public static void ScrollToAvalonEdit(this ScrollViewer scrollViewer, TextArea textArea, int line, int column)
{
scrollViewer.ScrollToAvalonEdit(textArea, line, column, VisualYPosition.LineMiddle, (scrollViewer != null) ? (scrollViewer.ViewportHeight / 2.0) : 0.0, 0.3);
}
public static void ScrollToAvalonEdit(this ScrollViewer scrollViewer, TextArea textArea, int line, int column, VisualYPosition yPositionMode, double referencedVerticalViewPortOffset, double minimumScrollFraction)
{
TextView textView = textArea.TextView;
TextDocument document = textView.Document;
if (scrollViewer == null || document == null)
{
return;
}
if (line < 1)
{
line = 1;
}
if (line > document.LineCount)
{
line = document.LineCount;
}
if (!((System.Windows.Controls.Primitives.IScrollInfo)textView).CanHorizontallyScroll)
{
VisualLine orConstructVisualLine = textView.GetOrConstructVisualLine(document.GetLineByNumber(line));
for (double num = referencedVerticalViewPortOffset; num > 0.0; num -= orConstructVisualLine.Height)
{
DocumentLine previousLine = orConstructVisualLine.FirstDocumentLine.PreviousLine;
if (previousLine == null)
{
break;
}
orConstructVisualLine = textView.GetOrConstructVisualLine(previousLine);
}
}
Point visualPosition = textArea.TextView.GetVisualPosition(new TextViewPosition(line, Math.Max(1, column)), yPositionMode);
double num2 = visualPosition.Y - referencedVerticalViewPortOffset;
if (Math.Abs(num2 - scrollViewer.VerticalOffset) > minimumScrollFraction * scrollViewer.ViewportHeight)
{
scrollViewer.AnimateScroll(Math.Max(0.0, num2));
}
if (column <= 0)
{
return;
}
if (visualPosition.X > scrollViewer.ViewportWidth - 60.0)
{
double num3 = Math.Max(0.0, visualPosition.X - scrollViewer.ViewportWidth / 2.0);
if (Math.Abs(num3 - scrollViewer.HorizontalOffset) > minimumScrollFraction * scrollViewer.ViewportWidth)
{
scrollViewer.ScrollToHorizontalOffset(num3);
}
}
else
{
scrollViewer.AnimateScroll(0.0);
}
}
public static void ScrollToAvalonEdit(this ScrollViewer scrollViewer, TextArea textArea, int line)
{
scrollViewer.ScrollToAvalonEdit(textArea, line, -1);
}
