using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        Bitmap foto;
        public Form1()
        {
            InitializeComponent();
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            this.openFileDialog1.Filter = "Images2 (*.bmp, *.jpg, *.png )| *.bmp; *.jpg; *.png| Bitmap (*.bmp) | *.bmp|JPEG (*.jpg) | *.jpg |PNG (*.png)| *.png ";
            if (this.openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    foto = new Bitmap(this.openFileDialog1.FileName);
                    float k = (foto.Height > foto.Width) ? ((float)pictureBox1.Height / foto.Height) : ((float)pictureBox1.Width / foto.Width);
                    pictureBox1.Image = new Bitmap(foto, (int)(foto.Width * k), (int)(foto.Height * k));
                }
                catch
                {
                    MessageBox.Show("Плохой файл!");
                }
            }
        }

        private void Button2_Click(object sender, EventArgs e)
        {
           switch ((comboBox1.SelectedItem.ToString().Trim()))
            {
                case "Sas":
                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {
                            Color current = foto.GetPixel(x, y);
                            int avg = (current.R + current.B + current.G) / 3;
                            Color output = Color.FromArgb(avg, avg, avg);
                            foto.SetPixel(x, y, output);


                        }
                    }
                    break;

                case "pas":
                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {
                            Color current = foto.GetPixel(x, y);
                            int avg = Math.Max(Math.Max(current.R,current.B),current.G);
                            Color output = Color.FromArgb(avg, avg, avg);
                            foto.SetPixel(x, y, output);

                        }
                    }
                    break;

                case "cas":

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {
                            Color current = foto.GetPixel(x, y);
                            double avg =(255 / (Math.Sqrt(255 * 255 + 255 * 255 + 255 * 255))) * (Math.Sqrt(current.R* current.R + current.B * current.B + current.G * current.G));
                            Color output = Color.FromArgb((int)avg, (int)avg, (int)avg);
                            foto.SetPixel(x, y, output);

                        }
                    }
                    break;

                case "las":

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {

                                Color current = foto.GetPixel(x, y);
                                int avg = (Math.Max(Math.Max(current.R, current.B), current.G)+ Math.Min(Math.Min(current.R, current.B), current.G))/2;
                                Color output = Color.FromArgb(avg, avg, avg);
                                foto.SetPixel(x, y, output);
                        }
                    }
                    break;

                case "vas":
/*                    this.chart1.Titles.Add("Total Income");

                    Series series = this.chart1.Series.Add("SADASDAS");
                    series.ChartType = SeriesChartType.Spline;*/

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {
/*                            if ((x == 2) && (y<100))
                                series.Points.AddXY(x, y);
                            if ((x == 3) && (y > 166) && (y < 255))
                                series.Points.AddXY(x, y);*/
                            Color current = foto.GetPixel(x, y);
                            int avg = (int)(0.213*current.R + 0.715*current.B + 0.072*current.G);
                            Color output = Color.FromArgb(avg, avg, avg);
                            foto.SetPixel(x, y, output);
                        }
                    }

                            break;

                case "neg":

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {

                            Color current = foto.GetPixel(x, y);
                            int avg1 = (255 - current.R);
                            int avg2 = (255 - current.G);
                            int avg3 = (255 - current.B);
                            Color output = Color.FromArgb(avg1, avg2, avg3);
                            foto.SetPixel(x, y, output);
                        }
                    }
                    break;

                case "ln":

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {

                            Color current = foto.GetPixel(x, y);
                            int avg1 = (int)((255 / Math.Log(1+255))*Math.Log(current.R+1));
                            int avg2 = (int)((255 / Math.Log(1 + 255)) * Math.Log(current.G + 1));
                            int avg3 = (int)((255 / Math.Log(1 + 255)) * Math.Log(current.B + 1));
                            Color output = Color.FromArgb(avg1, avg2, avg3);
                            foto.SetPixel(x, y, output);
                        }
                    }
                    break;

                case "lg":

                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {

                            Color current = foto.GetPixel(x, y);
                            int avg1 = (int)((255 / Math.Log(1 + 255)) * Math.Log10(current.R + 1));
                            int avg2 = (int)((255 / Math.Log(1 + 255)) * Math.Log10(current.G + 1));
                            int avg3 = (int)((255 / Math.Log(1 + 255)) * Math.Log10(current.B + 1));
                            Color output = Color.FromArgb(avg1, avg2, avg3);
                            foto.SetPixel(x, y, output);

                        }
                    }

                    break;

                case "step":
                    double cct = Convert.ToDouble(numericUpDown1.Value);
                    double c = 255 / Math.Pow(255, cct);
                    for (int x = 0; x < foto.Width; x++)
                    {
                        for (int y = 0; y < foto.Height; y++)
                        {
                            Color current = foto.GetPixel(x, y);
                            double avg1 = c * Math.Pow(current.R,cct);
                            double avg2 = c * Math.Pow(current.G,cct);
                            double avg3 = c * Math.Pow(current.B,cct);
                            Color output = Color.FromArgb((int)avg1, (int)avg2, (int)avg3);
                            foto.SetPixel(x, y, output);
                        }
                    }
                    break;


                default:
                    MessageBox.Show("You're playing League");
                    break;
            }

            float k = (foto.Height > foto.Width) ? ((float)pictureBox2.Height / foto.Height) : ((float)pictureBox2.Width / foto.Width);
            pictureBox2.Image = new Bitmap(foto, (int)(foto.Width * k), (int)(foto.Height * k));
        }

    }
}