internal override void DrawCallout(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF labelPosition, SizeF labelSize, StringFormat format, PointF markerPosition, SizeF markerSize, LabelAlignmentTypes labelAlignment)
{
}
internal override bool IsSmartLabelCollide(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF position, SizeF size, PointF markerPosition, StringFormat format, LabelAlignmentTypes labelAlignment, bool checkCalloutLineOverlapping)
{
bool result = false;
if (common.Chart != null)
{
foreach (ChartArea chartArea in common.Chart.ChartAreas)
{
if (area.Visible)
{
chartArea.smartLabels.checkAllCollisions = true;
if (chartArea.smartLabels.IsSmartLabelCollide(common, graph, area, smartLabelsStyle, position, size, markerPosition, format, labelAlignment, checkCalloutLineOverlapping))
{
chartArea.smartLabels.checkAllCollisions = false;
return(true);
}
chartArea.smartLabels.checkAllCollisions = false;
}
}
}
RectangleF labelPosition = GetLabelPosition(graph, position, size, format, adjustForDrawing: false);
bool flag = (labelAlignment == LabelAlignmentTypes.Center && !smartLabelsStyle.MarkerOverlapping) ? true : false;
if (checkAllCollisions)
{
flag = false;
}
foreach (RectangleF smartLabelsPosition in smartLabelsPositions)
{
if (smartLabelsPosition.IntersectsWith(labelPosition))
{
if (!flag)
{
return(true);
}
flag = false;
}
}
return(result);
}
private bool FindNewPosition(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, ref PointF labelPosition, SizeF labelSize, ref StringFormat format, PointF markerPosition, ref SizeF markerSize, ref LabelAlignmentTypes labelAlignment, bool checkCalloutLineOverlapping)
{
SizeF sizeF = SizeF.Empty;
PointF pointF = PointF.Empty;
int i = 0;
float num = 0f;
bool flag = false;
LabelAlignmentTypes[] array = new LabelAlignmentTypes[9]
{
LabelAlignmentTypes.Top,
LabelAlignmentTypes.Bottom,
LabelAlignmentTypes.Left,
LabelAlignmentTypes.Right,
LabelAlignmentTypes.TopLeft,
LabelAlignmentTypes.TopRight,
LabelAlignmentTypes.BottomLeft,
LabelAlignmentTypes.BottomRight,
LabelAlignmentTypes.Center
};
SizeF relativeSize = graph.GetRelativeSize(new SizeF(1f, 1f));
bool flag2 = false;
float num2 = 2f;
float num3 = (float)Math.Min(smartLabelsStyle.MinMovingDistance, smartLabelsStyle.MaxMovingDistance);
float num4 = (float)Math.Max(smartLabelsStyle.MinMovingDistance, smartLabelsStyle.MaxMovingDistance);
num = num3;
while (!flag2 && num <= num4)
{
sizeF = new SizeF(markerSize.Width + num * (relativeSize.Width * 2f), markerSize.Height + num * (relativeSize.Height * 2f));
for (i = 0; i < array.Length; i++)
{
if ((array[i] != LabelAlignmentTypes.Center || num == num3) && (smartLabelsStyle.MovingDirection & array[i]) == array[i])
{
pointF = CalculatePosition(array[i], markerPosition, sizeF, labelSize, ref format);
if (!IsSmartLabelCollide(common, null, area, smartLabelsStyle, pointF, labelSize, markerPosition, format, array[i], checkCalloutLineOverlapping))
{
flag2 = true;
flag = ((num != 0f) ? true : false);
break;
}
}
}
num += num2;
}
if (flag2)
{
markerSize = sizeF;
labelPosition = pointF;
labelAlignment = array[i];
}
if (!flag2 && smartLabelsStyle.HideOverlapped)
{
labelPosition = PointF.Empty;
}
if (!(flag && flag2))
{
return(false);
}
return(true);
}
internal PointF AdjustSmartLabelPosition(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF labelPosition, SizeF labelSize, ref StringFormat format, PointF markerPosition, SizeF markerSize, LabelAlignmentTypes labelAlignment, bool checkCalloutLineOverlapping)
{
if (smartLabelsStyle.Enabled)
{
bool num = smartLabelsPositions.Count == 0;
AddMarkersPosition(common, area);
if (num)
{
markersCount = smartLabelsPositions.Count;
}
if (IsSmartLabelCollide(common, graph, area, smartLabelsStyle, labelPosition, labelSize, markerPosition, format, labelAlignment, checkCalloutLineOverlapping) && (FindNewPosition(common, graph, area, smartLabelsStyle, ref labelPosition, labelSize, ref format, markerPosition, ref markerSize, ref labelAlignment, checkCalloutLineOverlapping) || labelAlignment == LabelAlignmentTypes.BottomLeft || labelAlignment == LabelAlignmentTypes.BottomRight || labelAlignment == LabelAlignmentTypes.TopLeft || labelAlignment == LabelAlignmentTypes.TopRight) && !labelPosition.IsEmpty)
{
DrawCallout(common, graph, area, smartLabelsStyle, labelPosition, labelSize, format, markerPosition, markerSize, labelAlignment);
}
AddSmartLabelPosition(graph, area, labelPosition, labelSize, format);
}
return(labelPosition);
}
internal PointF AdjustSmartLabelPosition(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF labelPosition, SizeF labelSize, ref StringFormat format, PointF markerPosition, SizeF markerSize, LabelAlignmentTypes labelAlignment)
{
return(AdjustSmartLabelPosition(common, graph, area, smartLabelsStyle, labelPosition, labelSize, ref format, markerPosition, markerSize, labelAlignment, checkCalloutLineOverlapping: false));
}
internal virtual bool IsSmartLabelCollide(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF position, SizeF size, PointF markerPosition, StringFormat format, LabelAlignmentTypes labelAlignment, bool checkCalloutLineOverlapping)
{
bool flag = false;
RectangleF labelPosition = GetLabelPosition(graph, position, size, format, adjustForDrawing: false);
if (labelPosition.X < 0f || labelPosition.Y < 0f || labelPosition.Bottom > 100f || labelPosition.Right > 100f)
{
flag = true;
}
if (!flag && area != null)
{
if (area.chartAreaIsCurcular)
{
using (GraphicsPath graphicsPath = new GraphicsPath())
{
graphicsPath.AddEllipse(area.PlotAreaPosition.ToRectangleF());
if (smartLabelsStyle.AllowOutsidePlotArea == LabelOutsidePlotAreaStyle.Partial)
{
PointF point = new PointF(labelPosition.X + labelPosition.Width / 2f, labelPosition.Y + labelPosition.Height / 2f);
if (!graphicsPath.IsVisible(point))
{
flag = true;
}
}
else if (smartLabelsStyle.AllowOutsidePlotArea == LabelOutsidePlotAreaStyle.No && (!graphicsPath.IsVisible(labelPosition.Location) || !graphicsPath.IsVisible(new PointF(labelPosition.Right, labelPosition.Y)) || !graphicsPath.IsVisible(new PointF(labelPosition.Right, labelPosition.Bottom)) || !graphicsPath.IsVisible(new PointF(labelPosition.X, labelPosition.Bottom))))
{
flag = true;
}
}
}
else if (smartLabelsStyle.AllowOutsidePlotArea == LabelOutsidePlotAreaStyle.Partial)
{
PointF pt = new PointF(labelPosition.X + labelPosition.Width / 2f, labelPosition.Y + labelPosition.Height / 2f);
if (!area.PlotAreaPosition.ToRectangleF().Contains(pt))
{
flag = true;
}
}
else if (smartLabelsStyle.AllowOutsidePlotArea == LabelOutsidePlotAreaStyle.No && !area.PlotAreaPosition.ToRectangleF().Contains(labelPosition))
{
flag = true;
}
}
bool flag2 = (labelAlignment == LabelAlignmentTypes.Center && !smartLabelsStyle.MarkerOverlapping) ? true : false;
if (checkAllCollisions)
{
flag2 = false;
}
if (!flag && smartLabelsPositions != null)
{
int num = -1;
{
foreach (RectangleF smartLabelsPosition in smartLabelsPositions)
{
num++;
bool flag3 = smartLabelsPosition.IntersectsWith(labelPosition);
if (!flag3 && checkCalloutLineOverlapping && num >= markersCount && LineIntersectRectangle(point2: new PointF(labelPosition.X + labelPosition.Width / 2f, labelPosition.Y + labelPosition.Height / 2f), rect: smartLabelsPosition, point1: markerPosition))
{
flag3 = true;
}
if (flag3)
{
if (!flag2)
{
return(true);
}
flag2 = false;
}
}
return(flag);
}
}
return(flag);
}
internal virtual void DrawCallout(CommonElements common, ChartGraphics graph, ChartArea area, SmartLabelsStyle smartLabelsStyle, PointF labelPosition, SizeF labelSize, StringFormat format, PointF markerPosition, SizeF markerSize, LabelAlignmentTypes labelAlignment)
{
RectangleF absoluteRectangle = graph.GetAbsoluteRectangle(GetLabelPosition(graph, labelPosition, labelSize, format, adjustForDrawing: true));
Pen pen = new Pen(smartLabelsStyle.CalloutLineColor, smartLabelsStyle.CalloutLineWidth);
pen.DashStyle = graph.GetPenStyle(smartLabelsStyle.CalloutLineStyle);
if (smartLabelsStyle.CalloutStyle == LabelCalloutStyle.Box)
{
if (smartLabelsStyle.CalloutBackColor != Color.Transparent)
{
Brush brush = new SolidBrush(smartLabelsStyle.CalloutBackColor);
graph.FillRectangle(brush, absoluteRectangle);
}
graph.DrawRectangle(pen, absoluteRectangle.X, absoluteRectangle.Y, absoluteRectangle.Width, absoluteRectangle.Height);
}
else if (smartLabelsStyle.CalloutStyle == LabelCalloutStyle.Underlined)
{
switch (labelAlignment)
{
case LabelAlignmentTypes.Right:
graph.DrawLine(pen, absoluteRectangle.X, absoluteRectangle.Top, absoluteRectangle.X, absoluteRectangle.Bottom);
break;
case LabelAlignmentTypes.Left:
graph.DrawLine(pen, absoluteRectangle.Right, absoluteRectangle.Top, absoluteRectangle.Right, absoluteRectangle.Bottom);
break;
case LabelAlignmentTypes.Bottom:
graph.DrawLine(pen, absoluteRectangle.X, absoluteRectangle.Top, absoluteRectangle.Right, absoluteRectangle.Top);
break;
default:
graph.DrawLine(pen, absoluteRectangle.X, absoluteRectangle.Bottom, absoluteRectangle.Right, absoluteRectangle.Bottom);
break;
}
}
PointF absolutePoint = graph.GetAbsolutePoint(labelPosition);
switch (labelAlignment)
{
case LabelAlignmentTypes.Top:
absolutePoint.Y = absoluteRectangle.Bottom;
break;
case LabelAlignmentTypes.Bottom:
absolutePoint.Y = absoluteRectangle.Top;
break;
}
if (smartLabelsStyle.CalloutStyle == LabelCalloutStyle.Underlined && (labelAlignment == LabelAlignmentTypes.TopLeft || labelAlignment == LabelAlignmentTypes.TopRight || labelAlignment == LabelAlignmentTypes.BottomLeft || labelAlignment == LabelAlignmentTypes.BottomRight))
{
absolutePoint.Y = absoluteRectangle.Bottom;
}
if (smartLabelsStyle.CalloutLineAnchorCap == LineAnchorCap.Arrow)
{
pen.StartCap = LineCap.Custom;
pen.CustomStartCap = new AdjustableArrowCap(pen.Width + 2f, pen.Width + 3f, isFilled: true);
}
else if (smartLabelsStyle.CalloutLineAnchorCap == LineAnchorCap.Diamond)
{
pen.StartCap = LineCap.DiamondAnchor;
}
else if (smartLabelsStyle.CalloutLineAnchorCap == LineAnchorCap.Round)
{
pen.StartCap = LineCap.RoundAnchor;
}
else if (smartLabelsStyle.CalloutLineAnchorCap == LineAnchorCap.Square)
{
pen.StartCap = LineCap.SquareAnchor;
}
PointF absolutePoint2 = graph.GetAbsolutePoint(markerPosition);
graph.DrawLine(pen, absolutePoint2.X, absolutePoint2.Y, absolutePoint.X, absolutePoint.Y);
}