using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Kresleni
{
    public partial class MyPort : UserControl
    {
        public MyControl panel;
        public double relx, rely;
        public bool resize;

        public MyPort ()
        {
            InitializeComponent();
        }

        private int X0, Y0;
        private bool stisknuto;

        private void MyPort_MouseDown(object sender, MouseEventArgs e)
        {
            stisknuto = true;
            X0 = e.X;
            Y0 = e.Y;
        }

        private void MyPort_MouseMove(object sender, MouseEventArgs e)
        {
            if (stisknuto)
            {
                if (e.Button == MouseButtons.Left)
                {
                    this.Left += e.X - X0;
                    this.Top += e.Y - Y0;
                    if (panel != null)
                       correct ();
                }
            }
        }

        private void MyPort_MouseUp(object sender, MouseEventArgs e)
        {
            stisknuto = false;
        }

        public void place()
        {
            Left = panel.Left + (int)Math.Round
                   (relx * (panel.Width-Width));
            Top = panel.Top + (int)Math.Round
                   (rely * (panel.Height-Height));
            Parent = panel.Parent;
            BringToFront();
        }

        public void correct()
        {

            panel.Left = Left - (int) Math.Round
                (relx * (panel.Width-Width));
            panel.Top = Top - (int)Math.Round
                   (rely * (panel.Height - Height));

            foreach (Control c in Parent.Controls)
            {
                MyPort p = c as MyPort;
                if (p != null && p.panel == this.panel && p != this)
                    p.place();
            }
        }
    }
}