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424 lines
16 KiB
C#
424 lines
16 KiB
C#
// ***********************************************************************
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// Assembly : HZH_Controls
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// Created : 2019-09-11
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//
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// ***********************************************************************
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// <copyright file="UCMindMapping.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.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.ComponentModel;
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namespace HZH_Controls.Controls
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{
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/// <summary>
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/// Class UCMindMapping.
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/// Implements the <see cref="System.Windows.Forms.UserControl" />
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/// </summary>
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/// <seealso cref="System.Windows.Forms.UserControl" />
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internal class UCMindMapping : UserControl
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{
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/// <summary>
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/// The item context menu strip
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/// </summary>
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private ContextMenuStrip itemContextMenuStrip;
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/// <summary>
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/// Gets or sets the item context menu strip.
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/// </summary>
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/// <value>The item context menu strip.</value>
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[Description("节点关联的右键菜单"), Category("自定义")]
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public ContextMenuStrip ItemContextMenuStrip
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{
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get { return itemContextMenuStrip; }
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set { itemContextMenuStrip = value; }
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}
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/// <summary>
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/// The item backcolor
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/// </summary>
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private Color itemBackcolor = Color.FromArgb(255, 77, 59);
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/// <summary>
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/// Gets or sets the item backcolor.
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/// </summary>
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/// <value>The item backcolor.</value>
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[Description("节点背景色，优先级小于数据源中设置的背景色"), Category("自定义")]
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public Color ItemBackcolor
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{
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get { return itemBackcolor; }
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set
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{
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itemBackcolor = value;
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Refresh();
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}
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}
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/// <summary>
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/// The line color
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/// </summary>
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private Color lineColor = Color.Black;
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/// <summary>
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/// Gets or sets the color of the line.
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/// </summary>
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/// <value>The color of the line.</value>
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[Description("线条颜色"), Category("自定义")]
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public Color LineColor
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{
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get { return lineColor; }
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set
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{
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lineColor = value;
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Refresh();
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}
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}
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/// <summary>
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/// The split width
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/// </summary>
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private int splitWidth = 50;
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// private int itemHeight = 20;
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/// <summary>
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/// The padding
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/// </summary>
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private int padding = 20;
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/// <summary>
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/// The m rect working
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/// </summary>
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Rectangle m_rectWorking = Rectangle.Empty;
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/// <summary>
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/// Occurs when [item clicked].
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/// </summary>
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public event EventHandler ItemClicked;
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/// <summary>
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/// The data source
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/// </summary>
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private MindMappingItemEntity dataSource;
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/// <summary>
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/// The select entity
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/// </summary>
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private MindMappingItemEntity selectEntity;
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/// <summary>
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/// Gets the select entity.
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/// </summary>
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/// <value>The select entity.</value>
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[Description("选中的数据源"), Category("自定义")]
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public MindMappingItemEntity SelectEntity
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{
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get { return selectEntity; }
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private set { selectEntity = value; }
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}
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/// <summary>
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/// Gets or sets the data source.
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/// </summary>
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/// <value>The data source.</value>
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[Description("数据源"), Category("自定义")]
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public MindMappingItemEntity DataSource
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{
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get { return dataSource; }
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set
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{
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dataSource = value;
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ResetSize();
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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="UCMindMapping" /> class.
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/// </summary>
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public UCMindMapping()
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{
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.DoubleBuffer, true);
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this.SetStyle(ControlStyles.ResizeRedraw, true);
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this.SetStyle(ControlStyles.Selectable, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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this.SetStyle(ControlStyles.UserPaint, true);
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this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
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this.Click += UCMindMapping_Click;
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this.DoubleClick += UCMindMapping_DoubleClick;
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this.Load += UCMindMapping_Load;
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this.MouseClick += UCMindMapping_MouseClick;
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}
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/// <summary>
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/// Handles the Load event of the UCMindMapping 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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void UCMindMapping_Load(object sender, EventArgs e)
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{
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if (this.Parent != null)
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{
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//父控件大小改变时重置大小和位置
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this.Parent.SizeChanged += (a, b) =>
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{
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ResetSize();
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};
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}
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}
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/// <summary>
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/// 双击处理，主要用于检测节点双击展开折叠
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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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void UCMindMapping_DoubleClick(object sender, EventArgs e)
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{
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var mouseLocation = this.PointToClient(Control.MousePosition);
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bool bln = CheckDrawRectClick(dataSource, mouseLocation);
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if (bln)
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{
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ResetSize();
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this.Parent.Refresh();
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}
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}
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/// <summary>
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/// 单击处理，主要用于单击节点事件和，展开关闭圆圈处理
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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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void UCMindMapping_Click(object sender, EventArgs e)
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{
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var mouseLocation = this.PointToClient(Control.MousePosition);
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bool bln = CheckExpansionClick(dataSource, mouseLocation);
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if (bln)
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{
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ResetSize();
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this.Parent.Refresh();
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}
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}
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/// <summary>
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/// Handles the MouseClick event of the UCMindMapping 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="MouseEventArgs"/> instance containing the event data.</param>
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void UCMindMapping_MouseClick(object sender, MouseEventArgs e)
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{
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if (itemContextMenuStrip != null && e.Button == System.Windows.Forms.MouseButtons.Right)
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{
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bool bln = CheckDrawRectClick(dataSource, e.Location, false);
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if (bln)
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{
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itemContextMenuStrip.Show(this.PointToScreen(e.Location));
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}
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}
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}
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/// <summary>
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/// 双击检查
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="mouseLocation">The mouse location.</param>
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/// <param name="blnDoExpansion">if set to <c>true</c> [BLN do expansion].</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
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private bool CheckDrawRectClick(MindMappingItemEntity item, Point mouseLocation, bool blnDoExpansion = true)
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{
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if (item == null)
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return false;
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else
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{
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if (item.DrawRectangle.Contains(mouseLocation))
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{
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if (blnDoExpansion)
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item.IsExpansion = !item.IsExpansion;
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return true;
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}
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if (item.Childrens != null && item.Childrens.Length > 0)
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{
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foreach (var child in item.Childrens)
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{
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var bln = CheckDrawRectClick(child, mouseLocation, blnDoExpansion);
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if (bln)
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return bln;
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}
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}
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}
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return false;
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}
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/// <summary>
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/// 单击检查
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="mouseLocation">The mouse location.</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
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private bool CheckExpansionClick(MindMappingItemEntity item, Point mouseLocation)
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{
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if (item == null)
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return false;
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else
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{
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if (item.DrawRectangle.Contains(mouseLocation))
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{
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selectEntity = item;
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if (ItemClicked != null )
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{
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ItemClicked(item, null);
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}
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}
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if (item.ExpansionRectangle.Contains(mouseLocation))
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{
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item.IsExpansion = !item.IsExpansion;
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return true;
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}
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if (item.Childrens != null && item.Childrens.Length > 0)
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{
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foreach (var child in item.Childrens)
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{
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var bln = CheckExpansionClick(child, mouseLocation);
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if (bln)
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return bln;
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}
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}
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}
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return false;
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}
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/// <summary>
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/// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
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/// </summary>
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/// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
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protected override void OnPaint(PaintEventArgs e)
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{
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try
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{
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base.OnPaint(e);
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if (m_rectWorking == Rectangle.Empty || m_rectWorking == null)
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return;
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var g = e.Graphics;
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g.SetGDIHigh();
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int intHeight = dataSource.AllChildrensMaxShowHeight;
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dataSource.WorkingRectangle = new RectangleF(m_rectWorking.Left, m_rectWorking.Top + (m_rectWorking.Height - intHeight) / 2, m_rectWorking.Width, intHeight);
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DrawItem(dataSource, g);
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}
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catch (Exception exc)
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{
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MessageBox.Show(exc.ToString(), "错误");
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}
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}
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/// <summary>
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/// 画节点
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="g">The g.</param>
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private void DrawItem(MindMappingItemEntity item, Graphics g)
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{
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//节点
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var size = g.MeasureString(item.Text, item.Font);
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item.DrawRectangle = new RectangleF(item.WorkingRectangle.Left + 2, item.WorkingRectangle.Top + (item.WorkingRectangle.Height - size.Height) / 2 + 2, size.Width + 4, size.Height + 4);
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GraphicsPath drawPath = item.DrawRectangle.CreateRoundedRectanglePath(5);
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if (item.BackColor.HasValue)
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g.FillPath(new SolidBrush(item.BackColor.Value), drawPath);
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else
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g.FillPath(new SolidBrush(itemBackcolor), drawPath);
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g.DrawString(item.Text, item.Font, new SolidBrush(item.ForeColor), item.DrawRectangle.Location.X + 2, item.DrawRectangle.Location.Y + 2);
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//子节点
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if (item.Childrens != null && item.IsExpansion)
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{
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for (int i = 0; i < item.Childrens.Length; i++)
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{
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var child = item.Childrens[i];
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if (i == 0)
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{
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child.WorkingRectangle = new RectangleF(item.DrawRectangle.Right + splitWidth, item.WorkingRectangle.Top, item.WorkingRectangle.Width - (item.DrawRectangle.Width + splitWidth), child.AllChildrensMaxShowHeight);
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}
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else
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{
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child.WorkingRectangle = new RectangleF(item.DrawRectangle.Right + splitWidth, item.Childrens[i - 1].WorkingRectangle.Bottom, item.WorkingRectangle.Width - (item.DrawRectangle.Width + splitWidth), child.AllChildrensMaxShowHeight);
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}
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DrawItem(child, g);
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}
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}
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//连线
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if (item.ParentItem != null)
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{
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g.DrawLines(new Pen(new SolidBrush(lineColor), 1), new PointF[]
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{
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new PointF(item.ParentItem.DrawRectangle.Right,item.ParentItem.DrawRectangle.Top+item.ParentItem.DrawRectangle.Height/2),
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new PointF(item.ParentItem.DrawRectangle.Right+12,item.ParentItem.DrawRectangle.Top+item.ParentItem.DrawRectangle.Height/2),
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//new PointF(item.ParentItem.DrawRectangle.Right+12,item.DrawRectangle.Top+item.DrawRectangle.Height/2),
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new PointF(item.DrawRectangle.Left-12,item.DrawRectangle.Top+item.DrawRectangle.Height/2),
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new PointF(item.DrawRectangle.Left,item.DrawRectangle.Top+item.DrawRectangle.Height/2),
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});
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}
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//展开折叠按钮
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if (item.Childrens != null && item.Childrens.Length > 0)
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{
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RectangleF _rect = new RectangleF(item.DrawRectangle.Right + 1, item.DrawRectangle.Top + (item.DrawRectangle.Height - 10) / 2, 10, 10);
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item.ExpansionRectangle = _rect;
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g.FillEllipse(new SolidBrush(this.BackColor), _rect);
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g.DrawEllipse(new Pen(new SolidBrush(Color.Black)), _rect);
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g.DrawLine(new Pen(new SolidBrush(lineColor)), _rect.Left + 2, _rect.Y + _rect.Height / 2, _rect.Right - 2, _rect.Y + _rect.Height / 2);
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if (!item.IsExpansion)
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{
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g.DrawLine(new Pen(new SolidBrush(lineColor)), _rect.Left + _rect.Width / 2, _rect.Top + 2, _rect.Left + _rect.Width / 2, _rect.Bottom - 2);
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}
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}
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}
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/// <summary>
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/// 重置大小
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/// </summary>
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private void ResetSize()
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{
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if (this.Parent == null)
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return;
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try
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{
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ControlHelper.FreezeControl(this, true);
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if (dataSource == null)
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{
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m_rectWorking = Rectangle.Empty;
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this.Size = this.Parent.Size;
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}
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else
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{
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int intWidth = dataSource.AllChildrensMaxShowWidth;
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int intHeight = dataSource.AllChildrensMaxShowHeight;
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this.Width = intWidth + padding * 2;
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this.Height = intHeight + padding * 2;
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if (this.Width < this.Parent.Width)
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this.Width = this.Parent.Width;
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m_rectWorking = new Rectangle(padding, padding, intWidth, intHeight);
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if (this.Height > this.Parent.Height)
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{
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//this.Location = new Point(0, 0);
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}
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else
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this.Location = new Point(0, (this.Parent.Height - this.Height) / 2);
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}
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}
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finally
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{
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ControlHelper.FreezeControl(this, false);
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}
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}
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}
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}
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