private void _drawLines(int mod, int rem)
{
bool animate = (this.AnimationDuration > 0);
double marginLeft = MarginLeft, marginTop = MarginTop;
double marginRight = MarginRight, marginBottom = MarginBottom;
double gridWidth = (ChartCanvas.Width - marginLeft - marginRight);
double gridHeight = (ChartCanvas.Height - marginTop - marginBottom);
LookAndFeel lf = CurrentLookAndFeel;
string lineDotXAML = lf.GetLineDotXAML(),
pathXAML = lf.GetLinePathXAML();
Path pathElem, dotElement;
List <UIElement> dataElems = null;
MatrixTransform defaultTransform = null;
if (animate)
{
dataElems = DataElements;
}
bool isStacked = (Type == ChartType.AREA_STACKED);
ChartModel model = Model;
string[] groupLabels = model.GroupLabels;
int groupCount = groupLabels.Length;
string[] seriesLabels = model.SeriesLabels;
int seriesCount = seriesLabels.Length;
Color[] seriesColors = model.SeriesColors;
double[,] yValues = model.YValues;
double minValue = model.MinYValue, maxValue = model.MaxYValue;
int yValueCount = yValues.GetUpperBound(0) + 1;
string gradientXAML = lf.GetElementGradientXAML();
double barWidth = gridWidth / Math.Max(yValueCount, groupCount);
double dx, dy;
for (int i = 0; i < seriesCount; ++i)
{
// for combo charts we draw a bar every once in a mod.
if ((mod > 1) && (i % mod) != rem)
{
continue;
}
dx = marginLeft + barWidth / 2;
StringBuilder sb = new StringBuilder();
for (int j = 0; j < yValueCount; ++j)
{
dy = gridHeight + marginTop - gridHeight * (yValues[j, i] - minValue) / (maxValue - minValue);
if (j == 0)
{
sb.Append("M").Append(dx).Append(",").Append(dy);
}
else
{
sb.Append("L").Append(dx).Append(",").Append(dy);
}
dotElement = XamlReader.Load(lineDotXAML) as Path;
EllipseGeometry rectG = dotElement.Data as EllipseGeometry;
rectG.Center = new Point(dx, dy);
if (gradientXAML != null)
{
SetGradientOnElement(dotElement, gradientXAML, seriesColors[i], 0xe5);
}
else
{
SetFillOnElement(dotElement, seriesColors[i]);
}
dotElement.SetValue(Path.StrokeProperty, new SolidColorBrush(seriesColors[i]));
if (animate)
{
dataElems.Add(dotElement);
defaultTransform = new MatrixTransform();
Matrix m = new Matrix();
m.M11 = 0.0;
defaultTransform.Matrix = m;
dotElement.SetValue(UIElement.RenderTransformProperty, defaultTransform);
}
ChartCanvas.Children.Add(dotElement);
dx += barWidth;
}
pathElem = CreatePathFromXAMLAndData(pathXAML, sb);
// There is no fill for lines
pathElem.SetValue(Path.StrokeProperty, new SolidColorBrush(seriesColors[i]));
SetExpandosOnElement(pathElem, -1, i, new Point());
if (DisplayToolTip)
{
pathElem.MouseMove += new MouseEventHandler(ShowToolTip);
pathElem.MouseLeave += new MouseEventHandler(HideToolTip);
}
pathElem.MouseLeftButtonUp += new MouseButtonEventHandler(ChartDataClicked);
if (animate)
{
dataElems.Add(pathElem);
defaultTransform = new MatrixTransform();
Matrix m = new Matrix();
m.M11 = 0.0;
defaultTransform.Matrix = m;
pathElem.SetValue(UIElement.RenderTransformProperty, defaultTransform);
}
ChartCanvas.Children.Add(pathElem);
}
}
