Dwindlw Fibonacci layout for Workspacer

workspacer.config.csx

#r "C:\Program Files\workspacer\workspacer.Shared.dll"
#r "C:\Program Files\workspacer\plugins\workspacer.Bar\workspacer.Bar.dll"
#r "C:\Program Files\workspacer\plugins\workspacer.ActionMenu\workspacer.ActionMenu.dll"
#r "C:\Program Files\workspacer\plugins\workspacer.FocusIndicator\workspacer.FocusIndicator.dll"       

using System;
using workspacer;
using workspacer.Bar;
using workspacer.ActionMenu;
using workspacer.FocusIndicator;

using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static workspacer.ILayoutEngine;

public static class Orientation
{
    public const bool Horizontal = true;
    public const bool Vertical   = false;
}

public class DwindleLayoutEngine : ILayoutEngine
{
    private readonly int _numInPrimary;
    private readonly double _primaryPercent;
    private readonly double _primaryPercentIncrement;

    private int _numInPrimaryOffset = 0;
    private double _primaryPercentOffset = 0;

    public DwindleLayoutEngine() : this(1, 0.5, 0.03) { }

    public DwindleLayoutEngine(int numInPrimary, double primaryPercent, double primaryPercentIncrement)
    {
        _numInPrimary = numInPrimary;
        _primaryPercent = primaryPercent;
        _primaryPercentIncrement = primaryPercentIncrement;
    }

    public string Name => "dwindle";


    public IEnumerable<IWindowLocation> CalcLayout(IEnumerable<IWindow> windows, int spaceWidth, int spaceHeight)   
    {
        var list = new List<IWindowLocation>();
        var numWindows = windows.Count();

        if (numWindows == 0)
            return list;

        int numInPrimary = Math.Min(GetNumInPrimary(), numWindows);

        int primaryWidth = (int)(spaceWidth * (_primaryPercent + _primaryPercentOffset));
        int primaryHeight = spaceHeight / numInPrimary;
        int height = spaceHeight / Math.Max(numWindows - numInPrimary, 1);

        // if there are more "primary" windows than actual windows,
        // then we want the pane to actually spread the entire width
        // of the working area
        if (numInPrimary >= numWindows)
        {
            primaryWidth = spaceWidth;
        }

        int secondaryWidth = spaceWidth - primaryWidth;

        // Recurse in a 'dwindle fibonacci' pattern
        bool curOrientation = Orientation.Vertical;
        int curWidth = secondaryWidth;
        int curTop = 0;
        int curLeft = primaryWidth;
        int curHeight = numWindows > 2 ? spaceHeight / 2 : spaceHeight;
        for (var i = 0; i < numWindows; i++)
        {
            if (i < numInPrimary)
            {
                list.Add(new WindowLocation(0, i * primaryHeight, primaryWidth, primaryHeight, WindowState.Normal));
            }
            else
            {
                list.Add(new WindowLocation(curLeft, curTop, curWidth, curHeight, WindowState.Normal));
                if(curOrientation == Orientation.Vertical) {
                    curTop += curHeight;
                    if(i<numWindows-2) {
                        curWidth /= 2;
                    }
                    curOrientation = Orientation.Horizontal;
                }
                else {
                    curLeft += curWidth;
                    if(i<numWindows-2) {
                        curHeight /= 2;
                    }
                    curOrientation = Orientation.Vertical;
                }
            }
        }        return list;    }    public void ShrinkPrimaryArea()    {        _primaryPercentOffset -= _primaryPercentIncrement;    }    public void ExpandPrimaryArea()    {        _primaryPercentOffset += _primaryPercentIncrement;    }

    public void ResetPrimaryArea()
    {
        _primaryPercentOffset = 0;
    }
    
        public void ResetPrimaryArea()
    {
        _primaryPercentOffset = 0;
    }

    public void IncrementNumInPrimary()
    {
        _numInPrimaryOffset++;
    }

    public void DecrementNumInPrimary()
    {
        if (GetNumInPrimary() > 1)
        {
            _numInPrimaryOffset--;
        }
    }

    private int GetNumInPrimary()
    {
        return _numInPrimary + _numInPrimaryOffset;
    }
}

Action<IConfigContext> doConfig = (context) =>
{
    context.AddBar();
    context.DefaultLayouts = () => new ILayoutEngine[] { new FullLayoutEngine(), new DwindleLayoutEngine() };
    context.AddFocusIndicator();
    var actionMenu = context.AddActionMenu();

    context.WorkspaceContainer.CreateWorkspaces("one", "two", "three", "four", "five");
};
return doConfig;