Baka_MPlayer.Controls.ColorSlider.OnMouseMove C# (CSharp) Method

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);
            if (Capture & e.Button == MouseButtons.Left)
            {
                var set = ScrollEventType.ThumbPosition;
                Point pt = e.Location;
                int margin = thumbSize.Width >> 1;
                int p = pt.X - margin;
                float coef = (float)(barMaximum - barMinimum) /
                             (ClientSize.Width - 2 * margin);
                trackerValue = (int)(p * coef + barMinimum);

                if (trackerValue <= barMinimum)
                {
                    trackerValue = barMinimum;
                    set = ScrollEventType.First;
                }
                else if (trackerValue >= barMaximum)
                {
                    trackerValue = barMaximum;
                    set = ScrollEventType.Last;
                }

                if (Scroll != null) Scroll(this, new ScrollEventArgs(set, trackerValue));
                if (ValueChanged != null) ValueChanged(this, new EventArgs());
            }
            Invalidate();
        }