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 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)); } } }