protected override void OnBackColorChanged(EventArgs e)
{
DarkColor = ColorSettings.ChangeBrightness(-20, this.BackColor);
LightColor = ColorSettings.ChangeBrightness(-10, this.BackColor);
DarkPen = new Pen(new SolidBrush(DarkColor));
LightPen = new Pen(new SolidBrush(LightColor));
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
Pen pen = new Pen(new SolidBrush(TopColor), 1);
int height_Up = Depth - 1;
int height_Down = Height - Depth;
float opacityStep = 1f / depth;
for (int i = 0; i < Depth; i++)
{
// оба варианта хороши по своему
pen.Color = ColorSettings.ComputeOpacityColor(BackColor, TopColor, opacityStep * (i + 1));
pen.Color = ColorSettings.ChangeBrightness(-3 * i, TopColor);
e.Graphics.DrawLine(pen, 0, height_Up, Width, height_Up);
e.Graphics.DrawLine(pen, 0, height_Down, Width, height_Down);
height_Up--;
height_Down++;
}
}