Layout.cs

using SkiaSharp;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Xml;
using Waher.Script;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Exceptions;
using Waher.Script.Graphs;
using Waher.Script.Model;
 
namespace Waher.Layout.Layout2D.Functions
{
    public class Layout : FunctionOneVariable
    {
        public Layout(ScriptNode Xml, int Start, int Length, Expression Expression)
            : base(Xml, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(Layout);
 
        public override string[] DefaultArgumentNames => new string[] { "XML" };
 
        public override bool IsAsynchronous => base.IsAsynchronous;
 
        public override IElement Evaluate(IElement Argument, Variables Variables)
        {
            return this.EvaluateAsync(Argument, Variables).Result;
        }
 
        public override async Task<IElement> EvaluateAsync(IElement Argument, Variables Variables)
        {
            object Obj = Argument.AssociatedObjectValue;
 
            if (Obj is string s)
                return await FromLayout(s, Variables);
            else if (Obj is XmlDocument XmlDoc)
                return await FromLayout(XmlDoc, Variables);
            else if (Obj is XmlElement E)
                return await FromLayout(E, Variables);
            else if (Obj is Layout2DDocument Doc)
                return await FromLayout(Doc, Variables);
            else
                throw new ScriptRuntimeException("Expected an XML argument.", this);
        }
 
 
        public static async Task<GraphBitmap> FromLayout(string Xml, Variables Variables)
        {
            Layout2DDocument Doc = await Layout2DDocument.FromXml(Xml, true, Variables);
            return await FromLayout(Doc, Variables);
        }
 
        public static async Task<GraphBitmap> FromLayout(XmlElement Xml, Variables Variables)
        {
            Layout2DDocument Doc = await Layout2DDocument.FromXml(Xml, Variables);
            return await FromLayout(Doc, Variables);
        }
 
        public static async Task<GraphBitmap> FromLayout(XmlDocument Xml, Variables Variables)
        {
            Layout2DDocument Doc = await Layout2DDocument.FromXml(Xml, Variables);
            return await FromLayout(Doc, Variables);
        }
 
        public static async Task<GraphBitmap> FromLayout(Layout2DDocument Doc, Variables Variables)
        {
            RenderSettings Settings = await Doc.GetRenderSettings(Variables);
            KeyValuePair<SKImage, Map[]> P = await Doc.Render(Settings);
 
            PixelInformation Pixels = PixelInformation.FromImage(P.Key);
            GraphBitmap Result = new GraphBitmap(Variables, Pixels);
 
            return Result;
        }
 
    }
}