#region Imports
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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#endregion
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namespace DPumpHydr.WinFrmUI.RLT.Controls
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{
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#region TrackBar
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[DefaultEvent("ValueChanged")]
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public class TrackBar : Control
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{
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#region Enums
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public enum ValueDivisor
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{
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By1 = 1,
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By10 = 10,
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By100 = 100,
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By1000 = 1000
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}
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#endregion
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#region Variables
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private Rectangle FillValue;
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private Rectangle PipeBorder;
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private Rectangle TrackBarHandleRect;
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private bool Cap;
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private int ValueDrawer;
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private Size ThumbSize = new(14, 14);
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private Rectangle TrackThumb;
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private int _Minimum = 0;
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private int _Maximum = 10;
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private int _Value = 0;
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private bool _JumpToMouse = false;
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private ValueDivisor DividedValue = ValueDivisor.By1;
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#endregion
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#region Properties
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public int Minimum
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{
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get => _Minimum;
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set
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{
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if (value >= _Maximum)
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{
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value = _Maximum - 10;
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}
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if (_Value < value)
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{
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_Value = value;
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}
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_Minimum = value;
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Invalidate();
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}
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}
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public int Maximum
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{
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get => _Maximum;
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set
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{
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if (value <= _Minimum)
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{
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value = _Minimum + 10;
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}
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if (_Value > value)
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{
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_Value = value;
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}
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_Maximum = value;
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Invalidate();
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}
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}
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public delegate void ValueChangedEventHandler();
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private ValueChangedEventHandler ValueChangedEvent;
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public event ValueChangedEventHandler ValueChanged
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{
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add => ValueChangedEvent = (ValueChangedEventHandler)System.Delegate.Combine(ValueChangedEvent, value);
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remove => ValueChangedEvent = (ValueChangedEventHandler)System.Delegate.Remove(ValueChangedEvent, value);
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}
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public int Value
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{
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get => _Value;
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set
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{
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if (_Value != value)
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{
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if (value < _Minimum)
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{
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_Value = _Minimum;
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}
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else
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{
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if (value > _Maximum)
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{
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_Value = _Maximum;
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}
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else
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{
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_Value = value;
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}
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}
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Invalidate();
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ValueChangedEvent?.Invoke();
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}
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}
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}
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public ValueDivisor ValueDivison
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{
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get => DividedValue;
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set
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{
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DividedValue = value;
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Invalidate();
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}
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}
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[Browsable(false)]
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public float ValueToSet
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{
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get => _Value / (int)DividedValue;
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set => Value = (int)(value * (int)DividedValue);
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}
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public bool JumpToMouse
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{
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get => _JumpToMouse;
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set
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{
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_JumpToMouse = value;
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Invalidate();
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}
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}
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#endregion
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#region EventArgs
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protected override void OnMouseMove(MouseEventArgs e)
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{
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base.OnMouseMove(e);
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checked
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{
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bool flag = Cap && e.X > -1 && e.X < Width + 1;
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if (flag)
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{
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Value = _Minimum + (int)Math.Round((_Maximum - _Minimum) * (e.X / (double)Width));
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}
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}
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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base.OnMouseDown(e);
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if (e.Button == MouseButtons.Left)
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{
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ValueDrawer = (int)Math.Round((_Value - _Minimum) / (double)(_Maximum - _Minimum) * (Width - 11));
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TrackBarHandleRect = new(ValueDrawer, 0, 25, 25);
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Cap = TrackBarHandleRect.Contains(e.Location);
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Focus();
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if (_JumpToMouse)
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{
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Value = _Minimum + (int)Math.Round((_Maximum - _Minimum) * (e.X / (double)Width));
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}
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}
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}
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protected override void OnMouseUp(MouseEventArgs e)
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{
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base.OnMouseUp(e);
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Cap = false;
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}
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#endregion
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public TrackBar()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.DoubleBuffer, true);
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Size = new(80, 22);
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MinimumSize = new(47, 22);
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}
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protected override void OnResize(EventArgs e)
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{
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base.OnResize(e);
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Height = 22;
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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Graphics G = e.Graphics;
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G.Clear(Parent.BackColor);
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G.SmoothingMode = SmoothingMode.AntiAlias;
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TrackThumb = new(7, 10, Width - 16, 2);
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PipeBorder = new(1, 10, Width - 3, 2);
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try
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{
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ValueDrawer = (int)Math.Round((_Value - _Minimum) / (double)(_Maximum - _Minimum) * Width);
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}
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catch (Exception)
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{
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//
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}
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TrackBarHandleRect = new(ValueDrawer, 0, 3, 20);
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G.FillRectangle(new SolidBrush(Color.FromArgb(124, 131, 137)), PipeBorder);
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FillValue = new(0, 10, TrackBarHandleRect.X + TrackBarHandleRect.Width - 4, 3);
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G.ResetClip();
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G.SmoothingMode = SmoothingMode.Default;
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G.DrawRectangle(new(Color.FromArgb(124, 131, 137)), PipeBorder); // Draw pipe border
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G.FillRectangle(new SolidBrush(Color.FromArgb(32, 34, 37)), FillValue);
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G.ResetClip();
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G.SmoothingMode = SmoothingMode.HighQuality;
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G.FillEllipse(new SolidBrush(Color.FromArgb(32, 34, 37)), TrackThumb.X + (int)Math.Round(unchecked(TrackThumb.Width * (Value / (double)Maximum))) - (int)Math.Round(ThumbSize.Width / 2.0), TrackThumb.Y + (int)Math.Round(TrackThumb.Height / 2.0) - (int)Math.Round(ThumbSize.Height / 2.0), ThumbSize.Width, ThumbSize.Height);
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G.DrawEllipse(new(Color.FromArgb(32, 34, 37)), TrackThumb.X + (int)Math.Round(unchecked(TrackThumb.Width * (Value / (double)Maximum))) - (int)Math.Round(ThumbSize.Width / 2.0), TrackThumb.Y + (int)Math.Round(TrackThumb.Height / 2.0) - (int)Math.Round(ThumbSize.Height / 2.0), ThumbSize.Width, ThumbSize.Height);
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}
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}
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#endregion
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}
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