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 _2056
{
    public partial class myPaint : Form
    {
        /*Variables*/
        /*Start position of mouse on the canvas*/
        private int mouseStartX = 0;
        private int mouseStartY = 0;
        /*Current position of the mouse on the canvas*/
        private int mouseCurrentX = 0;
        private int mouseCurrentY = 0;
        /*Start position for rectangle on the canvas*/
        private int recStartPositionX = 0;
        private int recStartPositionY = 0;
        /*Size of the rectangle on the canvas*/
        private int recSizeY = 0;
        private int recSizeX = 0;
        /*Chek if mouse is down*/
        private bool mouseDown = false;
        /*Bitmap objects*/
        private Bitmap bm;
        /*Determine what shape is selected*/
        private int shapeSelected = 0;
        /*Color of the line of the shapes*/
        private Color linePaintColor;
        /*Color of the fill line of the shapes*/
        private Color lineFillPaintColor;


        public myPaint()
        {
            InitializeComponent();
            bm = new Bitmap(paint_Canvas.Width, paint_Canvas.Height);
            linePaintColor = Color.Black;
            lineFillPaintColor = Color.Black;
        }

        private void paint_Canvas_Paint(object sender, PaintEventArgs e)
        {
            Graphics gPaint = e.Graphics;
            if (mouseDown == true)
            {
                Pen size = new Pen(linePaintColor);
                if (shapeSelected == 1)
                {
               gPaint.DrawLine(size, new Point(mouseStartX, mouseStartY),
                    new Point(mouseCurrentX + mouseStartX, mouseCurrentY + mouseStartY));
                }
                else if (shapeSelected == 2)
                {
                    gPaint.DrawEllipse(size, mouseStartX, mouseStartY, mouseCurrentX, mouseCurrentY);
                }
                else if (shapeSelected == 3)
                {
                    gPaint.DrawRectangle(size, mouseStartX, mouseStartY, mouseCurrentX, mouseCurrentY);

                }

            }
            gPaint.DrawImage(bm, new Point(0, 0));

        }

        private void ToolBar_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {

        }

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



        }

        private void paint_Canvas_MouseDown(object sender, MouseEventArgs e)
        {
            Pen size1 = new Pen(linePaintColor);
              Graphics gPaint = Graphics.FromImage(bm);
            if (mouseDown = true)
            {

                mouseStartX = e.X;
                mouseStartY = e.Y;
                mouseCurrentX = e.X - mouseStartX;
                mouseCurrentY = e.Y - mouseStartY;

            }

            if(e.Button == MouseButtons.Left)
            {
                Pen size = new Pen(linePaintColor);

                mouseDown = true;
                Graphics gPaint1 = Graphics.FromImage(bm);

                if(shapeSelected == 1)
                {
                    gPaint.DrawLine(size, new Point(mouseStartX, mouseStartY),
                        new Point(mouseCurrentX + mouseStartX, mouseCurrentY + mouseStartY));

                }
                else if (shapeSelected == 2)
                {
                    gPaint.DrawEllipse(size, mouseStartX, mouseStartY, mouseCurrentX, mouseCurrentY);

                }
                else if (shapeSelected == 3)
                {
                    gPaint.DrawRectangle(size, mouseStartX, mouseStartY, mouseCurrentX, mouseCurrentY);


                }

            }
        }
        private void paint_Canvas_MouseMove(object sender, MouseEventArgs e)
        {





              if (mouseDown == true)
            {
                mouseCurrentX = e.X - mouseStartX;
                mouseCurrentY = e.Y - mouseStartY;

                paint_Canvas.Invalidate();
            }
            else
            {
                paint_Canvas.Invalidate();
            }
            recStartPositionX = Math.Min(mouseStartX, e.X);
            recStartPositionY = Math.Min(mouseStartY, e.Y);
            recSizeX = Math.Max(mouseStartX, e.X);
            recSizeY = Math.Max(mouseStartY, e.Y);
        }

        private void lineBtn_Click(object sender, EventArgs e)
        {
            shapeSelected = 1;
        }

        private void circleBtn_Click(object sender, EventArgs e)
        {
            shapeSelected = 2;
        }

        private void square_Btn_Click(object sender, EventArgs e)
        {
            shapeSelected = 3;
        }

        private void black_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Black;
        }

        private void red_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Red;
        }

        private void blue_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Blue;
        }

        private void green_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Green;
        }

        private void yellow_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Yellow;
        }

        private void purple_Btn_Click(object sender, EventArgs e)
        {
            linePaintColor = Color.Purple;
        }

        private void otherColors_Btn_Click(object sender, EventArgs e)
        {
            ColorDialog colorWheel = new ColorDialog();
            if (colorWheel.ShowDialog() == DialogResult.OK)
            {
                linePaintColor = colorWheel.Color;
            }
        }

        private void toolStripButton15_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Black;
        }

        private void toolStripButton16_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Red;
        }

        private void toolStripButton17_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Blue;
        }

        private void toolStripButton18_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Green;
        }

        private void toolStripButton19_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Yellow;
        }

        private void toolStripButton20_Click(object sender, EventArgs e)
        {
            lineFillPaintColor = Color.Purple;
        }

        private void toolStripButton21_Click(object sender, EventArgs e)
        {
            ColorDialog colorWheel1 = new ColorDialog();
            if (colorWheel1.ShowDialog() == DialogResult.OK)
            {
                lineFillPaintColor = colorWheel1.Color;
            }
          }

        private void clrBtn_Click(object sender, EventArgs e)
        {
            Graphics gPaint = CreateGraphics();
            gPaint.Clear(SystemColors.Control);
        }
       }
     }