void Mouse_MouseMove(InputEventArgs e)
{
Color clr;
Point pt = new Point(e.MousePosition.X - imageLocation.X,
e.MousePosition.Y - imageLocation.Y);
if (buffer.IsPointValid(pt) == false)
{
frm.lblPixelColor.Text = "No Pixel";
return;
}
if (Mouse.Buttons[Mouse.MouseButtons.Primary])
{
// do a circle of radius 3
for (int y = -3; y <= 3; y++)
{
for (int x = -3; x <= 3; x++)
{
// if we're out of the circle radius, go to the next iteration.
if (x * x + y * y > 9)
{
continue;
}
Point newpt = new Point(pt.X + x, pt.Y + y);
if (newpt.X < 0 || newpt.X >= buffer.Width)
{
continue;
}
if (newpt.Y < 0 || newpt.Y >= buffer.Height)
{
continue;
}
buffer.SetPixel(newpt.X, newpt.Y, Color.FromArgb(frm.btnColor.BackColor.ToArgb()));
}
}
image.WritePixels(buffer);
}
clr = buffer.GetPixel(e.MousePosition.X - imageLocation.X,
e.MousePosition.Y - imageLocation.Y);
frm.lblPixelColor.Text =
string.Format("R: {0} G: {1}\r\nB: {2} A: {3}",
FormatComponent(clr.R), FormatComponent(clr.G),
FormatComponent(clr.B), FormatComponent(clr.A));
}