using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace ProcessHacker.Components
{
    public partial class ProgressBar : System.Windows.Forms.ProgressBar
    {
        public ProgressBar()
        {
            InitializeComponent();
        }

        int val = 0;		// Current progress
        Color BarColor = Color.Blue;		// Color of progress meter

        protected override void OnResize(EventArgs e)
        {
            // Invalidate the control to get a repaint.
            this.Invalidate();
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            SolidBrush brush = new SolidBrush(BarColor);
            float percent = (float)(val - this.Minimum) / (float)(this.Maximum - this.Minimum);
            Rectangle rect = this.ClientRectangle;

            // Calculate area for drawing the progress.
            rect.Width = (int)((float)rect.Width * percent);

            // Draw the progress meter.
            g.FillRectangle(brush, rect);

            // Draw a three-dimensional border around the control.
            Draw3DBorder(g);

            // Clean up.
            brush.Dispose();
            g.Dispose();
        }

        public Color ProgressBarColor
        {
            get
            {
                return BarColor;
            }

            set
            {
                BarColor = value;

                // Invalidate the control to get a repaint.
                this.Invalidate();
            }
        }

        private void Draw3DBorder(Graphics g)
        {
            int PenWidth = (int)Pens.White.Width;

            g.DrawLine(Pens.DarkGray,
                new Point(this.ClientRectangle.Left, this.ClientRectangle.Top),
                new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Top));
            g.DrawLine(Pens.DarkGray,
                new Point(this.ClientRectangle.Left, this.ClientRectangle.Top),
                new Point(this.ClientRectangle.Left, this.ClientRectangle.Height - PenWidth));
            g.DrawLine(Pens.White,
                new Point(this.ClientRectangle.Left, this.ClientRectangle.Height - PenWidth),
                new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Height - PenWidth));
            g.DrawLine(Pens.White,
                new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Top),
                new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Height - PenWidth));
        } 
    }
}