public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc != null)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "ESRI Prj File(*.prj)|*.prj";
if (dlg.ShowDialog() == DialogResult.OK)
{
ISpatialReference sf = SpatialReferenceFactory.GetSpatialReferenceByPrjFile(dlg.FileName);
if (sf == null)
{
MsgBox.ShowInfo("文件\"" + dlg.FileName + "\"不是标准的OGC WKT空间参考描述格式。");
return(value);
}
if (sf.ProjectionCoordSystem == null)
{
MsgBox.ShowInfo("您只能选择投影坐标系统。");
return(value);
}
MsgBox.ShowInfo("空间参考设置成功。\n要想生效请先保存地图配置文件(*.mcd),然后重新打开。");
return(sf);
}
}
return(value);
}
protected override void Init()
{
if (_reader == null)
{
BeginRead();
}
string prjFile = Path.Combine(Path.GetDirectoryName(_fileUrl),
Path.GetFileNameWithoutExtension(_fileUrl) + ".prj");
try
{
_spatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile(prjFile);
}
catch (Exception ex)
{
Log.WriterException(ex);
}
_fullEnvelope = _reader.Envelope.Clone() as Envelope;
AdjustZeroWidthEnvelope(_fullEnvelope);
_shapeType = _reader.ShapeType;
_coordType = _spatialRef != null && _spatialRef.ProjectionCoordSystem != null ? enumCoordinateType.Projection : enumCoordinateType.Geographic;
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_fields = _reader.Fields;
_isInited = true;
}
public RstReader(string filename)
{
_geoImage = IGeoImage.GeoOpen(filename);
GeoImage g = _geoImage as GeoImage;
_fullEnvelope = new Envelope(g.MinX, g.MinY, g.MaxX, g.MaxY);
_coordType = g.IsProjected ? enumCoordinateType.Projection : enumCoordinateType.Geographic;
_sref = SpatialReferenceFactory.GetSpatialReferenceByWKT(g.ProjectDescription, enumWKTSource.GDAL);
_byteCountPerPixel = GetBandCount(_geoImage.DataType);
}
public FeatureSplitterByProjection(string spatialRef)
{
ISpatialReference spRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(spatialRef, enumWKTSource.EsriPrjFile);
if (spRef != null)
{
_computer = new SplitRangesComputer(spRef);
_isNeedSplit = _computer.ComputeValidGeoRange(out _centerLont, out _minLat, out _maxLat, out _minLon, out _maxLon);
}
}
private void ParseProjectionInfo(string prjFile)
{
try
{
_spatialReference = SpatialReferenceFactory.GetSpatialReferenceByPrjFile(prjFile);
}
catch (Exception ex)
{
Log.WriterException("ShapeFileReader", "ParseProjectionInfo", ex);
}
}
public static MapArguments FromXElement(XElement ele)
{
if (ele == null)
{
return(null);
}
MapArguments arg = new MapArguments();
arg.BackColor = ColorHelper.StringToColor(ele.Attribute("backcolor").Value);
if (ele.Element("FullExtent") != null)
{
arg.FullExtent = XElementToEnvelope(ele.Element("FullExtent"));
}
if (ele.Element("Extent") != null)
{
arg.Extent = XElementToEnvelope(ele.Element("Extent"));
}
if (ele.Attribute("smoothingmode") != null)
{
string sm = ele.Attribute("smoothingmode").Value;
SmoothingMode smode = SmoothingMode.Default;
foreach (SmoothingMode s in Enum.GetValues(typeof(SmoothingMode)))
{
if (s.ToString() == sm)
{
smode = s;
break;
}
}
arg.SmoothingMode = smode;
}
if (ele.Attribute("spatialreference") != null)
{
try
{
string sf = ele.Attribute("spatialreference").Value;
arg._targetSpatialReference = SpatialReferenceFactory.GetSpatialReferenceByWKT(sf, enumWKTSource.EsriPrjFile);
}
catch (Exception ex)
{
Log.WriterException(ex);
}
}
return(arg);
}
