/// <summary>
/// Chart post paint event handler.
/// Used to draw the "connection" lines between the original and supplemental pies.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">Event arguments.</param>
private void chart_PostPaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (sender is ChartArea)
{
ChartArea area = (ChartArea)sender;
if (this.supplementalChartArea != null &&
area.Name == this.supplementalChartArea.Name)
{
// Get position of the plotting areas in pixels
RectangleF originalPosition = GetChartAreaPlottingPosition(this.originalChartArea, e.ChartGraphics);
RectangleF supplementalPosition = GetChartAreaPlottingPosition(this.supplementalChartArea, e.ChartGraphics);
// Get coordinates of the "connection" lines
PointF p1 = GetRotatedPlotAreaPoint(supplementalPosition, 325f);
PointF p2 = GetRotatedPlotAreaPoint(supplementalPosition, 215f);
PointF p3 = GetRotatedPlotAreaPoint(originalPosition, 90f - this.collectedPieSliceAngle / 2f);
PointF p4 = GetRotatedPlotAreaPoint(originalPosition, 90f + this.collectedPieSliceAngle / 2f);
// Draw "connection lines"
using (Pen pen = new Pen(this.ConnectionLinesColor, 1))
{
e.ChartGraphics.Graphics.DrawLine(pen, p1, p3);
e.ChartGraphics.Graphics.DrawLine(pen, p2, p4);
}
}
}
}
private void Chart1_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is Chart)
{
// Creare mini-chart inside each series
if (Series2.SelectedItem.Value != "None")
{
// Position new chart areas with mini-chart over the data points
PositionChartAreas(Chart1, Chart1.Series["Default"]);
}
}
}
protected void Chart1_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
// foreach (Series charts in Chart1.Series)
// {
// foreach (DataPoint point in charts.Points)
// {
// point.Label = string.Format("{1}-{0:0} ",point.AxisLabel, point.YValues[0]);
// }
// }
}
/// <summary>
/// Chart Paint event handler.
/// </summary>
private void Chart_PostPaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is ChartArea)
{
ChartArea area = (ChartArea)e.ChartElement;
// call the paint method.
if (ChartAreas.IndexOf(area.Name) >= 0 && enabled)
{
PaintDataTable(sender, e);
}
}
}
private void Chart1_PostPaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is ChartArea)
{
ChartArea area = (ChartArea)e.ChartElement;
if (area.Name == "Default")
{
// If Connection line is not checked return
if (!ConnectionLine.Checked)
{
return;
}
double max;
double min;
double xMax;
double xMin;
// Find Minimum and Maximum values
FindMaxMin(out max, out min, out xMax, out xMin);
// Take Graphics object from chart
Graphics graph = e.ChartGraphics.Graphics;
// Convert X and Y values to screen position
float pixelYMax = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.Y, max);
float pixelXMax = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, xMax);
float pixelYMin = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.Y, min);
float pixelXMin = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, xMin);
PointF point1 = PointF.Empty;
PointF point2 = PointF.Empty;
// Set Maximum and minimum points
point1.X = pixelXMax;
point1.Y = pixelYMax;
point2.X = pixelXMin;
point2.Y = pixelYMin;
// Convert relative coordinates to absolute coordinates.
point1 = e.ChartGraphics.GetAbsolutePoint(point1);
point2 = e.ChartGraphics.GetAbsolutePoint(point2);
// Draw connection line
graph.DrawLine(new Pen(Color.FromArgb(26, 59, 105), 2), point1, point2);
}
}
}
protected void Chart3_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is System.Web.UI.DataVisualization.Charting.Series && ((System.Web.UI.DataVisualization.Charting.Series)e.ChartElement).Name == "Series1")
{
System.Web.UI.DataVisualization.Charting.Series s = e.Chart.Series[0];
System.Web.UI.DataVisualization.Charting.ChartGraphics cg = e.ChartGraphics;
// Highlight the maximum sales this year
for (int i = 0; i < s.Points.Count; i++)
{
string colour = StudentLogic.getCustomColour(float.Parse(s.Points[i].YValues[0].ToString()));
s.Points[i].Color = System.Drawing.ColorTranslator.FromHtml(colour);
}
}
}
protected void Chart1_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is System.Web.UI.DataVisualization.Charting.Series && ((System.Web.UI.DataVisualization.Charting.Series)e.ChartElement).Name == "Series1")
{
System.Web.UI.DataVisualization.Charting.Series s = e.Chart.Series[0];
System.Web.UI.DataVisualization.Charting.ChartGraphics cg = e.ChartGraphics;
double max = s.Points.FindMaxByValue().YValues[0];
// Highlight the maximum sales this year
for (int i = 0; i < s.Points.Count; i++)
{
string colour = StudentLogic.getColourForResult(float.Parse(s.Points[i].YValues[0].ToString()));
s.Points[i].Color = System.Drawing.ColorTranslator.FromHtml(colour);
if (s.Points[i].XValue.Equals(Session["courseID"].ToString()))
{
}
}
}
}
protected void Chart8_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
Label42.BackColor = Chart5.Series["Series1"].Color;
Label43.BackColor = Chart5.Series["Series2"].Color;
}
protected void Chart7_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
}
//-------------------------------------------------------------------------------------------------------
protected void Chart7_PostPaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
Label39.BackColor = Chart7.Series["Series1"].Color;
Label40.BackColor = Chart7.Series["Series2"].Color;
}
private void Chart1_PrePaint(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (e.ChartElement is ChartArea)
{
ChartArea area = (ChartArea)e.ChartElement;
if (area.Name == "Default")
{
double max;
double min;
double xMax;
double xMin;
// Find Minimum and Maximum values
FindMaxMin(out max, out min, out xMax, out xMin);
// Take Graphics object from chart
Graphics graph = e.ChartGraphics.Graphics;
// Convert X and Y values to screen position
float pixelYMax = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.Y, max);
float pixelXMax = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, xMax);
float pixelYMin = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.Y, min);
float pixelXMin = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, xMin);
float XMin = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, area.AxisX.Minimum);
float XMax = (float)e.ChartGraphics.GetPositionFromAxis("Default", AxisName.X, area.AxisX.Maximum);
// Specify with of triangle
float width = 2;
// Set Maximum points
PointF [] points = new PointF[3];
points[0].X = pixelXMax - width;
points[0].Y = pixelYMax - width - 2;
points[1].X = pixelXMax + width;
points[1].Y = pixelYMax - width - 2;
points[2].X = pixelXMax;
points[2].Y = pixelYMax - 1;
// Convert relative coordinates to absolute coordinates.
points[0] = e.ChartGraphics.GetAbsolutePoint(points[0]);
points[1] = e.ChartGraphics.GetAbsolutePoint(points[1]);
points[2] = e.ChartGraphics.GetAbsolutePoint(points[2]);
// Draw Maximum trangle
Pen darkPen = new Pen(Color.FromArgb(26, 59, 105), 1);
graph.FillPolygon(new SolidBrush(Color.FromArgb(220, 252, 180, 65)), points);
graph.DrawPolygon(darkPen, points);
points[0].X = XMin;
points[1].X = XMax;
points[0].Y = points[1].Y = pixelYMax;
// Convert relative coordinates to absolute coordinates.
points[0] = e.ChartGraphics.GetAbsolutePoint(points[0]);
points[1] = e.ChartGraphics.GetAbsolutePoint(points[1]);
graph.DrawLine(darkPen, points[0], points[1]);
// Set Minimum points
points = new PointF[3];
points[0].X = pixelXMin - width;
points[0].Y = pixelYMin + width + 2;
points[1].X = pixelXMin + width;
points[1].Y = pixelYMin + width + 2;
points[2].X = pixelXMin;
points[2].Y = pixelYMin + 1;
// Convert relative coordinates to absolute coordinates.
points[0] = e.ChartGraphics.GetAbsolutePoint(points[0]);
points[1] = e.ChartGraphics.GetAbsolutePoint(points[1]);
points[2] = e.ChartGraphics.GetAbsolutePoint(points[2]);
// Draw Minimum trangle
graph.FillPolygon(new SolidBrush(Color.FromArgb(220, 224, 64, 10)), points);
graph.DrawPolygon(darkPen, points);
points[0].X = XMin;
points[1].X = XMax;
points[0].Y = points[1].Y = pixelYMin;
// Convert relative coordinates to absolute coordinates.
points[0] = e.ChartGraphics.GetAbsolutePoint(points[0]);
points[1] = e.ChartGraphics.GetAbsolutePoint(points[1]);
graph.DrawLine(darkPen, points[0], points[1]);
}
}
}
/// <summary>
/// This method does all the work for the painting of the data table.
/// </summary>
private void PaintDataTable(object sender, System.Web.UI.DataVisualization.Charting.ChartPaintEventArgs e)
{
ChartArea area = (ChartArea)e.ChartElement;
// get the rect of the chart area
RectangleF rect = e.ChartGraphics.GetAbsoluteRectangle(area.Position.ToRectangleF());
// get the inner plot position
ElementPosition elemPos = area.InnerPlotPosition;
// find the coordinates of the inner plot position
float x = rect.X + (rect.Width / 100 * elemPos.X);
float y = rect.Y + (rect.Height / 100 * elemPos.Y);
float ChartAreaBottomY = rect.Y + rect.Height;
float width = (rect.Width / 100 * elemPos.Width);
float height = (rect.Height / 100 * elemPos.Height);
// find the height of the font that will be used
Font axisFont = area.AxisX.LabelStyle.Font;
string testString = "ForFontHeight";
SizeF axisFontSize = e.ChartGraphics.Graphics.MeasureString(testString, axisFont);
// find the height of the font that will be used
Font titleFont = area.AxisX.TitleFont;
testString = area.AxisX.Title;
SizeF titleFontSize = e.ChartGraphics.Graphics.MeasureString(testString, titleFont);
int seriesCount = 0;
// for each series that is attached to the chart area,
// draw some boxes around the labels in the color provided
for (int i = e.Chart.Series.Count - 1; i >= 0; i--)
{
if (area.Name == e.Chart.Series[i].ChartArea)
{
seriesCount++;
}
}
// now, if a box was actually drawn, then draw
// the verticle lines to separate the columns of the table.
if (seriesCount > 0)
{
for (int i = 0; i < e.Chart.Series.Count; i++)
{
if (area.Name == e.Chart.Series[i].ChartArea)
{
double min = area.AxisX.Minimum;
double max = area.AxisX.Maximum;
// modify the min value for the current axis view
if (area.AxisX.ScaleView.Position - 1 > min)
{
min = area.AxisX.ScaleView.Position - 1;
}
// modify the max value for the currect axis view
if ((area.AxisX.ScaleView.Position + area.AxisX.ScaleView.Size + 0.5) < max)
{
max = area.AxisX.ScaleView.Position + area.AxisX.ScaleView.Size + 0.5;
}
// find the starting point that will be display.
// this is dependent on the current axis view.
// this sample assumes the same number of points in each
// series so always take from the zeroth series
int pointIndex = 0;
foreach (DataPoint pt in ChartObj.Series[0].Points)
{
if (pt.XValue > min)
{
break;
}
pointIndex++;
}
bool TableLegendDrawn = false;
for (double AxisValue = min; AxisValue < max; AxisValue++)
{
float pixelX = (float)e.ChartGraphics.GetPositionFromAxis(area.Name, AxisName.X, AxisValue);
float nextPixelX = (float)e.ChartGraphics.GetPositionFromAxis(area.Name, AxisName.X, AxisValue + 1);
float pixelY = ChartAreaBottomY - titleFontSize.Height - (seriesCount * axisFontSize.Height);
PointF point1 = PointF.Empty;
PointF point2 = PointF.Empty;
// Set Maximum and minimum points
point1.X = pixelX;
point1.Y = 0;
// Convert relative coordinates to absolute coordinates.
point1 = e.ChartGraphics.GetAbsolutePoint(point1);
point2.X = point1.X;
point2.Y = ChartAreaBottomY - titleFontSize.Height;
point1.Y = pixelY;
// Draw connection line
e.ChartGraphics.Graphics.DrawLine(new Pen(borderColor), point1, point2);
point2.X = nextPixelX;
point2.Y = 0;
point2 = e.ChartGraphics.GetAbsolutePoint(point2);
StringFormat format = new StringFormat();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
// for each series draw one value in the column
int row = 0;
foreach (Series ser in ChartObj.Series)
{
if (area.Name == ser.ChartArea)
{
if (!TableLegendDrawn)
{
// draw the series color box
e.ChartGraphics.Graphics.FillRectangle(new SolidBrush(ser.Color),
x - 10, row * (axisFont.Height) + (point1.Y), 10, axisFontSize.Height);
e.ChartGraphics.Graphics.DrawRectangle(new Pen(borderColor),
x - 10, row * (axisFont.Height) + (point1.Y), 10, axisFontSize.Height);
e.ChartGraphics.Graphics.FillRectangle(new SolidBrush(tableColor),
x,
row * (axisFont.Height) + (point1.Y),
width,
axisFontSize.Height);
e.ChartGraphics.Graphics.DrawRectangle(new Pen(borderColor),
x,
row * (axisFont.Height) + (point1.Y),
width,
axisFontSize.Height);
}
if (pointIndex < ser.Points.Count)
{
string label = ser.Points[pointIndex].YValues[0].ToString();
RectangleF textRect = new RectangleF(point1.X, row * (axisFont.Height) + (point1.Y + 1), point2.X - point1.X, axisFont.Height);
e.ChartGraphics.Graphics.DrawString(label, axisFont, new SolidBrush(area.AxisX.LabelStyle.ForeColor), textRect, format);
}
row++;
}
}
TableLegendDrawn = true;
pointIndex++;
}
// do this only once so break!
break;
}
}
}
}
