using System;
using System.Collections.Generic;

using System.Web;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;

/// <summary>
/// Summary description for RandomImage
/// </summary>
public class RandomImage
{
    public RandomImage()
    { }

    public string Text
    {
        get 
        {
            return this.text;
        }
    }
    public  Bitmap Image
    {
        get
        {
            return this.image;
        }
    }
    public int Width
    {
        get
     {
         return this.width;
        }
    }
    public int Height
    {
        get
        {
            return this.height;
        }
    }

    private string text;
    private int height;
    private int width;
    private Bitmap image;
    private Random random = new Random();

    public RandomImage(string s, int width, int height)
    {
        this.text = s;
        this.SetDimesion(width, height);
        this.GenerateImage();
    }
    public void Dispose()
    {
        GC.SuppressFinalize(this);
        this.Dispose(true);
    }

    protected virtual void Dispose(bool disposing)
    {
        if (disposing)
            this.image.Dispose();
    }

    private void SetDimesion(int width, int height)
    {
        if (width <= 0)
            throw new ArgumentOutOfRangeException("width", width,
                "Argument out of range, must be greater than zero.");
        if (height <= 0)
            throw new ArgumentOutOfRangeException("height", height,
                "Argument out of range, must be greater than zero.");
        this.width = width;
        this.height = height;
    }

    private void GenerateImage()
    {
        Bitmap bitmap = new Bitmap
         (this.width, this.height, PixelFormat.Format32bppArgb);
        Graphics g = Graphics.FromImage(bitmap);
        g.SmoothingMode = SmoothingMode.AntiAlias;
        Rectangle rect = new Rectangle(0, 0, this.width, this.height);
        HatchBrush hatchBrush = new HatchBrush(HatchStyle.SmallConfetti,
            Color.LightGray, Color.White);
        g.FillRectangle(hatchBrush, rect);
        SizeF size;
        float fontSize = rect.Height + 1;
        Font font;

        do
        {
            fontSize--;
            font = new Font(FontFamily.GenericSansSerif, fontSize, FontStyle.Bold);
            size = g.MeasureString(this.text, font);
        } while (size.Width > rect.Width);
        StringFormat format = new StringFormat();
        format.Alignment = StringAlignment.Center;
        format.LineAlignment = StringAlignment.Center;
        GraphicsPath path = new GraphicsPath();
        //path.AddString(this.text, font.FontFamily, (int) font.Style, 
        //    font.Size, rect, format);
        path.AddString(this.text, font.FontFamily, (int)font.Style, 75, rect, format);
        float v = 4F;
        PointF[] points =
          {
                new PointF(this.random.Next(rect.Width) / v, this.random.Next(
                   rect.Height) / v),
                new PointF(rect.Width - this.random.Next(rect.Width) / v, 
                    this.random.Next(rect.Height) / v),
                new PointF(this.random.Next(rect.Width) / v, 
                    rect.Height - this.random.Next(rect.Height) / v),
                new PointF(rect.Width - this.random.Next(rect.Width) / v,
                    rect.Height - this.random.Next(rect.Height) / v)
          };
        Matrix matrix = new Matrix();
        matrix.Translate(0F, 0F);
        path.Warp(points, rect, matrix, WarpMode.Perspective, 0F);
        hatchBrush = new HatchBrush(HatchStyle.Percent10, Color.Black, Color.HotPink);
        g.FillPath(hatchBrush, path);
        int m = Math.Max(rect.Width, rect.Height);
        for (int i = 0; i < (int)(rect.Width * rect.Height / 30F); i++)
        {
            int x = this.random.Next(rect.Width);
            int y = this.random.Next(rect.Height);
            int w = this.random.Next(m / 50);
            int h = this.random.Next(m / 50);
            g.FillEllipse(hatchBrush, x, y, w, h);
        }
        font.Dispose();
        hatchBrush.Dispose();
        g.Dispose();
        this.image = bitmap;
    }

    
}