private async void ImportMapCommandAction()
{
try
{
MapAndTrees mapAndTrees = await _fileService.ImportMap();
if (mapAndTrees != null)
{
BaumCollection = mapAndTrees.baumListe;
MapSource = mapAndTrees.map;
}
}
catch (Exception)
{
_dialogService.ShowErrorDialog("Etwas ist beim importieren schief gelaufen.");
}
}
public async Task <MapAndTrees> ImportMap()
{
var picker = new Windows.Storage.Pickers.FileOpenPicker();
picker.ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail;
picker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.PicturesLibrary;
picker.FileTypeFilter.Add(".svg");
StorageFile file = await picker.PickSingleFileAsync();
MapFile mapFile = new MapFile();
ObservableCollection <Baum> baumCollection = new ObservableCollection <Baum>();
MapAndTrees mapAndTrees = new MapAndTrees();
if (file.FileType == ".svg")
{
using (IRandomAccessStream stream = await file.OpenReadAsync())
{
XNamespace baum_ns = "http://probaumkontrollen.org/probaumkontrollen";
XNamespace svg_ns = "http://www.w3.org/2000/svg";
XNamespace xlink_ns = "http://www.w3.org/1999/xlink";
string svgString = await Windows.Storage.FileIO.ReadTextAsync(file);
try
{
XDocument xDocument = XDocument.Parse(svgString);
//Geting the map
XElement imageElement = xDocument.Descendants(svg_ns + "image").FirstOrDefault();
string mapString = imageElement.Attribute(xlink_ns + "href").Value;
mapString = mapString.Substring(mapString.IndexOf(",") + 1);
byte[] mapBytes = Convert.FromBase64String(mapString);
using (InMemoryRandomAccessStream imageStream = new InMemoryRandomAccessStream())
{
await imageStream.WriteAsync(mapBytes.AsBuffer());
BitmapImage bitmapImage = new BitmapImage();
imageStream.Seek(0);
try
{
await bitmapImage.SetSourceAsync(imageStream);
}
catch (Exception)
{
_dialogService.ShowErrorDialog("Die importierte Datei enthält keine gültige Karte.");
return(null);
}
mapFile.MapImageSource = bitmapImage;
mapFile.MapBytes = mapBytes;
}
mapFile.IsSvg = false;
mapAndTrees.map = mapFile;
// Getting the list of trees
XElement xBaumliste = xDocument.Descendants().Where(el => el.HasAttributes && el.FirstAttribute.Name.ToString() == "id").FirstOrDefault();
ObservableCollection <Baum> baumliste = new ObservableCollection <Baum>();
if (!xBaumliste.IsEmpty)
{
foreach (var node in xBaumliste.Elements().ToList())
{
XElement xNode = node;
Baum baum = new Baum();
baum.BaumNr = Convert.ToInt16(node.Attribute(baum_ns + "BaumNr").Value);
XElement circleNode = node.Elements(svg_ns + "circle").FirstOrDefault();
Windows.Foundation.Point imagePosition;
Windows.Foundation.Point canvasPosition;
imagePosition.X = double.Parse(circleNode.Attribute("cx").Value, CultureInfo.InvariantCulture);
imagePosition.Y = double.Parse(circleNode.Attribute("cy").Value, CultureInfo.InvariantCulture);
canvasPosition.X = double.Parse(circleNode.Attribute("cx").Value, CultureInfo.InvariantCulture);
canvasPosition.Y = double.Parse(circleNode.Attribute("cy").Value, CultureInfo.InvariantCulture);
baum.ImagePosition = imagePosition;
baum.CanvasPosition = canvasPosition;
baumliste.Add(baum);
mapAndTrees.baumListe = baumliste;
}
}
}
catch (Exception)
{
_dialogService.ShowErrorDialog("Die importierte Datei entspricht nicht dem benötigten Format.");
return(null);
}
}
}
return(mapAndTrees);
}
