/// <summary>
/// Create a URL for a <see cref="CurveItem" /> that includes the index of the
/// point that was selected.
/// </summary>
/// <remarks>
/// An "index" parameter is added to the <see cref="Url" /> property for this
/// link to indicate which point was selected. Further, if the
/// X or Y axes that correspond to this <see cref="CurveItem" /> are of
/// <see cref="AxisType.Text" />, then an
/// additional parameter will be added containing the text value that
/// corresponds to the <paramref name="index" /> of the selected point.
/// The <see cref="XAxis" /> text parameter will be labeled "xtext", and
/// the <see cref="YAxis" /> text parameter will be labeled "ytext".
/// </remarks>
/// <param name="index">The zero-based index of the selected point</param>
/// <param name="pane">The <see cref="GraphPane" /> of interest</param>
/// <param name="curve">The <see cref="CurveItem" /> for which to
/// make the url string.</param>
/// <returns>A string containing the url with an index parameter added.</returns>
public virtual string MakeCurveItemUrl(GraphPane pane, CurveItem curve, int index)
{
string url = _url;
if (url.IndexOf('?') >= 0)
{
url += "&index=" + index.ToString();
}
else
{
url += "?index=" + index.ToString();
}
Axis xAxis = curve.GetXAxis(pane);
if (xAxis.Type == AxisType.Text && index >= 0 &&
xAxis.Scale.TextLabels != null &&
index <= xAxis.Scale.TextLabels.Length)
{
url += "&xtext=" + xAxis.Scale.TextLabels[index];
}
Axis yAxis = curve.GetYAxis(pane);
if (yAxis != null && yAxis.Type == AxisType.Text && index >= 0 &&
yAxis.Scale.TextLabels != null &&
index <= yAxis.Scale.TextLabels.Length)
{
url += "&ytext=" + yAxis.Scale.TextLabels[index];
}
return(url);
}
private bool HandlePointValues(PointF mousePt, ZedGraphControl sender)
{
int iPt;
GraphPane pane;
object nearestObj;
using (Graphics g = this.CreateGraphics())
{
if (sender.MasterPane.FindNearestPaneObject(mousePt,
g, out pane, out nearestObj, out iPt))
{
if (nearestObj is CurveItem && iPt >= 0)
{
CurveItem curve = (CurveItem)nearestObj;
// Provide Callback for User to customize the tooltips
PointPair pt = curve.Points[iPt];
if (pt.Tag is string)
{
this.toolTip1.SetToolTip(this, (string)pt.Tag);
}
else
{
double xVal, yVal, lowVal;
ValueHandler valueHandler = new ValueHandler(pane, false);
if ((curve is BarItem || curve is ErrorBarItem || curve is HiLowBarItem) &&
pane.BarSettings.Base != BarBase.X)
{
valueHandler.GetValues(curve, iPt, out yVal, out lowVal, out xVal);
}
else
{
valueHandler.GetValues(curve, iPt, out xVal, out lowVal, out yVal);
}
string xStr = MakeValueLabel(curve.GetXAxis(pane), xVal, iPt, curve.IsOverrideOrdinal);
string yStr = MakeValueLabel(curve.GetYAxis(pane), yVal, iPt, curve.IsOverrideOrdinal);
this.toolTip1.SetToolTip(sender, xStr + "\n" + yStr);
this.toolTip1.ForeColor = curve.Color;
this.toolTip1.BackColor = Color.Black;
toolTip1.Active = true;
//this.pointToolTip.SetToolTip( this,
// curve.Points[iPt].ToString( this.pointValueFormat ) );
}
}
else
{
toolTip1.Active = false;
}
}
else
{
toolTip1.Active = false;
}
//g.Dispose();
}
return(true);
}
private static Point TransformToFormPoint(CurveItem curve, GraphPane gp, int iPt)
{
//todo : make sure that it is for form
int x = (int)(curve.GetXAxis(gp).Scale.Transform(curve.Points[iPt].X) + 0.5);
int y = (int)(curve.GetYAxis(gp).Scale.Transform(curve.Points[iPt].Y) + 0.5);
return(new Point(x, y));
}
public DataFrameBuilder(GraphPane graphPane, CurveItem curveItem)
{
GraphPane = graphPane;
CurveItem = curveItem;
var msPointList = curveItem.Points as MSPointList;
if (msPointList != null)
{
Points = msPointList.FullList;
}
else
{
Points = curveItem.Points;
}
XAxis = curveItem.GetXAxis(graphPane);
YAxis = curveItem.GetYAxis(graphPane);
BaseAxis = curveItem.BaseAxis(graphPane);
ValueAxis = curveItem.ValueAxis(graphPane);
}
public void DrawFilled(Graphics g, GraphPane pane, CurveItem curve, float scaleFactor)
{
var source = this;
var yAxis = curve.GetYAxis(pane);
var xAxis = curve.GetXAxis(pane);
var basePix = yAxis.Scale.Transform(0.0);
using (var pen = source.GetPen(pane, scaleFactor))
{
var list1 = new List <PointF>();
var list2 = new List <PointF>();
for (var i = 0; i < curve.Points.Count; i++)
{
var pt = curve.Points[i];
if (pt.X != PointPair.Missing &&
pt.Y != PointPair.Missing &&
!Double.IsNaN(pt.X) &&
!Double.IsNaN(pt.Y) &&
!Double.IsInfinity(pt.X) &&
!Double.IsInfinity(pt.Y) &&
(!xAxis.Scale.IsLog || pt.X > 0.0) &&
(!yAxis.Scale.IsLog || pt.Y > 0.0))
{
var pixY = yAxis.Scale.Transform(curve.IsOverrideOrdinal, i, pt.Y);
var pixX = xAxis.Scale.Transform(curve.IsOverrideOrdinal, i, pt.X);
var pixZ = yAxis.Scale.Transform(curve.IsOverrideOrdinal, i, pt.Z);
list1.Add(new PointF(pixX, pixY));
list2.Add(new PointF(pixX, pixZ));
}
}
list2.Reverse();
list1.AddRange(list2);
var points = list1.ToArray();
g.SmoothingMode = SmoothingMode.AntiAlias;
g.FillPolygon(Fill.Brush, points);
g.DrawPolygon(pen, points);
}
}
