private void CreateTileLoadWorker()
{
_canvas.OnEnvelopeChanged += _canvasEnvelopeChanged;
_asyncRefreshCanvas = new AsyncRefreshCanvasHandler(TryRefreshCanvas);
_loadWorker = new BackgroundWorker();
_loadWorker.DoWork += new DoWorkEventHandler(_loadWorker_DoWork);
_loadWorker.WorkerSupportsCancellation = true;
_loadWorker.WorkerReportsProgress = true;
_loadWorker.ProgressChanged += new ProgressChangedEventHandler(_loadWorker_ProgressChanged);
}
public void Dispose()
{
_disposed = true;
//clear load queue for thread exit
_loadStack.Clear();
while (!_loadWorkerIsCompleted && _loadWorkerIsStarted)
{
Thread.Sleep(10);
}
_loadWorker.Dispose();
//
if (_loadWorker != null)
{
_loadWorker.Dispose();
_loadWorker = null;
}
if (_tilesLocator != null)
{
_tilesLocator.Dispose();
_tilesLocator = null;
}
if (_tileCacheManager != null)
{
_tileCacheManager.Dispose();
_tileCacheManager = null;
}
if (_sleepTileCacheManager != null)
{
_sleepTileCacheManager.Dispose();
_sleepTileCacheManager = null;
}
if (_dataProviderReader != null)
{
_dataProviderReader.Dispose();
_dataProviderReader = null;
}
_dataProvider = null;
_asyncRefreshCanvas = null;
_canvas.OnEnvelopeChanged -= _canvasEnvelopeChanged;
_canvas = null;
}
