307 lines
9.7 KiB
C#
307 lines
9.7 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.Drawing;
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using System.Drawing.Drawing2D;
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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 ControlBase : UserControl
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{
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/// <summary>
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/// The is radius
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/// </summary>
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private bool _isRadius = false;
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/// <summary>
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/// The corner radius
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/// </summary>
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private int _cornerRadius = 24;
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/// <summary>
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/// The is show rect
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/// </summary>
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private bool _isShowRect = false;
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/// <summary>
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/// The rect color
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/// </summary>
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private Color _rectColor = Color.FromArgb(220, 220, 220);
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/// <summary>
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/// The rect width
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/// </summary>
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private int _rectWidth = 1;
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/// <summary>
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/// The fill color
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/// </summary>
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private Color _fillColor = Color.Transparent;
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// 缓存绘图对象，避免重复创建（线程安全：UI线程单例）
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private SolidBrush _fillBrush;
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private Pen _rectPen;
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private bool _isRegionDirty = true; // 标记区域是否需要重新计算
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#region 公共属性（替换Refresh为Invalidate）
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[Description("是否圆角"), Category("自定义")]
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public virtual bool IsRadius
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{
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get => _isRadius;
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set
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{
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if (_isRadius == value) return;
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_isRadius = value;
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_isRegionDirty = true;
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Invalidate();
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}
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}
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/// <summary>
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/// 圆角角度
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/// </summary>
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/// <value>The coner radius.</value>
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[Description("圆角角度"), Category("自定义")]
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public virtual int ConerRadius
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{
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get => _cornerRadius;
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set
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{
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value = Math.Max(value, 1);
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if (_cornerRadius == value) return;
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_cornerRadius = value;
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_isRegionDirty = true;
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Invalidate();
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}
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}
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/// <summary>
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/// 是否显示边框
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/// </summary>
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/// <value><c>true</c> if this instance is show rect; otherwise, <c>false</c>.</value>
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[Description("是否显示边框"), Category("自定义")]
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public virtual bool IsShowRect
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{
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get => _isShowRect;
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set
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{
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if (_isShowRect == value) return;
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_isShowRect = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 边框颜色
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/// </summary>
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/// <value>The color of the rect.</value>
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[Description("边框颜色"), Category("自定义")]
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public virtual Color RectColor
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{
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get => _rectColor;
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set
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{
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if (_rectColor == value) return;
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_rectColor = value;
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// 重置画笔，下次使用时创建
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_rectPen?.Dispose();
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_rectPen = null;
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Invalidate();
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}
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}
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/// <summary>
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/// 边框宽度
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/// </summary>
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/// <value>The width of the rect.</value>
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[Description("边框宽度"), Category("自定义")]
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public virtual int RectWidth
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{
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get => _rectWidth;
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set
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{
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if (_rectWidth == value) return;
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_rectWidth = value;
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// 重置画笔，下次使用时创建
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_rectPen?.Dispose();
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_rectPen = null;
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Invalidate();
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}
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}
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/// <summary>
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/// 当使用边框时填充颜色，当值为背景色或透明色或空值则不填充
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/// </summary>
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/// <value>The color of the fill.</value>
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[Description("当使用边框时填充颜色，当值为背景色或透明色或空值则不填充"), Category("自定义")]
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public virtual Color FillColor
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{
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get => _fillColor;
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set
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{
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if (_fillColor == value) return;
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_fillColor = value;
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// 重置画刷，下次使用时创建
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_fillBrush?.Dispose();
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_fillBrush = null;
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Invalidate();
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}
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}
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#endregion
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/// <summary>
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/// Initializes a new instance of the <see cref="UCControlBase" /> class.
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/// </summary>
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public ControlBase()
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{
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InitializeComponent();
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// 优化双缓冲设置
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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 |
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ControlStyles.OptimizedDoubleBuffer, true);
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UpdateStyles(); // 应用样式设置
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}
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#region 核心优化：重写OnPaint
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protected override void OnPaint(PaintEventArgs e)
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{
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if (!Visible) return;
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// 1. 仅在区域脏时更新Region
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if (_isRegionDirty)
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{
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UpdateWindowRegion();
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_isRegionDirty = false;
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}
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// 2. 优化绘图质量
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e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
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e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
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e.Graphics.Clear(BackColor); // 统一背景清除，避免闪烁
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// 3. 绘制逻辑：仅在需要时创建GraphicsPath
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if (_isShowRect || (_fillColor != Color.Empty && _fillColor != Color.Transparent && _fillColor != BackColor))
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{
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using (var graphicsPath = CreateRoundedRectPath(ClientRectangle))
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{
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// 绘制填充
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if (_fillColor != Color.Empty && _fillColor != Color.Transparent && _fillColor != BackColor)
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{
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if (_fillBrush == null)
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{
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_fillBrush = new SolidBrush(_fillColor);
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}
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e.Graphics.FillPath(_fillBrush, graphicsPath);
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}
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// 绘制边框
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if (_isShowRect)
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{
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if (_rectPen == null)
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{
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_rectPen = new Pen(_rectColor, Math.Max(1, _rectWidth)); // 避免宽度为0
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}
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e.Graphics.DrawPath(_rectPen, graphicsPath);
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}
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}
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}
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base.OnPaint(e);
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}
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#endregion
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#region 辅助方法（优化逻辑+释放资源）
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/// <summary>
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/// 仅在区域脏时更新WindowRegion
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/// </summary>
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private void UpdateWindowRegion()
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{
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if (_isRadius)
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{
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using (var path = CreateRoundedRectPath(new Rectangle(-1, -1, Width + 1, Height)))
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{
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Region = new Region(path);
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}
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}
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else
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{
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// 恢复矩形区域
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using (var path = new GraphicsPath())
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{
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path.AddRectangle(ClientRectangle);
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Region = new Region(path);
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}
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}
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}
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/// <summary>
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/// 创建圆角路径
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/// </summary>
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/// <param name="rect">绘制矩形</param>
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/// <returns>GraphicsPath</returns>
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private GraphicsPath CreateRoundedRectPath(Rectangle rect)
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{
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var path = new GraphicsPath();
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if (_isRadius && _cornerRadius > 0)
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{
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// 优化圆角计算：避免偏移错误
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int radius = Math.Min(_cornerRadius, Math.Min(rect.Width, rect.Height) / 2);
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path.AddArc(rect.X, rect.Y, radius, radius, 180f, 90f);
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path.AddArc(rect.Right - radius, rect.Y, radius, radius, 270f, 90f);
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path.AddArc(rect.Right - radius, rect.Bottom - radius, radius, radius, 0f, 90f);
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path.AddArc(rect.X, rect.Bottom - radius, radius, radius, 90f, 90f);
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path.CloseFigure();
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}
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else
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{
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path.AddRectangle(rect);
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}
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return path;
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}
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/// <summary>
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/// 释放非托管资源
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/// </summary>
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/// <param name="disposing">是否手动释放</param>
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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// 释放绘图对象
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_fillBrush?.Dispose();
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_rectPen?.Dispose();
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components?.Dispose();
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}
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base.Dispose(disposing);
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}
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/// <summary>
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/// 控件大小变化时标记区域脏
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/// </summary>
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/// <param name="e">尺寸参数</param>
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protected override void OnSizeChanged(EventArgs e)
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{
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base.OnSizeChanged(e);
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_isRegionDirty = true;
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Invalidate();
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}
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#endregion
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/// <summary>
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/// 屏蔽不必要的消息
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/// </summary>
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/// <param name="m">Windows消息</param>
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protected override void WndProc(ref Message m)
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{
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if (m.Msg != 20)
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{
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base.WndProc(ref m);
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}
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}
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}
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}
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