public void Render(Graphics g, RectangleF rectangle, PointF offset, IEnumerable <RTSelectionHighlight> highlights, bool unitsInMM)
{
List <Paragraph> rTParagraphs = this.RTParagraphs;
if (rTParagraphs != null && rTParagraphs.Count != 0)
{
using (RevertingDeviceContext revertingDeviceContext = new RevertingDeviceContext(g, this.Dpi))
{
Win32DCSafeHandle hdc = revertingDeviceContext.Hdc;
if (highlights != null)
{
RPLFormat.Directions direction = this.RTTextbox.TextBoxProps.Direction;
foreach (RTSelectionHighlight highlight in highlights)
{
if (!RichTextRenderer.HighlightStartLessThanOrEqualToEnd(highlight.SelectionStart, highlight.SelectionEnd))
{
TextBoxContext selectionStart = highlight.SelectionStart;
highlight.SelectionStart = highlight.SelectionEnd;
highlight.SelectionEnd = selectionStart;
}
TextRun textRun = default(TextRun);
CaretInfo caretInfo = this.MapLocation(hdc, highlight.SelectionStart, true, true, out textRun);
TextRun textRun2 = default(TextRun);
CaretInfo caretInfo2 = this.MapLocation(hdc, highlight.SelectionEnd, true, true, out textRun2);
if (caretInfo != null && caretInfo2 != null && textRun != null && textRun2 != null)
{
this.SetHighlighting(rTParagraphs, hdc, highlight, textRun, textRun2, caretInfo.Position.X, caretInfo2.Position.X);
}
}
}
Rectangle rectangle2 = (!unitsInMM) ? Rectangle.Round(rectangle) : new Rectangle(TextBox.ConvertToPixels(rectangle.X, this.m_dpi), TextBox.ConvertToPixels(rectangle.Y, this.m_dpi), TextBox.ConvertToPixels(rectangle.Width, this.m_dpi), TextBox.ConvertToPixels(rectangle.Height, this.m_dpi));
revertingDeviceContext.XForm.Transform(ref rectangle2);
Win32ObjectSafeHandle win32ObjectSafeHandle = Win32.CreateRectRgn(rectangle2.Left - 1, rectangle2.Top - 1, rectangle2.Right + 1, rectangle2.Bottom + 1);
if (!win32ObjectSafeHandle.IsInvalid)
{
try
{
if (Win32.SelectClipRgn(hdc, win32ObjectSafeHandle) == 0)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
finally
{
win32ObjectSafeHandle.Close();
}
}
TextBox.Render(this.RTTextbox, rTParagraphs, hdc, this.FontCache, offset, rectangle, this.m_dpi, unitsInMM);
if (Win32.SelectClipRgn(hdc, Win32ObjectSafeHandle.Zero) == 0)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
}
}
