ClemensFischer/XAML-Map-Control
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Version 4.12.2 Improved ImageLoader/TileImageLoader

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This commit is contained in:
ClemensF 2019-07-13 19:53:03 +02:00
parent 4a7e384152
commit fefc4e3294
9 changed files with 102 additions and 171 deletions
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49
MapImages/Shared/GroundOverlayPanel.cs
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@ -7,6 +7,7 @@ using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Threading.Tasks;
using System.Xml;
@ -119,7 +120,49 @@ namespace MapControl.Images
}
}
private IEnumerable<ImageOverlay> ReadGroundOverlays(XmlDocument kmlDocument)
private static async Task<IEnumerable<ImageOverlay>> ReadGroundOverlaysFromArchiveAsync(string archiveFile)
{
using (var archive = ZipFile.OpenRead(archiveFile))
{
var docEntry = archive.GetEntry("doc.kml")
?? archive.Entries.FirstOrDefault(e => e.Name.EndsWith(".kml"));
if (docEntry == null)
{
throw new ArgumentException("No KML entry found in " + archiveFile);
}
var kmlDocument = new XmlDocument();
using (var docStream = docEntry.Open())
{
kmlDocument.Load(docStream);
}
var imageOverlays = await Task.Run(() => ReadGroundOverlays(kmlDocument).ToList());
foreach (var imageOverlay in imageOverlays)
{
var imageEntry = archive.GetEntry(imageOverlay.ImagePath);
if (imageEntry != null)
{
using (var zipStream = imageEntry.Open())
using (var memoryStream = new MemoryStream())
{
await zipStream.CopyToAsync(memoryStream);
memoryStream.Seek(0, SeekOrigin.Begin);
imageOverlay.ImageSource = await ImageLoader.LoadImageAsync(memoryStream);
}
}
}
return imageOverlays;
}
}
private static IEnumerable<ImageOverlay> ReadGroundOverlays(XmlDocument kmlDocument)
{
foreach (XmlElement groundOverlayElement in kmlDocument.GetElementsByTagName("GroundOverlay"))
{
@ -150,7 +193,7 @@ namespace MapControl.Images
}
}
private string ReadImagePath(XmlElement element)
private static string ReadImagePath(XmlElement element)
{
string href = null;
@ -167,7 +210,7 @@ namespace MapControl.Images
return href;
}
private LatLonBox ReadLatLonBox(XmlElement element)
private static LatLonBox ReadLatLonBox(XmlElement element)
{
double north = double.NaN;
double south = double.NaN;