public void OnTimer(object sender, EventArgs args)
{
if (Interlocked.Exchange(ref _pendingModificationsCount, value: 0) > 0)
{
try
{
PartTextCanvas.DetermineVerticalOffset();
PartTextCanvas.CurrentlyVisibleSection = CalculateVisibleSection();
UpdateScrollViewerRegions();
ScrollToBottomIfRequired();
PartTextCanvas.UpdateVisibleLines();
PartTextCanvas.OnMouseMove();
}
catch (Exception e)
{
Log.ErrorFormat("Caught unexpected exception while updating: {0}", e);
// Common sense says that functions which fail once work when tried again.
// The same goes for this control: If drawing fails then it's conceivable
// that it will work when we try again in a few milliseconds...
Interlocked.Increment(ref _pendingModificationsCount);
}
}
}
private void OnLogFileChanged(ILogSource oldValue, ILogSource newValue)
{
oldValue?.RemoveListener(this);
PartTextCanvas.LogSource = newValue;
if (newValue != null)
{
newValue.AddListener(this, TimeSpan.FromMilliseconds(value: 100), maximumLineCount: 10000);
_maxLineWidth = (int)Math.Ceiling(_textSettings.EstimateWidthUpperLimit(newValue.GetProperty(TextProperties.MaxCharactersInLine)));
UpdateScrollViewerRegions();
PartTextCanvas.DetermineVerticalOffset();
PartTextCanvas.UpdateVisibleSection();
PartTextCanvas.UpdateVisibleLines();
}
else
{
_maxLineWidth = 0;
TextCanvasOnVisibleLinesChanged();
UpdateScrollViewerRegions();
}
MatchScrollbarValueToCurrentLine();
}
private void ChangeTextSettings(TextSettings textSettings, TextBrushes textBrushes)
{
_textSettings = textSettings;
_textBrushes = textBrushes;
_verticalScrollBar.SetValue(RangeBase.SmallChangeProperty, _textSettings.LineHeight);
_verticalScrollBar.SetValue(RangeBase.LargeChangeProperty, 10 * _textSettings.LineHeight);
_horizontalScrollBar.SetValue(RangeBase.SmallChangeProperty, _textSettings.LineHeight);
_horizontalScrollBar.SetValue(RangeBase.LargeChangeProperty, 10 * _textSettings.LineHeight);
foreach (var columnPresenter in _columnPresenters.Values)
{
columnPresenter.TextSettings = _textSettings;
}
PartTextCanvas.ChangeTextSettings(_textSettings, _textBrushes);
if (LogSource != null)
{
TextCanvasOnVisibleLinesChanged();
}
}
public void CopySelectedLinesToClipboard()
{
PartTextCanvas.OnCopyToClipboard();
}
public void Select(params LogLineIndex[] indices)
{
PartTextCanvas.SetSelected(indices, SelectMode.Replace);
}
public void Select(IEnumerable <LogLineIndex> indices)
{
PartTextCanvas.SetSelected(indices, SelectMode.Replace);
}
public void Select(LogLineIndex index)
{
PartTextCanvas.SetSelected(index, SelectMode.Replace);
}
public LogFileSection CalculateVisibleSection()
{
return(PartTextCanvas.CalculateVisibleSection());
}
