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542 lines
21 KiB
C#
542 lines
21 KiB
C#
// ***********************************************************************
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// Assembly : HZH_Controls
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// Created : 08-17-2019
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//
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// ***********************************************************************
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// <copyright file="TabControlExt.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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namespace HZH_Controls.Controls
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{
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/// <summary>
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/// Class TabControlExt.
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/// Implements the <see cref="System.Windows.Forms.TabControl" />
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/// </summary>
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/// <seealso cref="System.Windows.Forms.TabControl" />
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public class TabControlExt : TabControl
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="TabControlExt" /> class.
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/// </summary>
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public TabControlExt()
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: base()
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{
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SetStyles();
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//this.Multiline = true;
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this.ItemSize = new Size(this.ItemSize.Width, 50);
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}
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/// <summary>
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/// Sets the styles.
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/// </summary>
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private void SetStyles()
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{
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base.SetStyle(
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ControlStyles.UserPaint |
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ControlStyles.DoubleBuffer |
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ControlStyles.OptimizedDoubleBuffer |
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ControlStyles.AllPaintingInWmPaint |
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ControlStyles.ResizeRedraw |
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ControlStyles.SupportsTransparentBackColor, true);
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base.UpdateStyles();
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}
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/// <summary>
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/// Gets or sets a value indicating whether this instance is show close BTN.
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/// </summary>
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/// <value><c>true</c> if this instance is show close BTN; otherwise, <c>false</c>.</value>
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[Description("是否显示关闭按钮"), Category("自定义")]
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public bool IsShowCloseBtn { get; set; }
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/// <summary>
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/// The back color
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/// </summary>
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private Color _backColor = Color.White;
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/// <summary>
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/// 此成员对于此控件无意义。
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/// </summary>
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/// <value>The color of the back.</value>
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[Browsable(true)]
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[EditorBrowsable(EditorBrowsableState.Always)]
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[DefaultValue(typeof(Color), "White")]
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public override Color BackColor
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{
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get { return _backColor; }
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set
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{
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_backColor = value;
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base.Invalidate(true);
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}
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}
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/// <summary>
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/// The border color
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/// </summary>
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private Color _borderColor = Color.FromArgb(232, 232, 232);
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/// <summary>
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/// Gets or sets the color of the border.
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/// </summary>
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/// <value>The color of the border.</value>
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[DefaultValue(typeof(Color), "232, 232, 232")]
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[Description("TabContorl边框色")]
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public Color BorderColor
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{
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get { return _borderColor; }
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set
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{
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_borderColor = value;
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base.Invalidate(true);
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}
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}
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/// <summary>
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/// The head selected back color
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/// </summary>
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private Color _headSelectedBackColor = Color.FromArgb(255, 85, 51);
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/// <summary>
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/// Gets or sets the color of the head selected back.
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/// </summary>
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/// <value>The color of the head selected back.</value>
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[DefaultValue(typeof(Color), "255, 85, 51")]
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[Description("TabPage头部选中后的背景颜色")]
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public Color HeadSelectedBackColor
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{
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get { return _headSelectedBackColor; }
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set { _headSelectedBackColor = value; }
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}
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/// <summary>
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/// The head selected border color
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/// </summary>
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private Color _headSelectedBorderColor = Color.FromArgb(232, 232, 232);
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/// <summary>
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/// Gets or sets the color of the head selected border.
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/// </summary>
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/// <value>The color of the head selected border.</value>
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[DefaultValue(typeof(Color), "232, 232, 232")]
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[Description("TabPage头部选中后的边框颜色")]
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public Color HeadSelectedBorderColor
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{
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get { return _headSelectedBorderColor; }
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set { _headSelectedBorderColor = value; }
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}
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/// <summary>
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/// The header back color
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/// </summary>
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private Color _headerBackColor = Color.White;
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/// <summary>
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/// Gets or sets the color of the header back.
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/// </summary>
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/// <value>The color of the header back.</value>
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[DefaultValue(typeof(Color), "White")]
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[Description("TabPage头部默认背景颜色")]
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public Color HeaderBackColor
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{
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get { return _headerBackColor; }
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set { _headerBackColor = value; }
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}
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/// <summary>
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/// 绘制控件的背景。
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/// </summary>
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/// <param name="pevent">包含有关要绘制的控件的信息的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
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protected override void OnPaintBackground(PaintEventArgs pevent)
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{
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if (this.DesignMode == true)
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{
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LinearGradientBrush backBrush = new LinearGradientBrush(
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this.Bounds,
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SystemColors.ControlLightLight,
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SystemColors.ControlLight,
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LinearGradientMode.Vertical);
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pevent.Graphics.FillRectangle(backBrush, this.Bounds);
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backBrush.Dispose();
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}
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else
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{
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this.PaintTransparentBackground(pevent.Graphics, this.ClientRectangle);
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}
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}
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/// <summary>
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/// TabContorl 背景色设置
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/// </summary>
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/// <param name="g">The g.</param>
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/// <param name="clipRect">The clip rect.</param>
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protected void PaintTransparentBackground(Graphics g, Rectangle clipRect)
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{
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if ((this.Parent != null))
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{
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clipRect.Offset(this.Location);
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PaintEventArgs e = new PaintEventArgs(g, clipRect);
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GraphicsState state = g.Save();
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g.SmoothingMode = SmoothingMode.HighSpeed;
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try
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{
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g.TranslateTransform((float)-this.Location.X, (float)-this.Location.Y);
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this.InvokePaintBackground(this.Parent, e);
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this.InvokePaint(this.Parent, e);
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}
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finally
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{
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g.Restore(state);
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clipRect.Offset(-this.Location.X, -this.Location.Y);
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//新加片段,待测试
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using (SolidBrush brush = new SolidBrush(_backColor))
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{
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clipRect.Inflate(1, 1);
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g.FillRectangle(brush, clipRect);
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}
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}
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}
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else
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{
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System.Drawing.Drawing2D.LinearGradientBrush backBrush = new System.Drawing.Drawing2D.LinearGradientBrush(this.Bounds, SystemColors.ControlLightLight, SystemColors.ControlLight, System.Drawing.Drawing2D.LinearGradientMode.Vertical);
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g.FillRectangle(backBrush, this.Bounds);
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backBrush.Dispose();
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}
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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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// Paint the Background
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base.OnPaint(e);
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this.PaintTransparentBackground(e.Graphics, this.ClientRectangle);
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this.PaintAllTheTabs(e);
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this.PaintTheTabPageBorder(e);
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this.PaintTheSelectedTab(e);
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}
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/// <summary>
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/// Paints all the tabs.
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/// </summary>
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/// <param name="e">The <see cref="System.Windows.Forms.PaintEventArgs" /> instance containing the event data.</param>
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private void PaintAllTheTabs(System.Windows.Forms.PaintEventArgs e)
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{
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if (this.TabCount > 0)
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{
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for (int index = 0; index < this.TabCount; index++)
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{
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this.PaintTab(e, index);
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}
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}
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}
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/// <summary>
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/// Paints the tab.
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/// </summary>
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/// <param name="e">The <see cref="System.Windows.Forms.PaintEventArgs" /> instance containing the event data.</param>
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/// <param name="index">The index.</param>
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private void PaintTab(System.Windows.Forms.PaintEventArgs e, int index)
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{
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GraphicsPath path = this.GetTabPath(index);
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this.PaintTabBackground(e.Graphics, index, path);
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this.PaintTabBorder(e.Graphics, index, path);
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this.PaintTabText(e.Graphics, index);
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this.PaintTabImage(e.Graphics, index);
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if (IsShowCloseBtn)
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{
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Rectangle rect = this.GetTabRect(index);
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e.Graphics.DrawLine(new Pen(_borderColor, 1F), new Point(rect.Right - 15, rect.Top + 5), new Point(rect.Right - 5, rect.Top + 15));
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e.Graphics.DrawLine(new Pen(_borderColor, 1F), new Point(rect.Right - 5, rect.Top + 5), new Point(rect.Right - 15, rect.Top + 15));
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}
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}
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/// <summary>
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/// 设置选项卡头部颜色
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/// </summary>
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/// <param name="graph">The graph.</param>
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/// <param name="index">The index.</param>
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/// <param name="path">The path.</param>
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private void PaintTabBackground(System.Drawing.Graphics graph, int index, System.Drawing.Drawing2D.GraphicsPath path)
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{
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Rectangle rect = this.GetTabRect(index);
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if (rect.Width == 0 || rect.Height == 0) return;
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System.Drawing.Brush buttonBrush = new System.Drawing.Drawing2D.LinearGradientBrush(rect, _headerBackColor, _headerBackColor, LinearGradientMode.Vertical); //非选中时候的 TabPage 页头部背景色
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graph.FillPath(buttonBrush, path);
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//if (index == this.SelectedIndex)
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//{
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// //buttonBrush = new System.Drawing.SolidBrush(_headSelectedBackColor);
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// graph.DrawLine(new Pen(_headerBackColor), rect.Right+2, rect.Bottom, rect.Left + 1, rect.Bottom);
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//}
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buttonBrush.Dispose();
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}
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/// <summary>
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/// 设置选项卡头部边框色
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/// </summary>
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/// <param name="graph">The graph.</param>
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/// <param name="index">The index.</param>
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/// <param name="path">The path.</param>
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private void PaintTabBorder(System.Drawing.Graphics graph, int index, System.Drawing.Drawing2D.GraphicsPath path)
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{
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Pen borderPen = new Pen(_borderColor);// TabPage 非选中时候的 TabPage 头部边框色
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if (index == this.SelectedIndex)
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{
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borderPen = new Pen(_headSelectedBorderColor); // TabPage 选中后的 TabPage 头部边框色
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}
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graph.DrawPath(borderPen, path);
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borderPen.Dispose();
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}
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/// <summary>
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/// Paints the tab image.
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/// </summary>
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/// <param name="g">The g.</param>
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/// <param name="index">The index.</param>
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private void PaintTabImage(System.Drawing.Graphics g, int index)
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{
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Image tabImage = null;
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if (this.TabPages[index].ImageIndex > -1 && this.ImageList != null)
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{
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tabImage = this.ImageList.Images[this.TabPages[index].ImageIndex];
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}
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else if (this.TabPages[index].ImageKey.Trim().Length > 0 && this.ImageList != null)
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{
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tabImage = this.ImageList.Images[this.TabPages[index].ImageKey];
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}
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if (tabImage != null)
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{
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Rectangle rect = this.GetTabRect(index);
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g.DrawImage(tabImage, rect.Right - rect.Height - 4, 4, rect.Height - 2, rect.Height - 2);
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}
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}
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/// <summary>
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/// Paints the tab text.
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/// </summary>
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/// <param name="graph">The graph.</param>
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/// <param name="index">The index.</param>
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private void PaintTabText(System.Drawing.Graphics graph, int index)
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{
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string tabtext = this.TabPages[index].Text;
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System.Drawing.StringFormat format = new System.Drawing.StringFormat();
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format.Alignment = StringAlignment.Near;
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format.LineAlignment = StringAlignment.Center;
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format.Trimming = StringTrimming.EllipsisCharacter;
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Brush forebrush = null;
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if (this.TabPages[index].Enabled == false)
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{
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forebrush = SystemBrushes.ControlDark;
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}
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else
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{
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forebrush = SystemBrushes.ControlText;
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}
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Font tabFont = this.Font;
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if (index == this.SelectedIndex)
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{
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if (this.TabPages[index].Enabled != false)
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{
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forebrush = new SolidBrush(_headSelectedBackColor);
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}
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}
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Rectangle rect = this.GetTabRect(index);
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var txtSize = ControlHelper.GetStringWidth(tabtext, graph, tabFont);
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Rectangle rect2 = new Rectangle(rect.Left + (rect.Width - txtSize) / 2 - 1, rect.Top, rect.Width, rect.Height);
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graph.DrawString(tabtext, tabFont, forebrush, rect2, format);
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}
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/// <summary>
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/// 设置 TabPage 内容页边框色
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/// </summary>
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/// <param name="e">The <see cref="System.Windows.Forms.PaintEventArgs" /> instance containing the event data.</param>
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private void PaintTheTabPageBorder(System.Windows.Forms.PaintEventArgs e)
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{
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if (this.TabCount > 0)
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{
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Rectangle borderRect = this.TabPages[0].Bounds;
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//borderRect.Inflate(1, 1);
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Rectangle rect = new Rectangle(borderRect.X - 2, borderRect.Y - 1, borderRect.Width + 5, borderRect.Height + 2);
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ControlPaint.DrawBorder(e.Graphics, rect, this.BorderColor, ButtonBorderStyle.Solid);
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}
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}
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/// <summary>
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/// Paints the selected tab.
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/// </summary>
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/// <param name="e">The <see cref="System.Windows.Forms.PaintEventArgs" /> instance containing the event data.</param>
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private void PaintTheSelectedTab(System.Windows.Forms.PaintEventArgs e)
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{
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if (this.SelectedIndex == -1)
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return;
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Rectangle selrect;
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int selrectRight = 0;
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selrect = this.GetTabRect(this.SelectedIndex);
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selrectRight = selrect.Right;
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e.Graphics.DrawLine(new Pen(_headSelectedBackColor), selrect.Left, selrect.Bottom + 1, selrectRight, selrect.Bottom + 1);
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}
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/// <summary>
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/// Gets the tab path.
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/// </summary>
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/// <param name="index">The index.</param>
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/// <returns>GraphicsPath.</returns>
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private GraphicsPath GetTabPath(int index)
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{
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System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
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path.Reset();
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Rectangle rect = this.GetTabRect(index);
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switch (Alignment)
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{
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case TabAlignment.Top:
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break;
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case TabAlignment.Bottom:
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break;
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case TabAlignment.Left:
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break;
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case TabAlignment.Right:
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break;
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}
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path.AddLine(rect.Left, rect.Top, rect.Left, rect.Bottom + 1);
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path.AddLine(rect.Left, rect.Top, rect.Right, rect.Top);
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path.AddLine(rect.Right, rect.Top, rect.Right, rect.Bottom + 1);
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path.AddLine(rect.Right, rect.Bottom + 1, rect.Left, rect.Bottom + 1);
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return path;
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}
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/// <summary>
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/// Sends the message.
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/// </summary>
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/// <param name="hWnd">The h WND.</param>
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/// <param name="Msg">The MSG.</param>
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/// <param name="wParam">The w parameter.</param>
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/// <param name="lParam">The l parameter.</param>
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/// <returns>IntPtr.</returns>
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[DllImport("user32.dll")]
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private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
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/// <summary>
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/// The wm setfont
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/// </summary>
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private const int WM_SETFONT = 0x30;
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/// <summary>
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/// The wm fontchange
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/// </summary>
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private const int WM_FONTCHANGE = 0x1d;
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/// <summary>
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/// 引发 <see cref="M:System.Windows.Forms.Control.CreateControl" /> 方法。
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/// </summary>
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protected override void OnCreateControl()
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{
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base.OnCreateControl();
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this.OnFontChanged(EventArgs.Empty);
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}
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/// <summary>
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/// 引发 <see cref="E:System.Windows.Forms.Control.FontChanged" /> 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.EventArgs" />。</param>
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protected override void OnFontChanged(EventArgs e)
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{
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base.OnFontChanged(e);
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IntPtr hFont = this.Font.ToHfont();
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SendMessage(this.Handle, WM_SETFONT, hFont, (IntPtr)(-1));
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SendMessage(this.Handle, WM_FONTCHANGE, IntPtr.Zero, IntPtr.Zero);
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this.UpdateStyles();
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}
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/// <summary>
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/// 此成员重写 <see cref="M:System.Windows.Forms.Control.WndProc(System.Windows.Forms.Message@)" />。
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/// </summary>
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/// <param name="m">一个 Windows 消息对象。</param>
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0x0201) // WM_LBUTTONDOWN
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{
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if (!DesignMode)
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{
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if (IsShowCloseBtn)
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{
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var mouseLocation = this.PointToClient(Control.MousePosition);
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int index = GetMouseDownTabHead(mouseLocation);
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if (index >= 0)
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{
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Rectangle rect = this.GetTabRect(index);
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var closeRect = new Rectangle(rect.Right - 15, rect.Top + 5, 10, 10);
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if (closeRect.Contains(mouseLocation))
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{
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this.TabPages.RemoveAt(index);
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return;
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}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
base.WndProc(ref m);
|
||
}
|
||
/// <summary>
|
||
/// 在调度键盘或输入消息之前，在消息循环内对它们进行预处理。
|
||
/// </summary>
|
||
/// <param name="msg">通过引用传递的 <see cref="T:System.Windows.Forms.Message" />，它表示要处理的消息。可能的值有 WM_KEYDOWN、WM_SYSKEYDOWN、WM_CHAR 和 WM_SYSCHAR。</param>
|
||
/// <returns>如果消息已由控件处理，则为 true；否则为 false。</returns>
|
||
/// <PermissionSet>
|
||
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
|
||
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
|
||
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
|
||
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
|
||
/// </PermissionSet>
|
||
public override bool PreProcessMessage(ref Message msg)
|
||
{
|
||
|
||
return base.PreProcessMessage(ref msg);
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the mouse down tab head.
|
||
/// </summary>
|
||
/// <param name="point">The point.</param>
|
||
/// <returns>System.Int32.</returns>
|
||
private int GetMouseDownTabHead(Point point)
|
||
{
|
||
for (int i = 0; i < this.TabCount; i++)
|
||
{
|
||
Rectangle rect = this.GetTabRect(i);
|
||
if (rect.Contains(point))
|
||
{
|
||
return i;
|
||
}
|
||
}
|
||
return -1;
|
||
}
|
||
}
|
||
}
|
