void DrawOrders(GraphicsWrapper g, int index, PointF drawingPoint, float itemWidth, float itemMargin,
List <Order> openingOrders, List <Order> closingOrders, DataBar orderBarData, float lastBarX)
{
// Width is same as items in real coordinates.
float actualImageHeight = _imageDown.Height / Math.Abs(g.DrawingSpaceTransformClone.Elements[3]);
float yToXScaling = Math.Abs(g.DrawingSpaceTransformClone.Elements[0] / g.DrawingSpaceTransformClone.Elements[3]);
PointF updatedImageDrawingPoint = drawingPoint;
foreach (Order order in openingOrders)
{
DrawOrder(g, ref updatedImageDrawingPoint, order, itemWidth, itemMargin, yToXScaling, orderBarData, lastBarX, true);
}
foreach (Order order in closingOrders)
{
DrawOrder(g, ref updatedImageDrawingPoint, order, itemWidth, itemMargin, yToXScaling, orderBarData, lastBarX, false);
}
}
/// <summary>
/// Create a dataDelivery bar based on quote.
/// </summary>
/// <param name="quote"></param>
/// <returns></returns>
public DataBar UpdateCurrentBar(DataBar currentBar, Quote quote)
{
if (quote.Bid.HasValue == false || quote.Ask.HasValue == false)
{
return(currentBar);
}
currentBar.Low = Math.Min(quote.Bid.Value, currentBar.Low);
currentBar.High = Math.Max(quote.Bid.Value, currentBar.High);
currentBar.Close = quote.Bid.Value;
if (quote.Volume.HasValue)
{
currentBar.Volume = quote.Volume.Value;
}
return(currentBar);
}
public DataBar?BarFromQuote(DataBar?previousBar, DateTime time, Quote quote)
{
if ((quote.IsFullySet == false && previousBar.HasValue == false) ||
(quote.Ask.HasValue == false || quote.Bid.HasValue == false))
{// We need at least previous bar if quote is not fully set.
return(null);
}
decimal open = quote.Open.HasValue ? quote.Open.Value : previousBar.Value.Close;
decimal close = quote.Bid.Value;
DataBar result = new DataBar(time,
open,
Math.Max(open, close),
Math.Min(open, close),
close,
0);
return(result);
}
/// <summary>
/// Enter locked.
/// </summary>
void DrawBar(GraphicsWrapper g, ref PointF startingPoint, DataBar barData, float itemWidth, float itemMargin, int itemUnitification)
{
float xMiddle = startingPoint.X + itemWidth / 2;
float xHalfWidth = itemWidth / 2;
Pen pen = _risingBarPen;
if (barData.IsRising == false)
{
pen = _fallingBarPen;
}
if (pen == null)
{
return;
}
float yDisplacement = startingPoint.Y;
g.DrawLine(pen, xMiddle, yDisplacement + (float)barData.Low, xMiddle, yDisplacement + (float)barData.High);
g.DrawLine(pen, xMiddle, yDisplacement + (float)barData.Open, xMiddle - xHalfWidth, yDisplacement + (float)barData.Open);
g.DrawLine(pen, xMiddle, yDisplacement + (float)barData.Close, xMiddle + xHalfWidth, yDisplacement + (float)barData.Close);
}
void DrawOrder(GraphicsWrapper g, ref PointF updatedImageDrawingPoint, Order order, float itemWidth, float itemMargin,
float yToXScaling, DataBar orderBarData, float lastBarX, bool drawOpening)
{
Image image = _imageUp;
Brush brush = Brushes.Green;
Pen dashedPen = _buyDashedPen;
Pen pen = Pens.GreenYellow;
if (order.IsBuy == false)
{
image = _imageDown;
brush = Brushes.Red;
pen = Pens.Red;
dashedPen = _sellDashedPen;
}
if (drawOpening == false)
{
image = _imageCross;
}
if (order.OpenPrice.HasValue == false)
{
SystemMonitor.OperationError("Order with no open price assigned for drawing.", TracerItem.PriorityEnum.Low);
return;
}
float price = (float)order.OpenPrice.Value;
if (drawOpening == false)
{
if (order.ClosePrice.HasValue == false)
{
return;
}
price = (float)order.ClosePrice.Value;
}
if (drawOpening && _showPendingOrdersTracing &&
(order is ActiveOrder && order.State == OrderStateEnum.Executed) &&
_dataProvider.Quotes.Bid.HasValue &&
_dataProvider.Quotes.Ask.HasValue)
{// Open orders tracking line.
PointF point1 = new PointF(updatedImageDrawingPoint.X + itemWidth / 2f, updatedImageDrawingPoint.Y + price);
float sellPrice = (float)_dataProvider.Quotes.Bid;
if (order.IsBuy == false)
{
sellPrice = (float)_dataProvider.Quotes.Ask;
}
PointF point2 = new PointF(lastBarX - itemWidth / 2f, updatedImageDrawingPoint.Y + sellPrice);
g.DrawLine(dashedPen, point1, point2);
}
//if (drawOpening && _showClosedOrdersTracing && order.IsOpen == false)
//{// Closed order tracking.
// Close order tracing is implemented in main draw function.
//}
if (_showOrderSpot)
{
PointF basePoint = new PointF(updatedImageDrawingPoint.X, updatedImageDrawingPoint.Y + price);
float height = (yToXScaling * itemWidth);
if (order.IsBuy == false)
{
height = -height;
}
if (drawOpening)
{
g.FillPolygon(brush, new PointF[] { basePoint, new PointF(basePoint.X + itemWidth, basePoint.Y),
new PointF(basePoint.X + (itemWidth / 2f), basePoint.Y + height) });
g.DrawPolygon(Pens.White, new PointF[] { basePoint, new PointF(basePoint.X + itemWidth, basePoint.Y),
new PointF(basePoint.X + (itemWidth / 2f), basePoint.Y + height) });
float drawToLeft = (float)(1.5 * itemWidth);
float drawToRight = (float)(2.5 * itemWidth);
// Take profit level.
if (order.TakeProfit.HasValue &&
order.TakeProfit.Value != 0)
{
g.DrawLine(pen, updatedImageDrawingPoint.X - drawToLeft, updatedImageDrawingPoint.Y + (float)order.TakeProfit,
updatedImageDrawingPoint.X + drawToRight, updatedImageDrawingPoint.Y + (float)order.TakeProfit);
g.DrawLine(pen, updatedImageDrawingPoint.X + itemWidth / 2f, updatedImageDrawingPoint.Y + (float)order.TakeProfit,
updatedImageDrawingPoint.X + itemWidth / 2f, updatedImageDrawingPoint.Y + (float)order.TakeProfit - height);
}
// Stop loss level.
if (order.StopLoss.HasValue &&
order.StopLoss.Value != 0)
{
g.DrawLine(pen, updatedImageDrawingPoint.X - drawToLeft, updatedImageDrawingPoint.Y + (float)order.StopLoss,
updatedImageDrawingPoint.X + drawToRight, updatedImageDrawingPoint.Y + (float)order.StopLoss);
g.DrawLine(pen, updatedImageDrawingPoint.X + itemWidth / 2f, updatedImageDrawingPoint.Y + (float)order.StopLoss,
updatedImageDrawingPoint.X + itemWidth / 2f, updatedImageDrawingPoint.Y + (float)order.StopLoss + height);
}
}
else
{
g.DrawRectangle(Pens.White, basePoint.X, basePoint.Y,
itemWidth, yToXScaling * itemWidth);
}
}
float imageHeight = 2 * (yToXScaling * itemWidth);
if (_showOrderArrow)
{
float x = updatedImageDrawingPoint.X - (itemWidth / 2f);
float y = updatedImageDrawingPoint.Y + (float)orderBarData.Low - (yToXScaling * itemWidth);
float width = 2 * itemWidth;
float height = -imageHeight;
GraphicsWrapper.NormalizedRectangle(ref x, ref y, ref width, ref height);
RectangleF rectange = new RectangleF(x, y, width, height);
// Draw up image.
g.DrawImage(image, rectange.X, rectange.Y, rectange.Width, rectange.Height);
if (order == _selectedOrder)
{// This is selected order.
g.DrawRectangle(Pens.White, rectange);
}
_ordersArrows[order] = rectange;
updatedImageDrawingPoint.Y -= 1.2f * imageHeight;
}
}
/// <summary>
/// Enter locked.
/// </summary>
void DrawCandleStick(GraphicsWrapper g, ref PointF startingPoint, DataBar barData, float itemWidth, float itemMargin, int itemUnitification)
{
if (barData.IsRising)
{
if (_risingBarFill != null)
{
g.FillRectangle(_risingBarFill, startingPoint.X, startingPoint.Y + (float)barData.Open, itemWidth, (float)barData.AbsoluteBodyHeight);
}
if (_risingBarPen != null)
{
if (itemWidth > 4)
{
g.DrawRectangle(_risingBarPen, startingPoint.X, startingPoint.Y + (float)barData.Open, itemWidth, (float)barData.AbsoluteBodyHeight);
}
else
{
g.FillRectangle(Brushes.Green, startingPoint.X, startingPoint.Y + (float)barData.Open, itemWidth, (float)barData.AbsoluteBodyHeight);
}
// Draw a horizontal line for 0 height bars.
if (barData.AbsoluteBodyHeight == 0)
{
g.DrawLine(_fallingBarPen, startingPoint.X, startingPoint.Y + (float)barData.Close, startingPoint.X + itemWidth, startingPoint.Y + (float)barData.Close);
}
// Lower shadow
g.DrawLine(_risingBarPen,
startingPoint.X + itemWidth / 2,
startingPoint.Y + (float)barData.Low,
startingPoint.X + itemWidth / 2,
startingPoint.Y + (float)barData.Open);
// Upper shadow
g.DrawLine(_risingBarPen,
startingPoint.X + itemWidth / 2,
(float)(startingPoint.Y + (float)barData.High),
startingPoint.X + itemWidth / 2,
(float)(startingPoint.Y + (float)barData.Close));
}
}
else
{
if (_fallingBarFill != null)
{
g.FillRectangle(_fallingBarFill, startingPoint.X, startingPoint.Y + (float)barData.Close, itemWidth, (float)barData.AbsoluteBodyHeight);
}
if (_fallingBarPen != null)
{
if (itemWidth >= 4)
{// Only if an item is clearly visible, show the border, otherwise, hide to improve. overal visibility.
// Showing this border adds nice detail on close zooming, but not useful otherwise.
g.DrawRectangle(_fallingBarPen, startingPoint.X, startingPoint.Y + (float)barData.Close, itemWidth, (float)barData.AbsoluteBodyHeight);
}
// Draw a horizontal line for 0 height bars.
if (barData.AbsoluteBodyHeight == 0)
{
g.DrawLine(_fallingBarPen, startingPoint.X, startingPoint.Y + (float)barData.Close, startingPoint.X + itemWidth, startingPoint.Y + (float)barData.Close);
}
// Lower shadow
g.DrawLine(_fallingBarPen,
startingPoint.X + itemWidth / 2,
startingPoint.Y + (float)barData.Low,
startingPoint.X + itemWidth / 2,
startingPoint.Y + (float)barData.Close);
// Upper shadow
g.DrawLine(_fallingBarPen,
startingPoint.X + itemWidth / 2,
(float)(startingPoint.Y + (float)barData.High),
startingPoint.X + itemWidth / 2,
(float)(startingPoint.Y + (float)barData.Open));
}
}
}
/// <summary>
/// Drawing routine, invoke from child class to draw dataDelivery bars in common uniform way.
/// </summary>
/// <param name="g"></param>
/// <param name="unitsUnification">Draw a few units as one. Used when zooming is too big to show each unit - so unify them. 1 means no unification, 10 means unify 10 units together</param>
/// <param name="clippingRectangle"></param>
/// <param name="itemWidth"></param>
/// <param name="itemMargin"></param>
public void Draw(GraphicsWrapper g, ReadOnlyCollection <DataBar> dataBars,
int unitsUnification, RectangleF clippingRectangle, float itemWidth, float itemMargin, float maxVolume, object tag)
{
if (Visible == false)
{
return;
}
PointF drawingPoint = new PointF();
lock (this)
{
if (_chartType == ChartTypeEnum.Line)
{
base.DrawItemSet(LinesChartSeries.ChartTypeEnum.Line,
g, _risingBarPen, null, unitsUnification, clippingRectangle, itemWidth, itemMargin, null);
}
else if (_chartType == ChartTypeEnum.Histogram)
{
base.DrawItemSet(LinesChartSeries.ChartTypeEnum.Histogram,
g, _risingBarPen, _risingBarFill, unitsUnification, clippingRectangle, itemWidth, itemMargin, tag);
}
else if (_chartType == ChartTypeEnum.ColoredArea)
{
base.DrawItemSet(LinesChartSeries.ChartTypeEnum.ColoredArea,
g, _risingBarPen, _risingBarFill, unitsUnification, clippingRectangle, itemWidth, itemMargin, tag);
}
else if (_chartType == ChartTypeEnum.CandleStick || _chartType == ChartTypeEnum.BarChart)
{// Unit unification is done trough combining many bars together.
List <DataBar> combinationDatas = new List <DataBar>();
bool timeGapFound = false;
int startIndex, endIndex;
GetDrawingRangeIndecesFromClippingRectange(clippingRectangle, drawingPoint, unitsUnification, out startIndex, out endIndex, itemWidth, itemMargin);
float volumeDisplayRange = clippingRectangle.Height / 4f;
decimal volumeDisplayMultiplicator = 0;
if (maxVolume > 0)
{
volumeDisplayMultiplicator = (decimal)(volumeDisplayRange / maxVolume);
}
for (int i = startIndex; i < endIndex && i < dataBars.Count; i++)
{
combinationDatas.Add(dataBars[i]);
if (unitsUnification == 1 && ShowTimeGaps && i > 0 && dataBars[i].DateTime - dataBars[i - 1].DateTime != _period)
{
timeGapFound = true;
}
if (i % unitsUnification == 0)
{
DataBar combinedData = DataBar.CombinedBar(combinationDatas.ToArray());
combinationDatas.Clear();
if (combinedData.HasDataValues)
//&& drawingPoint.X >= clippingRectangle.X
//&& drawingPoint.X <= clippingRectangle.X + clippingRectangle.Width)
{
if (timeGapFound && ShowTimeGaps && _timeGapsLinePen != null)
{// Draw time gap.
timeGapFound = false;
g.DrawLine(_timeGapsLinePen, new PointF(drawingPoint.X, clippingRectangle.Y), new PointF(drawingPoint.X, clippingRectangle.Y + clippingRectangle.Height));
//g.DrawLine(_timeGapsLinePen, new PointF(drawingPoint.X, clippingRectangle.Y), new PointF(drawingPoint.X, (float)(dataDelivery.High)));
//g.DrawLine(_timeGapsLinePen, new PointF(drawingPoint.X, (float)(dataDelivery.High + dataDelivery.BarTotalLength / 2f)), new PointF(drawingPoint.X, clippingRectangle.Y + clippingRectangle.Height));
}
if (_chartType == ChartTypeEnum.CandleStick)
{
DrawCandleStick(g, ref drawingPoint, combinedData, itemWidth, itemMargin, unitsUnification);
}
else
{
DrawBar(g, ref drawingPoint, combinedData, itemWidth, itemMargin, unitsUnification);
}
// Draw closeVolume for this bar.
if (_showVolume)
{
float actualHeight = (float)(combinedData.Volume * volumeDisplayMultiplicator);
g.DrawLine(_volumePen, drawingPoint.X, clippingRectangle.Y, drawingPoint.X, clippingRectangle.Y + actualHeight);
}
}
drawingPoint.X = (i + 1) * (itemMargin + itemWidth);
}
}
}
}
}
