/// <summary>
/// If scroll viewer is already scrolled all the way down, scroll to
/// bottom after printing new line of content.
/// Otherwise, if scroll viewer is scrolled up more than 1 pixel above
/// the bottom of the scrollable content, do not scroll.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
{
var offset = OutputScrollViewer.VerticalOffset;
if (offset == (OutputScrollViewer.ExtentHeight - OutputScrollViewer.ViewportHeight))
{
OutputScrollViewer.ScrollToBottom();
}
}
/// <summary>
/// If scroll viewer is already scrolled all the way down, scroll to
/// bottom after printing new line of content.
/// Otherwise, if scroll viewer is scrolled up more than 1 pixel above
/// the bottom of the scrollable content, do not scroll.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
{
bool scrollBarAtBottom = OutputScrollViewer.VerticalOffset == (OutputScrollViewer.ExtentHeight - OutputScrollViewer.ViewportHeight);
if (scrollBarAtBottom)
{
OutputScrollViewer.ScrollToBottom();
}
}
private void OutputStatusMessage(String msg)
{
var splits = msg.Split('\n');
foreach (var split in splits)
{
var trimmed = split.Trim('\r');
// Remember that SendStatusMessage is called from ReceiveMessage, which is assigned to a delegate of the example base class.
// Since the example base class is executed outside of the main thread i.e. RunAsync, you must check to make sure this thread
// has access to components of the application window i.e. OutputScrollViewer.
if (!Dispatcher.CheckAccess())
{
Dispatcher.Invoke(new SendStatusMessageDelegate(OutputStatusMessage), msg);
return;
}
OutputScrollViewer.Content += (trimmed + "\r\n");
OutputScrollViewer.ScrollToBottom();
}
}
public void WriteData(string data)
{
//Paragraph paragraph = new Paragraph();
//paragraph.Inlines.Add(data);
//OutputRichTextBox.Document.Blocks.Add(paragraph);
data = DateTime.Now.ToString("HH:mm:ss.ffffff") + data;
Debug.WriteLine($"DATA:[{data}]");
Dispatcher.InvokeAsync(() =>
{
Paragraph paragraph = new Paragraph();
// Parse color code
Brush currentColor = Brushes.LightGray;
string remaining = data;
while (true)
{
int startIndex = remaining.IndexOf("%", StringComparison.OrdinalIgnoreCase);
//Debug.WriteLine($"StartIndex:[{startIndex}]");
if (startIndex >= 0)
{
string preceding = remaining.Substring(0, startIndex);
remaining = remaining.Substring(startIndex + 1);
//Debug.WriteLine($"Preceding:[{preceding}]");
//Debug.WriteLine($"Remaining:[{remaining}]");
AddColoredTextToParagraph(paragraph, currentColor, preceding);
//Debug.WriteLine($"AddColoredTextToParagraph preceding:[{preceding}] {currentColor}");
int endIndex = remaining.IndexOf("%", StringComparison.OrdinalIgnoreCase);
//Debug.WriteLine($"EndIndex:[{endIndex}]");
if (endIndex == 1) // %c%
{
string colorCode = remaining.Substring(0, endIndex);
//Debug.WriteLine($"ColorCode:[{colorCode}]");
Brush newColor = GetColor(colorCode);
if (newColor != null)
{
currentColor = newColor;
remaining = remaining.Substring(endIndex + 1);
}
else
{
//Debug.WriteLine($"AddColoredTextToParagraph % not color:[%] {currentColor}");
AddColoredTextToParagraph(paragraph, currentColor, "%");
}
}
else
{
//Debug.WriteLine($"AddColoredTextToParagraph %:[%] {currentColor}");
AddColoredTextToParagraph(paragraph, currentColor, "%");
}
}
else
{
//Debug.WriteLine($"AddColoredTextToParagraph remaining:[{remaining}] {currentColor}");
AddColoredTextToParagraph(paragraph, currentColor, remaining);
break;
}
}
OutputRichTextBox.Document.Blocks.Add(paragraph);
OutputScrollViewer.ScrollToBottom();
});
}
private void ToggleButton_Click(object sender, RoutedEventArgs e)
{
OutputScrollViewer.ScrollToBottom();
}
