using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Windows.Forms;
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namespace DPumpHydr.WinFrmUI.WenSkin.Controls
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{
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public class WenListBox : ListBox
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{
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public WenListBox()
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{
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base.SetStyle(
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//ControlStyles.UserPaint |
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ControlStyles.DoubleBuffer |
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ControlStyles.OptimizedDoubleBuffer |
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ControlStyles.AllPaintingInWmPaint |
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ControlStyles.ResizeRedraw |
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ControlStyles.SupportsTransparentBackColor, true);
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base.UpdateStyles();
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this.DrawMode = DrawMode.OwnerDrawFixed;
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this.IntegralHeight = false;
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ItemHeight = 23;
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}
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#region 委托事件
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[Category("Wen"), Description("项被点击事件")]
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public event WenListBoxEventHandler ItemClick;
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#endregion
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#region 私有属性
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//选中项改变之前的选中项索引
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private int selectBefore = -1;
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private int MouseItemIndex;
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private bool line = true;
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private bool radioBox = true;
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private Color oneRowColor = Color.DeepSkyBlue;
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private Color towRowColor = Color.Aquamarine;
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private Color selectedRowColor = Color.DarkCyan;
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private Color mouseMoveRowColor = Color.Cyan;
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private int itemHeight;
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#endregion
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#region 公有属性
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[Category("Wen"), Description("是否增加序号"), DefaultValue(true)]
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public bool Line { get => line; set { line = value; this.Invalidate(); } }
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[Category("Wen"), Description("是否增加选框"), DefaultValue(true)]
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public bool RadioBox { get => radioBox; set { radioBox = value; this.Invalidate(); } }
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[Category("Wen"), Description("奇数行颜色"), DefaultValue(typeof(Color), "DeepSkyBlue")]
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public Color OneRowColor { get => oneRowColor; set { oneRowColor = value; this.Invalidate(); } }
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[Category("Wen"), Description("偶数行颜色"), DefaultValue(typeof(Color), "Aquamarine")]
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public Color TowRowColor { get => towRowColor; set { towRowColor = value; this.Invalidate(); } }
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[Category("Wen"), Description("选中颜色"), DefaultValue(typeof(Color), "DarkCyan")]
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public Color SelectedRowColor { get => selectedRowColor; set { selectedRowColor = value; this.Invalidate(); } }
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[Category("Wen"), Description("鼠标移动行颜色"), DefaultValue(typeof(Color), "Cyan")]
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public Color MouseMoveRowColor { get => mouseMoveRowColor; set { mouseMoveRowColor = value; this.Invalidate(); } }
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#endregion
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#region 数据绑定
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[Category("WenData"), Description("绑定数据列"), DefaultValue(null)]
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public string ColumnName { get; set; }
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private object dataSource { get; set; }
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[Browsable(false)]
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public new object DataSource
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{
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get => dataSource;
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set
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{
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if (value != null)
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{
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dataSource = value;
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DataBind();
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}
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}
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}
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private void DataBind()
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{
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if (dataSource == null)
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return;
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this.Items.Clear();
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//分类数据绑定
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switch (dataSource)
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{
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case DataSet ds:
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DataBindDataTable(ds.Tables[0]);
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break;
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case DataTable dt:
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DataBindDataTable(dt);
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break;
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case IList ilist:
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if (string.IsNullOrWhiteSpace(ColumnName))
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{
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foreach (var li in ilist)
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{
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List<System.Reflection.PropertyInfo> propertyInfos = new List<System.Reflection.PropertyInfo>(li.GetType().GetProperties());
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string value = propertyInfos.Find(a => a.Name.ToUpper() == ColumnName.ToUpper())?.GetValue(li, null)?.ToString();
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Items.Add(value);
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}
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}
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else
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{
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foreach (var li in ilist)
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{
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string value = li.GetType().GetProperties()[0].GetValue(li, null)?.ToString();
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Items.Add(value);
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}
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}
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break;
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default:
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break;
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}
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//绑定数据
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void DataBindDataTable(DataTable dt)
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{
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if (string.IsNullOrWhiteSpace(ColumnName))
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foreach (DataRow dr in dt.Rows)
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{
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Items.Add(dr[0]);
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}
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else
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foreach (DataRow dr in dt.Rows)
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{
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Items.Add(dr[ColumnName]);
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}
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}
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}
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#endregion
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#region 重置属性或者重写属性
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[Category("Wen"), Description("设置单项高度"), DefaultValue(23)]
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public new int ItemHeight { get => itemHeight; set { base.ItemHeight = value; itemHeight = value; } }
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#endregion
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#region 执行重绘
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//重绘指定项
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protected override void OnDrawItem(DrawItemEventArgs e)
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{
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//base.OnDrawItem(e);
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if (Items.Count == 0 || e.Index < 0)
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return;
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Graphics g = e.Graphics;
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Rectangle rec = GetItemRectangle(e.Index);
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if (GetSelected(e.Index))
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{
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rec.Inflate(0, -2);
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ItemDraw(e.Index, g, rec, SelectedRowColor, e);
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}
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else if (e.Index == MouseItemIndex)
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{
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ItemDraw(e.Index, g, rec, MouseMoveRowColor, e);
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}
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else if (e.Index % 2 != 1)
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{
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ItemDraw(e.Index, g, rec, OneRowColor, e);
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}
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else
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{
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ItemDraw(e.Index, g, rec, TowRowColor, e);
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}
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}
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//刷新指定项目
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private void ItemDraw(int index, Graphics g, Rectangle rec, Color c, DrawItemEventArgs e)
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{
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ControlHelper.SetGDIHigh(g);
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using Brush backColor = new SolidBrush(c);
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g.FillRectangle(backColor, rec);
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using Brush brush = new SolidBrush(e.ForeColor);
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int radioWidth = 0;
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if (RadioBox)
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{
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radioWidth = 20;
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g.DrawEllipse(new Pen(brush) { Width = 2 }, new Rectangle(rec.X, (ItemHeight - 15) / 2 + rec.Y, 15, 15));
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if (GetSelected(index))
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g.FillEllipse(brush, new Rectangle(rec.X + 5, (ItemHeight - 5) / 2 + rec.Y, 5, 5));
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}
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//绘制文字
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if (Line)
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{
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Rectangle recLine = new Rectangle(rec.X + radioWidth, rec.Y, 50 - radioWidth, this.ItemHeight);
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Rectangle recText = new Rectangle(rec.X + 50, rec.Y, rec.Width - 50, this.ItemHeight);
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g.DrawString((index + 1).ToString(), Font, brush, recLine, ControlHelper.StringConters);
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g.DrawString(Items[index]?.ToString(), Font, brush, recText, ControlHelper.StringConters);
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}
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else
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{
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Rectangle recText = new Rectangle(rec.X + radioWidth, rec.Y, rec.Width - radioWidth, this.ItemHeight);
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g.DrawString(Items[index]?.ToString(), Font, brush, recText, ControlHelper.StringConters);
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}
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}
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//鼠标移动
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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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int index = IndexFromPoint(e.Location);
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if (index < 0)
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return;
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if (MouseItemIndex != index)
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{
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int indexBefore = MouseItemIndex;
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MouseItemIndex = index;
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this.RefreshItem(index);
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this.RefreshItem(indexBefore);
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}
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}
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//刷新指定索引项
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protected override void RefreshItem(int index)
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{
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if (index < 0 || Items.Count == 0)
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return;
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Graphics g = CreateGraphics();
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Rectangle rec = GetItemRectangle(index);
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g.SetClip(new Rectangle(rec.X, rec.Y + 1, rec.Width, rec.Height - 1));
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if (SelectedIndex == index)
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OnDrawItem(new DrawItemEventArgs(g, Font, rec, index, DrawItemState.Selected, Color.White, this.SelectedRowColor));
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else
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OnDrawItem(new DrawItemEventArgs(g, Font, rec, index, DrawItemState.None, this.ForeColor, this.SelectedRowColor));
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}
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//鼠标移开事件
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protected override void OnMouseLeave(EventArgs e)
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{
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base.OnMouseLeave(e);
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int index = MouseItemIndex;
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MouseItemIndex = -1;
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RefreshItem(index);
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}
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//选中索引变化
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protected override void OnSelectedIndexChanged(EventArgs e)
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{
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base.OnSelectedIndexChanged(e);
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if (selectBefore != -1)
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{
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RefreshItem(selectBefore);
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}
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selectBefore = SelectedIndex;
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object item = this.SelectedItem;
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ItemClick?.Invoke(this, new WenListBoxEventArgs(item));
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}
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#endregion
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}
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public delegate void WenListBoxEventHandler(object sender, WenListBoxEventArgs e);
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public class WenListBoxEventArgs : EventArgs
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{
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public WenListBoxEventArgs(object item)
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{
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this.Item = item;
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}
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public object Item { get; set; }
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}
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}
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