protected override void OnPaint(PaintEventArgs e)
{
if (DataReady)//(DataReady)
{
string errstring;
Graphics myGraphics = e.Graphics;
mygrapher = new Grapher(new GraphDimension(25, this.Size.Width - 25, 200, this.Size.Height - 100), "Position versus time", yvalue);
DataSeries series1 = new DataSeries(Data, "time", "position", Color.Red, 3.0f);
mygrapher.AddDataSeries(series1);
if ((errstring = mygrapher.PaintEvent(ref myGraphics, this.Font, yshift)) != "")
{
MessageBox.Show(errstring);
}
}
base.OnPaint(e);
}
private void DrawBackGround(ref Graphics graphics, Font f, DataSeries D, double shift)
{
int vertical_divisions = 10;
int horizontal_divisions = 8;
int Hpixelsperdivision = (GraphBottom - GraphTop - 50) / horizontal_divisions;
SolidBrush mybrush = new SolidBrush(Color.White);
graphics.FillRectangle(mybrush, GraphLeftSide, GraphTop, GraphRightSide - GraphLeftSide, GraphBottom - GraphTop);
mybrush.Dispose();
TextFormatFlags flags = TextFormatFlags.Bottom | TextFormatFlags.EndEllipsis;
TextRenderer.DrawText(graphics, GraphTitle, f,
new Rectangle(GraphLeftSide + 2, GraphTop + 2, GraphRightSide - GraphLeftSide, 15), SystemColors.ControlText, flags);
Pen myPen = new Pen(Color.Black, 1.0f);
graphics.DrawRectangle(myPen, GraphLeftSide, GraphTop, GraphRightSide - GraphLeftSide, GraphBottom - GraphTop);
graphics.DrawRectangle(myPen, GraphLeftSide + 25, GraphTop + 25, GraphRightSide - GraphLeftSide - 50, GraphBottom - GraphTop - 50);
//draw horizontal lines and labels
for (int i = 0; i <= horizontal_divisions; i++)
{
double maxVal = (double)(GraphBottom - GraphTop - 50) / PixelsPerUnit;
double horizontal_value = maxVal / (horizontal_divisions) * (horizontal_divisions - i) - shift;
string horizontal_value_str = horizontal_value.ToString();
int LineLeft = GraphLeftSide + 25;
int LineRight = GraphRightSide - 25;
int LineHeight = GraphTop + ((GraphBottom - GraphTop - 50) / horizontal_divisions) * i + 25;
graphics.DrawLine(myPen, LineLeft, LineHeight, LineRight, LineHeight);
TextRenderer.DrawText(graphics, horizontal_value_str, f,
new Rectangle(LineLeft - 25, LineHeight - 4, 50, 12), SystemColors.ControlText, flags);
}
for (int i = 0; i < vertical_divisions; i++)//draw vertical lines and labels
{
if (D.Xtype == Type.GetType("System.DateTime"))
{
double totalseconds = CastValue(D.Xmax, D.Xtype) - CastValue(D.Xmin, D.Xtype);
double secondsPerDiv = totalseconds / vertical_divisions;
DateTime minval = (DateTime)D.Xmin;
string vertical_value_str = String.Format("{0:HH}:{0:mm}:{0:ss}", minval.AddSeconds(secondsPerDiv * i));
int LineTop = GraphTop + 25;
int LineBottom = GraphBottom - 25;
int LinePos = GraphLeftSide + ((GraphRightSide - GraphLeftSide - 50) / (vertical_divisions)) * i + 25;
graphics.DrawLine(myPen, LinePos, LineTop, LinePos, LineBottom);
TextRenderer.DrawText(graphics, vertical_value_str, f,
new Rectangle(LinePos - 4, LineBottom + 10, 50, 12), SystemColors.ControlText, flags);
}
else if (D.Xtype == Type.GetType("System.Int32") || D.Xtype == Type.GetType("System.Int16") || D.Xtype == Type.GetType("System.Double"))
{
double maxVal = CastValue(D.Xmax, D.Xtype) - CastValue(D.Xmin, D.Xtype);
double vertical_value = maxVal / (vertical_divisions) * i;// -shift;
string vertical_value_str = vertical_value.ToString();
int LineTop = GraphTop + 25;
int LineBottom = GraphBottom - 25;
int LinePos = GraphLeftSide + ((GraphRightSide - GraphLeftSide - 50) / vertical_divisions) * i + 25;
graphics.DrawLine(myPen, LinePos, LineTop, LinePos, LineBottom);
TextRenderer.DrawText(graphics, vertical_value_str, f,
new Rectangle(LinePos - 4, LineBottom + 10, 50, 12), SystemColors.ControlText, flags);
}
}
myPen.Dispose();
mybrush.Dispose();
}
public void AddDataSeries(DataSeries dataseries)
{
if (dataseries.seriesRows[0].x != null)
{
DataSeriesCollection.Add(dataseries);
}
}