1521 lines
54 KiB
C#
1521 lines
54 KiB
C#
/******************************************************************************
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* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
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* CopyRight (C) 2012-2024 ShenYongHua(沈永华).
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* QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
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*
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* Blog: https://www.cnblogs.com/yhuse
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* Gitee: https://gitee.com/yhuse/SunnyUI
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* GitHub: https://github.com/yhuse/SunnyUI
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*
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* SunnyUI.dll can be used for free under the GPL-3.0 license.
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* If you use this code, please keep this note.
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* 如果您使用此代码，请保留此说明。
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******************************************************************************
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* 文件名称: UITreeView.cs
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* 文件说明: 树形列表
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* 当前版本: V3.1
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* 创建日期: 2020-05-05
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*
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* 2020-05-05: V2.2.5 增加文件
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* 2020-07-07: V2.2.6 全部重写，增加圆角，CheckBoxes等
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* 2020-08-12: V2.2.7 更新可设置背景色
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* 2021-07-19: V3.0.5 调整了显示CheckBoxes时图片位置
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* 2021-08-26: V3.0.6 CheckBoxes增加三态，感谢群友：笑口常开
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* 2022-01-05: V3.0.9 TreeNodeStateSync: 节点点击时同步父节点和子节点的状态
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* 2022-03-19: V3.1.1 重构主题配色
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* 2022-04-01: V3.1.2 增加水平滚动条
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* 2022-04-01: V3.1.2 自定义行颜色，可通过代码给颜色值，SetNodePainter
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* 2022-05-15: V3.1.8 修复了一个设计期显示错误
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* 2022-05-15: V3.1.8 增加了点击文字改变CheckBox状态的NodeClickChangeCheckBoxes
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* 2022-10-28: V3.2.6 TreeNode支持imagekey绑定图标
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* 2022-11-03: V3.2.6 增加了可设置垂直滚动条宽度的属性
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* 2022-12-06: V3.3.0 增加了可自定义行的颜色
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* 2023-03-13: V3.3.3 增加MouseDoubleClick和MouseClick事件
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* 2023-03-26: V3.3.4 修改LabelEdit属性
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* 2023-05-13: V3.3.6 重构DrawString函数
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* 2023-07-02: V3.3.9 屏蔽DrawMode属性，默认为OwnerDrawAll
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* 2023-11-13: V3.5.2 重构主题
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* 2024-01-01: V3.6.2 增加可修改滚动条颜色
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* 2024-01-20: V3.6.3 自定义行颜色，可通过代码给颜色值，SetNodePainter，增加选中颜色
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* 2024-05-27: V3.6.6 防止控件闪烁
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* 2024-08-06: V3.6.8 不显示连线时，重绘节点前展开与收缩的图标
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******************************************************************************/
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using System;
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using System.Collections;
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using System.Collections.Concurrent;
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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.Drawing.Design;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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[DefaultEvent("AfterSelect")]
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[DefaultProperty("Nodes")]
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public sealed class UITreeView : UIPanel, IToolTip
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{
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private UIScrollBar Bar;
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private UIHorScrollBar HBar;
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private bool ScrollBarVisible;
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private bool HScrollBarVisible;
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private TreeViewEx view;
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public UITreeView()
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{
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InitializeComponent();
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SetStyleFlags(true, false);
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ShowText = false;
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view.HBar = HBar;
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view.Bar = Bar;
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SetScrollInfo();
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view.BeforeCheck += View_BeforeCheck;
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view.AfterCheck += View_AfterCheck;
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view.BeforeCollapse += View_BeforeCollapse;
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view.AfterCollapse += View_AfterCollapse;
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view.BeforeExpand += View_BeforeExpand;
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view.AfterExpand += View_AfterExpand;
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view.DrawNode += View_DrawNode;
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view.ItemDrag += View_ItemDrag;
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view.NodeMouseHover += View_NodeMouseHover;
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view.BeforeSelect += View_BeforeSelect;
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view.AfterSelect += View_AfterSelect;
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view.NodeMouseClick += View_NodeMouseClick;
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view.NodeMouseDoubleClick += View_NodeMouseDoubleClick;
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view.MouseUp += View_MouseUp;
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view.MouseDown += View_MouseDown;
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view.MouseMove += View_MouseMove;
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view.MouseEnter += View_MouseEnter;
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view.MouseLeave += View_MouseLeave;
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view.KeyPress += View_KeyPress;
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view.KeyDown += View_KeyDown;
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view.KeyUp += View_KeyUp;
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view.AfterLabelEdit += View_AfterLabelEdit;
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view.MouseDoubleClick += View_MouseDoubleClick;
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view.MouseClick += View_MouseClick;
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}
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private Color scrollBarColor = Color.FromArgb(80, 160, 255);
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/// <summary>
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/// 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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[Description("滚动条填充颜色"), Category("SunnyUI")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color ScrollBarColor
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{
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get => scrollBarColor;
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set
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{
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scrollBarColor = value;
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HBar.HoverColor = HBar.PressColor = HBar.ForeColor = value;
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Bar.HoverColor = Bar.PressColor = Bar.ForeColor = value;
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HBar.Style = Bar.Style = UIStyle.Custom;
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Invalidate();
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}
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}
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private Color scrollBarRectColor = Color.FromArgb(80, 160, 255);
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/// <summary>
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/// 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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[Description("滚动条边框颜色"), Category("SunnyUI")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color ScrollBarRectColor
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{
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get => scrollBarRectColor;
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set
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{
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scrollBarRectColor = value;
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Bar.RectColor = value;
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HBar.Style = Bar.Style = UIStyle.Custom;
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Invalidate();
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}
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}
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private Color scrollBarBackColor = Color.FromArgb(243, 249, 255);
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/// <summary>
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/// 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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[Description("滚动条背景颜色"), Category("SunnyUI")]
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[DefaultValue(typeof(Color), "243, 249, 255")]
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public Color ScrollBarBackColor
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{
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get => scrollBarBackColor;
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set
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{
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scrollBarBackColor = value;
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HBar.FillColor = value;
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Bar.FillColor = value;
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HBar.Style = Bar.Style = UIStyle.Custom;
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Invalidate();
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}
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}
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/// <summary>
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/// 滚动条主题样式
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/// </summary>
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[DefaultValue(true), Description("滚动条主题样式"), Category("SunnyUI")]
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public bool ScrollBarStyleInherited
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{
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get => HBar != null && HBar.Style == UIStyle.Inherited;
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set
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{
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if (value)
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{
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if (HBar != null) HBar.Style = UIStyle.Inherited;
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if (Bar != null) Bar.Style = UIStyle.Inherited;
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scrollBarColor = UIStyles.Blue.GridBarForeColor;
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scrollBarBackColor = UIStyles.Blue.GridBarFillColor;
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scrollBarRectColor = Bar.RectColor = UIStyles.Blue.RectColor;
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}
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}
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}
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public override void SetDPIScale()
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{
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base.SetDPIScale();
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view.SetDPIScale();
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}
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public void CheckedAll()
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{
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view.CheckedAll();
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}
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public void UnCheckedAll()
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{
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view.UnCheckedAll();
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}
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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view?.Dispose();
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Bar?.Dispose();
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HBar?.Dispose();
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}
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public event NodeLabelEditEventHandler AfterLabelEdit;
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public new event EventHandler MouseLeave;
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public new event EventHandler MouseEnter;
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public new event MouseEventHandler MouseMove;
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public new event MouseEventHandler MouseDown;
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public new event MouseEventHandler MouseUp;
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public new event KeyPressEventHandler KeyPress;
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public new event KeyEventHandler KeyDown;
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public new event KeyEventHandler KeyUp;
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public new event MouseEventHandler MouseDoubleClick;
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public new event MouseEventHandler MouseClick;
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private void View_MouseClick(object sender, MouseEventArgs e)
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{
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MouseClick?.Invoke(this, e);
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}
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private void View_MouseDoubleClick(object sender, MouseEventArgs e)
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{
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MouseDoubleClick?.Invoke(this, e);
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}
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private int scrollBarWidth = 0;
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[DefaultValue(0), Category("SunnyUI"), Description("垂直滚动条宽度，最小为原生滚动条宽度")]
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public int ScrollBarWidth
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{
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get => scrollBarWidth;
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set
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{
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scrollBarWidth = value;
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SetScrollInfo();
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}
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}
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private int scrollBarHandleWidth = 6;
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[DefaultValue(6), Category("SunnyUI"), Description("垂直滚动条滑块宽度，最小为原生滚动条宽度")]
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public int ScrollBarHandleWidth
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{
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get => scrollBarHandleWidth;
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set
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{
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scrollBarHandleWidth = value;
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if (Bar != null) Bar.FillWidth = value;
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}
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}
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protected override void OnContextMenuStripChanged(EventArgs e)
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{
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base.OnContextMenuStripChanged(e);
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if (view != null) view.ContextMenuStrip = ContextMenuStrip;
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}
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public int DrawLeft(TreeNode node)
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{
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if (view == null || node == null) return 0;
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return view.DrawLeft(node);
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}
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public void SetNodePainter(TreeNode node, Color backColor, Color foreColor)
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{
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if (view.IsNull()) return;
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if (view.Painter.NotContainsKey(node))
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{
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view.Painter.TryAdd(node, new UITreeNodePainter());
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}
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view.Painter[node].BackColor = backColor;
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view.Painter[node].ForeColor = foreColor;
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view.Painter[node].HaveHoveColor = false;
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view.Invalidate();
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}
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public void SetNodePainter(TreeNode node, Color backColor, Color foreColor, Color hoverColor, Color selectedColor, Color selectedForeColor)
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{
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if (view.IsNull()) return;
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if (view.Painter.NotContainsKey(node))
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{
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view.Painter.TryAdd(node, new UITreeNodePainter());
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}
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view.Painter[node].BackColor = backColor;
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view.Painter[node].ForeColor = foreColor;
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view.Painter[node].HoverColor = hoverColor;
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view.Painter[node].SelectedColor = selectedColor;
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view.Painter[node].SelectedForeColor = selectedForeColor;
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view.Painter[node].HaveHoveColor = true;
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view.Invalidate();
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}
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public void ClearNodePainter(TreeNode node)
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{
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if (view.IsNull()) return;
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if (view.Painter.ContainsKey(node))
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{
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view.Painter.TryRemove(node, out _);
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view.Invalidate();
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}
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}
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public void ClearAllNodePainter(TreeNode node)
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{
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if (view.IsNull()) return;
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view.Painter.Clear();
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view.Invalidate();
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}
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[Description("节点点击时同步父节点和子节点的状态"), Category("SunnyUI")]
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[DefaultValue(true)]
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public bool TreeNodeStateSync
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{
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get => view.TreeNodeStateSync;
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set => view.TreeNodeStateSync = value;
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}
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[Description("点击文字改变CheckBox状态"), Category("SunnyUI")]
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[DefaultValue(false)]
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public bool NodeClickChangeCheckBoxes
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{
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get => view.NodeClickChangeCheckBoxes;
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set => view.NodeClickChangeCheckBoxes = value;
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}
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private void View_AfterLabelEdit(object sender, NodeLabelEditEventArgs e)
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{
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AfterLabelEdit?.Invoke(this, e);
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}
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/// <summary>
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/// 需要额外设置ToolTip的控件
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/// </summary>
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/// <returns>控件</returns>
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public Control ExToolTipControl()
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{
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return view;
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}
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[DefaultValue(false)]
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public bool LabelEdit
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{
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get => view.LabelEdit;
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set => view.LabelEdit = value;
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}
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private void View_KeyUp(object sender, KeyEventArgs e)
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{
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KeyUp?.Invoke(this, e);
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}
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private void View_KeyDown(object sender, KeyEventArgs e)
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{
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KeyDown?.Invoke(this, e);
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}
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private void View_KeyPress(object sender, KeyPressEventArgs e)
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{
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KeyPress?.Invoke(this, e);
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}
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private void View_MouseLeave(object sender, EventArgs e)
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{
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MouseLeave?.Invoke(this, e);
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}
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private void View_MouseEnter(object sender, EventArgs e)
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{
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MouseEnter?.Invoke(this, e);
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}
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private void View_MouseMove(object sender, MouseEventArgs e)
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{
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MouseMove?.Invoke(this, e);
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}
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private void View_MouseDown(object sender, MouseEventArgs e)
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{
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MouseDown?.Invoke(this, e);
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}
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private void View_MouseUp(object sender, MouseEventArgs e)
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{
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MouseUp?.Invoke(this, e);
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}
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[Browsable(false)]
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public TreeView TreeView => view;
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/// <summary>
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/// 设置主题样式
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/// </summary>
|
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/// <param name="uiColor">主题样式</param>
|
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public override void SetStyleColor(UIBaseStyle uiColor)
|
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{
|
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base.SetStyleColor(uiColor);
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if (view != null)
|
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{
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selectedForeColor = view.SelectedForeColor = uiColor.TreeViewSelectedForeColor;
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view.FillColor = view.BackColor = fillColor = uiColor.TreeViewBackColor;
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rectColor = uiColor.RectColor;
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view.SelectedColor = selectedColor = uiColor.TreeViewSelectedColor;
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view.ForeColor = foreColor = uiColor.TreeViewForeColor;
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hoverColor = view.HoverColor = uiColor.TreeViewHoverColor;
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LineColor = uiColor.TreeViewLineColor;
|
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}
|
||
|
||
if (Bar != null)
|
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{
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Bar.FillColor = uiColor.TreeViewBarFillColor;
|
||
Bar.ForeColor = uiColor.TreeViewBarForeColor;
|
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Bar.HoverColor = uiColor.ButtonFillHoverColor;
|
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Bar.PressColor = uiColor.ButtonFillPressColor;
|
||
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scrollBarRectColor = Bar.RectColor = uiColor.RectColor;
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scrollBarColor = uiColor.GridBarForeColor;
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scrollBarBackColor = uiColor.GridBarFillColor;
|
||
}
|
||
|
||
if (HBar != null)
|
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{
|
||
HBar.FillColor = uiColor.TreeViewBarFillColor;
|
||
HBar.ForeColor = uiColor.TreeViewBarForeColor;
|
||
HBar.HoverColor = uiColor.ButtonFillHoverColor;
|
||
HBar.PressColor = uiColor.ButtonFillPressColor;
|
||
scrollBarColor = uiColor.GridBarForeColor;
|
||
scrollBarBackColor = uiColor.GridBarFillColor;
|
||
}
|
||
}
|
||
|
||
private Color hoverColor = Color.FromArgb(220, 236, 255);
|
||
[DefaultValue(typeof(Color), "220, 236, 255")]
|
||
public Color HoverColor
|
||
{
|
||
get => hoverColor;
|
||
set
|
||
{
|
||
view.HoverColor = hoverColor = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
private Color selectedColor = Color.FromArgb(80, 160, 255);
|
||
[DefaultValue(typeof(Color), "80, 160, 255")]
|
||
public Color SelectedColor
|
||
{
|
||
get => selectedColor;
|
||
set
|
||
{
|
||
view.SelectedColor = selectedColor = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
public Color selectedForeColor = Color.White;
|
||
[DefaultValue(typeof(Color), "White")]
|
||
public Color SelectedForeColor
|
||
{
|
||
get => selectedForeColor;
|
||
set
|
||
{
|
||
view.SelectedForeColor = selectedForeColor = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
protected override void AfterSetFillColor(Color color)
|
||
{
|
||
base.AfterSetFillColor(color);
|
||
if (view != null)
|
||
{
|
||
view.FillColor = color;
|
||
view.BackColor = color;
|
||
}
|
||
|
||
if (Bar != null)
|
||
{
|
||
Bar.FillColor = color;
|
||
}
|
||
|
||
if (HBar != null)
|
||
{
|
||
HBar.FillColor = color;
|
||
}
|
||
}
|
||
|
||
protected override void AfterSetForeColor(Color color)
|
||
{
|
||
base.AfterSetForeColor(color);
|
||
view.ForeColor = color;
|
||
}
|
||
|
||
[Browsable(false)]
|
||
[DefaultValue(TreeViewDrawMode.OwnerDrawAll)]
|
||
public TreeViewDrawMode DrawMode
|
||
{
|
||
get => view.DrawMode;
|
||
set => view.DrawMode = value;
|
||
}
|
||
|
||
[DefaultValue(false)]
|
||
public bool CheckBoxes
|
||
{
|
||
get => view.CheckBoxes;
|
||
set => view.CheckBoxes = value;
|
||
}
|
||
|
||
[DefaultValue(false)]
|
||
public bool ShowLines
|
||
{
|
||
get => view.ShowLinesEx;
|
||
set => view.ShowLinesEx = value;
|
||
}
|
||
|
||
[DefaultValue(28)]
|
||
public int ItemHeight
|
||
{
|
||
get => view.ItemHeight;
|
||
set => view.ItemHeight = value;
|
||
}
|
||
|
||
[Browsable(false)]
|
||
[DefaultValue(null)]
|
||
public TreeNode SelectedNode
|
||
{
|
||
get => view.SelectedNode;
|
||
set => view.SelectedNode = value;
|
||
}
|
||
|
||
[DefaultValue(true)]
|
||
public bool HideSelection
|
||
{
|
||
get => view.HideSelection;
|
||
set => view.HideSelection = value;
|
||
}
|
||
|
||
[DefaultValue(-1)]
|
||
[Localizable(true)]
|
||
[RefreshProperties(RefreshProperties.Repaint)]
|
||
[TypeConverter(typeof(NoneExcludedImageIndexConverter))]
|
||
[Editor("System.Windows.Forms.Design.ImageIndexEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
|
||
typeof(UITypeEditor))]
|
||
[RelatedImageList("ImageList")]
|
||
public int ImageIndex
|
||
{
|
||
get => view.ImageIndex;
|
||
set => view.ImageIndex = value;
|
||
}
|
||
|
||
[Localizable(true)]
|
||
[TypeConverter(typeof(ImageKeyConverter))]
|
||
[Editor("System.Windows.Forms.Design.ImageIndexEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
|
||
typeof(UITypeEditor))]
|
||
[DefaultValue("")]
|
||
[RefreshProperties(RefreshProperties.Repaint)]
|
||
[RelatedImageList("ImageList")]
|
||
public string ImageKey
|
||
{
|
||
get => view.ImageKey;
|
||
set => view.ImageKey = value;
|
||
}
|
||
|
||
[DefaultValue(null)]
|
||
[RefreshProperties(RefreshProperties.Repaint)]
|
||
public ImageList ImageList
|
||
{
|
||
get => view.ImageList;
|
||
set => view.ImageList = value;
|
||
}
|
||
|
||
[DefaultValue(null)]
|
||
public ImageList StateImageList
|
||
{
|
||
get => view.StateImageList;
|
||
set => view.StateImageList = value;
|
||
}
|
||
|
||
[Localizable(true)]
|
||
[DefaultValue(19)]
|
||
public int Indent
|
||
{
|
||
get => view.Indent;
|
||
set => view.Indent = value;
|
||
}
|
||
|
||
[DefaultValue(typeof(Color), "Black")]
|
||
public Color LineColor
|
||
{
|
||
get => view.LineColor;
|
||
set => view.LineColor = value;
|
||
}
|
||
|
||
[DefaultValue("\\")]
|
||
public string PathSeparator
|
||
{
|
||
get => view.PathSeparator;
|
||
set => view.PathSeparator = value;
|
||
}
|
||
|
||
[DefaultValue(-1)]
|
||
[TypeConverter(typeof(NoneExcludedImageIndexConverter))]
|
||
[Localizable(true)]
|
||
[Editor("System.Windows.Forms.Design.ImageIndexEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
|
||
typeof(UITypeEditor))]
|
||
[RelatedImageList("ImageList")]
|
||
public int SelectedImageIndex
|
||
{
|
||
get => view.SelectedImageIndex;
|
||
set => view.SelectedImageIndex = value;
|
||
}
|
||
|
||
[Localizable(true)]
|
||
[TypeConverter(typeof(ImageKeyConverter))]
|
||
[Editor("System.Windows.Forms.Design.ImageIndexEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
|
||
typeof(UITypeEditor))]
|
||
[DefaultValue("")]
|
||
[RefreshProperties(RefreshProperties.Repaint)]
|
||
[RelatedImageList("ImageList")]
|
||
public string SelectedImageKey
|
||
{
|
||
get => view.SelectedImageKey;
|
||
set => view.SelectedImageKey = value;
|
||
}
|
||
|
||
[DefaultValue(false)]
|
||
public bool ShowNodeToolTips
|
||
{
|
||
get => view.ShowNodeToolTips;
|
||
set => view.ShowNodeToolTips = value;
|
||
}
|
||
|
||
[DefaultValue(true)]
|
||
public bool ShowPlusMinus
|
||
{
|
||
get => view.ShowPlusMinus;
|
||
set => view.ShowPlusMinus = value;
|
||
}
|
||
|
||
[DefaultValue(false)]
|
||
[Browsable(false)]
|
||
[EditorBrowsable(EditorBrowsableState.Never)]
|
||
public bool Sorted
|
||
{
|
||
get => view.Sorted;
|
||
set => view.Sorted = value;
|
||
}
|
||
|
||
[Browsable(false)]
|
||
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
||
public IComparer TreeViewNodeSorter
|
||
{
|
||
get => view.TreeViewNodeSorter;
|
||
set => view.TreeViewNodeSorter = value;
|
||
}
|
||
|
||
[Browsable(false)]
|
||
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
||
public TreeNode TopNode
|
||
{
|
||
get => view.TopNode;
|
||
set => view.TopNode = value;
|
||
}
|
||
|
||
[Browsable(false)]
|
||
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
||
public int VisibleCount => view.VisibleCount;
|
||
|
||
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
|
||
[Localizable(true)]
|
||
[MergableProperty(false)]
|
||
public TreeNodeCollection Nodes => view.Nodes;
|
||
|
||
public event TreeViewCancelEventHandler BeforeCheck;
|
||
|
||
public event TreeViewEventHandler AfterCheck;
|
||
|
||
public event TreeViewCancelEventHandler BeforeCollapse;
|
||
|
||
public event TreeViewEventHandler AfterCollapse;
|
||
|
||
public event TreeViewCancelEventHandler BeforeExpand;
|
||
|
||
public event TreeViewEventHandler AfterExpand;
|
||
|
||
public event DrawTreeNodeEventHandler DrawNode;
|
||
|
||
public event ItemDragEventHandler ItemDrag;
|
||
|
||
public event TreeNodeMouseHoverEventHandler NodeMouseHover;
|
||
|
||
public event TreeViewCancelEventHandler BeforeSelect;
|
||
|
||
public event TreeViewEventHandler AfterSelect;
|
||
|
||
public event TreeNodeMouseClickEventHandler NodeMouseClick;
|
||
|
||
public event TreeNodeMouseClickEventHandler NodeMouseDoubleClick;
|
||
|
||
private void View_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
|
||
{
|
||
NodeMouseDoubleClick?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
|
||
{
|
||
NodeMouseClick?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_AfterSelect(object sender, TreeViewEventArgs e)
|
||
{
|
||
AfterSelect?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_BeforeSelect(object sender, TreeViewCancelEventArgs e)
|
||
{
|
||
BeforeSelect?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_NodeMouseHover(object sender, TreeNodeMouseHoverEventArgs e)
|
||
{
|
||
NodeMouseHover?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_ItemDrag(object sender, ItemDragEventArgs e)
|
||
{
|
||
ItemDrag?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_DrawNode(object sender, DrawTreeNodeEventArgs e)
|
||
{
|
||
DrawNode?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_AfterExpand(object sender, TreeViewEventArgs e)
|
||
{
|
||
AfterExpand?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_BeforeExpand(object sender, TreeViewCancelEventArgs e)
|
||
{
|
||
BeforeExpand?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_AfterCollapse(object sender, TreeViewEventArgs e)
|
||
{
|
||
AfterCollapse?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_BeforeCollapse(object sender, TreeViewCancelEventArgs e)
|
||
{
|
||
BeforeCollapse?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_AfterCheck(object sender, TreeViewEventArgs e)
|
||
{
|
||
AfterCheck?.Invoke(this, e);
|
||
}
|
||
|
||
private void View_BeforeCheck(object sender, TreeViewCancelEventArgs e)
|
||
{
|
||
BeforeCheck?.Invoke(this, e);
|
||
}
|
||
|
||
public void BeginUpdate()
|
||
{
|
||
view.BeginUpdate();
|
||
}
|
||
|
||
public void CollapseAll()
|
||
{
|
||
view.CollapseAll();
|
||
}
|
||
|
||
public void EndUpdate()
|
||
{
|
||
view.EndUpdate();
|
||
}
|
||
|
||
public void ExpandAll()
|
||
{
|
||
view.ExpandAll();
|
||
}
|
||
|
||
public TreeViewHitTestInfo HitTest(Point pt)
|
||
{
|
||
return view.HitTest(pt);
|
||
}
|
||
|
||
public TreeViewHitTestInfo HitTest(int x, int y)
|
||
{
|
||
return view.HitTest(x, y);
|
||
}
|
||
|
||
public int GetNodeCount(bool includeSubTrees)
|
||
{
|
||
return view.GetNodeCount(includeSubTrees);
|
||
}
|
||
|
||
public TreeNode GetNodeAt(Point pt)
|
||
{
|
||
return view.GetNodeAt(pt);
|
||
}
|
||
|
||
public TreeNode GetNodeAt(int x, int y)
|
||
{
|
||
return view.GetNodeAt(x, y);
|
||
}
|
||
|
||
public override string ToString()
|
||
{
|
||
return view.ToString();
|
||
}
|
||
|
||
public void Sort()
|
||
{
|
||
view.Sort();
|
||
}
|
||
|
||
private void SetPos()
|
||
{
|
||
if (view == null) return;
|
||
view.Left = 2;
|
||
view.Top = 2;
|
||
view.Width = Width - 4;
|
||
view.Height = Height - 4;
|
||
|
||
int barWidth = Math.Max(ScrollBarInfo.VerticalScrollBarWidth(), ScrollBarWidth);
|
||
|
||
if (Bar != null)
|
||
{
|
||
Bar.Top = 2;
|
||
Bar.Left = Width - barWidth - 2;
|
||
Bar.Width = barWidth;
|
||
Bar.Height = Height - 4;
|
||
}
|
||
|
||
if (HBar != null)
|
||
{
|
||
HBar.Left = 2;
|
||
HBar.Top = Height - ScrollBarInfo.HorizontalScrollBarHeight() - 2;
|
||
HBar.Width = Width - (ScrollBarVisible ? ScrollBarInfo.VerticalScrollBarWidth() : 0) - 2 - 2;
|
||
HBar.Height = ScrollBarInfo.HorizontalScrollBarHeight();
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载字体变更
|
||
/// </summary>
|
||
/// <param name="e">参数</param>
|
||
protected override void OnFontChanged(EventArgs e)
|
||
{
|
||
base.OnFontChanged(e);
|
||
if (DefaultFontSize < 0 && view != null) view.Font = this.Font;
|
||
}
|
||
|
||
protected override void OnMouseWheel(MouseEventArgs e)
|
||
{
|
||
if (!ScrollBarVisible || !HScrollBarVisible) return;
|
||
base.OnMouseWheel(e);
|
||
|
||
if (e.Delta > 10)
|
||
ScrollBarInfo.ScrollUp(view.Handle);
|
||
else if (e.Delta < -10)
|
||
ScrollBarInfo.ScrollDown(view.Handle);
|
||
|
||
SetScrollInfo();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载控件尺寸变更
|
||
/// </summary>
|
||
/// <param name="e">参数</param>
|
||
protected override void OnSizeChanged(EventArgs e)
|
||
{
|
||
base.OnSizeChanged(e);
|
||
SetScrollInfo();
|
||
SetPos();
|
||
}
|
||
|
||
public void SetScrollInfo()
|
||
{
|
||
if (view == null || Bar == null || HBar == null) return;
|
||
|
||
if (Nodes.Count == 0)
|
||
{
|
||
Bar.Visible = false;
|
||
return;
|
||
}
|
||
|
||
var si = ScrollBarInfo.GetInfo(view.Handle);
|
||
var si1 = ScrollBarInfo.GetHorInfo(view.Handle);
|
||
|
||
SetPos();
|
||
|
||
Bar.Maximum = si.ScrollMax;
|
||
Bar.Visible = si.ScrollMax > 0 && si.nMax > 0 && si.nPage > 0;
|
||
Bar.Value = si.nPos;
|
||
Bar.BringToFront();
|
||
|
||
if (ScrollBarVisible != Bar.Visible)
|
||
{
|
||
ScrollBarVisible = Bar.Visible;
|
||
Invalidate();
|
||
}
|
||
|
||
HBar.Maximum = si1.ScrollMax;
|
||
HBar.Visible = si1.ScrollMax > 0 && si1.nMax > 0 && si1.nPage > 0;
|
||
HBar.Value = si1.nPos;
|
||
HBar.BringToFront();
|
||
|
||
if (HScrollBarVisible != HBar.Visible)
|
||
{
|
||
HScrollBarVisible = HBar.Visible;
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
private void InitializeComponent()
|
||
{
|
||
view = new TreeViewEx();
|
||
Bar = new UIScrollBar();
|
||
HBar = new UIHorScrollBar();
|
||
SuspendLayout();
|
||
//
|
||
// view
|
||
//
|
||
view.BackColor = Color.White;
|
||
view.BorderStyle = BorderStyle.None;
|
||
view.DrawMode = TreeViewDrawMode.OwnerDrawAll;
|
||
view.ForeColor = Color.FromArgb(48, 48, 48);
|
||
view.FullRowSelect = true;
|
||
view.ItemHeight = 28;
|
||
view.Location = new Point(2, 2);
|
||
view.Name = "view";
|
||
view.ShowLines = false;
|
||
view.Size = new Size(266, 176);
|
||
view.TabIndex = 0;
|
||
view.AfterCollapse += view_AfterCollapse;
|
||
view.AfterExpand += view_AfterExpand;
|
||
view.DrawNode += view_DrawNode;
|
||
//
|
||
// Bar
|
||
//
|
||
Bar.Font = new Font("宋体", 12F);
|
||
Bar.Location = new Point(247, 3);
|
||
Bar.Name = "Bar";
|
||
Bar.Size = new Size(19, 173);
|
||
Bar.Style = UIStyle.Custom;
|
||
Bar.StyleCustomMode = true;
|
||
Bar.TabIndex = 2;
|
||
Bar.Visible = false;
|
||
Bar.ValueChanged += Bar_ValueChanged;
|
||
//
|
||
// HBar
|
||
//
|
||
HBar.Font = new Font("宋体", 12F);
|
||
HBar.Location = new Point(247, 3);
|
||
HBar.Name = "HBar";
|
||
HBar.Size = new Size(173, 19);
|
||
HBar.Style = UIStyle.Custom;
|
||
HBar.StyleCustomMode = true;
|
||
HBar.TabIndex = 3;
|
||
HBar.Visible = false;
|
||
HBar.ValueChanged += HBar_ValueChanged;
|
||
//
|
||
// UITreeViewEx
|
||
//
|
||
Controls.Add(Bar);
|
||
Controls.Add(HBar);
|
||
Controls.Add(view);
|
||
FillColor = Color.White;
|
||
ResumeLayout(false);
|
||
}
|
||
|
||
private void Bar_ValueChanged(object sender, EventArgs e)
|
||
{
|
||
ScrollBarInfo.SetScrollValue(view.Handle, Bar.Value);
|
||
}
|
||
|
||
private void HBar_ValueChanged(object sender, EventArgs e)
|
||
{
|
||
ScrollBarInfo.SetHorScrollValue(view.Handle, HBar.Value);
|
||
}
|
||
|
||
private void view_AfterExpand(object sender, TreeViewEventArgs e)
|
||
{
|
||
SetScrollInfo();
|
||
}
|
||
|
||
private void view_AfterCollapse(object sender, TreeViewEventArgs e)
|
||
{
|
||
SetScrollInfo();
|
||
}
|
||
|
||
private void view_DrawNode(object sender, DrawTreeNodeEventArgs e)
|
||
{
|
||
SetScrollInfo();
|
||
}
|
||
|
||
internal sealed class NoneExcludedImageIndexConverter : ImageIndexConverter
|
||
{
|
||
protected override bool IncludeNoneAsStandardValue => false;
|
||
}
|
||
|
||
internal class TreeViewEx : TreeView
|
||
{
|
||
public ConcurrentDictionary<TreeNode, UITreeNodePainter> Painter = new ConcurrentDictionary<TreeNode, UITreeNodePainter>();
|
||
|
||
public UIHorScrollBar HBar;
|
||
public UIScrollBar Bar;
|
||
|
||
private TreeNode CurrentNode;
|
||
|
||
private bool showLines;
|
||
|
||
public TreeViewEx()
|
||
{
|
||
base.SetStyle(
|
||
ControlStyles.DoubleBuffer |
|
||
ControlStyles.OptimizedDoubleBuffer |
|
||
ControlStyles.AllPaintingInWmPaint |
|
||
ControlStyles.ResizeRedraw |
|
||
ControlStyles.SupportsTransparentBackColor, true);
|
||
base.UpdateStyles();
|
||
DoubleBuffered = true;
|
||
DrawMode = TreeViewDrawMode.OwnerDrawAll;
|
||
}
|
||
|
||
protected override void OnHandleCreated(EventArgs e)
|
||
{
|
||
base.OnHandleCreated(e);
|
||
int Style = 0;
|
||
if (DoubleBuffered) Style |= 0x0004;
|
||
if (Style != 0) Win32.User.SendMessage(Handle, 0x112C, new IntPtr(0x0004), new IntPtr(Style));
|
||
}
|
||
|
||
private float DefaultFontSize = -1;
|
||
|
||
public void SetDPIScale()
|
||
{
|
||
if (DesignMode) return;
|
||
if (!UIDPIScale.NeedSetDPIFont()) return;
|
||
if (DefaultFontSize < 0) DefaultFontSize = this.Font.Size;
|
||
this.Font = UIDPIScale.DPIScaleFont(this.Font, DefaultFontSize);
|
||
}
|
||
|
||
[DefaultValue(typeof(Color), "155, 200, 255")]
|
||
public Color HoverColor { get; set; } = Color.FromArgb(155, 200, 255);
|
||
|
||
public Color SelectedColor { get; set; } = Color.FromArgb(80, 160, 255);
|
||
|
||
public Color SelectedForeColor { get; set; } = Color.White;
|
||
|
||
public Color FillColor { get; set; } = Color.White;
|
||
|
||
public bool ShowLinesEx
|
||
{
|
||
get => showLines;
|
||
set
|
||
{
|
||
showLines = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标移动事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseMove(MouseEventArgs e)
|
||
{
|
||
base.OnMouseMove(e);
|
||
var node = GetNodeAt(e.Location);
|
||
if (node == null || CurrentNode == node) return;
|
||
|
||
using var g = CreateGraphics();
|
||
if (CurrentNode != null && CurrentNode != SelectedNode)
|
||
{
|
||
ClearCurrentNode(g);
|
||
}
|
||
|
||
if (node != SelectedNode)
|
||
{
|
||
CurrentNode = node;
|
||
OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Hot));
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标离开事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseLeave(EventArgs e)
|
||
{
|
||
using var g = CreateGraphics();
|
||
ClearCurrentNode(g);
|
||
}
|
||
|
||
private void ClearCurrentNode(Graphics g)
|
||
{
|
||
if (CurrentNode != null && CurrentNode != SelectedNode)
|
||
{
|
||
OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Default));
|
||
OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Default));
|
||
CurrentNode = null;
|
||
}
|
||
}
|
||
|
||
public int DrawLeft(TreeNode node)
|
||
{
|
||
int drawLeft;
|
||
if (!HBar.Visible)
|
||
drawLeft = (node.Level + 1) * Indent + 3;
|
||
else
|
||
drawLeft = -(int)(Width * HBar.Value * 1.0 / HBar.Maximum) + (node.Level + 1) * Indent + 3;
|
||
|
||
return drawLeft;
|
||
}
|
||
|
||
protected override void OnDrawNode(DrawTreeNodeEventArgs e)
|
||
{
|
||
base.OnDrawNode(e);
|
||
|
||
if (e.Node == null || Nodes.Count == 0) return;
|
||
|
||
try
|
||
{
|
||
if (!DicNodeStatus.ContainsKey(e.Node.GetHashCode()))
|
||
{
|
||
DicNodeStatus.Add(e.Node.GetHashCode(), false);
|
||
}
|
||
|
||
if (CheckBoxes)
|
||
{
|
||
if (TreeNodeStateSync && e.Node.Parent != null && DicNodeStatus.ContainsKey(e.Node.Parent.GetHashCode()) && !DicNodeStatus[e.Node.Parent.GetHashCode()])
|
||
{
|
||
SetParentNodeCheckedState(e.Node);
|
||
}
|
||
}
|
||
|
||
if (BorderStyle == BorderStyle.Fixed3D)
|
||
{
|
||
BorderStyle = BorderStyle.FixedSingle;
|
||
}
|
||
|
||
if (e.Node == null || e.Node.Bounds.Width <= 0 && e.Node.Bounds.Height <= 0 && e.Node.Bounds.X <= 0 && e.Node.Bounds.Y <= 0)
|
||
{
|
||
e.DrawDefault = true;
|
||
}
|
||
else
|
||
{
|
||
int drawLeft;
|
||
if (!HBar.Visible)
|
||
drawLeft = e.Bounds.X + (e.Node.Level + 1) * Indent + 3;
|
||
else
|
||
drawLeft = -(int)(Width * HBar.Value * 1.0 / HBar.Maximum) + (e.Node.Level + 1) * Indent + 3;
|
||
|
||
var checkBoxLeft = drawLeft - 2;
|
||
var imageLeft = drawLeft;
|
||
var haveImage = false;
|
||
var sf = TextRenderer.MeasureText(e.Node.Text, Font);
|
||
|
||
if (CheckBoxes)
|
||
{
|
||
drawLeft += 16;
|
||
imageLeft += 16;
|
||
}
|
||
|
||
if (ImageList != null && ImageList.Images.Count > 0 && ImageList.Images.ContainsIndex(e.Node.ImageIndex))
|
||
{
|
||
haveImage = true;
|
||
drawLeft += ImageList.ImageSize.Width + 6;
|
||
}
|
||
|
||
if (!haveImage && ImageList != null && ImageList.Images.Count > 0 && ImageList.Images.ContainsKey(e.Node.ImageKey))
|
||
{
|
||
haveImage = true;
|
||
drawLeft += ImageList.ImageSize.Width + 6;
|
||
}
|
||
|
||
var checkboxColor = ForeColor;
|
||
if (e.Node != null)
|
||
{
|
||
if (e.Node == SelectedNode)
|
||
{
|
||
Color sc = SelectedColor;
|
||
Color scf = SelectedForeColor;
|
||
if (Painter.ContainsKey(e.Node) && Painter[e.Node].HaveHoveColor)
|
||
{
|
||
sc = Painter[e.Node].SelectedColor;
|
||
scf = Painter[e.Node].SelectedForeColor;
|
||
}
|
||
|
||
e.Graphics.FillRectangle(sc, new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
|
||
e.Graphics.DrawString(e.Node.Text, Font, scf, new Rectangle(drawLeft, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height), ContentAlignment.MiddleLeft);
|
||
checkboxColor = SelectedForeColor;
|
||
}
|
||
else if (e.Node == CurrentNode && (e.State & TreeNodeStates.Hot) != 0)
|
||
{
|
||
Color hc = HoverColor;
|
||
if (Painter.ContainsKey(e.Node) && Painter[e.Node].HaveHoveColor)
|
||
{
|
||
hc = Painter[e.Node].HoverColor;
|
||
}
|
||
|
||
e.Graphics.FillRectangle(hc, new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
|
||
e.Graphics.DrawString(e.Node.Text, Font, ForeColor, new Rectangle(drawLeft, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height), ContentAlignment.MiddleLeft);
|
||
}
|
||
else
|
||
{
|
||
Color fc = FillColor;
|
||
Color fcf = ForeColor;
|
||
if (Painter.ContainsKey(e.Node))
|
||
{
|
||
fc = Painter[e.Node].BackColor;
|
||
fcf = Painter[e.Node].ForeColor;
|
||
}
|
||
|
||
e.Graphics.FillRectangle(fc, new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
|
||
e.Graphics.DrawString(e.Node.Text, Font, fcf, new Rectangle(drawLeft, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height), ContentAlignment.MiddleLeft);
|
||
}
|
||
|
||
if (haveImage)
|
||
{
|
||
Image image = null;
|
||
if (ImageList.Images.ContainsIndex(e.Node.ImageIndex))
|
||
image = ImageList.Images[e.Node.ImageIndex];
|
||
if (image == null && ImageList.Images.ContainsKey(e.Node.ImageKey))
|
||
image = ImageList.Images[e.Node.ImageKey];
|
||
|
||
if (e.Node == SelectedNode)
|
||
{
|
||
if (ImageList.Images.ContainsIndex(e.Node.SelectedImageIndex))
|
||
image = ImageList.Images[e.Node.SelectedImageIndex];
|
||
if (image == null && ImageList.Images.ContainsKey(e.Node.SelectedImageKey))
|
||
image = ImageList.Images[e.Node.SelectedImageKey];
|
||
}
|
||
|
||
if (image != null)
|
||
e.Graphics.DrawImage(image, imageLeft, e.Bounds.Y + (e.Bounds.Height - ImageList.ImageSize.Height) / 2);
|
||
}
|
||
|
||
if (CheckBoxes)
|
||
{
|
||
if (!e.Node.Checked)
|
||
{
|
||
e.Graphics.DrawRectangle(checkboxColor,
|
||
new Rectangle(checkBoxLeft + 2, e.Bounds.Y + (ItemHeight - 12) / 2 - 1, 12, 12));
|
||
}
|
||
else
|
||
{
|
||
using var pn = new Pen(checkboxColor, 2);
|
||
var pt1 = new Point(checkBoxLeft + 2 + 2, e.Bounds.Y + (ItemHeight - 12) / 2 - 1 + 5);
|
||
var pt2 = new Point(pt1.X + 3, pt1.Y + 3);
|
||
var pt3 = new Point(pt2.X + 5, pt2.Y - 5);
|
||
|
||
PointF[] CheckMarkLine = { pt1, pt2, pt3 };
|
||
|
||
e.Graphics.SetHighQuality();
|
||
e.Graphics.DrawLines(pn, CheckMarkLine);
|
||
e.Graphics.SetDefaultQuality();
|
||
e.Graphics.DrawRectangle(checkboxColor, new Rectangle(checkBoxLeft + 2, e.Bounds.Y + (ItemHeight - 12) / 2 - 1, 12, 12));
|
||
}
|
||
|
||
if (DicNodeStatus[e.Node.GetHashCode()])
|
||
{
|
||
//var location = e.Node.Bounds.Location;
|
||
//location.Offset(-29, 10);
|
||
var location = new Point(checkBoxLeft + 5, e.Bounds.Y + (ItemHeight - 12) / 2 + 2);
|
||
var size = new Size(7, 7);
|
||
e.Graphics.FillRectangle(checkboxColor, new Rectangle(location, size)); //这里绘制的是正方形
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
var lineY = e.Bounds.Y + e.Node.Bounds.Height / 2 - 1;
|
||
int lineX;
|
||
if (!HBar.Visible)
|
||
lineX = 3 + e.Node.Level * Indent + 9;
|
||
else
|
||
lineX = -(int)(Width * HBar.Value * 1.0 / HBar.Maximum) + 3 + e.Node.Level * Indent + 9;
|
||
|
||
if (ShowLinesEx)
|
||
{
|
||
try
|
||
{
|
||
//绘制虚线
|
||
using var pn = new Pen(LineColor);
|
||
pn.DashStyle = DashStyle.Dot;
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX + 10, lineY);
|
||
|
||
if (e.Node.Level >= 1)
|
||
{
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Bounds.Top);
|
||
if (e.Node.NextNode != null)
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
|
||
|
||
var pNode = e.Node.Parent;
|
||
while (pNode != null)
|
||
{
|
||
lineX -= Indent;
|
||
|
||
if (Nodes.Count > 0)
|
||
{
|
||
if (pNode.NextNode != null)
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Top);
|
||
|
||
if (pNode.NextNode != null)
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
|
||
}
|
||
|
||
pNode = pNode.Parent;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (e.Node != null && Nodes.Count > 0)
|
||
{
|
||
if (e.Node.PrevNode != null)
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Top);
|
||
|
||
if (e.Node.NextNode != null)
|
||
e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
|
||
}
|
||
}
|
||
}
|
||
catch (Exception exception)
|
||
{
|
||
Console.WriteLine(exception);
|
||
}
|
||
}
|
||
|
||
if (!HBar.Visible)
|
||
lineX = 3 + e.Node.Level * Indent + 9;
|
||
else
|
||
lineX = -(int)(Width * HBar.Value * 1.0 / HBar.Maximum) + 3 + e.Node.Level * Indent + 9;
|
||
|
||
//绘制左侧+号
|
||
if (ShowPlusMinus && e.Node.Nodes.Count > 0)
|
||
{
|
||
if (ShowLines)
|
||
{
|
||
e.Graphics.FillRectangle(Color.White, new Rectangle(lineX - 4, lineY - 4, 8, 8));
|
||
e.Graphics.DrawRectangle(UIFontColor.Primary, new Rectangle(lineX - 4, lineY - 4, 8, 8));
|
||
e.Graphics.DrawLine(UIFontColor.Primary, lineX - 2, lineY, lineX + 2, lineY);
|
||
if (!e.Node.IsExpanded)
|
||
e.Graphics.DrawLine(UIFontColor.Primary, lineX, lineY - 2, lineX, lineY + 2);
|
||
}
|
||
else
|
||
{
|
||
Color fcf = ForeColor;
|
||
if (e.Node == SelectedNode) fcf = SelectedForeColor;
|
||
if (Painter.ContainsKey(e.Node)) fcf = Painter[e.Node].ForeColor;
|
||
|
||
if (e.Node.IsExpanded)
|
||
{
|
||
e.Graphics.DrawFontImage(61703, 24, fcf,
|
||
new RectangleF(lineX - 12, lineY - 12, 24, 24), 1, 1);
|
||
}
|
||
else
|
||
{
|
||
e.Graphics.DrawFontImage(61701, 24, fcf,
|
||
new RectangleF(lineX - 12, lineY - 12, 24, 24), 0, 1);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
Console.WriteLine(ex.Message);
|
||
}
|
||
}
|
||
|
||
public bool TreeNodeSelected(DrawTreeNodeEventArgs e)
|
||
{
|
||
return e.State == TreeNodeStates.Selected || e.State == TreeNodeStates.Focused ||
|
||
e.State == (TreeNodeStates.Focused | TreeNodeStates.Selected);
|
||
}
|
||
|
||
protected override void WndProc(ref Message m)
|
||
{
|
||
if (IsDisposed || Disposing) return;
|
||
if (m.Msg == Win32.User.WM_ERASEBKGND)
|
||
{
|
||
m.Result = IntPtr.Zero;
|
||
return;
|
||
}
|
||
|
||
if (Bar != null && !Bar.Visible)
|
||
{
|
||
if (m.Msg == 522)
|
||
{
|
||
m.Result = IntPtr.Zero;
|
||
return;
|
||
}
|
||
}
|
||
|
||
base.WndProc(ref m);
|
||
}
|
||
|
||
private Dictionary<int, bool> DicNodeStatus = new Dictionary<int, bool>();
|
||
|
||
protected override void OnAfterCheck(TreeViewEventArgs e)
|
||
{
|
||
base.OnAfterCheck(e);
|
||
if (e.Action == TreeViewAction.ByMouse && TreeNodeStateSync) //鼠标点击
|
||
{
|
||
DicNodeStatus[e.Node.GetHashCode()] = false;
|
||
|
||
SetChildNodeCheckedState(e.Node, e.Node.Checked);
|
||
SetParentNodeCheckedState(e.Node, true);
|
||
}
|
||
}
|
||
|
||
public bool TreeNodeStateSync { get; set; } = true;
|
||
|
||
private void SetParentNodeCheckedState(TreeNode currNode, bool ByMouse = false)
|
||
{
|
||
if (currNode.Parent == null)
|
||
{
|
||
return;
|
||
}
|
||
|
||
TreeNode parentNode = currNode.Parent; //获得当前节点的父节点
|
||
var count = parentNode.Nodes.Cast<TreeNode>().Where(n => n.Checked).ToList().Count;
|
||
|
||
//判断节点Checked是否改变，只有改变时才赋值，否则不变更，以防止频繁触发OnAfterCheck事件
|
||
bool bChecked = count == parentNode.Nodes.Count;
|
||
if (parentNode.Checked != bChecked)
|
||
{
|
||
parentNode.Checked = bChecked;
|
||
}
|
||
|
||
var half = parentNode.Nodes.Cast<TreeNode>().Where(n => (DicNodeStatus.ContainsKey(n.GetHashCode()) ? DicNodeStatus[n.GetHashCode()] : false)).ToList().Count;
|
||
|
||
if ((count > 0 && count < parentNode.Nodes.Count) || half > 0)
|
||
{
|
||
DicNodeStatus[parentNode.GetHashCode()] = true;
|
||
}
|
||
else
|
||
{
|
||
DicNodeStatus[parentNode.GetHashCode()] = false;
|
||
}
|
||
|
||
if (ByMouse)
|
||
{
|
||
using var g = CreateGraphics();
|
||
OnDrawNode(new DrawTreeNodeEventArgs(g, parentNode, new Rectangle(0, parentNode.Bounds.Y, Width, parentNode.Bounds.Height), TreeNodeStates.Hot));
|
||
|
||
if (parentNode.Parent != null) //如果父节点之上还有父节点
|
||
{
|
||
SetParentNodeCheckedState(parentNode, true); //递归调用
|
||
}
|
||
}
|
||
}
|
||
|
||
//选中节点之后，选中节点的所有子节点
|
||
private void SetChildNodeCheckedState(TreeNode currNode, bool state)
|
||
{
|
||
TreeNodeCollection nodes = currNode.Nodes; //获取所有子节点
|
||
if (nodes.Count > 0) //存在子节点
|
||
{
|
||
foreach (TreeNode tn in nodes)
|
||
{
|
||
DicNodeStatus[tn.GetHashCode()] = false;
|
||
tn.Checked = state;
|
||
SetChildNodeCheckedState(tn, state);//递归调用子节点的子节点
|
||
}
|
||
}
|
||
}
|
||
|
||
public bool NodeClickChangeCheckBoxes { get; set; }
|
||
|
||
protected override void OnNodeMouseClick(TreeNodeMouseClickEventArgs e)
|
||
{
|
||
base.OnNodeMouseClick(e);
|
||
if (CheckBoxes && NodeClickChangeCheckBoxes)
|
||
{
|
||
int drawLeft = e.Node.Bounds.X;
|
||
if (ImageList != null)
|
||
drawLeft -= ImageList.ImageSize.Width;
|
||
|
||
if (e.Location.X > drawLeft)
|
||
{
|
||
e.Node.Checked = !e.Node.Checked;
|
||
DicNodeStatus[e.Node.GetHashCode()] = false;
|
||
SetChildNodeCheckedState(e.Node, e.Node.Checked);
|
||
SetParentNodeCheckedState(e.Node, true);
|
||
}
|
||
}
|
||
}
|
||
|
||
public void CheckedAll()
|
||
{
|
||
foreach (TreeNode node in Nodes)
|
||
{
|
||
node.Checked = true;
|
||
SetChildNodeCheckedState(node, true);
|
||
}
|
||
}
|
||
|
||
public void UnCheckedAll()
|
||
{
|
||
foreach (TreeNode node in Nodes)
|
||
{
|
||
node.Checked = false;
|
||
SetChildNodeCheckedState(node, false);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
} |