private void DownloadImage(DownloadImage di)
{
try
{
if (!File.Exists(di.Filepath))
{
HttpWebRequest req = (HttpWebRequest) WebRequest.Create(di.Url);
req.UserAgent = "Mozilla";
req.Timeout = 10000;
WebResponse resp = req.GetResponse();
Stream stream = resp.GetResponseStream();
Image image = Image.FromStream(stream);
stream.Close();
try
{
image.Save(di.Filepath, System.Drawing.Imaging.ImageFormat.Png);
}
catch (Exception)
{
//log.Warn("SAVE: " + svx.Message);
}
resp.Close();
}
else
{
//log.Debug("someone already downloaded the tile ...");
}
}
catch (Exception )
{
//log.Warn("http connection " + ex.Message);
}
try
{
this.DownloadedTile( Thread.CurrentThread.ManagedThreadId );
}
catch (Exception)
{
//log.Warn("update tile event " + ex.Message);
}
}
private String GetFilePathAndCreateDir(DownloadImage di)
{
String xpath = Utils.GetXPath(di.X, di.Z, renderer);
if (!Directory.Exists(xpath))
{
Directory.CreateDirectory(xpath);
}
String savepath = Utils.GetYPath(xpath, di.Y);
return savepath;
}
/// <summary>
///
/// </summary>
protected void DownloadImages()
{
DownloadImage[,] mapimages = new DownloadImage[tileMatrixSize.X, tileMatrixSize.Y];
int nCountTiles = Calculator.GetCountTiles(zoom);
for (int i = xTileNumber; i <= xTileNumber + tileMatrixSize.X - 1; i++)
{
// correct tile number when Longitude around -180deg / 180deg
int xTile = i;
if (xTile < 0)
{
xTile = xTile + nCountTiles;
}
else if (xTile >= nCountTiles)
{
xTile = xTile - nCountTiles;
}
for (int j = yTileNumber; j <= yTileNumber + tileMatrixSize.Y - 1; j++)
{
DownloadImage di = new DownloadImage(this.GetTilesUrl(xTile, j, zoom), xTile, j, zoom );
try
{
mapimages[i - xTileNumber, j - yTileNumber] = di;
}
catch (System.IndexOutOfRangeException)
{
}
}
}
DateTime dt = DateTime.Now;
String zoompath = Utils.GetZoompath(this.zoom, renderer);
if (!Directory.Exists(zoompath)) {
Directory.CreateDirectory(zoompath);
}
List<DownloadImage> downloadlist = new List<DownloadImage>();
foreach (DownloadImage di in mapimages) {
try {
String savepath = this.GetFilePathAndCreateDir(di);
Boolean needDownload = true;
if (this.online) {
if (File.Exists(savepath)) {
needDownload = false;
TimeSpan test = dt - File.GetLastWriteTime(savepath);
if (test.TotalMinutes > this.cache_live) {
needDownload = true;
}
}
}
di.Filepath = savepath;
if (!needDownload)
{
this.DownloadedTile( Thread.CurrentThread.ManagedThreadId );
}
else
{
if ((di.X == xTileNumber + 2) && (di.Y == yTileNumber + 2))
downloadlist.Insert(0, di);
else
downloadlist.Add(di);
}
} catch (Exception ) {
}
}
try {
this.FinishedCache(this,null);
} catch (Exception ) {
}
foreach (DownloadImage di in downloadlist) {
this.DownloadImage(di);
}
}
