public void DrawExtraData(ChartControl chartSource, IDrawingContext dc)
{
var dataSource = chartSource.MainCollection;
if (dataSource == null)
{
return;
}
var items = dataSource.Items;
int iStart = dataSource.FirstVisibleItemIndex;
int count = dataSource.VisiableItemCount;
IPen pen = DrawingObjectFactory.CreatePen(Forground, 1);
var xMid = dataSource.ItemXDistance / 2;
startY = -1;
internalIndex = -1;
XRItems = null;
for (int i = iStart; i < iStart + count; i++)
{
var item = dataSource.Items[i];
if (item.ExtraData == null)
{
continue;
}
var xhHistory = item.ExtraData.Get(ExtraDataNames.XRName) as ExitRight;
if (xhHistory != null)
{
var x = dataSource.GetItemPositionX(i, ChartItemCollection.ValueName);
if (startY == -1)
{
startY = dataSource.ChartRegion.Bottom - height;
XRItems = new List <XRItem>();
}
XRItems.Add(new XRItem()
{
X = x,
Index = i,
toolTip = xhHistory.ToString()
});
x = PointSnapper.SnapValue(x + xMid);
var point1 = new Point(x, dataSource.ChartRegion.Bottom);
var point2 = new Point(x, dataSource.ChartRegion.Bottom - 2);
dc.DrawLine(pen, point1, point2);
point1 = new Point(x, dataSource.ChartRegion.Bottom - 5);
dc.DrawEllipse(Forground, null, point1, radius, radius);
}
}
}
private void DrawDenseChart(IDrawingContext dc)
{
int i = -1;
do
{
i++;
} while (i < points.Length && !IsPointValid(points[i]));
GeometryGroup groupRaise = new GeometryGroup(), groupFall = new GeometryGroup();
Point p1 = new Point(ChartItemCollection.valueNA, ChartItemCollection.valueNA);
Point p2 = new Point(ChartItemCollection.valueNA, ChartItemCollection.valueNA);
double open = ChartItemCollection.valueNA;
double close = open;
List <Point> PtList = new List <Point>();
double halfItemWidth = ItemXDistance / 2;
int iStart = i;
for (; i < points.Length; i++)
{
if (!IsPointValid(points[i]))
{
continue;
}
var x = points[i].X;
var yC = points[i].Y;
var yH = verticalLines[i].YHigh;
var yL = verticalLines[i].YLow;
var yO = verticalLines[i].YOpen;
GeometryGroup group = null;
var xMid = PointSnapper.SnapValue(x + halfItemWidth);
if (p1.X != xMid)
{
if (i != iStart)
{
if (p1.Y == p2.Y)
{
p2.Y++;
}
bool isRaise = close <= open;
if (isRaise)
{
group = groupRaise;
}
else
{
group = groupFall;
}
LineGeometry line1 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line1.Freeze();
#endif
group.Children.Add(line1);
}
open = yO;
close = yC;
p1.X = p2.X = xMid;
p1.Y = PointSnapper.SnapValue(yH);
p2.Y = PointSnapper.SnapValue(yL);
}
else
{
var YH = PointSnapper.SnapValue(yH);
if (YH < p1.Y)
{
p1.Y = YH;
}
var YL = PointSnapper.SnapValue(yL);
if (YL > p2.Y)
{
p2.Y = YL;
}
close = yC;
}
}
#if USINGCANVAS
#else
groupRaise.Freeze();
groupFall.Freeze();
#endif
dc.DrawGeometry(null, lineRaisePen, groupRaise);
dc.DrawGeometry(null, lineFallPen, groupFall);
}
private void DrawBar(IDrawingContext dc)
{
int i = -1;
do
{
i++;
} while (!IsPointValid(points[i]));
GeometryGroup groupRaise = new GeometryGroup(), groupFall = new GeometryGroup();
Point p1 = new Point();
Point p2 = new Point();
List <Point> PtList = new List <Point>();
double halfItemWidth = ItemXDistance / 2;
for (; i < points.Length; i++)
{
if (!IsPointValid(points[i]))
{
continue;
}
var x = points[i].X;
var y = points[i].Y;
GeometryGroup group = null;
bool isRaise = (Items[iStartPosition + i] as VolumnItem).IsRaise;
if (isRaise)
{
group = groupRaise;
}
else
{
group = groupFall;
}
if (ItemXDistance >= 3 && volumnItemStyle == VolumnItemStyle.Fat)
{
p1.X = PointSnapper.SnapValue(x);
p1.Y = PointSnapper.SnapValue(y);
p2.X = PointSnapper.SnapValue(x + ItemXDistance) - 1;
p2.Y = collectRect.Bottom;
RectangleGeometry rect = new RectangleGeometry()
{
Rect = new Rect(p1, p2)
};
#if USINGCANVAS
#else
rect.Freeze();
#endif
group.Children.Add(rect);
}
else
{
p1.X = p2.X = PointSnapper.SnapValue(x + halfItemWidth);
p1.Y = PointSnapper.SnapValue(y);
p2.Y = collectRect.Bottom;
LineGeometry line1 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line1.Freeze();
#endif
group.Children.Add(line1);
}
}
#if USINGCANVAS
#else
(RaisePen as DrawingPen).Freeze();
(FallPen as DrawingPen).Freeze();
groupRaise.Freeze();
groupFall.Freeze();
#endif
dc.DrawGeometry(null, RaisePen, groupRaise);
dc.DrawGeometry(FallPen.Brush, FallPen, groupFall);
}
/// <summary>
/// <see cref="ChartItemCollection.Draw(IDrawingContext)"/>
/// </summary>
public override void Draw(IDrawingContext dc)
{
if (points == null || !points.Any())
{
return;
}
if (ItemStyle == StockItemStyle.Linear)
{
base.Draw(dc);
return;
}
double halfItemWidth = ItemXDistance / 2;
if (halfItemWidth + ItemXSpan < 1)
{
DrawDenseChart(dc);
return;
}
int i = -1;
do
{
i++;
} while (i < points.Length && !IsPointValid(points[i]));
GeometryGroup groupLineRaise = new GeometryGroup(), groupLineFall = new GeometryGroup();
GeometryGroup groupRectRaise = new GeometryGroup(), groupRectFall = new GeometryGroup();
Point p1 = new Point();
Point p2 = new Point();
List <Point> PtList = new List <Point>();
for (; i < points.Length; i++)
{
if (!IsPointValid(points[i]))
{
continue;
}
var x = points[i].X;
var yC = points[i].Y;
var yH = verticalLines[i].YHigh;
var yL = verticalLines[i].YLow;
var yO = verticalLines[i].YOpen;
bool isRaise = yC <= yO;
if (yC == yO)
{
isRaise = Items[i + iStartPosition].ValueChange >= 0;
}
GeometryGroup groupLine, groupRect = null;
var xMid = PointSnapper.SnapValue(x + halfItemWidth);
if (ItemStyle == StockItemStyle.Candle)
{
if (ItemXDistance >= 3)
{
p1.X = p2.X = xMid;
p1.Y = PointSnapper.SnapValue(yH);
double yNext = 0;
if (isRaise)
{
p2.Y = PointSnapper.SnapValue(yC);
groupLine = groupLineRaise;
groupRect = groupRectRaise;
yNext = PointSnapper.SnapValue(yO);
}
else
{
p2.Y = PointSnapper.SnapValue(yO);
groupLine = groupLineFall;
groupRect = groupRectFall;
yNext = PointSnapper.SnapValue(yC);
}
if (p1.Y != p2.Y)
{
LineGeometry line1 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line1.Freeze();
#endif
groupLine.Children.Add(line1);
}
p1.X = PointSnapper.SnapValue(x);
p1.Y = p2.Y;
p2.X = PointSnapper.SnapValue(x + ItemXDistance) - 1;
p2.Y = yNext;
if (p1.Y == p2.Y)
{
LineGeometry rLine = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
rLine.Freeze();
#endif
groupLine.Children.Add(rLine);
}
else
{
RectangleGeometry rect = new RectangleGeometry()
{
Rect = new Rect(p1, p2)
};
#if USINGCANVAS
#else
rect.Freeze();
#endif
groupRect.Children.Add(rect);
}
p1.X = p2.X = xMid;
p1.Y = yNext;
p2.Y = PointSnapper.SnapValue(yL);
if (p1.Y != p2.Y)
{
LineGeometry line2 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line2.Freeze();
#endif
groupLine.Children.Add(line2);
}
}
else
{
if (isRaise)
{
groupLine = groupLineRaise;
}
else
{
groupLine = groupLineFall;
}
p1.X = p2.X = xMid;
p1.Y = PointSnapper.SnapValue(yH);
p2.Y = PointSnapper.SnapValue(yL);
if (p1.Y == p2.Y)
{
p2.Y++;
}
LineGeometry line1 = new LineGeometry
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line1.Freeze();
#endif
groupLine.Children.Add(line1);
}
}
else
{
if (isRaise)
{
groupLine = groupLineRaise;
}
else
{
groupLine = groupLineFall;
}
p1.X = p2.X = xMid;
p1.Y = PointSnapper.SnapValue(yH);
p2.Y = PointSnapper.SnapValue(yL);
if (p1.Y == p2.Y)
{
p2.Y++;
}
LineGeometry line1 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line1.Freeze();
#endif
groupLine.Children.Add(line1);
p1.X = PointSnapper.SnapValue(x);
p1.Y = p2.Y = PointSnapper.SnapValue(yO);
p2.X = xMid;
if (p1.X != p2.X)
{
LineGeometry line2 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line2.Freeze();
#endif
groupLine.Children.Add(line2);
}
p1.X = p2.X;
p1.Y = p2.Y = PointSnapper.SnapValue(yC);
p2.X = PointSnapper.SnapValue(x + ItemXDistance);
if (p1.X != p2.X)
{
LineGeometry line3 = new LineGeometry()
{
StartPoint = p1,
EndPoint = p2
};
#if USINGCANVAS
#else
line3.Freeze();
#endif
groupLine.Children.Add(line3);
}
}
}
#if USINGCANVAS
#else
groupLineRaise.Freeze();
groupLineFall.Freeze();
groupRectRaise.Freeze();
groupRectFall.Freeze();
#endif
dc.DrawGeometry(null, lineRaisePen, groupLineRaise);
dc.DrawGeometry(null, lineFallPen, groupLineFall);
dc.DrawGeometry(null, rectRaisePen, groupRectRaise);
dc.DrawGeometry(rectFallPen.Brush, rectFallPen, groupRectFall);
}