protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
lock (lockObject)
{
using (GraphicsPath path = new GraphicsPath())
using (GraphicsPath path2 = new GraphicsPath())
using (Pen pathPen = new Pen(ForeColor, 3))
using (Pen pathPen2 = new Pen(Color.FromArgb(150, ForeColor), 3))
using (Brush brush = new SolidBrush(Color.FromArgb(130, ForeColor2)))
{
int lineNum = 0;
float xOffset = ClientRectangle.Width;
float stepLength = ClientRectangle.Width / 2f / (float)(chunkSize - 1);
for (int index = values.Count - 2; index > -1; index -= 1)
{
lineNum++;
float yScale1 = values[index + 1] / (float)YScale;
float yScale2 = values[index] / (float)YScale;
float y1 = ClientRectangle.Height - (ClientRectangle.Height * yScale1);
float y2 = ClientRectangle.Height - (ClientRectangle.Height * yScale2);
path.AddLine(xOffset, y1, xOffset -= stepLength, y2);
if (lineNum == chunkSize)
{
break;
}
}
lineNum = 0;
xOffset = ClientRectangle.Width / 2f;
for (int index = values2.Count - 2; index > -1; index -= 1)
{
lineNum++;
float yScale1 = values2[index + 1] / (float)YScale;
float yScale2 = values2[index] / (float)YScale;
float y1 = ClientRectangle.Height - (ClientRectangle.Height * yScale1);
float y2 = ClientRectangle.Height - (ClientRectangle.Height * yScale2);
path2.AddLine(xOffset, y1, xOffset -= stepLength, y2);
if (lineNum == chunkSize)
{
break;
}
}
e.Graphics.DrawLine(Pens.Blue, ClientRectangle.Width / 2f, 0, ClientRectangle.Width / 2f, ClientRectangle.Bottom);
SmoothingMode oldMode = e.Graphics.SmoothingMode;
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
e.Graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
if (showValue)
{
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
stringFormat.FormatFlags = StringFormatFlags.NoWrap;
string textualValue = values.LastOrDefault().ToString();
int fontSize = TextUtils.GetFontSize(e.Graphics, textualValue, Font, ClientRectangle.Size);
e.Graphics.DrawString(textualValue, new Font(Font.FontFamily, fontSize), brush, ClientRectangle, stringFormat);
}
e.Graphics.DrawPath(pathPen, path);
e.Graphics.DrawPath(pathPen2, path2);
e.Graphics.SmoothingMode = oldMode;
}
ControlPaint.DrawBorder(e.Graphics, ClientRectangle, Color.DarkGray, ButtonBorderStyle.Solid);
}
}