public TileGridControl(Object target, int width, int height, Texture2D backgroundTexture, GetTileData getTileDataFunc, SetTileData setTileDataFunc)
{
m_target = target;
m_width = width;
m_height = height;
m_backgroundTexture = backgroundTexture;
m_getTileDataFunc = getTileDataFunc;
m_setTileDataFunc = setTileDataFunc;
}
void CleanupTileData(GetTileData data)
{
using (data)
{
if (TileCache != null)
{
TileCache[data.Key] = InvalidTile;
//TileCache.Remove(data.Key);
}
}
}
void GetTile(GetTileData data)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(GetUriForKey(data.Key));
request.Timeout = 15000;
request.Method = "GET";
request.UserAgent = "Windows-RSS-Platform/1.0 (MSIE 7.0; Windows NT 5.1)";
data.Request = request;
request.BeginGetResponse(new AsyncCallback(GetResponseCallback), data);
}
catch (Exception e)
{
CleanupTileData(data);
}
}
void GetResponseCallback(IAsyncResult result)
{
GetTileData data = (GetTileData)result.AsyncState;
try
{
data.Response = data.Request.EndGetResponse(result) as HttpWebResponse;
data.MemoryStream = new MemoryStream();
data.ResponseStream = data.Response.GetResponseStream();
data.Buffer = new byte[1 << 16];
data.ResponseStream.BeginRead(data.Buffer, 0, data.Buffer.Length, new AsyncCallback(ReadCallback), data);
}
catch (Exception e)
{
CleanupTileData(data);
}
}
void ReadCallback(IAsyncResult result)
{
GetTileData data = (GetTileData)result.AsyncState;
try
{
int read = data.ResponseStream.EndRead(result);
if (read > 0)
{
data.MemoryStream.Write(data.Buffer, 0, read);
data.ResponseStream.BeginRead(data.Buffer, 0, data.Buffer.Length, new AsyncCallback(ReadCallback), data);
}
else
{
using (data)
{
string tilePath = GetTilePathForKey(data.Key);
using (FileStream file = new FileStream(tilePath, FileMode.Create, FileAccess.Write))
{
file.Write(data.MemoryStream.GetBuffer(), 0, (int)data.MemoryStream.Length);
}
data.MemoryStream.Seek(0, SeekOrigin.Begin);
IMapDrawable pbitmap = data.Renderer.GetBitmapFromStream(this, data.MemoryStream);
if (pbitmap == null)
{
throw new Exception();
}
TileCache[data.Key] = new TileData(pbitmap);
data.Callback(data.State);
}
}
}
catch (Exception e)
{
CleanupTileData(data);
}
}
public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
TileData tileData = null;
// try to get the tile
if (TileCache.TryGetValue(key, out tileData))
return tileData;
// check if it is in the file cache
string tilePath = GetTilePathForKey(key);
if (File.Exists(tilePath))
{
FileInfo finfo = new FileInfo(tilePath);
if (DateTime.Now - finfo.CreationTime > new TimeSpan(2, 0, 0, 0))
{
// tile is old, expire it
File.Delete(tilePath);
}
else
{
try
{
using (FileStream fstream = new FileStream(tilePath, FileMode.Open))
{
IMapDrawable bitmap = renderer.GetBitmapFromStream(this, fstream);
return TileCache[key] = new TileData(bitmap);
}
}
catch (Exception)
{
File.Delete(tilePath);
}
}
}
// check if its a bad key
Uri uri = GetUriForKey(key);
if (uri != null)
{
// mark tile as being downloaded
TileCache[key] = null;
GetTileData data = new GetTileData();
data.Renderer = renderer;
data.Key = key;
data.Callback = callback;
data.State = state;
data.Uri = uri;
//ThreadPool.QueueUserWorkItem(new WaitCallback(GetTile), data);
GetTile(data);
}
return tileData;
}
void GetTile(GetTileData data)
{
try
{
HttpWebRequest request = WebRequestFactory.CreateHttpRequest(GetUriForKey(data.Key));
request.Timeout = 15000;
request.Method = "GET";
request.UserAgent = "Windows-RSS-Platform/1.0 (MSIE 7.0; Windows NT 5.1)";
data.Request = request;
request.BeginGetResponse(new AsyncCallback(GetResponseCallback), data);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
CleanupTileData(data);
}
}
void CleanupTileData(GetTileData data)
{
using (data)
{
if (TileCache != null)
{
TileCache.Remove(data.Key);
}
}
}
public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
TileData tileData = null;
// try to get the tile
if (TileCache.TryGetValue(key, out tileData))
{
if (tileData != InvalidTile)
{
return(tileData);
}
TileCache.Remove(key);
}
// check if it is in the file cache
string tilePath = GetTilePathForKey(key);
if (File.Exists(tilePath))
{
FileInfo finfo = new FileInfo(tilePath);
if (DateTime.Now - finfo.CreationTime > new TimeSpan(2, 0, 0, 0))
{
// tile is old, expire it
File.Delete(tilePath);
}
else
{
TileCache[key] = null;
ThreadPool.QueueUserWorkItem((o) =>
{
try
{
using (FileStream fstream = new FileStream(tilePath, FileMode.Open))
{
IMapDrawable bitmap = renderer.GetBitmapFromStream(this, fstream);
TileCache[key] = new TileData(bitmap);
if (callback != null)
{
callback(state);
}
}
}
catch (Exception)
{
File.Delete(tilePath);
}
});
return(null);
}
}
// check if its a bad key
Uri uri = GetUriForKey(key);
if (uri != null)
{
// mark tile as being downloaded
TileCache[key] = null;
GetTileData data = new GetTileData();
data.Renderer = renderer;
data.Key = key;
data.Callback = callback;
data.State = state;
data.Uri = uri;
ThreadPool.QueueUserWorkItem(new WaitCallback(GetTile), data);
//GetTile(data);
}
return(tileData);
}
void GetTile(object o)
{
using (GetTileData data = (GetTileData)o)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(data.Uri);
request.Timeout = 15000;
request.Method = "GET";
request.UserAgent = "Windows-RSS-Platform/1.0 (MSIE 7.0; Windows NT 5.1)";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode != HttpStatusCode.OK)
{
throw new Exception("Error while downloading tile.");
}
if (TileCache != null)
{
using (Stream s = response.GetResponseStream())
{
using (MemoryStream mem = new MemoryStream())
{
int read = 0;
byte[] buffer = new byte[10000];
do
{
read = s.Read(buffer, 0, buffer.Length);
mem.Write(buffer, 0, read);
}while (read != 0);
mem.Seek(0, SeekOrigin.Begin);
string tilePath = GetTilePathForKey(data.Key);
using (FileStream file = new FileStream(tilePath, FileMode.Create, FileAccess.Write))
{
file.Write(mem.GetBuffer(), 0, (int)mem.Length);
}
IMapDrawable pbitmap = data.Renderer.GetBitmapFromStream(this, mem);
if (pbitmap == null)
{
throw new Exception();
}
TileCache[data.Key] = new TileData(pbitmap);
}
}
if (data.Callback != null)
{
data.Callback(data.State);
}
}
}
}
catch (Exception e)
{
if (TileCache != null)
{
//TileCache.Remove(data.Key);
TileCache[data.Key] = InvalidTile;
}
}
}
}
