621 lines
18 KiB
C#
621 lines
18 KiB
C#
using JinYuan.ControlLib.UCHelper;
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using System;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Drawing;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace JinYuan.ControlLib
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{
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//public partial class UCRollText : UserControl
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//{
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// /// <summary>
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// /// The m intdirection
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// /// </summary>
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// int m_intdirection = 1;
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// /// <summary>
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// /// The rect text
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// /// </summary>
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// Rectangle rectText;
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// /// <summary>
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// /// The m timer
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// /// </summary>
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// System.Timers.Timer m_timer;
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// /// <summary>
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// /// The roll style
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// /// </summary>
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// private RollStyle _RollStyle = RollStyle.LeftToRight;
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// /// <summary>
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// /// 文本改变是否重新从边缘运动
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// /// </summary>
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// private bool _ISChangeReset = false;
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// private readonly SemaphoreSlim _updateLock = new SemaphoreSlim(1, 1);
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// private CancellationTokenSource _cts = new CancellationTokenSource();
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// private volatile bool _isStop = true;
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// private Rectangle _rectText;
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// private int _moveDirection = 1;
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// private const int DEFAULT_MOVE_STEP = 5;
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// private const int DEFAULT_SLEEP_TIME = 200;
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// #region Properties
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// public override Font Font
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// {
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// get => base.Font;
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// set
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// {
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// base.Font = value;
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// UpdateTextRectangle();
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// }
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// }
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// public override string Text
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// {
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// get => base.Text;
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// set
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// {
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// base.Text = value;
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// UpdateTextRectangle();
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// }
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// }
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// private RollStyle _rollStyle = RollStyle.LeftToRight;
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// public RollStyle RollStyle
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// {
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// get => _rollStyle;
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// set
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// {
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// _rollStyle = value;
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// _moveDirection = value == RollStyle.RightToLeft ? -1 : 1;
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// ResetTextPosition();
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// }
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// }
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// private bool _isChangeReset;
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// [Description("文本改变是否重新从边缘运动"), Category("自定义")]
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// public bool IsChangeReset
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// {
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// get => _isChangeReset;
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// set => _isChangeReset = value;
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// }
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// private bool _isExit;
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// [Description("是否退出"), Category("自定义")]
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// public bool IsExit
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// {
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// get => _isExit;
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// set
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// {
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// _isExit = value;
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// if (value)
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// {
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// StopAnimation();
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// }
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// }
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// }
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// private int _moveSleepTime = DEFAULT_SLEEP_TIME;
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// [Description("每次滚动间隔时间，越小速度越快"), Category("自定义")]
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// public int MoveSleepTime
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// {
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// get => _moveSleepTime;
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// set => _moveSleepTime = value > 0 ? value : DEFAULT_SLEEP_TIME;
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// }
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// #endregion
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// public UCRollText()
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// {
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// InitializeControl();
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// InitializeEvents();
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// StartAnimation();
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// }
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// private void InitializeControl()
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// {
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// SetStyle(ControlStyles.AllPaintingInWmPaint |
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// ControlStyles.DoubleBuffer |
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// ControlStyles.ResizeRedraw |
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// ControlStyles.Selectable |
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// ControlStyles.SupportsTransparentBackColor |
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// ControlStyles.UserPaint, true);
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// Size = new Size(450, 30);
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// Text = "滚动文字";
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// ForeColor = Color.FromArgb(255, 77, 59);
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// }
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// private void InitializeEvents()
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// {
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// Load += UCRollText_Load;
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// SizeChanged += UCRollText_SizeChanged;
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// VisibleChanged += (s, e) =>
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// {
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// _isStop = !Visible;
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// if (Visible)
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// {
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// StartAnimation();
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// }
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// };
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// }
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// private void UCRollText_SizeChanged(object sender, EventArgs e)
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// {
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// if (rectText != Rectangle.Empty)
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// {
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// rectText.Y = (this.Height - rectText.Height) / 2 + 1;
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// }
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// }
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// private void UCRollText_Load(object sender, EventArgs e)
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// {
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// if (_RollStyle == RollStyle.LeftToRight)
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// {
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// m_intdirection = 1;
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// if (rectText != Rectangle.Empty)
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// {
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// rectText.X = -1 * rectText.Width - 1;
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// }
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// }
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// else if (_RollStyle == RollStyle.RightToLeft)
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// {
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// m_intdirection = -1;
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// if (rectText != Rectangle.Empty)
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// {
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// rectText.X = this.Width + rectText.Width + 1;
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// }
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// }
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// else
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// {
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// m_intdirection = 1;
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// if (rectText != Rectangle.Empty)
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// {
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// rectText.X = 0;
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// }
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// }
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// if (rectText != Rectangle.Empty)
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// {
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// rectText.Y = (this.Height - rectText.Height) / 2 + 1;
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// }
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// }
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// private async void StartAnimation()
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// {
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// if (!_isStop) return;
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// _isStop = false;
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// _cts = new CancellationTokenSource();
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// try
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// {
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// await Task.Run(async () =>
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// {
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// while (!_isStop && !_isExit)
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// {
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// try
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// {
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// await Task.Delay(MoveSleepTime, _cts.Token);
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// if (!IsHandleCreated || IsDisposed) continue;
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// await UpdateTextPositionAsync();
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// }
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// catch (OperationCanceledException)
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// {
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// break;
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// }
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// catch (Exception ex)
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// {
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// Debug.WriteLine($"Animation error: {ex.Message}");
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// }
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// }
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// }, _cts.Token);
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// }
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// catch (OperationCanceledException) { }
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// }
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// private void StopAnimation()
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// {
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// _isStop = true;
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// try
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// {
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// _cts?.Cancel();
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// _cts?.Dispose();
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// _cts = null;
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// }
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// catch { }
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// }
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// private async Task UpdateTextPositionAsync()
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// {
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// if (_rectText == Rectangle.Empty) return;
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// if (_rollStyle == RollStyle.BackAndForth && _rectText.Width >= Width) return;
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// await _updateLock.WaitAsync();
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// try
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// {
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// // 使用 Invoke 方式
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// if (InvokeRequired)
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// {
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// Invoke((MethodInvoker)delegate
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// {
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// UpdateTextPosition();
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// });
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// }
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// else
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// {
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// UpdateTextPosition();
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// }
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// }
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// finally
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// {
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// _updateLock.Release();
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// }
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// }
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// private void UpdateTextPosition()
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// {
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// _rectText.X += DEFAULT_MOVE_STEP * _moveDirection;
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// switch (_rollStyle)
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// {
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// case RollStyle.BackAndForth:
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// if (_rectText.X <= 0)
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// _moveDirection = 1;
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// else if (_rectText.Right >= Width)
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// _moveDirection = -1;
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// break;
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// case RollStyle.LeftToRight:
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// if (_rectText.X > Width)
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// _rectText.X = -1 * _rectText.Width - 1;
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// break;
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// case RollStyle.RightToLeft:
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// if (_rectText.Right < 0)
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// _rectText.X = Width + _rectText.Width + 1;
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// break;
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// }
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// Invalidate(true);
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// }
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// private void UpdateTextRectangle()
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// {
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// if (string.IsNullOrEmpty(Text)) return;
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// using (var g = CreateGraphics())
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// {
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// var size = g.MeasureString(Text, Font);
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// _rectText = new Rectangle(
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// _isChangeReset ? 0 : _rectText.X,
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// (Height - (int)size.Height) / 2 + 1,
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// (int)size.Width,
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// (int)size.Height
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// );
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// }
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// }
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// private void ResetTextPosition()
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// {
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// if (_rectText == Rectangle.Empty) return;
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// switch (_rollStyle)
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// {
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// case RollStyle.LeftToRight:
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// _rectText.X = -1 * _rectText.Width - 1;
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// break;
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// case RollStyle.RightToLeft:
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// _rectText.X = Width + _rectText.Width + 1;
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// break;
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// default:
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// _rectText.X = 0;
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// break;
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// }
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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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// if (_rectText != Rectangle.Empty)
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// {
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// e.Graphics.SetGDIHigh();
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// using (var brush = new SolidBrush(ForeColor))
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// {
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// e.Graphics.DrawString(Text, Font, brush, _rectText.Location);
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// }
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// }
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// }
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//}
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public partial class UCRollText : UserControl
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{
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private Rectangle _rectText;
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private int _moveDirection = 1;
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private const int DEFAULT_MOVE_STEP = 2; // 减小步长，使滚动更平滑
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private const int DEFAULT_SLEEP_TIME = 20; // 减小刷新间隔，提高流畅度
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private readonly SemaphoreSlim _updateLock = new SemaphoreSlim(1, 1);
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private CancellationTokenSource _cts;
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private volatile bool _isStop = true;
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#region Properties
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public override Font Font
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{
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get => base.Font;
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set
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{
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base.Font = value;
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UpdateTextRectangle();
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}
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}
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public override string Text
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{
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get => base.Text;
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set
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{
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base.Text = value;
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UpdateTextRectangle();
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}
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}
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private RollStyle _rollStyle = RollStyle.LeftToRight;
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public RollStyle RollStyle
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{
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get => _rollStyle;
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set
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{
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_rollStyle = value;
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_moveDirection = value == RollStyle.RightToLeft ? -1 : 1;
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ResetTextPosition();
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}
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}
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private bool _isChangeReset;
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[Description("文本改变是否重新从边缘运动"), Category("自定义")]
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public bool IsChangeReset
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{
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get => _isChangeReset;
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set => _isChangeReset = value;
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}
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private bool _isExit;
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[Description("是否退出"), Category("自定义")]
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public bool IsExit
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{
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get => _isExit;
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set
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{
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_isExit = value;
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if (value) StopAnimation();
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}
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}
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private int _moveSleepTime = DEFAULT_SLEEP_TIME;
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[Description("每次滚动间隔时间，越小速度越快"), Category("自定义")]
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public int MoveSleepTime
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{
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get => _moveSleepTime;
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set => _moveSleepTime = value > 0 ? value : DEFAULT_SLEEP_TIME;
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}
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#endregion
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public UCRollText()
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{
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InitializeControl();
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InitializeEvents();
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StartAnimation();
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}
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private void InitializeControl()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint |
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ControlStyles.DoubleBuffer |
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ControlStyles.ResizeRedraw |
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ControlStyles.Selectable |
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ControlStyles.SupportsTransparentBackColor |
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ControlStyles.UserPaint, true);
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DoubleBuffered = true; // 启用双缓冲，减少闪烁
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Size = new Size(450, 30);
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Text = "滚动文字";
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ForeColor = Color.FromArgb(255, 77, 59);
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}
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private void InitializeEvents()
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{
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Load += UCRollText_Load;
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SizeChanged += UCRollText_SizeChanged;
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VisibleChanged += (s, e) =>
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{
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_isStop = !Visible;
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if (Visible) StartAnimation();
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};
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}
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private void UCRollText_SizeChanged(object sender, EventArgs e)
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{
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if (_rectText != Rectangle.Empty)
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{
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_rectText.Y = (Height - _rectText.Height) / 2 + 1;
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}
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}
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private void UCRollText_Load(object sender, EventArgs e)
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{
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ResetTextPosition();
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}
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private async void StartAnimation()
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{
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if (!_isStop) return;
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_isStop = false;
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_cts = new CancellationTokenSource();
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try
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{
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await Task.Run(async () =>
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{
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var stopwatch = new Stopwatch();
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stopwatch.Start();
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while (!_isStop && !_isExit)
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{
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await Task.Delay(MoveSleepTime, _cts.Token);
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if (!IsHandleCreated || IsDisposed) continue;
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try
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{
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var elapsed = stopwatch.ElapsedMilliseconds;
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stopwatch.Restart();
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await UpdateTextPositionAsync(elapsed);
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}
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catch (OperationCanceledException)
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{
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break;
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}
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catch (Exception ex)
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{
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Debug.WriteLine($"Animation error: {ex.Message}");
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}
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}
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}, _cts.Token);
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}
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catch (OperationCanceledException) { }
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}
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private void StopAnimation()
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{
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_isStop = true;
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_cts?.Cancel();
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_cts?.Dispose();
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_cts = null;
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}
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private async Task UpdateTextPositionAsync(long elapsedMilliseconds)
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{
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if (_rectText == Rectangle.Empty) return;
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if (_rollStyle == RollStyle.BackAndForth && _rectText.Width >= Width) return;
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await _updateLock.WaitAsync();
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try
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{
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//await Task.Run(() =>
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//{
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if (InvokeRequired)
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{
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BeginInvoke((MethodInvoker)(() => UpdateTextPosition(elapsedMilliseconds)));
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}
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else
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{
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UpdateTextPosition(elapsedMilliseconds);
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}
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//});
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}
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finally
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{
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_updateLock.Release();
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}
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}
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private void UpdateTextPosition(long elapsedMilliseconds)
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{
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// 根据时间调整滚动步长，确保动画平滑
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int step = (int)(DEFAULT_MOVE_STEP * (elapsedMilliseconds / (double)MoveSleepTime));
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_rectText.X += step * _moveDirection;
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switch (_rollStyle)
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{
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case RollStyle.BackAndForth:
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if (_rectText.X <= 0)
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_moveDirection = 1;
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else if (_rectText.Right >= Width)
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_moveDirection = -1;
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break;
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case RollStyle.LeftToRight:
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if (_rectText.X > Width)
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_rectText.X = -_rectText.Width - 1;
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break;
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case RollStyle.RightToLeft:
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if (_rectText.Right < 0)
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_rectText.X = Width + _rectText.Width + 1;
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break;
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}
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Invalidate();
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}
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private void UpdateTextRectangle()
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{
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if (string.IsNullOrEmpty(Text)) return;
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using (var g = CreateGraphics())
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{
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var size = g.MeasureString(Text, Font);
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_rectText = new Rectangle(
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_isChangeReset ? 0 : _rectText.X,
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(Height - (int)size.Height) / 2 + 1,
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(int)size.Width,
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(int)size.Height
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);
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}
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}
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private void ResetTextPosition()
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{
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if (_rectText == Rectangle.Empty) return;
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|
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switch (_rollStyle)
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{
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case RollStyle.LeftToRight:
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_rectText.X = -_rectText.Width - 1;
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break;
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case RollStyle.RightToLeft:
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_rectText.X = Width + _rectText.Width + 1;
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break;
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default:
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_rectText.X = 0;
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break;
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}
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}
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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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if (_rectText != Rectangle.Empty)
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{
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e.Graphics.SetGDIHigh();
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|
using (var brush = new SolidBrush(ForeColor))
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|
{
|
|
e.Graphics.DrawString(Text, Font, brush, _rectText.Location);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public enum RollStyle
|
|
{
|
|
LeftToRight,
|
|
RightToLeft,
|
|
BackAndForth
|
|
}
|
|
|
|
}
|