protected override void OnPaint(PaintEventArgs e)
{
if (_croppingImage == null || _sourceImageArea.Width == 0)
{
return;
}
try
{
e.Graphics.FillRectangle(Brushes.Gray, ClientRectangle);
e.Graphics.DrawImage(
_croppingImage,
_sourceImageArea,
new Rectangle( // Source
0, 0,
_croppingImage.Width, _croppingImage.Height),
GraphicsUnit.Pixel);
using (Brush brush = new Pen(Color.FromArgb(150, Color.LightBlue)).Brush)
{
e.Graphics.FillRectangle(brush, _leftGrip.InnerEdge, _bottomGrip.InnerEdge,
_rightGrip.InnerEdge - _leftGrip.InnerEdge
/*this avoids overlapp which makes it twice as light*/
, Height - _bottomGrip.InnerEdge);
e.Graphics.FillRectangle(brush, _leftGrip.InnerEdge, 0, _rightGrip.InnerEdge - _leftGrip.InnerEdge,
_topGrip.InnerEdge);
e.Graphics.FillRectangle(brush, 0, 0, _leftGrip.InnerEdge, Height);
e.Graphics.FillRectangle(brush, _rightGrip.InnerEdge, 0, Width - _rightGrip.InnerEdge, Height);
}
e.Graphics.DrawRectangle(Pens.LightBlue, _leftGrip.Right, _topGrip.Bottom,
_rightGrip.Left - _leftGrip.Right, _bottomGrip.Top - _topGrip.Bottom);
_bottomGrip.Paint(e.Graphics);
_topGrip.Paint(e.Graphics);
_leftGrip.Paint(e.Graphics);
_rightGrip.Paint(e.Graphics);
}
catch (Exception error)
{
Debug.Fail(error.Message);
// UserControl does not have UseCompatibleTextRendering.
TextRenderer.DrawText(e.Graphics, "Error in OnPaint()", SystemFonts.DefaultFont, new Point(20, 20), Color.Red);
//swallow in release build
}
}
