public static void Init()
{
//为数据框注册添加栅格数据的委托
GeoDo.RSS.Layout.DataFrm.DataFrame.AddFileToCanvasViewerExecutor = (fname, argument, canvas, fileOpenargs, colorTableName) =>
{
//IRgbStretcherProvider rgbStretcherpProvider = null;
//if (fname.ToUpper().EndsWith(".DAT"))
// rgbStretcherpProvider = new RgbStretcherProvider();
IRgbStretcherProvider rgbStretcherpProvider = new RgbStretcherProvider();
if (string.IsNullOrWhiteSpace(colorTableName))
{
colorTableName = GetColorTableName(argument);//兼容最早colortablename放在argument中的模式
}
else
{
colorTableName = "colortablename=" + colorTableName;
}
List <string> options = new List <string>();
if (!string.IsNullOrWhiteSpace(colorTableName))
{
options.Add(colorTableName);
}
if (fileOpenargs != null)
{
options.AddRange(fileOpenargs);
}
IRasterDrawing drawing = new RasterDrawing(fname, canvas, rgbStretcherpProvider, options.ToArray());
drawing.SelectedBandNos = GetDefaultBands(drawing);
IRasterLayer lyr = new RasterLayer(drawing);
canvas.LayerContainer.Layers.Add(lyr);
canvas.PrimaryDrawObject = drawing;
canvas.CurrentEnvelope = drawing.OriginalEnvelope;
drawing.StartLoading(null);
TryLoadAOIMaskLayer(canvas, drawing, fname);
};
//为栅格图例注册颜色表获取委托
GeoDo.RSS.Layout.RasterLegendElement.RasterLegendItemsGetter = (colorTableName) =>
{
ProductColorTable colorTable = ProductColorTableFactory.GetColorTable(colorTableName);
if (colorTable == null)
{
return(null);
}
List <LegendItem> items = new List <LegendItem>();
foreach (ProductColor c in colorTable.ProductColors)
{
if (!c.DisplayLengend)
{
continue;
}
string txt = c.LableText;
items.Add(new LegendItem(txt, c.Color));
}
return(items.Count > 0 ? items.ToArray() : null);
};
}
private void AddData2CanvasViewer(ICanvasViewer cv, string fname)
{
ISmartSession session = _smartSession;
ICanvas canvas = cv.Canvas;
RgbStretcherProvider stretcher = null;
bool isRaster = false;
TryGetRasterStretcher(fname, out stretcher, out isRaster);
if (isRaster)
{
RasterLayerBuilder.CreateAndLoadRasterLayer(session, canvas, fname, stretcher);
}
else
{
TryAddAsVector(fname);
}
}
private void TryGetRasterStretcher(string fname, out RgbStretcherProvider stretcher, out bool isRaster)
{
isRaster = false;
stretcher = null;
try
{
using (IRasterDataProvider prd = GeoDataDriver.Open(fname) as IRasterDataProvider)
{
if (prd != null)
{
isRaster = true;
}
if (prd.BandCount == 1)
{
stretcher = new RgbStretcherProvider();
}
}
}
catch
{
isRaster = false;
stretcher = null;
}
}