using System;
using System.Drawing;
using System.Windows.Forms;

namespace VictusLauncher
{
    public class DuskTextBox : Panel
    {
        public readonly TextBox TextBox;
        protected readonly Panel OverlayPanel1;
        protected readonly Panel OverlayPanel2;

        public new String Text
        {
            get
            {
                return TextBox.Text;
            }
            set
            {
                TextBox.Text = value;
            }
        }
        public Char PasswordChar
        {
            get
            {
                return TextBox.PasswordChar;
            }
            set
            {
                TextBox.PasswordChar = value;
            }
        }

        public DuskTextBox()
        {
            TextBox = new TextBox
            {
                Location = new Point(2, 1),
                BorderStyle = BorderStyle.None
            };

            TextBox.GotFocus += OnTextBoxGotFocus;
            TextBox.LostFocus += OnTextBoxLostFocus;

            OverlayPanel1 = new Panel
                            {
                                BackColor = Color.Transparent
                            };

            OverlayPanel2 = new Panel
                            {
                                BackColor = Color.Transparent
                            };

            Controls.Add(OverlayPanel1);
            Controls.Add(OverlayPanel2);
            Controls.Add(TextBox);
        }

        protected override void OnCreateControl()
        {
            TextBox.Size = Size - new Size(4, 0);

            OverlayPanel1.Size = new Size(5, 5);
            OverlayPanel1.Location = new Point(0, 0);

            OverlayPanel2.Size = new Size(5, 5);
            OverlayPanel2.Location = new Point(Width-5, 0);

            base.OnCreateControl();
        }

        protected override void OnGotFocus(EventArgs e)
        {
            TextBox.Focus();

            base.OnGotFocus(e);
        }

        public void OnTextBoxGotFocus(object sender, EventArgs e)
        {
            Refresh();
        }

        public void OnTextBoxLostFocus(object sender, EventArgs e)
        {
            Refresh();
        }

        protected override void OnPaint(PaintEventArgs args)
        {
            Graphics o1Graphics = OverlayPanel1.CreateGraphics();
            Graphics o2Graphics = OverlayPanel2.CreateGraphics();

            SolidBrush bBrush = new SolidBrush(TextBox.Focused ? Color.DarkOrange : Color.LightGray);
            SolidBrush tbBrush = new SolidBrush(Color.White);
            SolidBrush bgBrush = new SolidBrush(Color.LightGray);

            Pen bgPen = new Pen(bgBrush, 1.0f);
            Pen tbPen = new Pen(tbBrush, 1.0f);
            Pen bPen = new Pen(bBrush, 1.6f);

            o1Graphics.DrawLine(bgPen, 0, 0, 2, 0);
            o1Graphics.DrawLine(bgPen, 0, 1, 2, 1);
            o1Graphics.DrawLine(bgPen, 0, 2, 2, 2);
            o1Graphics.DrawLine(tbPen, 4, 1, 6, 1);
            o1Graphics.DrawLine(tbPen, 2, 2, 6, 2);
            o1Graphics.DrawLine(tbPen, 1, 3, 6, 3);
            o1Graphics.DrawLine(tbPen, 1, 4, 6, 4);

            o2Graphics.DrawLine(bgPen, 2, 0, 4, 0);
            o2Graphics.DrawLine(bgPen, 3, 1, 3, 1);
            o2Graphics.DrawLine(bgPen, 4, 1, 4, 3);
            o2Graphics.DrawLine(tbPen, 0, 1, 2, 1);
            o2Graphics.DrawLine(tbPen, 0, 2, 2, 2);
            o2Graphics.DrawLine(tbPen, 0, 3, 2, 3);
            o2Graphics.DrawLine(tbPen, 0, 4, 3, 4);

            args.Graphics.DrawLine(bPen, 0, Height - 1, Width, Height - 1);
            args.Graphics.DrawLine(bPen, 0, Height - 1, 0, 4);
            args.Graphics.DrawLine(bPen, Width - 1, Height - 1, Width - 1, 4);
            args.Graphics.DrawLine(bPen, 4, 0, Width - 4, 0);

            Point[] lTopCurve = new[]
                                {
                                    new Point(0, 4), 
                                    new Point(1, 2), 
                                    new Point(2, 1), 
                                    new Point(4, 0), 
                                };

            Point[] rTopCurve = new[]
                                {
                                    new Point(4, 4), 
                                    new Point(2, 1), 
                                    new Point(0, 0), 
                                };

            o1Graphics.DrawCurve(bPen, lTopCurve);
            o2Graphics.DrawCurve(bPen, rTopCurve);

            base.OnPaint(args);
        }
    }
}