private void SetRenderImageState()
{
if (this.renderImageState == renderResource.State)
{
return;
}
RenderImageState oldRenderImageState = this.renderImageState;
this.renderImageState = renderResource.State;
if (oldRenderImageState != RenderImageState.Idle && oldRenderImageState != RenderImageState.DownloadProgress || renderImageState == RenderImageState.Idle)
{
throw new Granular.Exception("Can't change BitmapSource.RenderImageState from \"{0}\" to \"{1}\"", oldRenderImageState, renderImageState);
}
switch (renderImageState)
{
case RenderImageState.DownloadProgress:
IsDownloading = true;
DownloadProgress.Raise(this);
break;
case RenderImageState.DownloadCompleted:
IsDownloading = false;
DownloadCompleted.Raise(this);
break;
case RenderImageState.DownloadFailed:
IsDownloading = false;
DownloadFailed.Raise(this);
break;
default: throw new Granular.Exception("Unexpected DownloadState \"{0}\"", renderImageState);
}
}
