protected virtual Bitmap PaintSankey(SankeyDiagramHostControl sankey, int?dpi = null)
{
if (dpi == null || dpi == 0)
{
dpi = DefaultDPI;
}
float scaleBitmap = dpi.Value / 300f;
float scaleSVG = 1f;
using var streamSvg = new MemoryStream();
sankey.ExportToSvg(streamSvg);
streamSvg.Seek(0, SeekOrigin.Begin);
var doc = SvgDocument.Open <SvgDocument>(streamSvg);
doc.ShapeRendering = SvgShapeRendering.GeometricPrecision;
streamSvg.Close();
var bitmap = new Bitmap((int)Math.Ceiling(sankey.Width * scaleBitmap), (int)Math.Ceiling(sankey.Height * scaleBitmap));
bitmap.SetResolution(dpi.Value, dpi.Value);
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
graphics.Clear(Color.White);
var renderer = SvgRenderer.FromGraphics(graphics);
renderer.SmoothingMode = SmoothingMode.HighQuality;
if (scaleSVG != 1f && scaleSVG > 0f)
{
renderer.ScaleTransform(1 / scaleSVG, 1 / scaleSVG);
}
doc.Draw(renderer);
}
return(bitmap);
}
protected virtual void InitializeSankey()
{
var dataSource = GetDataSource(_DataSource,
new DataSourceParameters()
{
IgnoreErrors = _Options.IgnoreErrors, Columns = _Options.SelectColumns, SkipColumns = _Options.SkipColumns
});
var sankey = new SankeyDiagramHostControl()
{
Width = _Options.Width,
Height = _Options.Height,
DataSource = dataSource,
SourceDataMember = _SourceColumn,
TargetDataMember = _TargetColumn,
WeightDataMember = _Options.Weight
};
_HostControl = sankey;
sankey.ErrorMessage += (s, e) =>
{
throw new Exception($@"{e.Title}: {e.Message}");
};
if (!string.IsNullOrWhiteSpace(_Options.BackColor))
{
var backColor = Utils.ColorFromString(_Options.BackColor);
if (backColor != Color.Empty)
{
sankey.BackColor = backColor;
}
}
if (!string.IsNullOrWhiteSpace(_Options.NodeFont))
{
var font = Utils.StringToFont(_Options.NodeFont, out _);
if (font != null)
{
sankey.NodeLabel.Font = font;
}
}
if (_Options.NodeMaxWidth.HasValue)
{
sankey.NodeLabel.MaxWidth = _Options.NodeMaxWidth.Value;
}
if (_Options.NodeMaxLineCount.HasValue)
{
sankey.NodeLabel.MaxLineCount = _Options.NodeMaxLineCount.Value;
}
if (_Options.NodeTextAlignment.HasValue)
{
sankey.NodeLabel.TextAlignment = _Options.NodeTextAlignment.Value;
}
if (_Options.NodeTextOrientation.HasValue)
{
sankey.NodeLabel.TextOrientation = (DevExpress.XtraCharts.TextOrientation)_Options.NodeTextOrientation.Value;
}
if (!string.IsNullOrWhiteSpace(_Options.BorderColor))
{
var color = Utils.ColorFromString(_Options.BorderColor);
if (color != Color.Empty)
{
sankey.BorderOptions.Color = color;
}
}
if (_Options.BorderThickness.HasValue)
{
sankey.BorderOptions.Thickness = _Options.BorderThickness.Value;
}
if (_Options.NodeWidth.HasValue)
{
sankey.ViewOptions.NodeWidth = _Options.NodeWidth.Value;
}
if (_Options.VerticalNodeAlignment.HasValue)
{
sankey.ViewOptions.VerticalNodeIndent = _Options.VerticalNodeAlignment.Value;
}
if (_Options.LinkTransparency.HasValue)
{
sankey.ViewOptions.LinkTransparency = _Options.LinkTransparency.Value;
}
if (_Options.Padding != null && _Options.Padding.Length == 1)
{
sankey.Padding.All = _Options.Padding[0];
}
else if (_Options.Padding != null && _Options.Padding.Length == 4)
{
sankey.Padding.Left = _Options.Padding[0];
sankey.Padding.Top = _Options.Padding[1];
sankey.Padding.Right = _Options.Padding[2];
sankey.Padding.Bottom = _Options.Padding[3];
}
else if (_Options.Padding != null)
{
throw new Exception("Invalid padding. Padding shall be an array with 1 or 4 integer values.");
}
if (!string.IsNullOrWhiteSpace(_Options.EmptyText))
{
sankey.EmptySankeyText.Text = _Options.EmptyText;
}
if (!string.IsNullOrWhiteSpace(_Options.EmptyTextFont))
{
var font = Utils.StringToFont(_Options.EmptyTextFont, out Color color);
if (font != null)
{
sankey.EmptySankeyText.Font = font;
}
if (color != Color.Empty)
{
sankey.EmptySankeyText.TextColor = color;
}
}
if (_Options.EmptyTextAlignment.HasValue)
{
sankey.EmptySankeyText.TextAlignment = _Options.EmptyTextAlignment.Value;
}
if (!string.IsNullOrWhiteSpace(_Options.SmallText))
{
sankey.SmallSankeyText.Text = _Options.SmallText;
}
if (!string.IsNullOrWhiteSpace(_Options.SmallTextFont))
{
var font = Utils.StringToFont(_Options.SmallTextFont, out Color color);
if (font != null)
{
sankey.SmallSankeyText.Font = font;
}
if (color != Color.Empty)
{
sankey.SmallSankeyText.TextColor = color;
}
}
if (_Options.SmallTextAlignment.HasValue)
{
sankey.SmallSankeyText.TextAlignment = _Options.SmallTextAlignment.Value;
}
var sankeyPalette = GetSankeyPalette(_Options.Palette);
sankey.Colorizer = new SankeyPaletteColorizer()
{
Palette = sankeyPalette
};
if (!string.IsNullOrWhiteSpace(_Options.TitleText))
{
var title = new SankeyTitle()
{
Text = _Options.TitleText
};
if (!string.IsNullOrWhiteSpace(_Options.TitleFont))
{
var font = Utils.StringToFont(_Options.TitleFont, out Color color);
if (font != null)
{
title.Font = font;
}
if (color != Color.Empty)
{
title.TextColor = color;
}
if (_Options.TitleAlignment.HasValue)
{
title.TextAlignment = _Options.TitleAlignment.Value;
}
if (_Options.TitleDock.HasValue)
{
title.Dock = (DevExpress.XtraCharts.Sankey.SankeyTitleDockStyle)_Options.TitleDock.Value;
}
if (_Options.TitleIndent.HasValue)
{
title.Indent = _Options.TitleIndent.Value;
}
}
sankey.Titles.Add(title);
}
if (!string.IsNullOrWhiteSpace(_Options.Title2Text))
{
var title2 = new SankeyTitle()
{
Text = _Options.Title2Text
};
if (!string.IsNullOrWhiteSpace(_Options.Title2Font))
{
var font = Utils.StringToFont(_Options.Title2Font, out Color color);
if (font != null)
{
title2.Font = font;
}
if (color != Color.Empty)
{
title2.TextColor = color;
}
if (_Options.Title2Alignment.HasValue)
{
title2.TextAlignment = _Options.Title2Alignment.Value;
}
if (_Options.Title2Dock.HasValue)
{
title2.Dock = (DevExpress.XtraCharts.Sankey.SankeyTitleDockStyle)_Options.Title2Dock.Value;
}
if (_Options.Title2Indent.HasValue)
{
title2.Indent = _Options.Title2Indent.Value;
}
}
sankey.Titles.Add(title2);
}
if (!string.IsNullOrWhiteSpace(_Options.Title3Text))
{
var title3 = new SankeyTitle()
{
Text = _Options.Title3Text
};
if (!string.IsNullOrWhiteSpace(_Options.Title3Font))
{
var font = Utils.StringToFont(_Options.Title3Font, out Color color);
if (font != null)
{
title3.Font = font;
}
if (color != Color.Empty)
{
title3.TextColor = color;
}
if (_Options.Title3Alignment.HasValue)
{
title3.TextAlignment = _Options.Title3Alignment.Value;
}
if (_Options.Title3Dock.HasValue)
{
title3.Dock = (DevExpress.XtraCharts.Sankey.SankeyTitleDockStyle)_Options.Title3Dock.Value;
}
if (_Options.Title3Indent.HasValue)
{
title3.Indent = _Options.Title3Indent.Value;
}
}
sankey.Titles.Add(title3);
}
if (_Options.SelectedNodes != null && _Options.SelectedNodes.Length > 0)
{
foreach (var selectedNode in _Options.SelectedNodes)
{
sankey.SelectedItems.Add(selectedNode);
}
}
if (!string.IsNullOrWhiteSpace(_Options.Selected))
{
var colSelected = dataSource.Columns[_Options.Selected];
if (colSelected != null)
{
var viewDataSource = dataSource.DefaultView;
if (colSelected.DataType == typeof(bool))
{
foreach (DataRowView row in viewDataSource)
{
var bSelected = Utils.ChangeType <bool>(row[colSelected.ColumnName], false);
if (bSelected)
{
sankey.SelectedItems.Add(row);
}
}
}
else if (Utils.IsTypeNumeric(colSelected.DataType))
{
foreach (DataRowView row in viewDataSource)
{
var dSelected = Utils.ChangeType <double>(row[colSelected.ColumnName], 0.0);
if (dSelected != 0.0)
{
sankey.SelectedItems.Add(row);
}
}
}
else if (colSelected.DataType == typeof(string) || colSelected.DataType == typeof(char))
{
foreach (DataRowView row in viewDataSource)
{
var cSelected = Utils.ChangeType <string>(row[colSelected.ColumnName], null);
if (string.Compare(cSelected, "true", true) == 0 || string.Compare(cSelected, "yes", true) == 0 ||
string.Compare(cSelected, "y", true) == 0)
{
sankey.SelectedItems.Add(row);
}
}
}
}
}
}