/// <summary>
/// On control paint
/// </summary>
protected override void OnPaint(PaintEventArgs e)
{
if (!Enabled || BackBuffer == null)
{
e.Graphics.FillRectangle(SystemBrushes.ControlDark, ClientRectangle);
return;
}
Rectangle src = new Rectangle(0, 0, BackBuffer.Width, BackBuffer.Height);
using (Bitmap image = BackBuffer.Clone(src, BackBuffer.PixelFormat))
{
Point srcPoint = GetTranslatePoint(Point.Empty);
Size size = UseCanvas && _canvas != Size.Empty ? _canvas : _image != null ? _image.Size : BackBuffer.Size;
AutoScrollMinSize = new Size(size.Width * _scale, size.Height * _scale);
e.Graphics.PixelOffsetMode = PixelOffsetMode.Half;
e.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
e.Graphics.ScaleTransform(_scale, _scale);
e.Graphics.DrawImage(image, ClientRectangle, srcPoint.X, srcPoint.Y, ClientSize.Width, ClientSize.Height, GraphicsUnit.Pixel);
e.Graphics.ResetTransform();
OnDrawAfterOnPaint(ref e);
}
}