using Newtonsoft.Json;
using System;
using System.Drawing;
using System.Drawing.Drawing2D;

namespace _2DGAMELIB
{
    // renders text
    [Serializable]
    public class ParT : Par
    {
    	[NonSerialized, JsonIgnore]
    	private Font font = new Font("", 1f);

    	private double fontSize = 1.0;

    	private bool EditF = true;

    	[NonSerialized, JsonIgnore]
    	private Brush brusht = new SolidBrush(Color.Black);

        //unused
    	private const double Shift = 1.0;

    	[NonSerialized, JsonIgnore]
    	private Brush brushs;

    	[NonSerialized, JsonIgnore]
    	private StringFormat stringformat = new StringFormat();

    	private Vector2D positionT = Dat.Vec2DZero;

    	private Vector2D rectSize = Dat.Vec2DOne;

    	public string Text = "";

    	private RectangleF rect;

    	private double us;

    	private double usx;

    	private double usy;

    	private Vector2D bp;

    	private Vector2D p;

    	private Vector2D v;

    	private double a0;

    	private double a1;

    	private double M11;

    	private double M12;

    	private float af;

    	private float xf;

    	private float yf;

    	private bool EditT = true;

    	private bool EditTS = true;

    	private CharacterRange[] crr = new CharacterRange[1];

    	public Font Font
    	{
    		get { return font; }
    		set
    		{
    			if (font != value && font != null)
    			{
    				font.Dispose();
    			}
    			font = value;
    			EditF = true;
    		}
    	}

    	public double FontSize
    	{
    		get { return fontSize; }
    		set
    		{
    			fontSize = value;
    			EditF = true;
    		}
    	}

    	public Brush TextBrush
    	{
    		get { return brusht; }
    		set
    		{
    			if (brusht != value && brusht != null)
    			{
    				brusht.Dispose();
    			}
    			brusht = value;
    		}
    	}

    	public Color TextColor
    	{
    		get { return ((SolidBrush)brusht).Color; }
    		set { ((SolidBrush)brusht).Color = value; }
    	}

    	public Brush ShadBrush
    	{
    		get { return brushs; }
    		set
    		{
    			if (brushs != value && brushs != null)    			
    				brushs.Dispose();

    			brushs = value;
    		}
    	}

    	public Color ShadColor
    	{
    		get { return ((SolidBrush)brushs).Color; }
    		set { ((SolidBrush)brushs).Color = value; }
    	}

    	public StringFormat StringFormat
    	{
    		get { return stringformat; }
    		set
    		{
    			if (stringformat != value && stringformat != null)
    			{
    				stringformat.Dispose();
    			}
    			stringformat = value;
    		}
    	}

    	public Vector2D RectSize
    	{
    		get { return rectSize; }
    		set
    		{
    			rectSize = value;
    			EditT = true;
    		}
    	}

    	public new void SetDefault()
    	{
            base.SetDefault();

            if (font != null)
                font.Dispose();

            if (brusht != null)
                brusht.Dispose();

            if (brushs != null)
                brushs.Dispose();

            if (stringformat != null)
                stringformat.Dispose();

            font = new Font("", 1f);
            brusht = new SolidBrush(Color.Black);
            brushs = null;
            stringformat = new StringFormat();

            EditF = true;
            EditT = true;
            EditTS = true;
        }

    	public ParT()
    	{
    	}

    	public ParT(ParT ParT)
    	{
    		CopyT(ParT);
    	}

    	private void CopyT(ParT ParT)
    	{
    		Copy(ParT);

    		fontSize = ParT.fontSize;

    		if (ParT.font != null)
    			Font = ParT.font.Copy();

    		if (ParT.brusht != null)
    			TextBrush = ParT.brusht.Copy();

    		if (ParT.brushs != null)
    			ShadBrush = ParT.brushs.Copy();

    		if (ParT.stringformat != null)
    			StringFormat = ParT.stringformat.Copy();

    		positionT = ParT.positionT;
    		rectSize = ParT.rectSize;
    		Text = ParT.Text;
    	}

    	public new void Draw(double Unit, Graphics Graphics)
    	{
    		if (Edit)
    			EditT = true;

    		if (EditS || EditPS)
    			EditTS = true;

    		base.Draw(Unit, Graphics);
    		DrawString(Unit, Graphics);
    	}

    	private void Calculation(double Unit)
    	{
    		us = Unit * base.Size;
    		usx = us * base.SizeX;
    		usy = us * base.SizeY;

    		bp = base.BasePoint;
    		bp.X *= usx;
    		bp.Y *= usy;

    		a0 = base.Angle;
            a1 = System.Math.PI * a0 / 180.0;
            M11 = System.Math.Cos(a1);
            M12 = System.Math.Sin(a1);

    		v.X = bp.X * M11 + bp.Y * (0.0 - M12);
    		v.Y = bp.X * M12 + bp.Y * M11;

    		p = base.Position;
    		bp.X = p.X * Unit - v.X;
    		bp.Y = p.Y * Unit - v.Y;

    		rect.X = (float)(positionT.X * us);
    		rect.Y = (float)(positionT.Y * us);
    		rect.Width = (float)(rectSize.X * us);
    		rect.Height = (float)(rectSize.Y * us);
    	}

        private void RebuildFont(double scaledSize)
        {
            if (font == null)
                font = new Font("", 1f);

            Font oldFont = font;

            font = new Font(
                oldFont.FontFamily,
                (float)scaledSize,
                oldFont.Style,
                oldFont.Unit,
                oldFont.GdiCharSet,
                oldFont.GdiVerticalFont);

            oldFont.Dispose();

            EditF = true;
            EditTS = true;
        }

        private void DrawString(double Unit, Graphics Graphics)
    	{
    		if (EditT)
    		{
    			Calculation(Unit);
    			EditT = false;
    		}

    		if (EditF || EditTS)
    		{
                RebuildFont((float)(us * fontSize));
    			EditF = false;
    			EditTS = false;
    		}

    		af = (float)a0;
    		xf = (float)base.SizeX;
    		yf = (float)base.SizeY;


            if (brushs != null)
            {
                GraphicsState state = Graphics.Save();

                Graphics.TranslateTransform((float)(bp.X + Shift), (float)(bp.Y + Shift));
                Graphics.RotateTransform(af);
                Graphics.ScaleTransform(xf, yf);
                Graphics.DrawString(Text, font, brushs, rect, stringformat);

                Graphics.Restore(state);
            }

            {
                GraphicsState state = Graphics.Save();

                Graphics.TranslateTransform((float)bp.X, (float)bp.Y);
                Graphics.RotateTransform(af);
                Graphics.ScaleTransform(xf, yf);
                Graphics.DrawString(Text, font, brusht, rect, stringformat);

                Graphics.Restore(state);
            }
        }

    	public Vector2D_2 GetStringRect(double Unit, Graphics Graphics)
    	{
    		double num = Unit * base.Size;

    		if (EditF || EditS || EditPS || EditTS)
    		{
                RebuildFont((float)(num * fontSize));
                EditF = false;
    			EditTS = false;
    		}

    		crr[0] = new CharacterRange(0, Text.Length);
    		stringformat.SetMeasurableCharacterRanges(crr);

            RectangleF layoutRect = new RectangleF(
                (float)(positionT.X * num),
                (float)(positionT.Y * num),
                (float)(rectSize.X * num),
                (float)(rectSize.X * num));

            RectangleF bounds = Graphics
                .MeasureCharacterRanges(Text ?? string.Empty,  font, layoutRect, stringformat)[0]
                .GetBounds(Graphics);

            return new Vector2D_2(
                new Vector2D(bounds.X / num, bounds.Y / num),
                new Vector2D(bounds.Width / num, bounds.Height / num));
        }

        public Vector2D[] GetStringRectPoints(double Unit, Graphics Graphics)
    	{
            Vector2D_2 stringRect = GetStringRect(Unit, Graphics);

            Vector2D pos = stringRect.v1;
            Vector2D size = stringRect.v2;

            size.X *= 1.07f;

            return new Vector2D[4]
            {
                pos,
                new Vector2D(pos.X + size.X, pos.Y),
                new Vector2D(pos.X + size.X, pos.Y + size.Y),
                new Vector2D(pos.X, pos.Y + size.Y)
            };
        }
        public void SetStringRectOutline(double Unit, Graphics Graphics)
    	{
    		Vector2D[] stringRectPoints = GetStringRectPoints(Unit, Graphics);

    		Out @out = new Out { Tension = 0f };
    		Vector2D vector2D = Dat.Vec2DZero - stringRectPoints[0];

    		double x = 0.05;
    		double num = 0.025;

    		@out.ps.Add(stringRectPoints[0].AddY(-num) + vector2D);
    		@out.ps.Add(stringRectPoints[1].AddXY(x, -num) + vector2D);
    		@out.ps.Add(stringRectPoints[2].AddXY(x, num) + vector2D);
    		@out.ps.Add(stringRectPoints[3].AddY(num) + vector2D);

    		base.OP.Add(@out);
    	}
    	public new void Dispose()
    	{
    		base.Dispose();

    		if (font != null)
    		{
    			font.Dispose();
                font = null;
    		}

    		if (brusht != null)
    		{
    			brusht.Dispose();
                brusht = null;
    		}

    		if (brushs != null)
    		{
    			brushs.Dispose();   
                brushs = null;
    		}

    		if (stringformat != null)
    		{
    			stringformat.Dispose(); 
                stringformat = null;
    		}
    	}
    }
}