/// <summary>
/// 将数据库或内存下的一张图层表以这个表名添加到MainDataSet中
/// </summary>
/// <param name="tablename">表名</param>
/// <param name="DataSourceType">数据源类型</param>
public static void AddLayerTable(string tablename, int DataSourceType)
{
try
{
DataTable table = new DataTable();
switch (DataSourceType)
{
case 0: //数据库数据源
table = DB_Service.GetTable(tablename, "select * from " + tablename);
break;
case 1: //内存数据源
if (tablename == "PositionTable")
{
//定位信息表
table = DataTableFactory_Service.MakePositionTable(tablename);
}
else
{
//地图文字表
table = DataTableFactory_Service.MakeMapTextTable(tablename);
}
break;
}
//添加到MainDataSet
DB_Service.MainDataSet.Tables.Add(table);
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 加载指定的Layer至mapImage
/// 注：不刷新地图
/// 标准图层：
/// 名称：TableOrShapeFile
/// 标题：LayerName
/// 分类图层：
/// 名称：TableOrShapeFile + splitKey + ColumnName + splitKey + MaybeValue
/// 标题：Text
/// </summary>
/// <param name="layerName">图层名</param>
/// <param name="mapImage">欲加载到的控件</param>
public static void AddLayer(string layerName, MapImage mapImage, float LabelOffset_X, float LabelOffset_Y)
{
try
{
string[] strArray = Regex.Split(layerName, Global.SplitKey);
DataRow[] rows_layer = DB_Service.MainDataSet.Tables["LayerTable"].Select("TableOrShapeFile = '" + strArray[0] + "'");
//图层
VectorLayer layer;
//图层样式
VectorStyle style = new VectorStyle();
//数据源类型
int DataSourceType = Convert.ToInt32(rows_layer[0]["DataSourceType"]);
//显示次序
int viewOrder = Convert.ToInt32(rows_layer[0]["ViewOrder"]);
//图层点样式
string PointImageID = "";
switch (strArray.Length)
{
case 1:
if (DataSourceType == 0 || DataSourceType == 1)
{
PointImageID = rows_layer[0]["PointImage"].ToString();
}
break;
case 3:
DataRow[] roww = DB_Service.MainDataSet.Tables["LayerSortTable"].Select("TableOrShapeFile = '" + strArray[0] + "' and ColumnName = '" + strArray[1] + "' and MaybeValue = '" + strArray[2] + "'");
PointImageID = roww[0]["PointImage"].ToString();
break;
}
//图层线、面样式
style.Line.Color = Color.FromArgb(Convert.ToInt32(rows_layer[0]["Line_Color"].ToString().Split(',')[0]), Convert.ToInt32(rows_layer[0]["Line_Color"].ToString().Split(',')[1]), Convert.ToInt32(rows_layer[0]["Line_Color"].ToString().Split(',')[2]), Convert.ToInt32(rows_layer[0]["Line_Color"].ToString().Split(',')[3]));
style.Line.Width = Convert.ToInt32(rows_layer[0]["Line_Width"]);
if (Convert.ToBoolean(rows_layer[0]["Fill_IsSolid"]))
{
style.Fill = new SolidBrush(Color.FromArgb(Convert.ToInt32(rows_layer[0]["Fill_Color"].ToString().Split(',')[0]), Convert.ToInt32(rows_layer[0]["Fill_Color"].ToString().Split(',')[1]), Convert.ToInt32(rows_layer[0]["Fill_Color"].ToString().Split(',')[2]), Convert.ToInt32(rows_layer[0]["Fill_Color"].ToString().Split(',')[3])));
}
else
{
style.Fill = new TextureBrush(Resource_Service.GetImage(rows_layer[0]["Fill_Image"].ToString()));
}
if (Convert.ToBoolean(rows_layer[0]["FillLine_Enable"]))
{
style.EnableOutline = true;
style.Outline.Color = Color.FromArgb(Convert.ToInt32(rows_layer[0]["FillLine_Color"].ToString().Split(',')[0]), Convert.ToInt32(rows_layer[0]["FillLine_Color"].ToString().Split(',')[1]), Convert.ToInt32(rows_layer[0]["FillLine_Color"].ToString().Split(',')[2]), Convert.ToInt32(rows_layer[0]["FillLine_Color"].ToString().Split(',')[3]));
style.Outline.Width = Convert.ToInt32(rows_layer[0]["FillLine_Width"]);
}
else
{
style.EnableOutline = false;
}
//加载数据源
if (DataSourceType == 0 || DataSourceType == 1)
{
//数据库数据源
layer = new VectorLayer(layerName, viewOrder, new GeometryFeatureProvider(new FeatureDataTable(DB_Service.GetDataTableByLayerName(layerName))));
//设置图层样式
if (PointImageID != "")
{
style.Symbol = (System.Drawing.Bitmap)Resource_Service.GetImage(PointImageID);
}
}
else
{
//文件数据源
string file = Global.MapPath + strArray[0];
if (File.Exists(file))
{
ShapeFile shpfile = new ShapeFile(file, true);
shpfile.Encoding = System.Text.Encoding.GetEncoding("gb2312");
layer = new VectorLayer(layerName, viewOrder, shpfile);
}
else
{
MessageBox.Show("加载图层失败。\n\n没有找到 " + file + " 的图层文件！", "装载图层");
return;
}
}
//启用图层样式
style.Enabled = true;
layer.Style = style;
//标注图层
LabelLayer labellayer = new LabelLayer("LL" + layerName);
labellayer.Enabled = true;
labellayer.Style.Offset = new PointF(LabelOffset_X, LabelOffset_Y);
if (rows_layer[0]["LabelLayerColName"].ToString() != "")
{
labellayer.LabelColumn = rows_layer[0]["LabelLayerColName"].ToString();
}
else
{
labellayer.LabelColumn = "Name";
}
if (rows_layer[0]["LabelLayerMinShow"] != DBNull.Value)
{
labellayer.MinVisible = Convert.ToDouble(rows_layer[0]["LabelLayerMinShow"]);
}
else
{
labellayer.MinVisible = 0;
}
if (rows_layer[0]["LabelLayerMaxShow"] != DBNull.Value)
{
labellayer.MaxVisible = Convert.ToDouble(rows_layer[0]["LabelLayerMaxShow"]);
}
else
{
labellayer.MaxVisible = 9999999;
}
labellayer.DataSource = layer.DataSource;
//根据不同的图层，设置不同的标注图层风格
switch (strArray[0])
{
case "StationTable":
labellayer.Style.ForeColor = Global.StationNameColor;
labellayer.Style.Font = new Font("黑体", 15, FontStyle.Underline);
break;
case "PositionTable":
//labellayer.Style.ForeColor = Global.PersonNameColor;
labellayer.Style.ForeColor = Color.DodgerBlue; //Color.Black;
labellayer.Style.Font = new Font("黑体", 15, FontStyle.Underline);
break;
case "MapTextTable":
//labellayer.Style.ForeColor = Color.Blue;
labellayer.Style.ForeColor = Color.Black;
labellayer.Style.Font = new Font("黑体", 13, FontStyle.Regular);
break;
default:
labellayer.Style.ForeColor = Color.Black;
labellayer.Style.Font = new Font("黑体", 13, FontStyle.Regular);
break;
}
if (mapImage.Map.Layers.Count == 0)
{
//如果没有最后一个图层，则直接添加
mapImage.Map.Layers.Add(layer);
mapImage.Map.Layers.Add(labellayer);
}
else
{
if (mapImage.Map.Layers[mapImage.Map.Layers.Count - 2].ViewOrder < viewOrder)
{
//最后一个图层的ViewOrder小于将添加的图层：直接添加
mapImage.Map.Layers.Add(layer);
mapImage.Map.Layers.Add(labellayer);
}
else
{
//最后一个图层的ViewOrder大于或者等于要添加的图层：循环判断找出位置插入
for (int i = 0; i < mapImage.Map.Layers.Count; i = i + 2)
{
if (mapImage.Map.Layers[i].ViewOrder >= viewOrder)
{
mapImage.Map.Layers.Insert(i, layer);
mapImage.Map.Layers.Insert(i + 1, labellayer);
break;
}
}
}
}
}
catch (Exception ex)
{
MessageBox.Show("图层 " + layerName + " 加载失败！\n\n" + ex.Message, "装载图层", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
