public void Update()
{
Children.Clear();
xc = Width / 2.0;
yc = Height / 2.0;
rad = scale * System.Math.Min(Width / 2.5, Height / 2.5);
if (eLegend == Legends.LEGEND || eLegend == Legends.LEGEND_PERCENT)
{
rad *= 0.7;
xc -= 0.8 * (xc - rad);
}
double angle = 0;
double x1 = rad, y1 = 0, x2, y2;
Size size = new Size(0, 0);
Color col = Colors.White;
Brush brush;
Ellipse ellipse;
Rectangle rectangle;
TextBlock textblock;
for (int i = 0; i < Count; i++)
{
double frac = startColor + (endColor - startColor) * i / (double)(Count);
switch (eHSL)
{
case HSL.HUE:
col = (Color)ColorConverter.ConvertFromString(LDColours.HSLtoRGB(360 * frac, saturation, lightness));
break;
case HSL.SATURATION:
col = (Color)ColorConverter.ConvertFromString(LDColours.HSLtoRGB(hue, frac, lightness));
break;
case HSL.LIGHTNESS:
col = (Color)ColorConverter.ConvertFromString(LDColours.HSLtoRGB(hue, saturation, frac));
break;
}
brush = new SolidColorBrush(col);
if (centralColour != "")
{
GradientBrush gradientBrush = new GradientBrush("", new Primitive("1=" + centralColour + ";2=" + col.ToString() + ";"), "");
brush = gradientBrush.getBrush();
}
angle += 2 * System.Math.PI * Values[i] / Total;
x2 = rad + rad * System.Math.Sin(angle);
y2 = rad - rad * System.Math.Cos(angle);
bool bLargeArc = (Values[i] / Total) > 0.5;
switch (eStyle)
{
case Styles.PIE:
{
PathSegmentCollection pathSegments = new PathSegmentCollection();
pathSegments.Add(new LineSegment(new Point(x1, y1), false));
pathSegments.Add(new ArcSegment(new Point(x2, y2), new Size(rad, rad), angle, bLargeArc, SweepDirection.Clockwise, false));
PathFigureCollection pathFigures = new PathFigureCollection();
pathFigures.Add(new PathFigure(new Point(rad, rad), pathSegments, true));
PathFigureCollection figCollection = new PathFigureCollection(pathFigures);
ellipse = new Ellipse {
Width = 2 * rad, Height = 2 * rad, Fill = brush
};
ellipse.Clip = new PathGeometry(figCollection);
ellipse.Tag = new Segment(xc, yc, rad, rad, Name, Labels[i]);
ellipse.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(ellipse);
Chart.SetLeft(ellipse, xc - rad);
Chart.SetTop(ellipse, yc - rad);
}
break;
case Styles.DOUGHNUT:
{
PathFigureCollection figCollection;
if (bDualDoughnut)
{
double x1inner = x1 + (1 - LDChart.DoughnutFraction) * (rad - x1);
double y1inner = y1 + (1 - LDChart.DoughnutFraction) * (rad - y1);
double x2inner = x2 + (1 - LDChart.DoughnutFraction) * (rad - x2);
double y2inner = y2 + (1 - LDChart.DoughnutFraction) * (rad - y2);
PathSegmentCollection pathSegments = new PathSegmentCollection();
pathSegments.Add(new LineSegment(new Point(x1, y1), false));
pathSegments.Add(new ArcSegment(new Point(x2, y2), new Size(rad, rad), angle, bLargeArc, SweepDirection.Clockwise, false));
pathSegments.Add(new LineSegment(new Point(x2inner, y2inner), false));
pathSegments.Add(new ArcSegment(new Point(x1inner, y1inner), new Size(rad * LDChart.DoughnutFraction, rad * LDChart.DoughnutFraction), angle, bLargeArc, SweepDirection.Counterclockwise, false));
PathFigureCollection pathFigures = new PathFigureCollection();
pathFigures.Add(new PathFigure(new Point(x1inner, y1inner), pathSegments, true));
figCollection = new PathFigureCollection(pathFigures);
}
else
{
PathSegmentCollection pathSegments = new PathSegmentCollection();
pathSegments.Add(new LineSegment(new Point(x1, y1), false));
pathSegments.Add(new ArcSegment(new Point(x2, y2), new Size(rad, rad), angle, bLargeArc, SweepDirection.Clockwise, false));
PathFigureCollection pathFigures = new PathFigureCollection();
pathFigures.Add(new PathFigure(new Point(rad, rad), pathSegments, true));
figCollection = new PathFigureCollection(pathFigures);
}
ellipse = new Ellipse {
Width = 2 * rad, Height = 2 * rad, Fill = brush
};
ellipse.Clip = new PathGeometry(figCollection);
ellipse.Tag = new Segment(xc, yc, rad, rad, Name, Labels[i]);
ellipse.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(ellipse);
Chart.SetLeft(ellipse, xc - rad);
Chart.SetTop(ellipse, yc - rad);
}
break;
case Styles.BUBBLE:
{
double sin = System.Math.Sin(System.Math.PI * Values[i] / Total);
double r = rad * sin / (1.0 + sin);
angle -= System.Math.PI * Values[i] / Total;
double x = xc + (rad - r) * System.Math.Sin(angle);
double y = yc - (rad - r) * System.Math.Cos(angle);
angle += System.Math.PI * Values[i] / Total;
ellipse = new Ellipse {
Width = 2 * r, Height = 2 * r, Fill = brush
};
ellipse.Tag = new Segment(x, y, r, r, Name, Labels[i]);
ellipse.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(ellipse);
Chart.SetLeft(ellipse, x - r);
Chart.SetTop(ellipse, y - r);
}
break;
case Styles.BAR:
{
double w = rad * (Values[i] - Min) / (Max - Min);
double h = rad / (double)Count;
double x = xc - rad + w;
double y = yc - rad + (2 * i + 1) * h;
rectangle = new Rectangle {
Width = 2 * w, Height = 2 * h, Fill = brush
};
rectangle.Tag = new Segment(x, y, w, h, Name, Labels[i]);
rectangle.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(rectangle);
Chart.SetLeft(rectangle, x - w);
Chart.SetTop(rectangle, y - h);
}
break;
case Styles.COLUMN:
{
double w = rad / (double)Count;
double h = rad * (Values[i] - Min) / (Max - Min);
double x = xc - rad + (2 * i + 1) * w;
double y = yc + rad - h;
rectangle = new Rectangle {
Width = 2 * w, Height = 2 * h, Fill = brush
};
rectangle.Tag = new Segment(x, y, w, h, Name, Labels[i]);
rectangle.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(rectangle);
Chart.SetLeft(rectangle, x - w);
Chart.SetTop(rectangle, y - h);
}
break;
}
brush = new SolidColorBrush(col);
x1 = x2;
y1 = y2;
if (eLegend == Legends.OVERLAY || eLegend == Legends.PERCENT || eLegend == Legends.LEGEND_PERCENT)
{
textblock = new TextBlock
{
Text = eLegend == Legends.OVERLAY ? Labels[i] : string.Format("{0:F1}%", 100 * Values[i] / Total),
Foreground = foreground,
FontFamily = fontFamily,
FontSize = fontSize,
FontWeight = fontWeight,
FontStyle = fontStyle
};
if (bLegendBackground)
{
textblock.Background = brush;
}
textblock.FontSize *= legendScale;
textblock.MouseDown += new MouseButtonEventHandler(_ValueClickedEvent);
Children.Add(textblock);
textblock.Measure(size);
textblock.Arrange(new Rect(size));
angle -= System.Math.PI * Values[i] / Total;
double w = textblock.ActualWidth / 2.0;
double h = textblock.ActualHeight / 2.0;
if (eStyle == Styles.PIE)
{
x2 = xc + 0.67 * rad * System.Math.Sin(angle);
y2 = yc - 0.67 * rad * System.Math.Cos(angle);
}
else if (eStyle == Styles.DOUGHNUT)
{
x2 = xc + (1 + LDChart.DoughnutFraction) / 2.0 * rad * System.Math.Sin(angle);
y2 = yc - (1 + LDChart.DoughnutFraction) / 2.0 * rad * System.Math.Cos(angle);
}
else if (eStyle == Styles.BUBBLE)
{
double sin = System.Math.Sin(System.Math.PI * Values[i] / Total);
double r = rad * sin / (1.0 + sin);
x2 = xc + (rad - r) * System.Math.Sin(angle);
y2 = yc - (rad - r) * System.Math.Cos(angle);
}
else if (eStyle == Styles.BAR)
{
//x2 = xc - rad + rad * (Values[i] - Min) / (Max - Min);
x2 = xc - rad + w + 5;
y2 = yc - rad + (2 * i + 1) * rad / (double)Count;
}
else if (eStyle == Styles.COLUMN)
{
x2 = xc - rad + (2 * i + 1) * rad / (double)Count;
//y2 = yc + rad - rad * (Values[i] - Min) / (Max - Min);
y2 = yc + rad - w - 5;
RotateTransform rotateTransform = new RotateTransform();
rotateTransform.CenterX = w;
rotateTransform.CenterY = h;
rotateTransform.Angle = -90;
textblock.RenderTransform = rotateTransform;
}
angle += System.Math.PI * Values[i] / Total;
textblock.Tag = new Segment(x2, y2, w, h, Name, Labels[i]);
Chart.SetLeft(textblock, x2 - w);
Chart.SetTop(textblock, y2 - h);
Canvas.SetZIndex(textblock, 1);
}
if (eLegend == Legends.LEGEND || eLegend == Legends.LEGEND_PERCENT)
{
rectangle = new Rectangle {
Width = 10 * legendScale, Height = 10 * legendScale, Fill = brush
};
Children.Add(rectangle);
x2 = 2 * xc;
y2 = (Width - 15 * Count * legendScale) / 2 + 15 * i * legendScale;
Chart.SetLeft(rectangle, x2);
Chart.SetTop(rectangle, y2);
Canvas.SetZIndex(rectangle, 1);
textblock = new TextBlock
{
Text = Labels[i],
Foreground = foreground,
FontFamily = fontFamily,
FontSize = fontSize,
FontWeight = fontWeight,
FontStyle = fontStyle
};
if (bLegendBackground)
{
textblock.Background = brush;
}
textblock.FontSize *= legendScale;
Children.Add(textblock);
textblock.Measure(size);
textblock.Arrange(new Rect(size));
Chart.SetLeft(textblock, x2 + 15 * legendScale);
Chart.SetTop(textblock, y2 + 5 * legendScale - textblock.ActualHeight / 2.0);
Canvas.SetZIndex(textblock, 1);
}
}
if (eStyle == Styles.DOUGHNUT && !bDualDoughnut)
{
ellipse = new Ellipse {
Width = 2 * LDChart.DoughnutFraction * rad, Height = 2 * LDChart.DoughnutFraction * rad, Fill = Background
};
Children.Add(ellipse);
Chart.SetLeft(ellipse, xc - LDChart.DoughnutFraction * rad);
Chart.SetTop(ellipse, yc - LDChart.DoughnutFraction * rad);
}
}
