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;


namespace GraphicsPictureHouse
{
    public partial class Form1 : Form
    {
        private Graphics gScreen;
        private Graphics gBitmap;
        private Bitmap bitmap;
        private int zoom = 1;
        private bool mouseDown = false;
        private int xCentre = 300;
        private int yCentre = 300;
        private int xRoute = 0;
        private int yRoute = 0;
        int xStart;
        int yStart;

        public Form1()
        {
            InitializeComponent();
            gBitmap = this.CreateGraphics();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            gScreen = CreateGraphics();
            bitmap = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
            gBitmap = Graphics.FromImage(bitmap); //?
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {

            MyClass.Draw(e.Graphics, Convert.ToInt32(numericUpDown.Value), zoom, xCentre+xRoute, yCentre+yRoute);
            gScreen.DrawImage(bitmap, ClientRectangle);
        }

        private void Mouse_Move(object sender, MouseEventArgs e)
        {
            this.Text = " " + e.X + " " + e.Y;
            if (mouseDown)
            {
                xRoute = xStart - xCentre;
                yStart = yStart - yCentre;
                this.Refresh();
            }
        }

        private void paint_Btn_Click(object sender, EventArgs e)
        {
            this.Refresh();
        }

        private void Mouse_Down(object sender, MouseEventArgs e)
        {
            mouseDown = true;
            xStart = e.X;
            yStart = e.X;



        }

        private void Mouse_Wheel(object sender, MouseEventArgs e)
        {
            zoom++;
            this.Refresh();
        }

        private void Mouse_Up(object sender, MouseEventArgs e)
        {
            mouseDown = false;
        }
    }
}