辛苦半天做出来的,如果觉得好用,记得点赞
效果图如下:
具体操作:
1 、添加代码(代码在下面),重新生成下整个工程,在工具栏中就出现控件,将控件拖到窗体中
2、只需要调整这些参数就行
3. 常用事件
4. 下面是代码 ,直接复制,将顶部?namespace 名改成你的工程名称就能用了 。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace 视频下载和播放
{
public class LTrackBar : Control
{
public LTrackBar()
{
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
CreateControl();
}
[Category("DemoUI"), Description("背景条颜色")]
/// <summary>
/// 未滑按钮
/// </summary>
private Color _BarButtonColor = Color.FromArgb(0, 0, 200); // 浅绿色
public Color L_BarButtonColor
{
get { return _BarButtonColor; }
set
{
_BarButtonColor = value;
Invalidate();
}
}
/// <summary>
/// 未滑过的区域颜色
/// </summary>
private Color _BarColor = Color.FromArgb(128, 255, 128); // 浅绿色
public Color L_BarColor
{
get { return _BarColor; }
set{
_BarColor = value;
Invalidate();
}
}
/// <summary>
/// 已滑过的区域颜色
/// </summary>
private Color _SliderColor = Color.FromArgb(0, 200, 0); // 浅绿色
public Color L_SliderColor
{
get { return _SliderColor; }
set
{
_SliderColor = value;
Invalidate();
}
}
/// <summary>
/// 圆角
/// </summary>
private bool _IsRound = true;
public bool L_IsRound
{
get { return _IsRound; }
set {
_IsRound = value;
Invalidate();
}
}
/// <summary>
/// 最小值
/// </summary>
private int _Minimum = 0;
public int L_Minimum {
get { return _Minimum; }
set {
_Minimum = Convert.ToInt32(value);
if (_Minimum >= _Maximum) { _Minimum = _Maximum - 1; }
if (_Minimum < 0) { _Minimum = 0; }
if (_Value < _Minimum) { _Value = _Minimum; }
Invalidate();
}
}
/// <summary>
/// 最大值
/// </summary>
private int _Maximum = 100;
public int L_Maximum
{
get { return _Maximum; }
set
{
_Maximum = Convert.ToInt32(value);
if (_Minimum >= _Maximum) { _Maximum = _Minimum + 1; }
if (_Value > _Minimum) { _Value = _Minimum; }
Invalidate();
}
}
/// <summary>
/// 添加 滑块值改变 委托事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public delegate void LValueChangedEventHandler(object sender, LEventArgs e);
public event LValueChangedEventHandler LValueChanged;
/// <summary>
/// 滑块的当前值
/// </summary>
private int _Value = 0;
public int L_Value {
get { return _Value; }
set {
_Value = value;
if (_Value > _Maximum) { _Value = _Maximum; }
if (_Value < _Minimum) { _Value = _Minimum; }
Invalidate();
LValueChanged?.Invoke(this, new LEventArgs(_Value));
}
}
/// <summary>
/// 滑块的方向
/// </summary>
private Orientation _Orientation = Orientation.Horizontal_LR;
public Orientation L_Orientation
{
get { return _Orientation; }
set {
Orientation old = _Orientation;
_Orientation = value;
if (old != _Orientation)
{
Size = new Size(Size.Height, Size.Width);
}
}
}
/// <summary>
/// 滑块的高度
/// </summary>
private int _BarSize = 10;
public int L_BarSize
{
get { return _BarSize; }
set
{
_BarSize = value;
if (_BarSize < 3) _BarSize = 3;
if (_Orientation == Orientation.Horizontal_LR)
{
Size = new Size(Width , _BarSize);
}
else
{
Size = new Size(_BarSize,Height);
}
}
}
/// <summary>
/// 实现只能调整宽度/高度,需要重写SetBoundsCore方法
/// </summary>
protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified)
{
if (_Orientation == Orientation.Horizontal_LR)
base.SetBoundsCore(x, y, width, _BarSize, specified);
else
base.SetBoundsCore(x, y, _BarSize, height, specified);
}
MouseStatus mouseStatus;
private PointF mousePoint;
/// <summary>
/// 尺寸变化是刷新
/// </summary>
/// <param name="e"></param>
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
Invalidate();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
pValueToPoint();
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
float barSizeRatio = 0.7f;
if (_BarSize < 15)
barSizeRatio = 0.5f;
Pen penBarBack = new Pen(_BarColor, _BarSize * barSizeRatio);
Pen penBarFore = new Pen(_SliderColor, _BarSize * barSizeRatio);
float fCapWidth = _BarSize;
float fCapHalfWidth = _BarSize / 2.0f;
if (_IsRound)
{
penBarBack.StartCap = LineCap.Round;
penBarBack.EndCap = LineCap.Round;
penBarFore.StartCap = LineCap.Round;
penBarFore.EndCap = LineCap.Round;
}
float fPointValue = 0;
if (_Orientation == Orientation.Horizontal_LR)
{
e.Graphics.DrawLine(penBarBack, fCapHalfWidth, Height / 2f, Width - fCapHalfWidth, Height / 2f);
fPointValue = mousePoint.X;
if (fPointValue < fCapHalfWidth) fPointValue = fCapHalfWidth;
if (fPointValue > Width - fCapHalfWidth) fPointValue = Width - fCapHalfWidth;
}
else
{
e.Graphics.DrawLine(penBarBack, Width / 2f, fCapHalfWidth, Width / 2f, Height - fCapHalfWidth);
fPointValue = mousePoint.Y;
if (fPointValue < fCapHalfWidth) fPointValue = fCapHalfWidth;
if (fPointValue > Height - fCapHalfWidth) fPointValue = Height - fCapHalfWidth;
}
Brush brush = new SolidBrush(_BarButtonColor);
if (_Orientation == Orientation.Horizontal_LR)
{
e.Graphics.DrawLine(penBarFore, fCapHalfWidth, Height / 2f, fPointValue, Height / 2f);
e.Graphics.FillEllipse(brush, fPointValue - fCapHalfWidth, Height / 2f - fCapHalfWidth, fCapWidth-1, fCapWidth-1);
}
else
{
e.Graphics.DrawLine(penBarFore, Width / 2f, fPointValue, Width / 2f, Height - fCapHalfWidth);
e.Graphics.FillEllipse(brush, Width / 2f - fCapHalfWidth, fPointValue - fCapHalfWidth, fCapWidth-1, fCapWidth - 1);
}
}
private void pValueToPoint()
{
float fCapWidth = _BarSize;
float fCapHalfWidth = _BarSize / 2.0f;
float fRatio = Convert.ToSingle(_Value - _Minimum) / (_Maximum - _Minimum);
if (_Orientation == Orientation.Horizontal_LR)
{
float fPointValue = fRatio * (Width - fCapWidth) + fCapHalfWidth;
mousePoint = new PointF(fPointValue, fCapHalfWidth);
}
else
{
float fPointValue = Height - fCapHalfWidth - fRatio * (Height - fCapWidth);
mousePoint = new PointF(fCapHalfWidth, fPointValue);
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
mouseStatus = MouseStatus.Down;
mousePoint = e.Location;
pPointToValue();
Invalidate();
base.OnMouseDown(e);
}
protected override void OnMouseUp(MouseEventArgs e)
{
mouseStatus = MouseStatus.Up;
base.OnMouseUp(e);
}
protected override void OnMouseMove(MouseEventArgs e)
{
if (mouseStatus == MouseStatus.Down)
{
mousePoint = e.Location;
pPointToValue();
Invalidate();
}
base.OnMouseMove(e);
}
protected override void OnMouseEnter(EventArgs e)
{
mouseStatus = MouseStatus.Enter;
base.OnMouseEnter(e);
}
protected override void OnMouseLeave(EventArgs e)
{
mouseStatus = MouseStatus.Leave;
base.OnMouseLeave(e);
}
/// <summary>
/// 计算滑块位置
/// </summary>
private void pPointToValue()
{
float fCapHalfWidth = 0;
float fCapWidth = 0;
if (_IsRound)
{
fCapWidth = _BarSize;
fCapHalfWidth = _BarSize * 0.5f;
}
// 计算滑块的位置
if (_Orientation == Orientation.Horizontal_LR)
{
float fRatio = Convert.ToSingle(mousePoint.X - fCapHalfWidth) / (Width - fCapWidth);
_Value = Convert.ToInt32(fRatio * (_Maximum - _Minimum) + _Minimum);
}
else
{
float fRatio = Convert.ToSingle(Height - mousePoint.Y - fCapHalfWidth) / (Height - fCapWidth);
_Value = Convert.ToInt32(fRatio * (_Maximum - _Minimum) + _Minimum);
}
if (_Value < _Minimum)
_Value = _Minimum;
else if (_Value > _Maximum)
_Value = _Maximum;
LValueChanged?.Invoke(this, new LEventArgs(_Value));
}
}
public class LEventArgs : EventArgs
{
public LEventArgs(object value)
{
Value = value;
}
public object Value { get; set; }
}
/// <summary>
/// 控件方向
/// </summary>
public enum Orientation
{
/// <summary>
/// 水平方向 (从左到右)
/// </summary>
Horizontal_LR,
/ <summary>
/ 水平方向 (从右到左)
/ </summary>
//Horizontal_RL,
/// <summary>
/// 垂直方向 (从下到上)
/// </summary>
Vertical_BT,
/ <summary>
/ 垂直方向 (从上到下)
/ </summary>
//Vertical_TB,
}
/// <summary>
/// 鼠标状态
/// </summary>
public enum MouseStatus
{
/// <summary>
/// 鼠标进入
/// </summary>
Enter,
/// <summary>
/// 鼠标离开
/// </summary>
Leave,
/// <summary>
/// 鼠标按下
/// </summary>
Down,
/// <summary>
/// 鼠标放开
/// </summary>
Up
}
}