void DrawHistogramBar(GraphicsWrapper g, ref PointF drawingPoint, Pen pen, Brush fill,
int index, int previousItemIndex, float itemWidth, float itemMargin, int unitsUnification, object tag)
{
float y = drawingPoint.Y;
float height = 0;
if (unitsUnification > 1)
{
double heightSum = 0;
int actualSumCount = 0;
for (int i = previousItemIndex; i <= index; i++)
{
float value = GetDrawingValueAt(i, tag);
if (float.IsNaN(value) ||
float.IsInfinity(value))
{
continue;
}
heightSum += value;
actualSumCount++;
}
if (actualSumCount == 0)
{
return;
}
height = (float)(heightSum / actualSumCount);
}
else
{
height = GetDrawingValueAt(index, tag);
}
if (height < 0)
{
y += height;
height = -height;
}
if (fill != null)
{
g.FillRectangle(fill, drawingPoint.X, y, (itemWidth) * unitsUnification, height);
}
}
protected void DrawIcon(GraphicsWrapper g, Pen pen, Brush fill, Rectangle rectangle)
{
if (Visible == false)
{
return;
}
if (fill != null)
{
g.FillRectangle(fill, rectangle);
}
if (pen != null)
{
g.DrawRectangle(pen, rectangle);
}
}
/// <summary>
/// Override this routine, to add the price labels at the space outside of the current drawing pane.
/// </summary>
/// <param name="managingPane"></param>
/// <param name="g"></param>
public override void DrawInitialActualSpaceOverlays(ChartPane managingPane, GraphicsWrapper g)
{
base.DrawInitialActualSpaceOverlays(managingPane, g);
if (_dataProvider == null || _dataProvider.OperationalState != OperationalStateEnum.Operational)
{
return;
}
decimal? ask = _dataProvider.Quotes.Ask;
decimal? bid = _dataProvider.Quotes.Bid;
if (ask.HasValue == false
|| bid.HasValue == false)
{
return;
}
// Measure based on a default format of 6 symbols.
SizeF size = g.MeasureString("00.0000", managingPane.LabelsFont);
Brush fillBrush = managingPane.LabelsFill;
if (fillBrush == null)
{
fillBrush = managingPane.ActualDrawingSpaceAreaFill;
}
if (_showCurrentAskLine)
{
PointF position = managingPane.GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(0, (float)_dataProvider.Quotes.Ask), true);
position.X = managingPane.Width - managingPane.ActualDrawingSpaceAreaMarginRight;
position.Y -= size.Height;
if (fillBrush != null)
{
g.FillRectangle(fillBrush, new RectangleF(position.X, position.Y, size.Width, size.Height));
}
if (managingPane.LabelsFont != null && managingPane.LabelsFontBrush != null)
{
g.DrawString(ask.Value.ToString(_dataProvider.SessionInfo.ValueFormat), managingPane.LabelsFont, managingPane.LabelsFontBrush, position);
g.DrawRectangle(managingPane.ActualDrawingSpaceAreaBorderPen, new RectangleF(position.X, position.Y, size.Width/* - 2*/, size.Height));
}
}
if (_showCurrentBidLine)
{
PointF position = managingPane.GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(0, (float)_dataProvider.Quotes.Bid), true);
position.X = managingPane.Width - managingPane.ActualDrawingSpaceAreaMarginRight;
if (fillBrush != null)
{
g.FillRectangle(fillBrush, new RectangleF(position.X, position.Y, size.Width, size.Height));
}
if (managingPane.LabelsFont != null && managingPane.LabelsFontBrush != null)
{
g.DrawString(bid.Value.ToString(_dataProvider.SessionInfo.ValueFormat), managingPane.LabelsFont, managingPane.LabelsFontBrush, position);
g.DrawRectangle(managingPane.ActualDrawingSpaceAreaBorderPen, new RectangleF(position.X, position.Y, size.Width/* - 2*/, size.Height));
}
}
}
/// <summary>
/// Override this routine, to add the price labels at the space outside of the current drawing pane.
/// </summary>
/// <param name="managingPane"></param>
/// <param name="g"></param>
public override void DrawInitialActualSpaceOverlays(ChartPane managingPane, GraphicsWrapper g)
{
base.DrawInitialActualSpaceOverlays(managingPane, g);
if (_dataProvider == null || _dataProvider.OperationalState != OperationalStateEnum.Operational)
{
return;
}
decimal?ask = _dataProvider.Quotes.Ask;
decimal?bid = _dataProvider.Quotes.Bid;
if (ask.HasValue == false ||
bid.HasValue == false)
{
return;
}
// Measure based on a default format of 6 symbols.
SizeF size = g.MeasureString("00.0000", managingPane.LabelsFont);
Brush fillBrush = managingPane.LabelsFill;
if (fillBrush == null)
{
fillBrush = managingPane.ActualDrawingSpaceAreaFill;
}
if (_showCurrentAskLine)
{
PointF position = managingPane.GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(0, (float)_dataProvider.Quotes.Ask), true);
position.X = managingPane.Width - managingPane.ActualDrawingSpaceAreaMarginRight;
position.Y -= size.Height;
if (fillBrush != null)
{
g.FillRectangle(fillBrush, new RectangleF(position.X, position.Y, size.Width, size.Height));
}
if (managingPane.LabelsFont != null && managingPane.LabelsFontBrush != null)
{
g.DrawString(ask.Value.ToString(_dataProvider.SessionInfo.ValueFormat), managingPane.LabelsFont, managingPane.LabelsFontBrush, position);
g.DrawRectangle(managingPane.ActualDrawingSpaceAreaBorderPen, new RectangleF(position.X, position.Y, size.Width /* - 2*/, size.Height));
}
}
if (_showCurrentBidLine)
{
PointF position = managingPane.GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(0, (float)_dataProvider.Quotes.Bid), true);
position.X = managingPane.Width - managingPane.ActualDrawingSpaceAreaMarginRight;
if (fillBrush != null)
{
g.FillRectangle(fillBrush, new RectangleF(position.X, position.Y, size.Width, size.Height));
}
if (managingPane.LabelsFont != null && managingPane.LabelsFontBrush != null)
{
g.DrawString(bid.Value.ToString(_dataProvider.SessionInfo.ValueFormat), managingPane.LabelsFont, managingPane.LabelsFontBrush, position);
g.DrawRectangle(managingPane.ActualDrawingSpaceAreaBorderPen, new RectangleF(position.X, position.Y, size.Width /* - 2*/, size.Height));
}
}
}
void DrawHistogramBar(GraphicsWrapper g, ref PointF drawingPoint, Pen pen, Brush fill,
int index, int previousItemIndex, float itemWidth, float itemMargin, int unitsUnification, object tag)
{
float y = drawingPoint.Y;
float height = 0;
if (unitsUnification > 1)
{
double heightSum = 0;
int actualSumCount = 0;
for (int i = previousItemIndex; i <= index; i++)
{
float value = GetDrawingValueAt(i, tag);
if (float.IsNaN(value)
|| float.IsInfinity(value))
{
continue;
}
heightSum += value;
actualSumCount++;
}
if (actualSumCount == 0)
{
return;
}
height = (float)(heightSum / actualSumCount);
}
else
{
height = GetDrawingValueAt(index, tag);
}
if (height < 0)
{
y += height;
height = -height;
}
if (fill != null)
{
g.FillRectangle(fill, drawingPoint.X, y, (itemWidth) * unitsUnification, height);
}
}
protected void DrawIcon(GraphicsWrapper g, Pen pen, Brush fill, Rectangle rectangle)
{
if (Visible == false)
{
return;
}
if (fill != null)
{
g.FillRectangle(fill, rectangle);
}
if (pen != null)
{
g.DrawRectangle(pen, rectangle);
}
}
void DrawSelection(GraphicsWrapper g)
{
if (CurrentSelectionRectangle.HasValue == false)
{
return;
}
RectangleF selectionRectangle = CurrentSelectionRectangle.Value;
if (selectionRectangle.Width > 0 && selectionRectangle.Height > 0 &&
_lastDrawingSpaceMouseRightButtonPosition.HasValue && _currentDrawingSpaceMousePosition.HasValue)
{
if (_selectionPen != null)
{
g.DrawRectangle(_selectionPen, selectionRectangle.X, selectionRectangle.Y, selectionRectangle.Width, selectionRectangle.Height);
}
if (_selectionFill != null)
{
g.FillRectangle(_selectionFill, selectionRectangle);
}
}
}
protected virtual void DrawGraphicSeriesLabels(GraphicsWrapper g, int initialMarginLeft)
{
_currentLabelsRectangles = new Rectangle[_series.Count];
for (int i = 0; i < _series.Count; i++)
{
if (i == 0)
{
_currentLabelsRectangles[0].X = initialMarginLeft;
}
else
{
_currentLabelsRectangles[i].X = _currentLabelsRectangles[i - 1].Right + (int)_labelsMargin;
}
_currentLabelsRectangles[i].Y = (int)_labelsTopMargin;
SizeF seriesSize = g.MeasureString(_series[i].Name, _labelsFont);
_currentLabelsRectangles[i].Size = new Size((int)seriesSize.Width, (int)seriesSize.Height);
int iconWidth = 18;
// Add space for series icon
_currentLabelsRectangles[i].Width += iconWidth;
if (_labelsFill != null)
{
g.FillRectangle(_labelsFill, _currentLabelsRectangles[i]);
}
if (_labelsFont != null)
{
g.DrawString(_series[i].Name, _labelsFont, _labelsFontBrush, _currentLabelsRectangles[i].X + iconWidth, _currentLabelsRectangles[i].Y);
}
_series[i].DrawSeriesIcon(g, new Rectangle(_currentLabelsRectangles[i].X + 2, _currentLabelsRectangles[i].Y + 2, 14, _currentLabelsRectangles[i].Height - 4));
}
}
/// <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>
/// 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));
}
}
}
