ClemensFischer/XAML-Map-Control
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Version 1.8.0: Fixed MapImage, added ImageTileSource to Silverlight and WinRT versions, modified TileImageLoader.

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ClemensF 2013-11-12 21:14:53 +01:00
parent 8eedb82a9d
commit 9f4ab0f3e3
29 changed files with 331 additions and 285 deletions
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4
Caching/FileDbCache/Properties/AssemblyInfo.cs
View file

@ -8,8 +8,8 @@ using System.Runtime.InteropServices;
[assembly: AssemblyCompany("Clemens Fischer")]
[assembly: AssemblyCopyright("Copyright © Clemens Fischer 2012-2013")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyVersion("1.7.0")]
[assembly: AssemblyFileVersion("1.7.0")]
[assembly: AssemblyVersion("1.8.0")]
[assembly: AssemblyFileVersion("1.8.0")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCulture("")]
[assembly: ComVisible(false)]

93
Caching/ImageFileCache/ImageFileCache.cs
View file

@ -16,12 +16,22 @@ namespace Caching
{
/// <summary>
/// ObjectCache implementation based on local image files.
/// The only valid data type for cached values is a byte[], which contains
/// an 8-byte binary UTC time (as created by DateTime.ToBinary), followed
/// by a PNG, JPEG, BMP, GIF, TIFF or WMP image buffer.
/// The only valid data type for cached values is a byte array containing an
/// 8-byte timestamp followed by a PNG, JPEG, BMP, GIF, TIFF or WMP image buffer.
/// </summary>
public class ImageFileCache : ObjectCache
{
private static readonly Tuple<string, byte[]>[] imageFileTypes = new Tuple<string, byte[]>[]
{
new Tuple<string, byte[]>(".png", new byte[] { 0x89, 0x50, 0x4E, 0x47, 0xD, 0xA, 0x1A, 0xA }),
new Tuple<string, byte[]>(".jpg", new byte[] { 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, 0x4A, 0x46, 0x49, 0x46, 0 }),
new Tuple<string, byte[]>(".bmp", new byte[] { 0x42, 0x4D }),
new Tuple<string, byte[]>(".gif", new byte[] { 0x47, 0x49, 0x46 }),
new Tuple<string, byte[]>(".tif", new byte[] { 0x49, 0x49, 42, 0 }),
new Tuple<string, byte[]>(".tif", new byte[] { 0x4D, 0x4D, 0, 42 }),
new Tuple<string, byte[]>(".wdp", new byte[] { 0x49, 0x49, 0xBC }),
};
private static readonly FileSystemAccessRule fullControlRule = new FileSystemAccessRule(
new SecurityIdentifier(WellKnownSidType.BuiltinUsersSid, null),
FileSystemRights.FullControl, AccessControlType.Allow);
@ -169,36 +179,31 @@ namespace Caching
var buffer = value as byte[];
if (buffer == null)
if (buffer == null || buffer.Length <= 8)
{
throw new NotSupportedException("The parameter value must be a byte[].");
throw new NotSupportedException("The parameter value must be a byte[] containing at least 9 bytes.");
}
MemoryCache.Default.Set(key, buffer, policy);
var extension = GetFileExtension(buffer);
var path = GetPath(key) + GetFileExtension(buffer);
if (extension != null)
try
{
var path = GetPath(key) + extension;
Directory.CreateDirectory(Path.GetDirectoryName(path));
try
using (var fileStream = new FileStream(path, FileMode.Create))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
using (var fileStream = new FileStream(path, FileMode.Create))
{
fileStream.Write(buffer, 8, buffer.Length - 8);
}
var fileSecurity = File.GetAccessControl(path);
fileSecurity.AddAccessRule(fullControlRule);
File.SetAccessControl(path, fileSecurity);
}
catch (Exception ex)
{
Trace.TraceWarning("ImageFileCache: Writing file {0} failed: {1}", path, ex.Message);
fileStream.Write(buffer, 8, buffer.Length - 8);
}
var fileSecurity = File.GetAccessControl(path);
fileSecurity.AddAccessRule(fullControlRule);
File.SetAccessControl(path, fileSecurity);
}
catch (Exception ex)
{
Trace.TraceWarning("ImageFileCache: Writing file {0} failed: {1}", path, ex.Message);
}
}
@ -274,42 +279,24 @@ namespace Caching
return null;
}
private static readonly Tuple<string, byte[]>[] fileTypes = new Tuple<string, byte[]>[]
{
new Tuple<string, byte[]>(".png", new byte[] { 0x89, 0x50, 0x4E, 0x47, 0xD, 0xA, 0x1A, 0xA }),
new Tuple<string, byte[]>(".jpg", new byte[] { 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, 0x4A, 0x46, 0x49, 0x46, 0 }),
new Tuple<string, byte[]>(".bmp", new byte[] { 0x42, 0x4D }),
new Tuple<string, byte[]>(".gif", new byte[] { 0x47, 0x49, 0x46 }),
new Tuple<string, byte[]>(".tif", new byte[] { 0x49, 0x49, 42, 0 }),
new Tuple<string, byte[]>(".tif", new byte[] { 0x4D, 0x4D, 0, 42 }),
new Tuple<string, byte[]>(".wdp", new byte[] { 0x49, 0x49, 0xBC }),
};
private static string GetFileExtension(byte[] buffer)
{
string extension = null;
var creationTime = DateTime.FromBinary(BitConverter.ToInt64(buffer, 0));
if (creationTime.Kind == DateTimeKind.Utc && creationTime <= DateTime.UtcNow)
var fileType = imageFileTypes.FirstOrDefault(t =>
{
Func<Tuple<string, byte[]>, bool> match =
t =>
int i = 0;
if (t.Item2.Length <= buffer.Length - 8)
{
while (i < t.Item2.Length && t.Item2[i] == buffer[i + 8])
{
int i = 0;
if (t.Item2.Length + 8 <= buffer.Length)
{
while (i < t.Item2.Length && t.Item2[i] == buffer[i + 8])
{
i++;
}
}
return i == t.Item2.Length;
};
i++;
}
}
extension = fileTypes.Where(match).Select(t => t.Item1).FirstOrDefault();
}
return i == t.Item2.Length;
});
return extension;
return fileType != null ? fileType.Item1 : ".bin";
}
}
}

4
Caching/ImageFileCache/Properties/AssemblyInfo.cs
View file

@ -8,8 +8,8 @@ using System.Runtime.InteropServices;
[assembly: AssemblyCompany("Clemens Fischer")]
[assembly: AssemblyCopyright("Copyright © Clemens Fischer 2012-2013")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyVersion("1.7.0")]
[assembly: AssemblyFileVersion("1.7.0")]
[assembly: AssemblyVersion("1.8.0")]
[assembly: AssemblyFileVersion("1.8.0")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCulture("")]
[assembly: ComVisible(false)]