579 lines
19 KiB
C#
579 lines
19 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) 2012-2020 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: V2.2
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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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******************************************************************************/
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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public sealed class UITreeView : TreeView, IStyleInterface
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{
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private readonly UIScrollBar Bar = new UIScrollBar();
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public UITreeView()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.SupportsTransparentBackColor | ControlStyles.ResizeRedraw | ControlStyles.OptimizedDoubleBuffer, true);
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DrawMode = TreeViewDrawMode.OwnerDrawAll;
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DoubleBuffered = true;
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Font = UIFontColor.Font;
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ItemHeight = 28;
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BackColor = Color.White;
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Bar.ValueChanged += Bar_ValueChanged;
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Bar.Dock = DockStyle.Right;
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Bar.Visible = false;
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Bar.Style = UIStyle.Custom;
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Bar.StyleCustomMode = true;
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Bar.FillColor = fillColor;
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Bar.ForeColor = Color.Silver;
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Bar.HoverColor = Color.Silver;
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Bar.PressColor = Color.Silver;
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Controls.Add(Bar);
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Version = UIGlobal.Version;
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SetScrollInfo();
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}
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[DefaultValue(null)]
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public string TagString { get; set; }
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private Color fillColor = Color.White;
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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("背景颜色"), Category("自定义")]
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[DefaultValue(typeof(Color), "White")]
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public Color FillColor
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{
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get => fillColor;
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set
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{
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if (fillColor != value)
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{
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fillColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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}
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private Color foreColor = UIFontColor.Primary;
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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("背景颜色"), Category("自定义")]
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[DefaultValue(typeof(Color), "48, 48, 48")]
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public override Color ForeColor
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{
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get => foreColor;
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set
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{
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if (foreColor != value)
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{
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foreColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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}
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protected override void OnSizeChanged(EventArgs e)
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{
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base.OnSizeChanged(e);
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SetScrollInfo();
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}
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private void Bar_ValueChanged(object sender, EventArgs e)
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{
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ScrollBarInfo.SetScrollValue(Handle, Bar.Value);
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}
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[DefaultValue(false)]
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public bool StyleCustomMode { get; set; }
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private Color selectedColor = Color.FromArgb(80, 160, 255);
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private bool showTips;
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[Description("是否显示角标"), Category("自定义")]
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[DefaultValue(false)]
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public bool ShowTips
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{
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get => showTips;
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set
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{
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if (showTips != value)
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{
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showTips = value;
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Invalidate();
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}
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}
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}
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private Font tipsFont = new Font("Microsoft Sans Serif", 9);
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[Description("角标文字字体"), Category("自定义")]
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[DefaultValue(typeof(Font), "Microsoft Sans Serif, 9pt")]
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public Font TipsFont
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{
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get => tipsFont;
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set
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{
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if (!tipsFont.Equals(value))
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{
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tipsFont = value;
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Invalidate();
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}
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}
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}
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color SelectedColor
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{
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get => selectedColor;
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set
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{
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if (selectedColor != value)
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{
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selectedColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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}
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private Color selectedHighColor = UIColor.White;
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("选中Tab页高亮"), Category("自定义")]
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[DefaultValue(typeof(Color), "White")]
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public Color SelectedHighColor
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{
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get => selectedHighColor;
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set
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{
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selectedHighColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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private Color hoverColor = Color.FromArgb(155, 200, 255);
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[DefaultValue(typeof(Color), "155, 200, 255")]
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public Color HoverColor
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{
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get => hoverColor;
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set
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{
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hoverColor = value;
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_style = UIStyle.Custom;
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}
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}
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private UIStyle _style = UIStyle.Blue;
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[DefaultValue(UIStyle.Blue)]
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public UIStyle Style
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{
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get => _style;
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set => SetStyle(value);
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}
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private Color rectColor = UIStyles.Blue.RectColor;
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("边框颜色"), Category("自定义")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color RectColor
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{
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get => rectColor;
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set => SetRectColor(value);
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}
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/// <summary>
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/// 设置边框颜色
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/// </summary>
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/// <param name="value">颜色</param>
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private void SetRectColor(Color value)
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{
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if (rectColor != value)
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{
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rectColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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public void SetStyle(UIStyle style)
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{
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SetStyleColor(UIStyles.GetStyleColor(style));
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_style = style;
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}
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public void SetStyleColor(UIBaseStyle uiColor)
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{
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if (uiColor.IsCustom()) return;
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selectedForeColor = selectedHighColor = UIColor.White;
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rectColor = uiColor.RectColor;
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fillColor = UIColor.White;
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selectedColor = uiColor.TreeViewSelectedColor;
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foreColor = UIFontColor.Primary;
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hoverColor = uiColor.TreeViewHoverColor;
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if (Bar != null)
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{
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Bar.FillColor = UIColor.White;
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Bar.ForeColor = uiColor.PrimaryColor;
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Bar.HoverColor = uiColor.ButtonFillHoverColor;
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Bar.PressColor = uiColor.ButtonFillPressColor;
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}
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Invalidate();
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Invalidate();
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}
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private Color selectedForeColor = UIColor.White;
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[DefaultValue(typeof(Color), "White")]
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public Color SelectedForeColor
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{
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get => selectedForeColor;
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set
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{
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if (selectedForeColor != value)
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{
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selectedForeColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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}
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private bool ScrollBarVisible;
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private TreeNode CurrentNode;
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protected override void OnMouseMove(MouseEventArgs e)
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{
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base.OnMouseMove(e);
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TreeNode node = GetNodeAt(e.Location);
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if (node == null || CurrentNode == node)
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{
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return;
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}
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Graphics g = CreateGraphics();
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if (CurrentNode != null)
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{
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OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Default));
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}
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CurrentNode = node;
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OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Hot));
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g.Dispose();
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}
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protected override void OnMouseLeave(EventArgs e)
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{
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Graphics g = CreateGraphics();
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if (CurrentNode != null)
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{
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OnDrawNode(new DrawTreeNodeEventArgs(g, CurrentNode, new Rectangle(0, CurrentNode.Bounds.Y, Width, CurrentNode.Bounds.Height), TreeNodeStates.Default));
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CurrentNode = null;
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}
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g.Dispose();
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}
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private bool checkBoxes;
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[Browsable(false)]
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public new bool CheckBoxes
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{
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get => checkBoxes;
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set => checkBoxes = false;
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}
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private readonly NavMenuHelper MenuHelper = new NavMenuHelper();
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protected override void OnDrawNode(DrawTreeNodeEventArgs e)
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{
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if (BorderStyle == BorderStyle.Fixed3D)
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{
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BorderStyle = BorderStyle.FixedSingle;
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}
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SetScrollInfo();
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CheckBoxes = false;
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if (e.Node == null || (e.Node.Bounds.Width <= 0 && e.Node.Bounds.Height <= 0 && e.Node.Bounds.X <= 0 && e.Node.Bounds.Y <= 0))
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{
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e.DrawDefault = true;
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}
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else
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{
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int drawLeft = (e.Node.Level + 1) * 19 + 3;
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int imageLeft = drawLeft;
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bool haveImage = false;
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if (MenuHelper.GetSymbol(e.Node) > 0)
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{
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haveImage = true;
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drawLeft += MenuHelper.GetSymbolSize(e.Node) + 6;
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}
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else
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{
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if (ImageList != null && ImageList.Images.Count > 0 && e.Node.ImageIndex >= 0 && e.Node.ImageIndex < ImageList.Images.Count)
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{
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haveImage = true;
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drawLeft += ImageList.ImageSize.Width + 6;
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}
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}
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SizeF sf = e.Graphics.MeasureString(e.Node.Text, Font);
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if (e.Node == SelectedNode)
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{
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e.Graphics.FillRectangle((e.State & TreeNodeStates.Hot) != 0 ? HoverColor : SelectedColor,
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new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
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e.Graphics.DrawString(e.Node.Text, Font, SelectedForeColor, drawLeft, e.Bounds.Y + (ItemHeight - sf.Height) / 2.0f);
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}
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else if (e.Node == CurrentNode && (e.State & TreeNodeStates.Hot) != 0)
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{
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e.Graphics.FillRectangle(HoverColor, new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
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e.Graphics.DrawString(e.Node.Text, Font, ForeColor, drawLeft, e.Bounds.Y + (ItemHeight - sf.Height) / 2.0f);
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}
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else
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{
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e.Graphics.FillRectangle(fillColor, new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(Width, e.Node.Bounds.Height)));
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e.Graphics.DrawString(e.Node.Text, Font, ForeColor, drawLeft, e.Bounds.Y + (ItemHeight - sf.Height) / 2.0f);
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}
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if (haveImage)
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{
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if (MenuHelper.GetSymbol(e.Node) > 0)
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{
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SizeF fiSize = e.Graphics.GetFontImageSize(MenuHelper.GetSymbol(e.Node), MenuHelper.GetSymbolSize(e.Node));
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e.Graphics.DrawFontImage(MenuHelper.GetSymbol(e.Node), MenuHelper.GetSymbolSize(e.Node), Color.White,
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imageLeft + (MenuHelper.GetSymbolSize(e.Node) - fiSize.Width) / 2.0f, e.Bounds.Y + (e.Bounds.Height - fiSize.Height) / 2);
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}
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else
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{
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if (TreeNodeSelected(e) && e.Node.SelectedImageIndex >= 0 && e.Node.SelectedImageIndex < ImageList.Images.Count)
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e.Graphics.DrawImage(ImageList.Images[e.Node.SelectedImageIndex], imageLeft, e.Bounds.Y + (e.Bounds.Height - ImageList.ImageSize.Height) / 2);
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else
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e.Graphics.DrawImage(ImageList.Images[e.Node.ImageIndex], imageLeft, e.Bounds.Y + (e.Bounds.Height - ImageList.ImageSize.Height) / 2);
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}
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}
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int lineY = e.Bounds.Y + e.Node.Bounds.Height / 2 - 1;
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int lineX = 3 + e.Node.Level * 19 + 9;
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try
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{
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//绘制虚线
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Pen pn = new Pen(UIFontColor.Primary);
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pn.DashStyle = DashStyle.Dot;
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e.Graphics.DrawLine(pn, lineX, lineY, lineX + 10, lineY);
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if (e.Node.Level >= 1)
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Bounds.Top);
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if (e.Node.NextNode != null)
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
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}
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TreeNode pNode = e.Node.Parent;
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while (pNode != null)
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{
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lineX -= 19;
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if (pNode.Level == 0 && pNode.NextNode != null)
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Top);
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}
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if (pNode.NextNode != null)
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
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}
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pNode = pNode.Parent;
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}
|
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}
|
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else
|
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{
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if (e.Node.PrevNode != null)
|
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Top);
|
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}
|
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|
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if (e.Node.NextNode != null)
|
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{
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e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Bottom);
|
||
}
|
||
}
|
||
|
||
pn.Dispose();
|
||
}
|
||
catch (Exception exception)
|
||
{
|
||
Console.WriteLine(exception);
|
||
}
|
||
|
||
lineX = 3 + e.Node.Level * 19 + 9;
|
||
//绘制左侧+号
|
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if (e.Node.Nodes.Count > 0)
|
||
{
|
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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);
|
||
}
|
||
}
|
||
|
||
if (ShowTips && MenuHelper.GetTipsText(e.Node).IsValid())
|
||
{
|
||
SizeF tipsSize = e.Graphics.MeasureString(MenuHelper.GetTipsText(e.Node), TipsFont);
|
||
float sfMax = Math.Max(tipsSize.Width, tipsSize.Height) + 1;
|
||
float tipsLeft = Width - (ScrollBarVisible ? 50 : 30) - 6 - sfMax;
|
||
float tipsTop = e.Bounds.Y + (ItemHeight - sfMax) / 2;
|
||
|
||
e.Graphics.FillEllipse(Color.Red, tipsLeft, tipsTop, sfMax, sfMax);
|
||
e.Graphics.DrawString(MenuHelper.GetTipsText(e.Node), TipsFont, Color.White, tipsLeft + sfMax / 2.0f - tipsSize.Width / 2.0f, tipsTop + sfMax / 2.0f - tipsSize.Height / 2.0f);
|
||
}
|
||
}
|
||
}
|
||
|
||
private bool TreeNodeSelected(DrawTreeNodeEventArgs e)
|
||
{
|
||
return e.State == TreeNodeStates.Selected || e.State == TreeNodeStates.Focused ||
|
||
e.State == (TreeNodeStates.Focused | TreeNodeStates.Selected);
|
||
}
|
||
|
||
public string Version { get; }
|
||
|
||
protected override void OnNodeMouseClick(TreeNodeMouseClickEventArgs e)
|
||
{
|
||
base.OnNodeMouseClick(e);
|
||
|
||
if (e.Node != null && e.Node.Nodes.Count > 0)
|
||
{
|
||
if (e.X >= (e.Node.Level + 1) * 19 + 3)
|
||
{
|
||
if (e.Node.IsExpanded)
|
||
{
|
||
e.Node.Collapse();
|
||
}
|
||
else
|
||
{
|
||
e.Node.Expand();
|
||
}
|
||
}
|
||
}
|
||
|
||
SelectedNode = e.Node;
|
||
}
|
||
|
||
protected override void OnMouseWheel(MouseEventArgs e)
|
||
{
|
||
base.OnMouseWheel(e);
|
||
|
||
if (e.Delta > 10)
|
||
{
|
||
ScrollBarInfo.ScrollUp(Handle);
|
||
}
|
||
else if (e.Delta < -10)
|
||
{
|
||
ScrollBarInfo.ScrollDown(Handle);
|
||
}
|
||
|
||
SetScrollInfo();
|
||
}
|
||
|
||
public void SetScrollInfo()
|
||
{
|
||
if (Nodes.Count == 0)
|
||
{
|
||
Bar.Visible = false;
|
||
return;
|
||
}
|
||
|
||
var si = ScrollBarInfo.GetInfo(Handle);
|
||
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();
|
||
}
|
||
}
|
||
|
||
protected override void OnAfterExpand(TreeViewEventArgs e)
|
||
{
|
||
base.OnAfterExpand(e);
|
||
SetScrollInfo();
|
||
}
|
||
|
||
protected override void OnAfterCollapse(TreeViewEventArgs e)
|
||
{
|
||
base.OnAfterCollapse(e);
|
||
SetScrollInfo();
|
||
}
|
||
|
||
protected override void WndProc(ref Message m)
|
||
{
|
||
base.WndProc(ref m);
|
||
|
||
if (IsDisposed || Disposing) return;
|
||
ScrollBarInfo.ShowScrollBar(Handle, 3, false);
|
||
if (m.Msg == 0xf || m.Msg == 0x133)
|
||
{
|
||
if (BorderStyle == BorderStyle.FixedSingle)
|
||
{
|
||
ControlEx.ResetBorderColor(m, this, 1, Enabled ? RectColor : UIStyles.Blue.RectDisableColor);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
} |