private void OnOpenFile(string fileName)
{
// Show message.
this.textBox.AppendText(string.Format("Opening file \'{0}\'...{1}", fileName, Environment.NewLine));
try
{
// Open a stream to the ZIP file.
using (FileStream fileInStream = new FileStream(fileName, FileMode.Open))
{
// Open the ZIP archive.
using (ZipArchive zipArchive = new ZipArchive(fileInStream, ZipArchiveMode.Read))
{
// The shape file name.
string shapeFileName = null;
this.textBox.AppendText(string.Format("Extracting shape ZIP archive...{0}", Environment.NewLine));
foreach (ZipArchiveEntry entry in zipArchive.Entries)
{
// If this is the shape file, save the name.
if (Path.GetExtension(entry.Name) == ".shp")
{
shapeFileName = entry.Name;
}
this.textBox.AppendText(string.Format("- {0}: {1} bytes {2} bytes compressed{3}", entry.Name, entry.Length, entry.CompressedLength, Environment.NewLine));
}
// If there are no entries, throw an exception.
if (null == shapeFileName) throw new FileNotFoundException("The ZIP archive does not contain a shape file.");
// Create the name of a temporary folder.
string tempFolder = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
this.textBox.AppendText(string.Format("Shape file name is: \'{0}\'{1}", shapeFileName, Environment.NewLine));
// Create the temporary folder.
System.IO.Directory.CreateDirectory(tempFolder);
this.textBox.AppendText(string.Format("Creating temporary folder \'{0}\'...{1}", tempFolder, Environment.NewLine));
try
{
// Extract the shapefile contents.
zipArchive.ExtractToDirectory(tempFolder);
// Open the shapefile.
using (Shapefile shapefile = new Shapefile(Path.Combine(tempFolder, shapeFileName)))
{
this.textBox.AppendText(Environment.NewLine);
// Write the basic information.
this.textBox.AppendText(string.Format("Type: {0}, Shapes: {1:n0}{2}", shapefile.Type, shapefile.Count, Environment.NewLine));
this.textBox.AppendText(Environment.NewLine);
// Create a map object.
Map map = new Map(new MapRectangle(
shapefile.BoundingBox.Left,
shapefile.BoundingBox.Top,
shapefile.BoundingBox.Right,
shapefile.BoundingBox.Bottom));
// Write the bounding box of this shape file.
this.textBox.AppendText(string.Format("Bounds: {0},{1} -> {2},{3}{4}",
shapefile.BoundingBox.Left,
shapefile.BoundingBox.Top,
shapefile.BoundingBox.Right,
shapefile.BoundingBox.Bottom,
Environment.NewLine));
// Enumerate all shapes.
foreach (Shape shape in shapefile)
{
// Shape basic information.
//this.textBox.AppendText(string.Format("{0} {1} {2} ", shape.RecordNumber, shape.Type, shape.GetMetadata("name")));
// Create a new shape.
MapShape mapShape;
switch (shape.Type)
{
case ShapeType.Point:
ShapePoint shapePoint = shape as ShapePoint;
mapShape = new MapShapePoint(new MapPoint(shapePoint.Point.X, shapePoint.Point.Y));
break;
case ShapeType.Polygon:
ShapePolygon shapePolygon = shape as ShapePolygon;
//this.textBox.AppendText(string.Format(": {0}", shapePolygon.Parts.Count));
MapShapePolygon mapShapePolygon = new MapShapePolygon(new MapRectangle(
shapePolygon.BoundingBox.Left,
shapePolygon.BoundingBox.Top,
shapePolygon.BoundingBox.Right,
shapePolygon.BoundingBox.Bottom));
foreach(PointD[] part in shapePolygon.Parts)
{
MapPart mapPart = new MapPart();
foreach (PointD point in part)
{
mapPart.Points.Add(point.X, point.Y);
}
mapShapePolygon.Parts.Add(mapPart);
}
mapShape = mapShapePolygon;
break;
default:
throw new NotSupportedException(string.Format("Shape type {0} is not supported.", shape.Type));
}
// Add the shape metadata.
foreach (string name in shape.GetMetadataNames())
{
mapShape.Metadata[name] = shape.GetMetadata(name);
}
// Add the shape to the map.
map.Shapes.Add(mapShape);
//this.textBox.AppendText(Environment.NewLine);
}
this.textBox.AppendText(Environment.NewLine);
// Create a memory stream.
using (MemoryStream memoryStream = new MemoryStream())
{
// Serialize the map data.
map.Write(memoryStream);
// Display the XML.
this.textBox.AppendText(Encoding.UTF8.GetString(memoryStream.ReadToEnd()));
this.textBox.AppendText(Environment.NewLine);
this.textBox.AppendText(Environment.NewLine);
// Set the stream position to zero.
memoryStream.Position = 0;
// Display a dialog to save the file.
if (this.saveFileDialog.ShowDialog(this) == DialogResult.OK)
{
// Create a file stream.
using (FileStream fileOutStream = System.IO.File.Create(this.saveFileDialog.FileName))
{
// Compress the stream.
//using (GZipStream zipStream = new GZipStream(fileOutStream, CompressionLevel.Optimal))
//{
this.textBox.AppendText("Uncompressed data is {0} bytes.{1}".FormatWith(memoryStream.Length, Environment.NewLine));
memoryStream.CopyTo(fileOutStream);
this.textBox.AppendText("Compressed data is {0} bytes.{1}".FormatWith(fileOutStream.Length, Environment.NewLine));
//}
}
}
}
//this.textBox.AppendText(map.ToXml().ToString());
this.textBox.AppendText(Environment.NewLine);
}
}
finally
{
// Delete the temporary folder.
this.textBox.AppendText(Environment.NewLine);
System.IO.Directory.Delete(tempFolder, true);
this.textBox.AppendText(string.Format("Temporary folder \'{0}\' deleted.{1}", tempFolder, Environment.NewLine));
}
}
}
}
catch (Exception exception)
{
this.textBox.AppendText(string.Format("An exception occurred. {0}", exception.Message));
}
this.textBox.AppendText(Environment.NewLine);
this.textBox.AppendText("Done.");
}
// Private methods.
/// <summary>
/// Sets the current map.
/// </summary>
/// <param name="map">The map.</param>
private void OnMapChanged(Map map)
{
// If the map has not changed, do nothing.
if (this.map == map) return;
// Lock the drawing synchronization object.
lock (this.syncDrawing)
{
// Set the current map.
this.map = map;
// Get an exclusive reader lock to the regions list.
this.regions.Lock();
try
{
// Dispose the existing map regions.
foreach (MapRegion region in this.regions)
{
region.Dispose();
}
}
finally
{
this.regions.Unlock();
}
// Clear the regions list.
this.regions.Clear();
// If the current map is not null.
if (null != this.map)
{
// Create the map shapes.
foreach (MapShape shape in map.Shapes)
{
// Switch according to the shape type.
switch (shape.Type)
{
case MapShapeType.Polygon:
// Get the polygon shape.
MapShapePolygon shapePolygon = shape as MapShapePolygon;
// Create a map region for this shape.
MapRegion region = new MapRegion(shapePolygon);
// Update the region.
region.Update(this.mapBounds, this.mapScale);
// Add the map region to the region items.
this.regions.Add(region);
break;
default: continue;
}
}
}
}
// Refresh the current map.
this.OnRefreshMap();
}
