public static Backdrop getBackdrop(Tile tile, string baseName)
{
string imageFileName = Path.Combine(m_mapsPath, baseName + imageExt);
Backdrop ret = null;
try
{
if (m_backdropCache.ContainsKey(baseName))
{
ret = (Backdrop)m_backdropCache[baseName]; // may be IsEmpty, if proven that can't download
ret.MarkUsed();
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getBackdrop() - tile '" + baseName + "' - found in cache - " + ret);
#endif
return(ret);
}
bool loadedFromFile = false;
if (!Project.reloadRefresh && File.Exists(imageFileName))
{
try
{
ret = new Backdrop(imageFileName, baseName, true);
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getBackdrop() - tile '" + baseName + "' - loaded from file");
#endif
AddBackdrop(baseName, ret);
loadedFromFile = true;
}
catch {}
}
if (!loadedFromFile && m_mappingServers.Count > 0)
{
string imageUrl = getFileUrl(tile, baseName, imageFileName);
if (imageUrl == null)
{
ret = new Backdrop(null, baseName, true); // doFill with null name makes it Empty
AddBackdrop(baseName, ret);
return(ret);
}
if (!m_backdropCache.ContainsKey(baseName))
{
ret = new Backdrop(imageFileName, baseName, false); // fill later
AddBackdrop(baseName, ret);
DownloadThread dt = new DownloadThread();
dt.DownloadUrl = imageUrl;
dt.tile = tile;
dt.baseName = baseName;
dt.fileName = imageFileName;
dt.CompleteCallback += new DownloadCompleteHandler(imageDownloadCompleteCallback);
dt.ProgressCallback += new DownloadProgressHandler(imageDownloadProgressCallback);
dt.addMonitoredMethod = new AddMonitoredMethod(ProgressMonitor.addMonitored);
//add dt worker method to the thread pool / queue a task
//Project.threadPool.PostRequest (new WorkRequestDelegate (dt.Download));
ThreadPool2.QueueUserWorkItem(new WaitCallback(dt.Download), baseName);
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getBackdrop() - tile '" + baseName + "' - loading remote from " + imageUrl);
#endif
}
#if DEBUG
else
{
LibSys.StatusBar.Trace("OK: TileCache:getBackdrop() - tile '" + baseName + "' - already in cache");
}
#endif
}
}
catch (Exception e)
{
LibSys.StatusBar.Error("file '" + imageFileName + "' failed to load: " + e.Message);
}
// whatever happened before, returning null is not an option.
if (ret == null)
{
ret = new Backdrop(null, baseName, true); // doFill with null name makes it Empty
AddBackdrop(baseName, ret);
}
return(ret);
}
public static Features getFeatures(Tile tile, string baseName)
{
string featuresFileName = Path.Combine(m_mapsPath, baseName + featuresExt);
Features ret = null;
try
{
if (m_featuresCache.ContainsKey(baseName))
{
ret = (Features)m_featuresCache[baseName]; // may be still downloading
if (ret != null)
{
ret.MarkUsed();
}
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getFeatures() - tile '" + baseName + "' - found in cache - " + ret);
#endif
return(ret);
}
bool loadedFromFile = false;
if (!Project.reloadRefresh && File.Exists(featuresFileName))
{
try
{
ret = new Features(featuresFileName, baseName, true);
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getFeatures() - tile '" + baseName + "' - loaded local");
#endif
AddFeatures(baseName, ret);
loadedFromFile = true;
}
catch {}
}
if (!loadedFromFile && m_mappingServers.Count > 0)
{
string featuresUrl = getFileUrl(tile, baseName, featuresFileName);
if (featuresUrl == null)
{
ret = new Features(null, baseName, true); // doFill with null name makes it Empty
AddFeatures(baseName, ret);
return(ret);
}
if (!m_featuresCache.ContainsKey(baseName))
{
ret = new Features(featuresFileName, baseName, false); // fill later
AddFeatures(baseName, ret);
DownloadThread dt = new DownloadThread();
dt.DownloadUrl = featuresUrl;
dt.tile = tile;
dt.baseName = baseName;
dt.fileName = featuresFileName;
dt.CompleteCallback += new DownloadCompleteHandler(featuresDownloadCompleteCallback);
dt.ProgressCallback += new DownloadProgressHandler(featuresDownloadProgressCallback);
dt.addMonitoredMethod = new AddMonitoredMethod(ProgressMonitor.addMonitored);
//add this to the thread pool / queue a task
//Project.threadPool.PostRequest (new WorkRequestDelegate (dt.Download));
ThreadPool2.QueueUserWorkItem(new WaitCallback(dt.Download), baseName);
#if DEBUG
LibSys.StatusBar.Trace("OK: TileCache:getFeatures() - tile '" + baseName + "' - loading remote from " + featuresUrl);
#endif
}
}
}
catch (Exception e)
{
LibSys.StatusBar.Error("file '" + featuresFileName + "' failed to load: " + e.Message);
}
// whatever happened before, returning null is not an option.
if (ret == null)
{
ret = new Features(null, baseName, true); // doFill with null name makes it Empty
AddFeatures(baseName, ret);
}
return(ret);
}
