protected override bool Render(RenderContext rc)
{
PieRenderContext context = rc as PieRenderContext;
if ((((context == null) || double.IsNaN(context.PieInfo.Center.X)) || (double.IsNaN(context.PieInfo.Center.Y) || (context.PieInfo.RadiusX <= 0.0))) || (context.PieInfo.RadiusY <= 0.0))
{
return(false);
}
// uno不支持Path.Data为非PathGeometry！
// wasm中在给Path.Data赋值前内容必须完整，后添加的Figures无效！众里寻他千百度，因为赋值没按顺序，操！
PathGeometry geometry = new PathGeometry();
PieInfo pieInfo = context.PieInfo;
if ((pieInfo.InnerRadius > 0.0) && (pieInfo.Sweep == 360.0))
{
CreateFullPieWithHole(geometry, pieInfo);
}
else
{
var figure = (context.PieInfo.InnerRadius > 0.0) ? CreatePieWithHole(pieInfo) : CreatePie(pieInfo);
geometry.Figures.Add(figure);
}
Point radiusCenter = pieInfo.GetRadiusCenter();
_lrect.X = radiusCenter.X;
_lrect.Y = radiusCenter.Y;
_pi = pieInfo;
TranslateTransform transform = new TranslateTransform();
transform.X = _pi.Center.X;
transform.Y = _pi.Center.Y;
geometry.Transform = transform;
Data = geometry;
_offset0 = new Point(Canvas.GetLeft(this), Canvas.GetTop(this));
UpdateOffset();
return(true);
}
UIElement[] IView2DRenderer.Generate()
{
int nser = _dataInfo.nser;
int npts = _dataInfo.npts;
if ((nser == 0) || (npts == 0))
{
return(null);
}
List <UIElement> objects = new List <UIElement>();
int num3 = 0;
int num4 = 0;
double width = _sz.Width;
double height = _sz.Height;
double num7 = width / ((double)_ncols);
double num8 = height / ((double)_nrows);
double num9 = 0.5 * Math.Min((double)(width / ((double)_ncols)), (double)(height / ((double)_nrows)));
double naN = double.NaN;
double startingAngle = 0.0;
SweepDirection clockwise = SweepDirection.Clockwise;
bool flag = false;
Chart chart = base.Chart;
double d = 0.0;
if (chart != null)
{
startingAngle = PieOptions.GetStartingAngle(chart);
clockwise = PieOptions.GetDirection(chart);
flag = base.Chart.ChartType == ChartType.PieStacked;
naN = PieOptions.GetOffset(chart);
d = PieOptions.GetInnerRadius(chart);
}
if (double.IsNaN(naN))
{
naN = base.Offset;
}
if (double.IsNaN(d) || (d == 0.0))
{
d = base.InnerRadius;
}
for (int i = 0; i < nser; i++)
{
Point point = new Point();
double radiusX = num9 * base.Radius;
double inner = d;
if (flag)
{
inner = (((double)i) / ((double)nser)) * radiusX;
radiusX *= ((double)(i + 1)) / ((double)nser);
inner /= radiusX;
}
point = new Point((num4 - (0.5 * _ncols)) + 0.5, (num3 - (0.5 * _nrows)) + 0.5)
{
X = (num7 * point.X) + (0.5 * width),
Y = (num8 * point.Y) + (0.5 * height)
};
IDataSeriesInfo info = Series[i];
DataSeries series = info as DataSeries;
series.Children.Clear();
objects.Add(series);
double num16 = _dataInfo.SumsAbs[i];
double[,] values = info.GetValues();
if (!string.IsNullOrEmpty(series.Label))
{
DataTemplate seriesLabelTemplate = null;
if (chart != null)
{
seriesLabelTemplate = PieOptions.GetSeriesLabelTemplate(chart);
}
UIElement el = null;
if (seriesLabelTemplate != null)
{
el = seriesLabelTemplate.LoadContent() as UIElement;
FrameworkElement element2 = el as FrameworkElement;
if (element2 != null)
{
element2.DataContext = series;
}
}
if (el == null)
{
TextBlock block = new TextBlock();
block.Text = series.Label;
IRenderer renderer = this;
Control visual = renderer.Visual as Control;
if (visual != null)
{
block.FontFamily = visual.FontFamily;
block.FontSize = visual.FontSize;
block.FontStretch = visual.FontStretch;
block.FontStyle = visual.FontStyle;
block.FontWeight = visual.FontWeight;
}
el = block;
}
Size size = Utils.GetSize(el);
Canvas.SetLeft(el, point.X - (0.5 * size.Width));
if ((size.Height + radiusX) > (0.5 * num8))
{
radiusX = (0.5 * num8) - size.Height;
}
if (flag)
{
Canvas.SetTop(el, (point.Y - (radiusX * inner)) - size.Height);
}
else
{
Canvas.SetTop(el, (point.Y - radiusX) - size.Height);
}
objects.Add(el);
}
double angle = startingAngle;
double num18 = 0.0;
if (naN > 0.0)
{
num18 = naN * radiusX;
radiusX *= 1.0 - naN;
}
int num19 = (values != null) ? values.GetLength(1) : 0;
for (int j = 0; j < num19; j++)
{
double num21 = values[0, j];
if (!double.IsNaN(num21) && (num21 != 0.0))
{
ShapeStyle shapeStyle = StyleGen.GetStyle(j);
double sweep = (Math.Abs(num21) / num16) * 360.0;
if (sweep != 0.0)
{
if (clockwise == SweepDirection.Counterclockwise)
{
sweep = -sweep;
}
Point center = point;
if ((num18 > 0.0) && (sweep != 360.0))
{
double num23 = 0.017453292519943295 * (angle + (0.5 * sweep));
center.X += num18 * Math.Cos(num23);
center.Y += num18 * Math.Sin(num23);
}
PieRenderContext rc = new PieRenderContext();
if (sweep < 0.0)
{
rc.PieInfo = new PieInfo(center, radiusX, radiusX, inner, angle + sweep, -sweep, 0.0, 0.0);
}
else
{
rc.PieInfo = new PieInfo(center, radiusX, radiusX, inner, angle, sweep, 0.0, 0.0);
}
DataPoint dp = series.CreateDataPoint(i, j);
IPlotElement pe = null;
if ((series.Symbol is PlotElement) && ((IPlotElement)series.Symbol).IsCompatible(this))
{
pe = ((PlotElement)series.Symbol).Clone() as IPlotElement;
}
if ((pe == null) && (Symbol is PlotElement))
{
pe = ((PlotElement)Symbol).Clone() as IPlotElement;
}
RenderElement(objects, pe, series, rc, shapeStyle, dp);
if (series.ReadLocalValue(DataSeries.SymbolStrokeProperty) != DependencyProperty.UnsetValue)
{
((PlotElement)pe).Stroke = series.SymbolStroke;
}
if (series.ReadLocalValue(DataSeries.SymbolStrokeThicknessProperty) != DependencyProperty.UnsetValue)
{
((PlotElement)pe).StrokeThickness = series.SymbolStrokeThickness;
}
angle += sweep;
}
}
}
if (!flag)
{
num4++;
if (num4 >= _ncols)
{
num4 = 0;
num3++;
}
}
}
return(objects.ToArray());
}
