat + "," + leftbottom.Lng + "," + righttop.Lat + "," + righttop.Lng);//区域搜索
this.Invoke((Action)delegate()
{
if (BPlacesBoard != null)
{
BPlacesBoard.AddPlaces(places["results"]); //具体json格式参见api文档
}
});
}).BeginInvoke(null, null);
_bQuickSearchControl.Visible = false;
}
/// <summary>
/// 城市切换
/// </summary>
/// <param name="cityName"></param>
void _bCityControl_SelectedCityChanged(string cityName)
{
_bCityControl.Visible = false;
_currentCity = cityName;
if (BPlaceBox != null) //关联的位置输入框
{
BPlaceBox.CurrentCity = cityName;
}
if (BPlacesBoard != null) //关联的位置列表控件
{
BPlacesBoard.CurrentCity = cityName;
}
if (BDirectionBoard != null) //关联的导航控件
{
BDirectionBoard.CurrentCity = _currentCity;
}
_bMarkerTipControl.CurrentCity = _currentCity;
_bPOITipControl.CurrentCity = _currentCity;
_bPointTipControl.CurrentCity = _currentCity;
Invalidate();
((Action)delegate() //定位到指定城市
{
GeocodingService gs = new GeocodingService();
JObject city_location = gs.Geocoding(_currentCity);
if (city_location != null && city_location["result"] != null)
{
Center = new LatLngPoint(double.Parse((string)city_location["result"]["location"]["lng"]), double.Parse((string)city_location["result"]["location"]["lat"]));
Locate(false);
}
this.Invoke((Action)delegate()
{
Zoom = 12;
Invalidate();
});
}).BeginInvoke(null, null);
}
ArrayList _waittodownload = new ArrayList(); //待下载图片集合
public MapDownloadDialog(LatLngPoint p1, LatLngPoint p2)
{
InitializeComponent();
this.p1 = p1;
this.p2 = p2;
}
/// <summary>
/// 设置地图中的导航路线（可以设为null表示清空）
/// </summary>
/// <param name="route"></param>
internal void SetRoute(BRoute route)
{
_b_route = route;
_bPointTipControl.Visible = false;
_bPOITipControl.Visible = false;
_bMarkerEditorControl.Visible = false;
_bMarkerTipControl.Visible = false;
if (_theRouteStart != null && _theRouteEnd != null) //定位到路线中心
{
Center = new LatLngPoint((_theRouteEnd.Location.Lng + _theRouteStart.Location.Lng) / 2, (_theRouteStart.Location.Lat + _theRouteEnd.Location.Lat) / 2);
Zoom = 13;
Locate(false);
SyncControlsLocation();
}
Invalidate();
}
/// <summary>
/// 定位
/// </summary>
/// <param name="mylocation">为true表示定位自己 否则定位当前地图中的城市</param>
private void Locate(bool mylocation)
{
//定位位置
((Action)(delegate()
{
if (mylocation) //定位自己
{
IPService ips = new IPService();
JObject _location = ips.LocationByIP();
if (_location != null && _location["content"] != null)
{
_currentCity = (string)(_location["content"]["address_detail"]["city"]); //返回JSON结构请参见百度API文档
_center = new LatLngPoint(double.Parse((string)_location["content"]["point"]["x"]), double.Parse((string)_location["content"]["point"]["y"]));
}
}
else //定位地图中心点
{
GeocodingService gs = new GeocodingService();
JObject _location = gs.DeGeocoding(_center.Lat + "," + _center.Lng);
if (_location != null)
{
if (_location["result"] != null && _location["result"]["addressComponent"] != null)
{
if (_zoom <= 8) //定位到国家
{
_currentCity = (string)(_location["result"]["addressComponent"]["country"]); //返回JSON结构请参见百度API文档
}
else if (_zoom <= 10) //定位到省份
{
_currentCity = (string)(_location["result"]["addressComponent"]["province"]); //返回JSON结构请参见百度API文档
}
else if (_zoom <= 18) //定位到城市
{
if (_location["result"]["addressComponent"]["city"] != null)
_currentCity = (string)(_location["result"]["addressComponent"]["city"]); //返回JSON结构请参见百度API文档
}
//else //定位到县区
//{
// if (_location["result"]["addressComponent"]["district"] != null)
// _currentCity = (string)(_location["result"]["addressComponent"]["district"]); //返回JSON结构请参见百度API文档
//}
}
}
}
this.Invoke((Action)delegate()
{
Invalidate();
if (BPlaceBox != null) //关联的位置输入控件
{
BPlaceBox.CurrentCity = _currentCity;
}
if (BPlacesBoard != null) //关联的位置列表控件
{
BPlacesBoard.CurrentCity = _currentCity;
}
if (BDirectionBoard != null) //关联的导航控件
{
BDirectionBoard.CurrentCity = _currentCity;
}
_bMarkerTipControl.CurrentCity = _currentCity;
_bPOITipControl.CurrentCity = _currentCity;
_bPointTipControl.CurrentCity = _currentCity;
});
})).BeginInvoke(null, null);
}
/// <summary>
/// 根据经纬度坐标计算该点的像素坐标
/// </summary>
/// <param name="p">要计算的经纬度</param>
/// <param name="zoom">地图当前缩放级别</param>
/// <returns></returns>
public static PointF GetLocationByLatLng(LatLngPoint p, int zoom)
{
PointF mer_p = LatLng2Mercator(p); //墨卡托坐标
return new PointF((float)(mer_p.X / Math.Pow(2, 18 - zoom)), (float)(mer_p.Y / Math.Pow(2, 18 - zoom)));
}
private static PointF LatLng2Mercator(LatLngPoint p)
{
double[] arr = null;
double n_lat = p.Lat > 74 ? 74 : p.Lat;
n_lat = n_lat < -74 ? -74 : n_lat;
for (var i = 0; i < array1.Length; i++)
{
if (p.Lat >= array1[i])
{
arr = array2[i];
break;
}
}
if (arr == null) {
for (var i = array1.Length - 1; i >= 0; i--) {
if (p.Lat <= -array1[i])
{
arr = array2[i];
break;
}
}
}
double[] res = Convertor(p.Lng, p.Lat, arr);
return new PointF((float)res[0], (float)res[1]);
}
/// <summary>
/// 设置路线中高亮部分
/// </summary>
/// <param name="path"></param>
/// <param name="enlarge"></param>
internal void SetHighlightPath(string path, bool enlarge)
{
string[] points = path.Split(';');
if (_b_route != null)
{
_b_route.HighlightPath = path;
if (enlarge) //放大定位
{
LatLngPoint lp = new LatLngPoint(double.Parse(points[0].Split(',')[0]), double.Parse(points[0].Split(',')[1]));
Center = lp;
Zoom = 18;
Locate(false);
SyncControlsLocation();
}
Invalidate();
}
}