HandleIncomingProgressRecord(Int64 sourceId, ProgressRecord record)
{
Util.Assert(record != null, "record should not be null");
if (_pendingProgress == null)
{
Util.Assert(_progPane == null, "If there is no data struct, there shouldn't be a pane, either.");
_pendingProgress = new PendingProgress();
}
_pendingProgress.Update(sourceId, record);
if (_progPane == null)
{
// This is the first time we've received a progress record.
// Create a progress pane,
// then show it,
// then create and start timer to update it.
_progPane = new ProgressPane(this);
// if (_progPaneUpdateTimer == null && _progPane != null)
// {
// _progPane.Show(_pendingProgress);
// _progPaneUpdateTimer = new Timer( new TimerCallback(ProgressPaneUpdateTimerElapsed), null, UpdateTimerThreshold, Timeout.Infinite);
// }
}
}
Show(PendingProgress pendingProgress)
{
Util.Assert(pendingProgress != null, "pendingProgress may not be null");
_bufSize = _rawui.BufferSize;
// In order to keep from slicing any CJK double-cell characters that might be present in the screen buffer,
// we use the full width of the buffer.
int maxWidth = _bufSize.Width;
int maxHeight = Math.Max(5, _rawui.WindowSize.Height / 3);
string[] contents = pendingProgress.Render(maxWidth, maxHeight, _rawui);
if (contents == null)
{
// There's nothing to show.
Hide();
_progressRegion = null;
return;
}
// NTRAID#Windows OS Bugs-1061752-2004/12/15-sburns should read a skin setting here...
BufferCell[,] newRegion = _rawui.NewBufferCellArray(contents, _ui.ProgressForegroundColor, _ui.ProgressBackgroundColor);
Util.Assert(newRegion != null, "NewBufferCellArray has failed!");
if (_progressRegion == null)
{
// we've never shown this pane before.
_progressRegion = newRegion;
Show();
}
else
{
// We have shown the pane before. We have to be smart about when we restore the saved region to minimize
// flicker. We need to decide if the new contents will change the dimensions of the progress pane
// currently being shown. If it will, then restore the saved region, and show the new one. Otherwise,
// just blast the new one on top of the last one shown.
// We're only checking size, not content, as we assume that the content will always change upon receipt
// of a new ProgressRecord. That's not guaranteed, of course, but it's a good bet. So checking content
// would usually result in detection of a change, so why bother?
bool sizeChanged =
(newRegion.GetLength(0) != _progressRegion.GetLength(0)) ||
(newRegion.GetLength(1) != _progressRegion.GetLength(1))
? true : false;
_progressRegion = newRegion;
if (sizeChanged)
{
if (IsShowing)
{
Hide();
}
Show();
}
else
{
_rawui.SetBufferContents(_location, _progressRegion);
}
}
}
