982 lines
32 KiB
C#
982 lines
32 KiB
C#
/******************************************************************************
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* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
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* CopyRight (C) 2012-2020 ShenYongHua(沈永华).
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* QQ群：56829229 QQ：17612584 EMail：SunnyUI@qq.com
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*
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* Blog: https://www.cnblogs.com/yhuse
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* Gitee: https://gitee.com/yhuse/SunnyUI
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* GitHub: https://github.com/yhuse/SunnyUI
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*
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* SunnyUI.dll can be used for free under the GPL-3.0 license.
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* If you use this code, please keep this note.
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* 如果您使用此代码，请保留此说明。
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******************************************************************************
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* 文件名称: UITabControl.cs
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* 文件说明: 标签控件
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* 当前版本: V2.2
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* 创建日期: 2020-01-01
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*
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* 2020-01-01: V2.2.0 增加文件说明
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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.Drawing;
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using System.Drawing.Drawing2D;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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public sealed class UITabControl : TabControl, IStyleInterface
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{
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private readonly UITabControlHelper Helper;
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public UITabControl()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.DoubleBuffer, true);
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ItemSize = new Size(150, 40);
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DrawMode = TabDrawMode.OwnerDrawFixed;
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Font = UIFontColor.Font;
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AfterSetFillColor(FillColor);
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Size = new Size(450, 270);
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Version = UIGlobal.Version;
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Helper = new UITabControlHelper(this);
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}
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protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
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{
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if (ForbidCtrlTab)
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{
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switch (keyData)
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{
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case (Keys.Tab | Keys.Control):
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//组合键在调试时，不容易捕获；可以先按住Ctrl键（此时在断点处已经捕获），然后按下Tab键，都释放后，再进入断点处单步向下执行；
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//此时会分两次进入断点，第一次（好像）是处理Ctrl键，第二次处理组合键
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return true;
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}
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}
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return base.ProcessCmdKey(ref msg, keyData);
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}
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[DefaultValue(true)]
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public bool ForbidCtrlTab { get; set; } = true;
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public void SelectPage(int pageIndex)
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{
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Helper.SelectPage(pageIndex);
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}
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public void SelectPage(Guid pageGuid)
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{
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Helper.SelectPage(pageGuid);
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}
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public void AddPage(UIPage page)
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{
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Helper.AddPage(page);
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}
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public void AddPage(int pageIndex, UITabControl page)
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{
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Helper.AddPage(pageIndex, page);
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}
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public void AddPage(int pageIndex, UITabControlMenu page)
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{
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Helper.AddPage(pageIndex, page);
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}
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public void AddPage(Guid guid, UITabControl page)
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{
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Helper.AddPage(guid, page);
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}
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public void AddPage(Guid guid, UITabControlMenu page)
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{
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Helper.AddPage(guid, page);
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}
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public string Version { get; }
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private Color _fillColor = UIColor.LightBlue;
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private Color tabBackColor = Color.FromArgb(56, 56, 56);
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[DefaultValue(null)]
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public string TagString { get; set; }
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[DefaultValue(false)]
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public bool StyleCustomMode { get; set; }
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private HorizontalAlignment textAlignment = HorizontalAlignment.Center;
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[DefaultValue(HorizontalAlignment.Center)]
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public HorizontalAlignment TextAlignment
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{
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get => textAlignment;
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set
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{
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textAlignment = value;
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Invalidate();
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}
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}
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private bool tabVisible = true;
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[DefaultValue(true)]
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public bool TabVisible
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{
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get => tabVisible;
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set
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{
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tabVisible = value;
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if (!tabVisible)
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{
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ItemSize = new Size(0, 1);
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}
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else
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{
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if (ItemSize == new Size(0, 1))
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{
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ItemSize = new Size(150, 40);
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}
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}
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Invalidate();
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}
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}
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/// <summary>
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/// 当使用边框时填充颜色，当值为背景色或透明色或空值则不填充
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/// </summary>
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[Description("当使用边框时填充颜色，当值为背景色或透明色或空值则不填充"), Category("自定义")]
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[DefaultValue(typeof(Color), "235, 243, 255")]
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public Color FillColor
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{
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get => _fillColor;
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set
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{
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_fillColor = value;
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AfterSetFillColor(value);
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("边框颜色"), Category("自定义")]
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[DefaultValue(typeof(Color), "56, 56, 56")]
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public Color TabBackColor
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{
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get => tabBackColor;
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set
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{
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tabBackColor = value;
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_menuStyle = UIMenuStyle.Custom;
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Invalidate();
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}
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}
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private Color tabSelectedColor = Color.FromArgb(36, 36, 36);
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("选中Tab页背景色"), Category("自定义")]
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[DefaultValue(typeof(Color), "36, 36, 36")]
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public Color TabSelectedColor
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{
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get => tabSelectedColor;
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set
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{
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tabSelectedColor = value;
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_menuStyle = UIMenuStyle.Custom;
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Invalidate();
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}
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}
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private Color tabSelectedForeColor = UIColor.Blue;
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("选中Tab页字体色"), Category("自定义")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color TabSelectedForeColor
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{
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get => tabSelectedForeColor;
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set
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{
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tabSelectedForeColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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private Color tabUnSelectedForeColor = Color.FromArgb(240, 240, 240);
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("未选中Tab页字体色"), Category("自定义")]
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[DefaultValue(typeof(Color), "240, 240, 240")]
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public Color TabUnSelectedForeColor
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{
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get => tabUnSelectedForeColor;
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set
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{
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tabUnSelectedForeColor = value;
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_menuStyle = UIMenuStyle.Custom;
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Invalidate();
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}
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}
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private Color tabSelectedHighColor = UIColor.Blue;
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("选中Tab页高亮"), Category("自定义")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color TabSelectedHighColor
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{
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get => tabSelectedHighColor;
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set
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{
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tabSelectedHighColor = value;
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_style = UIStyle.Custom;
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Invalidate();
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}
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}
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private UIStyle _style = UIStyle.Blue;
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[DefaultValue(UIStyle.Blue)]
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public UIStyle Style
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{
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get => _style;
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set => SetStyle(value);
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}
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public override Rectangle DisplayRectangle
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{
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get
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{
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Rectangle rect = base.DisplayRectangle;
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if (tabVisible)
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{
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return new Rectangle(rect.Left - 4, rect.Top - 4, rect.Width + 8, rect.Height + 8);
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}
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else
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{
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return new Rectangle(rect.Left - 4, rect.Top - 5, rect.Width + 8, rect.Height + 9);
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}
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}
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}
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private void AfterSetFillColor(Color color)
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{
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foreach (TabPage page in TabPages)
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{
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page.BackColor = color;
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}
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}
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public void SetStyle(UIStyle style)
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{
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SetStyleColor(UIStyles.GetStyleColor(style));
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_style = style;
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}
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public void SetStyleColor(UIBaseStyle uiColor)
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{
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if (uiColor.IsCustom()) return;
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tabSelectedForeColor = tabSelectedHighColor = uiColor.MenuSelectedColor;
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_fillColor = uiColor.PlainColor;
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Invalidate();
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}
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private UIMenuStyle _menuStyle = UIMenuStyle.Black;
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[DefaultValue(UIMenuStyle.Black)]
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public UIMenuStyle MenuStyle
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{
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get => _menuStyle;
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set
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{
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if (value != UIMenuStyle.Custom)
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{
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SetMenuStyle(UIStyles.MenuColors[value]);
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}
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_menuStyle = value;
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}
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}
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private void SetMenuStyle(UIMenuColor uiColor)
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{
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tabBackColor = uiColor.BackColor;
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tabSelectedColor = uiColor.SelectedColor;
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tabUnSelectedForeColor = uiColor.UnSelectedForeColor;
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Invalidate();
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}
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protected override void CreateHandle()
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{
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base.CreateHandle();
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DoubleBuffered = true;
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SizeMode = TabSizeMode.Fixed;
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Appearance = TabAppearance.Normal;
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Alignment = TabAlignment.Top;
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}
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private bool showCloseButton;
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[DefaultValue(false)]
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public bool ShowCloseButton
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{
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get => showCloseButton;
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set
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{
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showCloseButton = value;
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Invalidate();
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}
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}
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private bool showActiveCloseButton;
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[DefaultValue(false)]
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[Browsable(false)]
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public bool ShowActiveCloseButton
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{
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get => showActiveCloseButton;
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set
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{
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showActiveCloseButton = value;
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Invalidate();
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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// 绘制背景色
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e.Graphics.Clear(TabBackColor);
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if (!TabVisible)
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{
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return;
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}
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for (int index = 0; index <= TabCount - 1; index++)
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{
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Rectangle TabRect = new Rectangle(GetTabRect(index).Location.X - 2, GetTabRect(index).Location.Y - 2, ItemSize.Width, ItemSize.Height);
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Bitmap bmp = new Bitmap(TabRect.Width, TabRect.Height);
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Graphics g = Graphics.FromImage(bmp);
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SizeF sf = e.Graphics.MeasureString(TabPages[index].Text, Font);
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int textLeft = ImageList?.ImageSize.Width ?? 0;
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if (ImageList != null) textLeft += 4 + 4 + 6;
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if (TextAlignment == HorizontalAlignment.Right)
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textLeft = (int)(TabRect.Width - 4 - sf.Width);
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if (TextAlignment == HorizontalAlignment.Center)
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textLeft = textLeft + (int)((TabRect.Width - textLeft - sf.Width) / 2.0f);
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// 绘制标题
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g.Clear(TabBackColor);
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if (index == SelectedIndex)
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{
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g.Clear(TabSelectedColor);
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g.FillRectangle(TabSelectedHighColor, 0, bmp.Height - 4, bmp.Width, 4);
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}
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g.DrawString(TabPages[index].Text, Font, index == SelectedIndex ? tabSelectedForeColor : TabUnSelectedForeColor, textLeft, TabRect.Top + 2 + (TabRect.Height - sf.Height) / 2.0f);
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if (ShowCloseButton || (ShowActiveCloseButton && index == SelectedIndex))
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{
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g.DrawFontImage(61453, 20, index == SelectedIndex ? tabSelectedForeColor : TabUnSelectedForeColor, new Rectangle(TabRect.Width - 28, TabRect.Top, 24, TabRect.Height));
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}
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// 绘制图标
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if (ImageList != null)
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{
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int imageIndex = TabPages[index].ImageIndex;
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if (imageIndex >= 0 && imageIndex < ImageList.Images.Count)
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{
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g.DrawImage(ImageList.Images[imageIndex], 4 + 6, TabRect.Y + (TabRect.Height - ImageList.ImageSize.Height) / 2.0f, ImageList.ImageSize.Width, ImageList.ImageSize.Height);
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}
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}
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if (RightToLeftLayout && RightToLeft == RightToLeft.Yes)
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{
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bmp = bmp.HorizontalFlip();
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}
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e.Graphics.DrawImage(bmp, TabRect.Left, TabRect.Top);
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bmp.Dispose();
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}
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}
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protected override void OnMouseClick(MouseEventArgs e)
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{
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base.OnMouseClick(e);
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int removeIndex = -1;
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for (int index = 0; index <= TabCount - 1; index++)
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{
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Rectangle TabRect = new Rectangle(GetTabRect(index).Location.X - 2, GetTabRect(index).Location.Y - 2, ItemSize.Width, ItemSize.Height);
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Rectangle rect = new Rectangle(TabRect.Right - 28, TabRect.Top, 24, TabRect.Height);
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if (e.Location.InRect(rect))
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{
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removeIndex = index;
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break;
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}
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}
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if (removeIndex < 0 || removeIndex >= TabCount)
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{
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return;
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}
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if (ShowCloseButton || (ShowActiveCloseButton && removeIndex == SelectedIndex))
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{
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if (BeforeRemoveTabPage == null || (BeforeRemoveTabPage != null && BeforeRemoveTabPage.Invoke(this, removeIndex)))
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{
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RemoveTabPage(removeIndex);
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}
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}
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}
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public delegate bool OnBeforeRemoveTabPage(object sender, int index);
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public delegate void OnAfterRemoveTabPage(object sender, int index);
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public event OnBeforeRemoveTabPage BeforeRemoveTabPage;
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public event OnAfterRemoveTabPage AfterRemoveTabPage;
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internal void RemoveTabPage(int index)
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{
|
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if (index < 0 || index >= TabCount)
|
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{
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return;
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}
|
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|
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TabPages.Remove(TabPages[index]);
|
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AfterRemoveTabPage?.Invoke(this, index);
|
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|
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if (TabCount == 0) return;
|
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if (index == 0) SelectedIndex = 0;
|
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if (index > 0) SelectedIndex = index - 1;
|
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}
|
||
|
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public enum UITabPosition
|
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{
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Left,
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Right
|
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}
|
||
|
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[DefaultValue(UITabPosition.Left)]
|
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public UITabPosition TabPosition
|
||
{
|
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get => (RightToLeftLayout && RightToLeft == RightToLeft.Yes)
|
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? UITabPosition.Right
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: UITabPosition.Left;
|
||
set
|
||
{
|
||
RightToLeftLayout = value == UITabPosition.Right;
|
||
RightToLeft = (value == UITabPosition.Right) ? RightToLeft.Yes : RightToLeft.No;
|
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}
|
||
}
|
||
|
||
protected override void OnSelectedIndexChanged(EventArgs e)
|
||
{
|
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base.OnSelectedIndexChanged(e);
|
||
Init(SelectedIndex);
|
||
}
|
||
|
||
public void Init(int index = 0)
|
||
{
|
||
if (index < 0 || index >= TabPages.Count)
|
||
{
|
||
return;
|
||
}
|
||
|
||
if (SelectedIndex != index)
|
||
SelectedIndex = index;
|
||
|
||
List<UIPage> pages = TabPages[SelectedIndex].GetControls<UIPage>();
|
||
foreach (var page in pages)
|
||
{
|
||
page.Init();
|
||
}
|
||
|
||
List<UITabControlMenu> leftTabControls = TabPages[SelectedIndex].GetControls<UITabControlMenu>();
|
||
foreach (var tabControl in leftTabControls)
|
||
{
|
||
tabControl.Init();
|
||
}
|
||
|
||
List<UITabControl> topTabControls = TabPages[SelectedIndex].GetControls<UITabControl>();
|
||
foreach (var tabControl in topTabControls)
|
||
{
|
||
tabControl.Init();
|
||
}
|
||
}
|
||
|
||
internal IntPtr UpDownButtonHandle => FindUpDownButton();
|
||
|
||
private IntPtr FindUpDownButton()
|
||
{
|
||
return NativeMethods.FindWindowEx(Handle, IntPtr.Zero, UpDownButtonClassName, null);
|
||
}
|
||
|
||
public void OnPaintUpDownButton(UpDownButtonPaintEventArgs e)
|
||
{
|
||
Graphics g = e.Graphics;
|
||
Rectangle rect = e.ClipRectangle;
|
||
|
||
Color upButtonBaseColor = tabBackColor;
|
||
Color upButtonBorderColor = tabBackColor;
|
||
Color upButtonArrowColor = tabUnSelectedForeColor;
|
||
|
||
Color downButtonBaseColor = tabBackColor;
|
||
Color downButtonBorderColor = tabBackColor;
|
||
Color downButtonArrowColor = tabUnSelectedForeColor;
|
||
|
||
Rectangle upButtonRect = rect;
|
||
upButtonRect.X = 0;
|
||
upButtonRect.Y = 0;
|
||
upButtonRect.Width = rect.Width / 2 - 1;
|
||
upButtonRect.Height -= 1;
|
||
|
||
Rectangle downButtonRect = rect;
|
||
downButtonRect.X = upButtonRect.Right + 1;
|
||
downButtonRect.Y = 0;
|
||
downButtonRect.Width = rect.Width / 2 - 1;
|
||
downButtonRect.Height -= 1;
|
||
g.Clear(tabBackColor);
|
||
|
||
if (Enabled)
|
||
{
|
||
if (e.MouseOver)
|
||
{
|
||
if (e.MousePress)
|
||
{
|
||
//鼠标按下
|
||
if (e.MouseInUpButton)
|
||
{
|
||
upButtonArrowColor = GetColor(tabBackColor, 0, -35, -24, -9);
|
||
}
|
||
else
|
||
{
|
||
downButtonArrowColor = GetColor(tabBackColor, 0, -35, -24, -9);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
//鼠标移动
|
||
if (e.MouseInUpButton)
|
||
{
|
||
upButtonArrowColor = GetColor(tabBackColor, 0, 35, 24, 9);
|
||
}
|
||
else
|
||
{
|
||
downButtonArrowColor = GetColor(tabBackColor, 0, 35, 24, 9);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
upButtonBaseColor = SystemColors.Control;
|
||
upButtonBorderColor = SystemColors.ControlDark;
|
||
upButtonArrowColor = SystemColors.ControlDark;
|
||
|
||
downButtonBaseColor = SystemColors.Control;
|
||
downButtonBorderColor = SystemColors.ControlDark;
|
||
downButtonArrowColor = SystemColors.ControlDark;
|
||
}
|
||
|
||
g.SmoothingMode = SmoothingMode.AntiAlias;
|
||
|
||
//Color color = Enabled ? BackColor : SystemColors.Control;
|
||
//rect.Inflate(1, 1);
|
||
//g.FillRectangle(color, rect);
|
||
|
||
|
||
RenderButton(g, upButtonRect, upButtonBaseColor, upButtonBorderColor, upButtonArrowColor, ArrowDirection.Left);
|
||
RenderButton(g, downButtonRect, downButtonBaseColor, downButtonBorderColor, downButtonArrowColor, ArrowDirection.Right);
|
||
|
||
UpDownButtonPaintEventHandler handler = Events[EventPaintUpDownButton] as UpDownButtonPaintEventHandler;
|
||
handler?.Invoke(this, e);
|
||
}
|
||
|
||
internal void RenderButton(Graphics g, Rectangle rect, Color baseColor, Color borderColor, Color arrowColor, ArrowDirection direction)
|
||
{
|
||
//RenderBackgroundInternal(g, rect, baseColor, borderColor, 0.45f, true, LinearGradientMode.Vertical);
|
||
switch (direction)
|
||
{
|
||
case ArrowDirection.Left:
|
||
g.DrawFontImage(61700, (int)(30 * this.ItemSize.Height / 40), arrowColor, rect);
|
||
break;
|
||
|
||
case ArrowDirection.Right:
|
||
g.DrawFontImage(61701, (int)(30 * this.ItemSize.Height / 40), arrowColor, rect, 1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
private Color GetColor(Color colorBase, int a, int r, int g, int b)
|
||
{
|
||
int a0 = colorBase.A;
|
||
int r0 = colorBase.R;
|
||
int g0 = colorBase.G;
|
||
int b0 = colorBase.B;
|
||
|
||
if (a + a0 > 255) { a = 255; } else { a = Math.Max(a + a0, 0); }
|
||
if (r + r0 > 255) { r = 255; } else { r = Math.Max(r + r0, 0); }
|
||
if (g + g0 > 255) { g = 255; } else { g = Math.Max(g + g0, 0); }
|
||
if (b + b0 > 255) { b = 255; } else { b = Math.Max(b + b0, 0); }
|
||
|
||
return Color.FromArgb(a, r, g, b);
|
||
}
|
||
|
||
internal void RenderBackgroundInternal(Graphics g, Rectangle rect, Color baseColor, Color borderColor, float basePosition, bool drawBorder, LinearGradientMode mode)
|
||
{
|
||
using (LinearGradientBrush brush = new LinearGradientBrush(rect, Color.Transparent, Color.Transparent, mode))
|
||
{
|
||
Color[] colors = new Color[4];
|
||
colors[0] = GetColor(baseColor, 0, 35, 24, 9);
|
||
colors[1] = GetColor(baseColor, 0, 13, 8, 3);
|
||
colors[2] = baseColor;
|
||
colors[3] = GetColor(baseColor, 0, 68, 69, 54);
|
||
|
||
ColorBlend blend = new ColorBlend();
|
||
blend.Positions = new[] { 0.0f, basePosition, basePosition + 0.05f, 1.0f };
|
||
blend.Colors = colors;
|
||
brush.InterpolationColors = blend;
|
||
g.FillRectangle(brush, rect);
|
||
}
|
||
if (baseColor.A > 80)
|
||
{
|
||
Rectangle rectTop = rect;
|
||
if (mode == LinearGradientMode.Vertical)
|
||
{
|
||
rectTop.Height = (int)(rectTop.Height * basePosition);
|
||
}
|
||
else
|
||
{
|
||
rectTop.Width = (int)(rect.Width * basePosition);
|
||
}
|
||
using (SolidBrush brushAlpha = new SolidBrush(Color.FromArgb(80, 255, 255, 255)))
|
||
{
|
||
g.FillRectangle(brushAlpha, rectTop);
|
||
}
|
||
}
|
||
|
||
if (drawBorder)
|
||
{
|
||
using (Pen pen = new Pen(borderColor))
|
||
{
|
||
g.DrawRectangle(pen, rect);
|
||
}
|
||
}
|
||
}
|
||
|
||
private static readonly object EventPaintUpDownButton = new object();
|
||
private const string UpDownButtonClassName = "msctls_updown32";
|
||
private UpDownButtonNativeWindow _upDownButtonNativeWindow;
|
||
|
||
protected override void OnHandleCreated(EventArgs e)
|
||
{
|
||
base.OnHandleCreated(e);
|
||
if (UpDownButtonHandle != IntPtr.Zero)
|
||
{
|
||
if (_upDownButtonNativeWindow == null)
|
||
{
|
||
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
|
||
}
|
||
}
|
||
}
|
||
|
||
protected override void OnCreateControl()
|
||
{
|
||
base.OnCreateControl();
|
||
|
||
if (UpDownButtonHandle != IntPtr.Zero)
|
||
{
|
||
if (_upDownButtonNativeWindow == null)
|
||
{
|
||
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
|
||
}
|
||
}
|
||
}
|
||
|
||
protected override void OnHandleDestroyed(EventArgs e)
|
||
{
|
||
base.OnHandleDestroyed(e);
|
||
if (_upDownButtonNativeWindow != null)
|
||
{
|
||
_upDownButtonNativeWindow.Dispose();
|
||
_upDownButtonNativeWindow = null;
|
||
}
|
||
}
|
||
|
||
protected override void OnControlAdded(ControlEventArgs e)
|
||
{
|
||
base.OnControlAdded(e);
|
||
|
||
if (UpDownButtonHandle != IntPtr.Zero)
|
||
{
|
||
if (_upDownButtonNativeWindow == null)
|
||
{
|
||
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
|
||
}
|
||
}
|
||
|
||
if (e.Control is TabPage)
|
||
{
|
||
e.Control.Padding = new Padding(0);
|
||
}
|
||
}
|
||
|
||
protected override void OnSizeChanged(EventArgs e)
|
||
{
|
||
base.OnSizeChanged(e);
|
||
if (UpDownButtonHandle != IntPtr.Zero)
|
||
{
|
||
if (_upDownButtonNativeWindow == null)
|
||
{
|
||
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
|
||
}
|
||
}
|
||
}
|
||
|
||
private class UpDownButtonNativeWindow : NativeWindow, IDisposable
|
||
{
|
||
private UITabControl _owner;
|
||
private bool _bPainting;
|
||
private NativeMethods.RECT rect = new NativeMethods.RECT();
|
||
private Point UpDownButtonLocation;
|
||
private Rectangle clipRect = new Rectangle();
|
||
|
||
public UpDownButtonNativeWindow(UITabControl owner)
|
||
{
|
||
_owner = owner;
|
||
AssignHandle(owner.UpDownButtonHandle);
|
||
|
||
}
|
||
|
||
private bool LeftKeyPressed()
|
||
{
|
||
if (SystemInformation.MouseButtonsSwapped)
|
||
{
|
||
return (NativeMethods.GetKeyState(NativeMethods.VK_RBUTTON) < 0);
|
||
}
|
||
else
|
||
{
|
||
return (NativeMethods.GetKeyState(NativeMethods.VK_LBUTTON) < 0);
|
||
}
|
||
}
|
||
|
||
private void DrawUpDownButton()
|
||
{
|
||
bool mousePress = LeftKeyPressed();
|
||
Point cursorPoint = new Point();
|
||
NativeMethods.GetCursorPos(ref cursorPoint);
|
||
NativeMethods.GetWindowRect(Handle, ref rect);
|
||
var mouseOver = NativeMethods.PtInRect(ref rect, cursorPoint);
|
||
cursorPoint.X -= rect.Left;
|
||
cursorPoint.Y -= rect.Top;
|
||
var mouseInUpButton = cursorPoint.X < clipRect.Width / 2;
|
||
using (Graphics g = Graphics.FromHwnd(Handle))
|
||
{
|
||
UpDownButtonPaintEventArgs e = new UpDownButtonPaintEventArgs(g, clipRect, mouseOver, mousePress, mouseInUpButton);
|
||
_owner.OnPaintUpDownButton(e);
|
||
}
|
||
}
|
||
|
||
protected override void WndProc(ref Message m)
|
||
{
|
||
switch (m.Msg)
|
||
{
|
||
case NativeMethods.WM_PAINT:
|
||
if (!_bPainting)
|
||
{
|
||
UpDownButtonLocation.X = (int)(_owner.Size.Width - _owner.ItemSize.Height * 1.5);
|
||
UpDownButtonLocation.Y = 0;
|
||
Size UpDownButtonSize = new Size((int)(_owner.ItemSize.Height * 1.5), _owner.ItemSize.Height);
|
||
clipRect = new Rectangle(UpDownButtonLocation, UpDownButtonSize);
|
||
NativeMethods.MoveWindow(Handle, UpDownButtonLocation.X, UpDownButtonLocation.Y, clipRect.Width, clipRect.Height);
|
||
|
||
NativeMethods.PAINTSTRUCT ps = new NativeMethods.PAINTSTRUCT();
|
||
_bPainting = true;
|
||
NativeMethods.BeginPaint(m.HWnd, ref ps);
|
||
DrawUpDownButton();
|
||
NativeMethods.EndPaint(m.HWnd, ref ps);
|
||
_bPainting = false;
|
||
m.Result = NativeMethods.TRUE;
|
||
}
|
||
else
|
||
{
|
||
base.WndProc(ref m);
|
||
}
|
||
break;
|
||
default:
|
||
base.WndProc(ref m);
|
||
break;
|
||
}
|
||
}
|
||
|
||
#region IDisposable 成员
|
||
|
||
public void Dispose()
|
||
{
|
||
_owner = null;
|
||
base.ReleaseHandle();
|
||
}
|
||
|
||
#endregion IDisposable 成员
|
||
}
|
||
|
||
internal class NativeMethods
|
||
{
|
||
public const int WM_PAINT = 0xF;
|
||
|
||
public const int VK_LBUTTON = 0x1;
|
||
public const int VK_RBUTTON = 0x2;
|
||
|
||
private const int TCM_FIRST = 0x1300;
|
||
public const int TCM_GETITEMRECT = (TCM_FIRST + 10);
|
||
|
||
public static readonly IntPtr TRUE = new IntPtr(1);
|
||
|
||
[StructLayout(LayoutKind.Sequential)]
|
||
public struct PAINTSTRUCT
|
||
{
|
||
internal IntPtr hdc;
|
||
internal int fErase;
|
||
internal RECT rcPaint;
|
||
internal int fRestore;
|
||
internal int fIncUpdate;
|
||
internal int Reserved1;
|
||
internal int Reserved2;
|
||
internal int Reserved3;
|
||
internal int Reserved4;
|
||
internal int Reserved5;
|
||
internal int Reserved6;
|
||
internal int Reserved7;
|
||
internal int Reserved8;
|
||
}
|
||
|
||
[StructLayout(LayoutKind.Sequential)]
|
||
public struct RECT
|
||
{
|
||
internal RECT(int X, int Y, int Width, int Height)
|
||
{
|
||
this.Left = X;
|
||
this.Top = Y;
|
||
this.Right = Width;
|
||
this.Bottom = Height;
|
||
}
|
||
|
||
internal int Left;
|
||
internal int Top;
|
||
internal int Right;
|
||
internal int Bottom;
|
||
}
|
||
|
||
[DllImport("user32.dll")]
|
||
public static extern IntPtr FindWindowEx(
|
||
IntPtr hwndParent,
|
||
IntPtr hwndChildAfter,
|
||
string lpszClass,
|
||
string lpszWindow);
|
||
|
||
[DllImport("user32.dll")]
|
||
public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
|
||
|
||
[DllImport("user32.dll")]
|
||
public static extern short GetKeyState(int nVirtKey);
|
||
|
||
[DllImport("user32.dll")]
|
||
public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, int wParam, ref RECT lParam);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool GetCursorPos(ref Point lpPoint);
|
||
|
||
[DllImport("user32.dll")]
|
||
public extern static int OffsetRect(ref RECT lpRect, int x, int y);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool PtInRect([In] ref RECT lprc, Point pt);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool GetClientRect(IntPtr hWnd, ref RECT r);
|
||
|
||
[DllImport("user32.dll")]
|
||
[return: MarshalAs(UnmanagedType.Bool)]
|
||
public static extern bool MoveWindow(IntPtr hWnd, int x, int y, int nWidth, int nHeight, bool bRepaint = true);
|
||
|
||
[DllImport("User32.dll", CharSet = CharSet.Auto)]
|
||
public static extern bool IsWindowVisible(IntPtr hwnd);
|
||
}
|
||
|
||
public delegate void UpDownButtonPaintEventHandler(object sender, UpDownButtonPaintEventArgs e);
|
||
|
||
public class UpDownButtonPaintEventArgs : PaintEventArgs
|
||
{
|
||
private bool _mouseOver;
|
||
private bool _mousePress;
|
||
private bool _mouseInUpButton;
|
||
|
||
public UpDownButtonPaintEventArgs(
|
||
Graphics graphics,
|
||
Rectangle clipRect,
|
||
bool mouseOver,
|
||
bool mousePress,
|
||
bool mouseInUpButton)
|
||
: base(graphics, clipRect)
|
||
{
|
||
_mouseOver = mouseOver;
|
||
_mousePress = mousePress;
|
||
_mouseInUpButton = mouseInUpButton;
|
||
}
|
||
|
||
public bool MouseOver
|
||
{
|
||
get { return _mouseOver; }
|
||
}
|
||
|
||
public bool MousePress
|
||
{
|
||
get { return _mousePress; }
|
||
}
|
||
|
||
public bool MouseInUpButton
|
||
{
|
||
get { return _mouseInUpButton; }
|
||
}
|
||
}
|
||
}
|
||
} |