/// <summary>Loads an image from a bitmap file and adds a layer containing the bitmap</summary>
/// <returns>The loaded layer</returns>
public Layer LoadBitmap(String filename)
{
// Note: we do not clear the layers because we're importing a bitmap as a layer
// Load the bitmap and add it as a layer
try
{
Bitmap image = (Bitmap) Bitmap.FromFile(filename);
LayerBitmap layer = new LayerBitmap(new Point(0, 0), image);
layers.Add(layer);
return layer;
}
catch (UnauthorizedAccessException)
{ throw new Exception("U heeft niet de juiste rechten om het bestand te openen voor lezen."); }
catch (System.IO.DirectoryNotFoundException)
{ throw new Exception("Kon het bestand niet vinden."); }
}
/// <summary>Loads the image from the given file</summary>
/// <param name="filename">The file to load from</param>
public void LoadFromFile(String filename)
{
XmlTextReader reader = null;
try
{
// Open the file
reader = new XmlTextReader(filename);
// Read to the root and determine the file version
int version = 0;
while(reader.Read())
{
if(reader.NodeType == XmlNodeType.Element && reader.Name == "schets")
{
// Determine the version
while(reader.MoveToNextAttribute())
{
if(reader.Name == "version")
{
try
{
version = reader.ReadContentAsInt();
break;
}
catch(Exception)
{ throw new Exception("De versie lijkt in een verkeerd formaat te staan."); }
}
}
break;
}
}
if(version != 1)
throw new Exception("Foutieve bestandsversie: " + version + ".");
// Read the layers
try
{
layers.Clear();
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.EndElement && reader.Name == "schets")
break;
else if (reader.NodeType == XmlNodeType.Element && reader.Name.StartsWith("layer"))
{
// Determine the layer type
Layer layer = null;
switch (reader.Name)
{
case LayerText.XML_NAME:
layer = new LayerText(new Point(0, 0), Color.Black, "");
break;
case LayerLine.XML_NAME:
layer = new LayerLine(new Point(0, 0), new Point(1, 1), 3.0f, Color.Black);
break;
case LayerRectFilled.XML_NAME:
layer = new LayerRectFilled(new Point(0, 0), new Point(1, 1), Color.Black);
break;
case LayerRectOpen.XML_NAME:
layer = new LayerRectOpen(new Point(0, 0), new Point(1, 1), 3.0f, Color.Black);
break;
case LayerEllipseFilled.XML_NAME:
layer = new LayerEllipseFilled(new Point(0, 0), new Point(1, 1), Color.Black);
break;
case LayerEllipseOpen.XML_NAME:
layer = new LayerEllipseOpen(new Point(0, 0), new Point(1, 1), 3.0f, Color.Black);
break;
case LayerPath.XML_NAME:
layer = new LayerPath(new Point(0, 0), 3.0f, Color.Black);
break;
case LayerBitmap.XML_NAME:
layer = new LayerBitmap(new Point(0, 0), new Bitmap(1,1));
break;
}
// Read the actual layer contents
if (layer != null)
{
layer.ReadFromXml(reader);
layers.Add(layer);
}
}
else throw new Exception(reader.Name);
}
}
catch(XmlException e)
{ throw new Exception(e.Message); }
catch(Exception e)
{ throw new Exception("Er is een onverwachte fout opgetreden! Foutmelding: " + e.Message); }
}
catch(UnauthorizedAccessException)
{ throw new Exception("U heeft niet de juiste rechten om het bestand te openen voor lezen."); }
catch(System.IO.DirectoryNotFoundException)
{ throw new Exception("Kon het bestand niet vinden."); }
finally
{
// Close the file
reader.Close();
}
}
