mirror of
https://github.com/eggplantlwj/VisionEdit.git
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666 lines
23 KiB
C#
666 lines
23 KiB
C#
// ***********************************************************************
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// Assembly : HZH_Controls
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// Created : 08-08-2019
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//
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// ***********************************************************************
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// <copyright file="TreeViewEx.cs">
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// Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
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// </copyright>
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//
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// Blog: https://www.cnblogs.com/bfyx
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// GitHub：https://github.com/kwwwvagaa/NetWinformControl
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// gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
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//
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// If you use this code, please keep this note.
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// ***********************************************************************
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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using HZH_Controls.Properties;
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namespace HZH_Controls.Controls
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{
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/// <summary>
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/// Class TreeViewEx.
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/// Implements the <see cref="System.Windows.Forms.TreeView" />
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/// </summary>
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/// <seealso cref="System.Windows.Forms.TreeView" />
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public partial class TreeViewEx : TreeView
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{
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/// <summary>
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/// The ws vscroll
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/// </summary>
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private const int WS_VSCROLL = 2097152;
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/// <summary>
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/// The GWL style
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/// </summary>
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private const int GWL_STYLE = -16;
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/// <summary>
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/// The LST tips
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/// </summary>
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private Dictionary<string, string> _lstTips = new Dictionary<string, string>();
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/// <summary>
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/// The tip font
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/// </summary>
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private Font _tipFont = new Font("Arial Unicode MS", 12f);
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/// <summary>
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/// The tip image
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/// </summary>
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private Image _tipImage = Resources.tips;
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/// <summary>
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/// The is show tip
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/// </summary>
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private bool _isShowTip = false;
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/// <summary>
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/// The is show by custom model
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/// </summary>
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private bool _isShowByCustomModel = true;
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/// <summary>
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/// The node height
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/// </summary>
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private int _nodeHeight = 50;
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/// <summary>
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/// The node down pic
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/// </summary>
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private Image _nodeDownPic = Resources.list_add;
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/// <summary>
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/// The node up pic
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/// </summary>
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private Image _nodeUpPic = Resources.list_subtract;
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/// <summary>
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/// The node background color
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/// </summary>
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private Color _nodeBackgroundColor = Color.White;
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/// <summary>
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/// The node fore color
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/// </summary>
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private Color _nodeForeColor = Color.FromArgb(62, 62, 62);
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/// <summary>
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/// The node is show split line
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/// </summary>
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private bool _nodeIsShowSplitLine = false;
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/// <summary>
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/// The node split line color
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/// </summary>
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private Color _nodeSplitLineColor = Color.FromArgb(232, 232, 232);
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/// <summary>
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/// The m node selected color
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/// </summary>
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private Color m_nodeSelectedColor = Color.FromArgb(255, 77, 59);
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/// <summary>
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/// The m node selected fore color
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/// </summary>
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private Color m_nodeSelectedForeColor = Color.White;
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/// <summary>
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/// The parent node can select
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/// </summary>
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private bool _parentNodeCanSelect = true;
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/// <summary>
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/// The tree font size
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/// </summary>
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private SizeF treeFontSize = SizeF.Empty;
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/// <summary>
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/// The BLN has v bar
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/// </summary>
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private bool blnHasVBar = false;
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/// <summary>
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/// Gets or sets the LST tips.
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/// </summary>
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/// <value>The LST tips.</value>
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public Dictionary<string, string> LstTips
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{
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get
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{
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return this._lstTips;
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}
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set
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{
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this._lstTips = value;
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}
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}
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/// <summary>
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/// Gets or sets the tip font.
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/// </summary>
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/// <value>The tip font.</value>
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[Category("自定义属性"), Description("角标文字字体")]
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public Font TipFont
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{
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get
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{
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return this._tipFont;
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}
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set
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{
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this._tipFont = value;
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}
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}
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/// <summary>
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/// Gets or sets the tip image.
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/// </summary>
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/// <value>The tip image.</value>
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[Category("自定义属性"), Description("是否显示角标")]
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public Image TipImage
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{
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get
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{
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return this._tipImage;
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}
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set
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{
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this._tipImage = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether this instance is show tip.
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/// </summary>
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/// <value><c>true</c> if this instance is show tip; otherwise, <c>false</c>.</value>
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[Category("自定义属性"), Description("是否显示角标")]
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public bool IsShowTip
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{
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get
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{
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return this._isShowTip;
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}
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set
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{
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this._isShowTip = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether this instance is show by custom model.
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/// </summary>
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/// <value><c>true</c> if this instance is show by custom model; otherwise, <c>false</c>.</value>
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[Category("自定义属性"), Description("使用自定义模式")]
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public bool IsShowByCustomModel
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{
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get
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{
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return this._isShowByCustomModel;
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}
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set
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{
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this._isShowByCustomModel = value;
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}
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}
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/// <summary>
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/// Gets or sets the height of the node.
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/// </summary>
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/// <value>The height of the node.</value>
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[Category("自定义属性"), Description("节点高度（IsShowByCustomModel=true时生效）")]
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public int NodeHeight
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{
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get
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{
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return this._nodeHeight;
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}
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set
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{
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this._nodeHeight = value;
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base.ItemHeight = value;
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}
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}
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/// <summary>
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/// Gets or sets the node down pic.
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/// </summary>
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/// <value>The node down pic.</value>
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[Category("自定义属性"), Description("下翻图标（IsShowByCustomModel=true时生效）")]
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public Image NodeDownPic
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{
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get
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{
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return this._nodeDownPic;
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}
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set
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{
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this._nodeDownPic = value;
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}
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}
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/// <summary>
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/// Gets or sets the node up pic.
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/// </summary>
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/// <value>The node up pic.</value>
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[Category("自定义属性"), Description("上翻图标（IsShowByCustomModel=true时生效）")]
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public Image NodeUpPic
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{
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get
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{
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return this._nodeUpPic;
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}
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set
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{
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this._nodeUpPic = value;
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}
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}
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/// <summary>
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/// Gets or sets the color of the node background.
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/// </summary>
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/// <value>The color of the node background.</value>
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[Category("自定义属性"), Description("节点背景颜色（IsShowByCustomModel=true时生效）")]
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public Color NodeBackgroundColor
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{
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get
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{
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return this._nodeBackgroundColor;
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}
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set
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{
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this._nodeBackgroundColor = value;
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}
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}
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/// <summary>
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/// Gets or sets the color of the node fore.
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/// </summary>
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/// <value>The color of the node fore.</value>
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[Category("自定义属性"), Description("节点字体颜色（IsShowByCustomModel=true时生效）")]
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public Color NodeForeColor
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{
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get
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{
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return this._nodeForeColor;
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}
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set
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{
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this._nodeForeColor = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether [node is show split line].
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/// </summary>
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/// <value><c>true</c> if [node is show split line]; otherwise, <c>false</c>.</value>
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[Category("自定义属性"), Description("节点是否显示分割线（IsShowByCustomModel=true时生效）")]
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public bool NodeIsShowSplitLine
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{
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get
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{
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return this._nodeIsShowSplitLine;
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}
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set
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{
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this._nodeIsShowSplitLine = value;
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}
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}
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/// <summary>
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/// Gets or sets the color of the node split line.
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/// </summary>
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/// <value>The color of the node split line.</value>
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[Category("自定义属性"), Description("节点分割线颜色（IsShowByCustomModel=true时生效）")]
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public Color NodeSplitLineColor
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{
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get
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{
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return this._nodeSplitLineColor;
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}
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set
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{
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this._nodeSplitLineColor = value;
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}
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}
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/// <summary>
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/// Gets or sets the color of the node selected.
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/// </summary>
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/// <value>The color of the node selected.</value>
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[Category("自定义属性"), Description("选中节点背景颜色（IsShowByCustomModel=true时生效）")]
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public Color NodeSelectedColor
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{
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get
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{
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return this.m_nodeSelectedColor;
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}
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set
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{
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this.m_nodeSelectedColor = value;
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}
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}
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/// <summary>
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/// Gets or sets the color of the node selected fore.
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/// </summary>
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/// <value>The color of the node selected fore.</value>
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[Category("自定义属性"), Description("选中节点字体颜色（IsShowByCustomModel=true时生效）")]
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public Color NodeSelectedForeColor
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{
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get
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{
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return this.m_nodeSelectedForeColor;
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}
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set
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{
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this.m_nodeSelectedForeColor = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether [parent node can select].
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/// </summary>
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/// <value><c>true</c> if [parent node can select]; otherwise, <c>false</c>.</value>
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[Category("自定义属性"), Description("父节点是否可选中")]
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public bool ParentNodeCanSelect
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{
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get
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{
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return this._parentNodeCanSelect;
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}
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set
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{
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this._parentNodeCanSelect = value;
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="TreeViewEx" /> class.
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/// </summary>
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public TreeViewEx()
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{
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base.HideSelection = false;
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base.DrawMode = TreeViewDrawMode.OwnerDrawAll;
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base.DrawNode += new DrawTreeNodeEventHandler(this.treeview_DrawNode);
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base.NodeMouseClick += new TreeNodeMouseClickEventHandler(this.TreeViewEx_NodeMouseClick);
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base.SizeChanged += new EventHandler(this.TreeViewEx_SizeChanged);
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base.AfterSelect += new TreeViewEventHandler(this.TreeViewEx_AfterSelect);
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base.FullRowSelect = true;
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base.ShowLines = false;
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base.ShowPlusMinus = false;
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base.ShowRootLines = false;
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this.BackColor = Color.White;
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this.BorderStyle = System.Windows.Forms.BorderStyle.None;
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DoubleBuffered = true;
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}
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/// <summary>
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/// 重写 <see cref="M:System.Windows.Forms.Control.WndProc(System.Windows.Forms.Message@)" />。
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/// </summary>
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/// <param name="m">要处理的 Windows<see cref="T:System.Windows.Forms.Message" />。</param>
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0x0014) // 禁掉清除背景消息WM_ERASEBKGND
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return;
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base.WndProc(ref m);
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}
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/// <summary>
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/// Handles the AfterSelect event of the TreeViewEx control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="TreeViewEventArgs" /> instance containing the event data.</param>
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private void TreeViewEx_AfterSelect(object sender, TreeViewEventArgs e)
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{
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try
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{
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if (e.Node != null)
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{
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if (!this._parentNodeCanSelect)
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{
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if (e.Node.Nodes.Count > 0)
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{
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e.Node.Expand();
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base.SelectedNode = e.Node.Nodes[0];
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}
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}
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// Handles the SizeChanged event of the TreeViewEx control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void TreeViewEx_SizeChanged(object sender, EventArgs e)
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{
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this.Refresh();
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}
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/// <summary>
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/// Handles the NodeMouseClick event of the TreeViewEx control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="TreeNodeMouseClickEventArgs" /> instance containing the event data.</param>
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private void TreeViewEx_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
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{
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try
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{
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if (e.Node != null)
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{
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if (e.Node.Nodes.Count > 0)
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{
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if (e.Node.IsExpanded)
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{
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e.Node.Collapse();
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}
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else
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{
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e.Node.Expand();
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}
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}
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if (base.SelectedNode != null)
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{
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if (base.SelectedNode == e.Node && e.Node.IsExpanded)
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{
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if (!this._parentNodeCanSelect)
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{
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if (e.Node.Nodes.Count > 0)
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{
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base.SelectedNode = e.Node.Nodes[0];
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}
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}
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}
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}
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// Handles the DrawNode event of the treeview control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="DrawTreeNodeEventArgs" /> instance containing the event data.</param>
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private void treeview_DrawNode(object sender, DrawTreeNodeEventArgs e)
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{
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try
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{
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if (e.Node == null || !this._isShowByCustomModel || (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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e.Graphics.SetGDIHigh();
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if (base.Nodes.IndexOf(e.Node) == 0)
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{
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this.blnHasVBar = this.IsVerticalScrollBarVisible();
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}
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Font font = e.Node.NodeFont;
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if (font == null)
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{
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font = ((TreeView)sender).Font;
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}
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if (this.treeFontSize == SizeF.Empty)
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{
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this.treeFontSize = this.GetFontSize(font, e.Graphics);
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}
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bool flag = false;
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int intLeft = 0;
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if (CheckBoxes)
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{
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intLeft = 20;
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}
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int num = 0;
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if (base.ImageList != null && base.ImageList.Images.Count > 0 && e.Node.ImageIndex >= 0 && e.Node.ImageIndex < base.ImageList.Images.Count)
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{
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flag = true;
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num = (e.Bounds.Height - base.ImageList.ImageSize.Height) / 2;
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intLeft += base.ImageList.ImageSize.Width;
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}
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intLeft += e.Node.Level * Indent;
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if ((e.State == TreeNodeStates.Selected || e.State == TreeNodeStates.Focused || e.State == (TreeNodeStates.Focused | TreeNodeStates.Selected)) && (this._parentNodeCanSelect || e.Node.Nodes.Count <= 0))
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{
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e.Graphics.FillRectangle(new SolidBrush(this.m_nodeSelectedColor), new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(base.Width, e.Node.Bounds.Height)));
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e.Graphics.DrawString(e.Node.Text, font, new SolidBrush(this.m_nodeSelectedForeColor), (float)e.Bounds.X + intLeft, (float)e.Bounds.Y + ((float)this._nodeHeight - this.treeFontSize.Height) / 2f);
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}
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else
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{
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e.Graphics.FillRectangle(new SolidBrush(this._nodeBackgroundColor), new Rectangle(new Point(0, e.Node.Bounds.Y), new Size(base.Width, e.Node.Bounds.Height)));
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e.Graphics.DrawString(e.Node.Text, font, new SolidBrush(this._nodeForeColor), (float)e.Bounds.X + intLeft, (float)e.Bounds.Y + ((float)this._nodeHeight - this.treeFontSize.Height) / 2f);
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}
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if (CheckBoxes)
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{
|
||
Rectangle rectCheck = new Rectangle(e.Bounds.X + 3 + e.Node.Level * Indent, e.Bounds.Y + (e.Bounds.Height - 16) / 2, 16, 16);
|
||
GraphicsPath pathCheck = rectCheck.CreateRoundedRectanglePath(3);
|
||
e.Graphics.FillPath(new SolidBrush(Color.FromArgb(247, 247, 247)), pathCheck);
|
||
if (e.Node.Checked)
|
||
{
|
||
e.Graphics.DrawLines(new Pen(new SolidBrush(m_nodeSelectedColor),2), new Point[]
|
||
{
|
||
new Point(rectCheck.Left+2,rectCheck.Top+8),
|
||
new Point(rectCheck.Left+6,rectCheck.Top+12),
|
||
new Point(rectCheck.Right-4,rectCheck.Top+4)
|
||
});
|
||
}
|
||
|
||
e.Graphics.DrawPath(new Pen(new SolidBrush(Color.FromArgb(200, 200, 200))), pathCheck);
|
||
}
|
||
if (flag)
|
||
{
|
||
int num2 = e.Bounds.X - num - base.ImageList.ImageSize.Width;
|
||
if (num2 < 0)
|
||
{
|
||
num2 = 3;
|
||
}
|
||
e.Graphics.DrawImage(base.ImageList.Images[e.Node.ImageIndex], new Rectangle(new Point(num2 + intLeft - base.ImageList.ImageSize.Width, e.Bounds.Y + num), base.ImageList.ImageSize));
|
||
}
|
||
if (this._nodeIsShowSplitLine)
|
||
{
|
||
e.Graphics.DrawLine(new Pen(this._nodeSplitLineColor, 1f), new Point(0, e.Bounds.Y + this._nodeHeight - 1), new Point(base.Width, e.Bounds.Y + this._nodeHeight - 1));
|
||
}
|
||
bool flag2 = false;
|
||
if (e.Node.Nodes.Count > 0)
|
||
{
|
||
if (e.Node.IsExpanded && this._nodeUpPic != null)
|
||
{
|
||
e.Graphics.DrawImage(this._nodeUpPic, new Rectangle(base.Width - (this.blnHasVBar ? 50 : 30), e.Bounds.Y + (this._nodeHeight - 20) / 2, 20, 20));
|
||
}
|
||
else if (this._nodeDownPic != null)
|
||
{
|
||
e.Graphics.DrawImage(this._nodeDownPic, new Rectangle(base.Width - (this.blnHasVBar ? 50 : 30), e.Bounds.Y + (this._nodeHeight - 20) / 2, 20, 20));
|
||
}
|
||
flag2 = true;
|
||
}
|
||
if (this._isShowTip && this._lstTips.ContainsKey(e.Node.Name) && !string.IsNullOrWhiteSpace(this._lstTips[e.Node.Name]))
|
||
{
|
||
int num3 = base.Width - (this.blnHasVBar ? 50 : 30) - (flag2 ? 20 : 0);
|
||
int num4 = e.Bounds.Y + (this._nodeHeight - 20) / 2;
|
||
e.Graphics.DrawImage(this._tipImage, new Rectangle(num3, num4, 20, 20));
|
||
SizeF sizeF = e.Graphics.MeasureString(this._lstTips[e.Node.Name], this._tipFont, 100, StringFormat.GenericTypographic);
|
||
e.Graphics.DrawString(this._lstTips[e.Node.Name], this._tipFont, new SolidBrush(Color.White), (float)(num3 + 10) - sizeF.Width / 2f - 3f, (float)(num4 + 10) - sizeF.Height / 2f);
|
||
}
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw ex;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the size of the font.
|
||
/// </summary>
|
||
/// <param name="font">The font.</param>
|
||
/// <param name="g">The g.</param>
|
||
/// <returns>SizeF.</returns>
|
||
private SizeF GetFontSize(Font font, Graphics g = null)
|
||
{
|
||
SizeF result;
|
||
try
|
||
{
|
||
bool flag = false;
|
||
if (g == null)
|
||
{
|
||
g = base.CreateGraphics();
|
||
flag = true;
|
||
}
|
||
SizeF sizeF = g.MeasureString("a", font, 100, StringFormat.GenericTypographic);
|
||
if (flag)
|
||
{
|
||
g.Dispose();
|
||
}
|
||
result = sizeF;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw ex;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the window long.
|
||
/// </summary>
|
||
/// <param name="hwnd">The HWND.</param>
|
||
/// <param name="nIndex">Index of the n.</param>
|
||
/// <returns>System.Int32.</returns>
|
||
[DllImport("user32", CharSet = CharSet.Auto)]
|
||
private static extern int GetWindowLong(IntPtr hwnd, int nIndex);
|
||
|
||
/// <summary>
|
||
/// Determines whether [is vertical scroll bar visible].
|
||
/// </summary>
|
||
/// <returns><c>true</c> if [is vertical scroll bar visible]; otherwise, <c>false</c>.</returns>
|
||
private bool IsVerticalScrollBarVisible()
|
||
{
|
||
return base.IsHandleCreated && (TreeViewEx.GetWindowLong(base.Handle, -16) & 2097152) != 0;
|
||
}
|
||
}
|
||
}
|
