internal void Draw(Win32DCSafeHandle hdc, int lineThickness, uint rgbColor)
{
if (lineThickness < 1)
{
lineThickness = 1;
}
Win32.LOGBRUSH lplb = default(Win32.LOGBRUSH);
lplb.lbColor = rgbColor;
lplb.lbHatch = 0;
lplb.lbStyle = 0u;
Win32ObjectSafeHandle win32ObjectSafeHandle = Win32.ExtCreatePen(66048u, (uint)lineThickness, ref lplb, 0u, null);
Win32ObjectSafeHandle win32ObjectSafeHandle2 = Win32ObjectSafeHandle.Zero;
try
{
win32ObjectSafeHandle2 = Win32.SelectObject(hdc, win32ObjectSafeHandle);
Win32.MoveToEx(hdc, m_startPoint.X, m_startPoint.Y, IntPtr.Zero);
Win32.LineTo(hdc, m_endPoint.X, m_endPoint.Y);
}
finally
{
if (!win32ObjectSafeHandle2.IsInvalid)
{
Win32.SelectObject(hdc, win32ObjectSafeHandle2).SetHandleAsInvalid();
win32ObjectSafeHandle2.SetHandleAsInvalid();
}
if (!win32ObjectSafeHandle.IsInvalid)
{
win32ObjectSafeHandle.Close();
win32ObjectSafeHandle = null;
}
}
}
internal void Render(Graphics g, RectangleF rectangle, PointF offset, IEnumerable <RTSelectionHighlight> highlights, bool unitsInMM)
{
List <Paragraph> rTParagraphs = RTParagraphs;
if (rTParagraphs == null || rTParagraphs.Count == 0)
{
return;
}
using (RevertingDeviceContext revertingDeviceContext = new RevertingDeviceContext(g, Dpi))
{
Win32DCSafeHandle hdc = revertingDeviceContext.Hdc;
if (highlights != null)
{
_ = RTTextbox.TextBoxProps.Direction;
foreach (RTSelectionHighlight highlight in highlights)
{
if (!HighlightStartLessThanOrEqualToEnd(highlight.SelectionStart, highlight.SelectionEnd))
{
TextBoxContext selectionStart = highlight.SelectionStart;
highlight.SelectionStart = highlight.SelectionEnd;
highlight.SelectionEnd = selectionStart;
}
TextRun run;
CaretInfo caretInfo = MapLocation(hdc, highlight.SelectionStart, relativeToRun: true, moveCaretToNextLine: true, out run);
TextRun run2;
CaretInfo caretInfo2 = MapLocation(hdc, highlight.SelectionEnd, relativeToRun: true, moveCaretToNextLine: true, out run2);
if (caretInfo != null && caretInfo2 != null && run != null && run2 != null)
{
SetHighlighting(rTParagraphs, hdc, highlight, run, run2, caretInfo.Position.X, caretInfo2.Position.X);
}
}
}
Rectangle rect = (!unitsInMM) ? Rectangle.Round(rectangle) : new Rectangle(TextBox.ConvertToPixels(rectangle.X, m_dpi), TextBox.ConvertToPixels(rectangle.Y, m_dpi), TextBox.ConvertToPixels(rectangle.Width, m_dpi), TextBox.ConvertToPixels(rectangle.Height, m_dpi));
revertingDeviceContext.XForm.Transform(ref rect);
Win32ObjectSafeHandle win32ObjectSafeHandle = Win32.CreateRectRgn(rect.Left - 1, rect.Top - 1, rect.Right + 1, rect.Bottom + 1);
if (!win32ObjectSafeHandle.IsInvalid)
{
try
{
if (Win32.SelectClipRgn(hdc, win32ObjectSafeHandle) == 0)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
finally
{
win32ObjectSafeHandle.Close();
}
}
TextBox.Render(RTTextbox, rTParagraphs, hdc, FontCache, offset, rectangle, m_dpi, unitsInMM);
if (Win32.SelectClipRgn(hdc, Win32ObjectSafeHandle.Zero) == 0)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
}
private void Dispose(bool disposing)
{
if (disposing && m_font != null)
{
m_font.Dispose();
m_font = null;
}
if (m_hfont != null && !m_hfont.IsInvalid)
{
m_hfont.Close();
m_hfont = null;
}
ScriptCache.Close();
}
