using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Text;
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using System.Linq;
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using System.Windows.Forms;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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namespace IStation.WinFormUI
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{
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/// <summary>
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/// 自定义TreeList控件
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/// </summary>
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public partial class CTreeList : TreeView
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{
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public CTreeList()
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{
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InitializeComponent();
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this.ItemHeight = 200;
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this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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this.DrawMode = TreeViewDrawMode.OwnerDrawAll;
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this.ShowLines = true;
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}
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#region 属性
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private bool _isDrawBorder = false;
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/// <summary>
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/// 是否绘制边框
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/// </summary>
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[Description("是否绘制边框"), Category("XOProperty")]
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public bool IsDrawBorder
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{
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get
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{
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return _isDrawBorder;
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}
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set
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{
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if (_isDrawBorder != value)
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{
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_isDrawBorder = value;
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this.Invalidate();
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}
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}
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}
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private Color _borderColor = Color.Transparent;
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/// <summary>
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/// 绘制节点边框的颜色
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/// </summary>
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[Description("绘制节点边框的颜色"), Category("XOProperty")]
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public Color BorderColor
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{
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get
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{
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return _borderColor;
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}
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set
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{
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if (_borderColor != value)
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{
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_borderColor = value;
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this.Invalidate();
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}
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}
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}
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private Color _nodeBgColor = Color.FromArgb(242, 242, 242);
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/// <summary>
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/// 绘制Node的背景色
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/// </summary>
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[Description("绘制Node的背景色"), Category("XOProperty")]
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public Color NodeBgColor
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{
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get
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{
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return _nodeBgColor;
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}
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set
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{
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if (_nodeBgColor != value)
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{
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_nodeBgColor = value;
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this.Invalidate();
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}
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}
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}
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private Color _textColor = Color.White;
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/// <summary>
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/// 绘制文本的颜色
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/// </summary>
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[Description("绘制Text的背景色"), Category("XOProperty")]
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public Color TextColor
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{
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get
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{
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return _textColor;
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}
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set
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{
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if (_textColor != value)
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{
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_textColor = value;
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this.Invalidate();
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}
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}
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}
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private Color _selectedBorderColor = Color.Transparent;
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/// <summary>
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/// 绘制选中节点边框的颜色
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/// </summary>
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[Description("绘制选中节点边框的颜色"), Category("XOProperty")]
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public Color SelectedBorderColor
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{
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get
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{
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return _selectedBorderColor;
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}
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set
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{
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if (_selectedBorderColor != value)
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{
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_selectedBorderColor = value;
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this.Invalidate();
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}
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}
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}
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private Color _selectedTextColor = Color.White;
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/// <summary>
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/// 选中Node文字颜色
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/// </summary>
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[Description("选中Node文字颜色"), Category("XOProperty")]
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public Color SelectedTextColor
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{
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get
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{
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return _selectedTextColor;
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}
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set
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{
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if (_selectedTextColor != value)
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{
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_selectedTextColor = value;
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this.Invalidate();
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}
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}
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}
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private Color _selectedBgColor = Color.FromArgb(129, 211, 248);
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/// <summary>
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/// 选中Node的背景颜色
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/// </summary>
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[Description("选中Node背景颜色"), Category("XOProperty")]
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public Color SelectedBgColor
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{
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get
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{
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return _selectedBgColor;
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}
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set
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{
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if (_selectedBgColor != value)
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{
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_selectedBgColor = value;
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this.Invalidate();
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}
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}
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}
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private int _nodelevelWidth = 30;
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/// <summary>
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/// 节点缩进宽度
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/// </summary>
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[Description("节点缩进宽度"), Category("XOProperty")]
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public int ChildNodeLevelWidth
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{
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get
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{
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return _nodelevelWidth;
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}
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set
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{
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if (_nodelevelWidth != value)
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{
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_nodelevelWidth = value;
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this.Invalidate();
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}
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}
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}
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private int _spaceText = 10;
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/// <summary>
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/// 图片与文字的间距
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/// </summary>
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[Description("图片与文字的间距"), Category("XOProperty")]
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public int SpaceText
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{
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get
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{
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return _spaceText;
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}
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set
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{
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if (_spaceText != value)
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{
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_spaceText = value;
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this.Invalidate();
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}
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}
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}
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private int _leftSpaceImg = 10;
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/// <summary>
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/// 图片与左边框的间距
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/// </summary>
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[Description("图片与文字的间距"), Category("XOProperty")]
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public int LeftSpaceImg
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{
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get
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{
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return _leftSpaceImg;
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}
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set
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{
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if (_leftSpaceImg != value)
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{
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_leftSpaceImg = value;
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this.Invalidate();
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}
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}
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}
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private int _leftSpace = 30;
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/// <summary>
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/// 左边距
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/// </summary>
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[Description("左边距"), Category("XOProperty")]
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public int LeftSpace
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{
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get
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{
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return _leftSpace;
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}
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set
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{
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if (_leftSpace != value)
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{
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_leftSpace = value;
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this.Invalidate();
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}
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}
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}
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private int _drawNodeHeight = 180;
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/// <summary>
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/// 绘制的节点的高度
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/// </summary>
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[Description("绘制的节点的高度"), Category("XOProperty")]
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public int DrawNodeHeight
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{
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get
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{
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return _drawNodeHeight;
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}
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set
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{
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if (_drawNodeHeight > ItemHeight)
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_drawNodeHeight = ItemHeight;
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if (_drawNodeHeight != value)
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{
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_drawNodeHeight = value;
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this.Invalidate();
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}
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}
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}
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private Image _butExpandImage = null;
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/// <summary>
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/// 下拉按钮图片
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/// </summary>
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[Description("下拉按钮图片"), Category("XOProperty")]
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public Image ButImage
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{
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get
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{
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return _butExpandImage;
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}
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set
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{
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if (_butExpandImage != value)
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{
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_butExpandImage = value;
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this.Invalidate();
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}
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}
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}
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#endregion
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private List<CTreeNode> _treeNodeList;
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/// <summary>
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/// 节点改变事件
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/// </summary>
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public event Action<CTreeNode> FocusedNodeChangedEvent = null;
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//设置属性
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public void SetNodes(List<CTreeNode> tree)
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{
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if (tree == null||tree.Count<1)
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return;
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_treeNodeList = tree;
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_treeNodeList.ForEach(node =>
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{
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var rootNode = new System.Windows.Forms.TreeNode();
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rootNode.Text = node.Caption;
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rootNode.Tag = node;
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this.Nodes.Add(rootNode);
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});
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}
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private Size ExpandButtonSize = new Size(16, 16);
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/// <summary>
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/// 自定义绘制节点
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/// </summary>
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/// <param name="e"></param>
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private void DrawNodeItem(DrawTreeNodeEventArgs e)
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{
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System.Windows.Forms.TreeNode node = e.Node;
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var model = node.Tag as CTreeNode;
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if (model == null)
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return;
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using (Graphics g = e.Graphics)
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{
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Rectangle rect;
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var am_height = this.DrawNodeHeightAugment();
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rect = new Rectangle(e.Bounds.X, e.Bounds.Y + am_height, (int)(this.Width * model.DrawNodeWidthRatio), DrawNodeHeight);
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var path = BuildGraphicsPath(e.Bounds.Location, (int)(this.Width * model.DrawNodeWidthRatio), DrawNodeHeight);
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//绘制分组的背景
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RenderBackgroundInternalRate(node, g, path);
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Point p_cap = new Point(rect.X + LeftSpace, rect.Y + rect.Height / 2);
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if (node.IsSelected)
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{
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TextRenderer.DrawText(g, model.Caption, new Font(this.Font.FontFamily.Name, this.Font.Size, FontStyle.Regular), p_cap, this.SelectedTextColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
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}
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else
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{
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TextRenderer.DrawText(g, model.Caption, new Font(this.Font.FontFamily.Name, this.Font.Size, FontStyle.Regular), p_cap, this.TextColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
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}
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Point p_value = new Point(rect.Width- (int)(rect.Width * 0.2), rect.Y+rect.Height/2);
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/*if (node.IsSelected)
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{
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TextRenderer.DrawText(g, model.Range, new Font(this.Font.FontFamily.Name, this.Font.Size, FontStyle.Regular), p_value, this.SelectedTextColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
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}
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else
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{
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TextRenderer.DrawText(g, model.Range, new Font(this.Font.FontFamily.Name, this.Font.Size, FontStyle.Regular), p_value, this.TextColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
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}*/
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}
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}
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#region override
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protected override void OnDrawNode(DrawTreeNodeEventArgs e)
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{
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DrawNodeItem(e);
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}
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0x0201)//单击
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{
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int wparam = m.LParam.ToInt32();
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Point point = new Point(LOWORD(wparam), HIWORD(wparam));
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System.Windows.Forms.TreeNode tn = this.GetNodeAt(point);
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if (tn == null)
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{
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base.WndProc(ref m);
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return;
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}
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if (IsChlckNode(tn, point))
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{
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this.SelectedNode = tn;
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}
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}
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base.WndProc(ref m);
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}
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#endregion
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//判断鼠标是否点击在绘制的节点上
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private bool IsChlckNode(System.Windows.Forms.TreeNode node, Point p)
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{
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var model = node.Tag as CTreeNode;
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var am_height = this.DrawNodeHeightAugment();
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var rect = new Rectangle(1, node.Bounds.Y + am_height, this.Width, DrawNodeHeight);
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var a = node.TreeView.Nodes[0];
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return rect.Contains(p);
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}
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//绘制多边形
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private GraphicsPath BuildGraphicsPath(Point basePoint, float width, float height)
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{
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GraphicsPath path = new GraphicsPath();
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path.AddLine(basePoint.X, basePoint.Y, basePoint.X + width, basePoint.Y);
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path.AddLine(basePoint.X + width, basePoint.Y, basePoint.X + width + height/2, basePoint.Y + height/2);
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path.AddLine(basePoint.X + width + height / 2, basePoint.Y + height / 2, basePoint.X + width , basePoint.Y + height );
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path.AddLine(basePoint.X + width , basePoint.Y + height , basePoint.X , basePoint.Y+height );
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path.AddLine(basePoint.X , basePoint.Y + height, basePoint.X, basePoint.Y );
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return path;
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}
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//绘制节点
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internal void RenderBackgroundInternalRate(System.Windows.Forms.TreeNode node, Graphics g, GraphicsPath rect)
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{
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var model = node.Tag as CTreeNode;
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if (node.IsSelected)
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{
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using (var brushAlpha = new SolidBrush(SelectedBgColor))
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{
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g.FillPath(brushAlpha, rect); ;
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}
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}
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else
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{
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using (var brushAlpha = new SolidBrush(model.Color))
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{
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g.FillPath(brushAlpha, rect);
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}
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}
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}
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//绘制节点高度的增量
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private int DrawNodeHeightAugment()
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{
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if (DrawNodeHeight >= ItemHeight)
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return 0;
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return (ItemHeight - DrawNodeHeight) / 2;
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}
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private static int LOWORD(int value)
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{
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return value & 0xFFFF;
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}
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private static int HIWORD(int value)
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{
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return value >> 16;
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}
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private CTreeNode _currentClickNode;
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private void CTreeList_AfterSelect(object sender, TreeViewEventArgs e)
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{
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if (e.Node == null)
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return;
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var nodeData = e.Node.Tag as CTreeNode;
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if (nodeData == null)
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return;
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if (nodeData.IsReadOnly)
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return;
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_currentClickNode = nodeData;
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if (FocusedNodeChangedEvent != null)
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FocusedNodeChangedEvent.Invoke(nodeData);
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}
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public CTreeNode GetFocusedRow()
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{
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return _currentClickNode;
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}
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/// <summary>
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/// 自定义创建图片的副本（若PixelFormat为索引像素格式会抛异常））
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/// </summary>
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/// <param name="img"></param>
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/// <param name="format">默认Format32bppArgb</param>
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/// <returns></returns>
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private static Image CloneC(Image img, PixelFormat format = PixelFormat.Format32bppArgb)
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{
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var bmp = new Bitmap(img.Width, img.Height, format);
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using (var g = Graphics.FromImage(bmp))
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{
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g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
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g.DrawImage(img, new Rectangle(0, 0, bmp.Width, bmp.Height));
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}
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return bmp;
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}
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}
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}
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