/// <summary>
/// Fetches the thumbnail of a symbol in a symbol library
/// </summary>
/// <param name="conn"></param>
/// <param name="symbolLibId"></param>
/// <param name="symbolName"></param>
/// <returns></returns>
internal static Image GetSymbol(IServerConnection conn, string symbolLibId, string symbolName)
{
//NOTE: This could be nasty performance-wise if invoked at lot of times in succession
//But these types of symbols are deprecated anyway, so we can live with it, because people
//shouldn't be using these anymore (and thus this method by extension)
var ds = ImageSymbolConverter.PrepareSymbolDrawingSource(conn, symbolLibId);
//Now we should be able to query it via Drawing Service APIs
var drawSvc = (IDrawingService)conn.GetService((int)ServiceType.Drawing);
//Each section in the symbols.dwf represents a symbol
var sectionList = drawSvc.EnumerateDrawingSections(ds.ResourceID);
foreach (var sect in sectionList.Section)
{
if (sect.Title == symbolName)
{
var sectResources = drawSvc.EnumerateDrawingSectionResources(ds.ResourceID, sect.Name);
foreach (var res in sectResources.SectionResource)
{
if (res.Role.ToUpper() == StringConstants.Thumbnail.ToUpper())
{
using (var rs = drawSvc.GetSectionResource(ds.ResourceID, res.Href))
{
return(Image.FromStream(rs));
}
}
}
}
}
return(null);
}
private void LoadSymbols(string symResId)
{
var ds = ImageSymbolConverter.PrepareSymbolDrawingSource(_conn, symResId);
//Now we should be able to query it via Drawing Service APIs
var drawSvc = (IDrawingService)_conn.GetService((int)ServiceType.Drawing);
//Each section in the symbols.dwf represents a symbol
var sectionList = drawSvc.EnumerateDrawingSections(ds.ResourceID);
lstSymbols.Items.Clear();
int idx = 0;
var imgList = new ImageList();
imgList.ImageSize = new Size(32, 32);
var symbols = new List <ListViewItem>();
foreach (var sect in sectionList.Section)
{
var sectResources = drawSvc.EnumerateDrawingSectionResources(ds.ResourceID, sect.Name);
foreach (var res in sectResources.SectionResource)
{
if (res.Role.ToUpper() == StringConstants.Thumbnail.ToUpper())
{
using (var rs = drawSvc.GetSectionResource(ds.ResourceID, res.Href))
{
Image img = Image.FromStream(rs);
imgList.Images.Add(img);
var item = new ListViewItem(sect.Title);
item.ImageIndex = idx;
symbols.Add(item);
idx++;
}
}
}
}
lstSymbols.SmallImageList = imgList;
lstSymbols.LargeImageList = imgList;
foreach (var sym in symbols)
{
lstSymbols.Items.Add(sym);
}
}
private object SymbolExtractionWorker(BackgroundWorker worker, DoWorkEventArgs e, params object[] args)
{
int processed = 0;
IServerConnection conn = (IServerConnection)args[0];
string symbolLib = (string)args[1];
List <string> symbols = (List <string>)args[2];
string targetFolder = (string)args[3];
ImageSymbolConverter conv = new ImageSymbolConverter(conn, symbolLib);
conv.ExtractSymbols(targetFolder, symbols, (count, total) =>
{
processed = count;
int pc = (int)((double)count / (double)total);
worker.ReportProgress(pc);
});
return(processed);
}
