/// <summary>
/// Set the style of a graph node
/// </summary>
/// <param name="node">the microsoft drawing node</param>
/// <param name="nodeTitle">the node title</param>
/// <param name="flowId">the flow id</param>
private static void SetNodeStyle(Microsoft.Msagl.Drawing.Node node, string nodeTitle, int flowId)
{
var backgroundColor = GetNodeColor(nodeTitle, flowId);
var backgroundHex = MaterialDesignColors.MsaglColorToHex(backgroundColor);
var foregroundHex = MaterialDesignColors.GetForegroundColor(backgroundHex);
var foregroundColor = MaterialDesignColors.MsaglColorFromHex(foregroundHex);
node.Attr.FillColor = backgroundColor;
node.Attr.Shape = Microsoft.Msagl.Drawing.Shape.Box;
node.Attr.Color = MaterialDesignColors.MsaglColorFromHex(MaterialDesignColors.White);
node.Label.FontColor = foregroundColor;
node.Label.FontSize = 10;
}
/// <summary>
/// Returns the color for a use case item
/// </summary>
/// <param name="nodeTitle">The node title</param>
/// <param name="flowId">The flow id</param>
/// <returns>The microsoft algorithm drawing color</returns>
private static Microsoft.Msagl.Drawing.Color GetNodeColor(string nodeTitle, int flowId)
{
// if the node color exists
for (int i = 0; i < nodeColors.Count; i++)
{
if (nodeColors[i].Item1.Equals(nodeTitle))
{
// return it
return(nodeColors[i].Item2);
}
}
// if the node doens´t exists, generate a new color
var colorHex = FlowPaletteGetNextColor(flowId);
var color = MaterialDesignColors.MsaglColorFromHex(colorHex);
var nodeColor = new Tuple <string, Microsoft.Msagl.Drawing.Color>(nodeTitle, color);
nodeColors.Add(nodeColor);
return(nodeColor.Item2);
}