public void HandleBinaryStateChangeNotification(BinaryStateChangeNotification bscn)
{
if (BinaryDataChanged != null)
{
BinaryDataChanged(bscn);
}
}
private void VariableTable_BinaryDataChanged(BinaryStateChangeNotification bscn)
{
if (bscn.State != _imageState.DataName)
{
return;
}
// if we get here, we are interested in the message
if (bscn.HasBinaryData())
{
// we need to try to create an image from the binary data
try
{
if (ImageSmartCIO.IsTypeSupported(bscn.ContentType))
{
_imageDrawer.Image = new Bitmap(bscn.BinaryData);
}
}
catch (Exception)
{
Globals.GetFrame(_imageState.Appliance)
.AddLogLine("Couldn't process binary image file for " + _imageState.DataName + ".");
}
}
else
{
// send a state-value-request to get the new binary value
// if supported, send the height and width that we desire
try
{
StateValueRequest svrqst = new StateValueRequest(_imageState.DataName);
if (((BinarySpace)_imageState.Type.ValueSpace)[SCALABLE_IMAGE_OPT] != null)
{
svrqst[StateValueRequest.DESIRED_WIDTH_OPT] = _imageDrawer.Width.ToString();
svrqst[StateValueRequest.DESIRED_HEIGHT_OPT] = _imageDrawer.Height.ToString();
}
if (ImageSmartCIO.IsTypeSupported(bscn.ContentType))
{
_imageState.Appliance.GetConnection().Send(svrqst);
_imageDrawer.Image = ThumbnailViewer.NO_IMAGE;
}
}
catch (Exception)
{
}
}
}
private void VariableTable_BinaryDataChanged(BinaryStateChangeNotification bscn)
{
int imageIndex = -1;
// TODO: Determine if this a message for the image state we're interested in,
// and get the index within the list for later
try
{
string state = bscn.State;
if (!state.EndsWith(_imageState.DataWindow))
{
return;
}
// -2 to remove separator char and ']'
state = state.Substring(0, state.Length - _imageState.DataWindow.Length - 2);
int startIdx = state.LastIndexOf("[");
if (startIdx < 0)
{
return;
}
// + 1 to remove '['
state = state.Substring(startIdx + 1);
// -1 because list indices are 1-indexed
imageIndex = Int32.Parse(state) - 1;
}
catch (Exception)
{
return;
}
// if we get here, we are interested in the message
if (bscn.HasBinaryData())
{
// we need to try to create an image from the binary data
try
{
System.Drawing.Image img = null;
if (ImageSmartCIO.IsTypeSupported(bscn.ContentType))
{
img = new Bitmap(bscn.BinaryData);
}
if (((BinarySpace)_imageState.Type.ValueSpace)[ImageSmartCIO.SCALABLE_IMAGE_OPT] != null &&
((ThumbnailViewer)_control)[imageIndex] != ThumbnailViewer.NO_IMAGE &&
(img.Width > ThumbnailViewer.THUMBNAIL_WIDTH ||
img.Height > ThumbnailViewer.THUMBNAIL_HEIGHT))
{
return;
}
((ThumbnailViewer)_control)[imageIndex] = img;
}
catch (Exception)
{
Globals.GetFrame(_imageState.Appliance)
.AddLogLine("Couldn't process binary image file for " + bscn.State + ".");
}
}
else
{
// send a state-value-request to get the new binary value
// if supported, send the height and width that we desire
try
{
((ThumbnailViewer)_control)[imageIndex] = null;
StateValueRequest svrqst = new StateValueRequest(bscn.State);
if (((BinarySpace)_imageState.Type.ValueSpace)[ImageSmartCIO.SCALABLE_IMAGE_OPT] != null)
{
svrqst[StateValueRequest.DESIRED_WIDTH_OPT] = ThumbnailViewer.THUMBNAIL_WIDTH.ToString();
svrqst[StateValueRequest.DESIRED_HEIGHT_OPT] = ThumbnailViewer.THUMBNAIL_HEIGHT.ToString();
}
if (ImageSmartCIO.IsTypeSupported(bscn.ContentType))
{
_imageState.Appliance.GetConnection().Send(svrqst);
}
}
catch (Exception)
{
}
}
}
