533 lines
17 KiB
C#
533 lines
17 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) 2012-2021 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: UISplitContainer.cs
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* 文件说明: 分割容器
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* 当前版本: V3.0
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* 创建日期: 2021-10-30
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*
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* 2021-10-30: V3.0.8 增加文件说明
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******************************************************************************/
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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public class UISplitContainer : SplitContainer
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{
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private enum UIMouseType
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{
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None,
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Button,
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Split
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}
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private enum UISplitPanelState
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{
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Collapsed = 0,
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Expanded = 1,
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}
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private enum UIControlState
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{
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/// <summary>
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/// 正常。
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/// </summary>
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Normal,
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/// <summary>
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/// 鼠标进入。
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/// </summary>
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Hover,
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}
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public enum UICollapsePanel
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{
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None = 0,
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Panel1 = 1,
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Panel2 = 2,
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}
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private UICollapsePanel _collapsePanel = UICollapsePanel.Panel1;
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private UISplitPanelState _splitPanelState = UISplitPanelState.Expanded;
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private UIControlState _uiControlState;
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private int _lastDistance;
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private int _minSize;
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private UIMouseType _uiMouseType;
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private readonly object EventCollapseClick = new object();
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public UISplitContainer()
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{
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SetStyle(ControlStyles.UserPaint |
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ControlStyles.AllPaintingInWmPaint |
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ControlStyles.OptimizedDoubleBuffer, true);
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_lastDistance = SplitterDistance;
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SplitterWidth = 10;
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}
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private Color barColor = Color.FromArgb(56, 56, 56);
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[DefaultValue(typeof(Color), "56, 56, 56"), Category("SunnyUI")]
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[Description("分割栏背景色")]
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public Color BarColor
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{
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get => barColor;
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set
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{
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barColor = value;
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Invalidate();
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}
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}
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private Color handleColor = Color.FromArgb(106, 106, 106);
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[DefaultValue(typeof(Color), "106, 106, 106"), Category("SunnyUI")]
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[Description("分割栏按钮背景色")]
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public Color HandleColor
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{
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get => handleColor;
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set
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{
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handleColor = value;
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Invalidate();
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}
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}
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private Color handleHoverColor = Color.FromArgb(186, 186, 186);
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[DefaultValue(typeof(Color), "186, 186, 186"), Category("SunnyUI")]
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[Description("分割栏按钮鼠标移上背景色")]
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public Color HandleHoverColor
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{
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get => handleHoverColor;
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set
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{
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handleHoverColor = value;
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Invalidate();
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}
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}
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private Color arrowColor = Color.FromArgb(80, 160, 255);
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[DefaultValue(typeof(Color), "80, 160, 255"), Category("SunnyUI")]
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[Description("分割栏按钮箭头背景色")]
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public Color ArrowColor
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{
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get => arrowColor;
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set
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{
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arrowColor = value;
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Invalidate();
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}
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}
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public event EventHandler CollapseClick
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{
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add => Events.AddHandler(EventCollapseClick, value);
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remove => Events.RemoveHandler(EventCollapseClick, value);
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}
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[DefaultValue(UICollapsePanel.Panel1), Category("SunnyUI")]
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[Description("点击后收起的Panel")]
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public UICollapsePanel CollapsePanel
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{
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get => _collapsePanel;
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set
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{
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if (_collapsePanel != value)
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{
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Expand();
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_collapsePanel = value;
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Invalidate();
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}
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}
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}
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protected virtual int DefaultCollapseWidth => 80;
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protected virtual int DefaultArrowWidth => 24;
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private Rectangle CollapseRect
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{
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get
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{
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if (_collapsePanel == UICollapsePanel.None)
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{
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return Rectangle.Empty;
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}
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Rectangle rect = SplitterRectangle;
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if (Orientation == Orientation.Horizontal)
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{
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rect.X = (Width - DefaultCollapseWidth) / 2;
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rect.Width = DefaultCollapseWidth;
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}
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else
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{
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rect.Y = (Height - DefaultCollapseWidth) / 2;
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rect.Height = DefaultCollapseWidth;
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}
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return rect;
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}
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}
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private UISplitPanelState SplitPanelState
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{
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get => _splitPanelState;
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set
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{
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if (_splitPanelState != value)
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{
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switch (value)
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{
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case UISplitPanelState.Expanded:
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Expand();
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break;
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case UISplitPanelState.Collapsed:
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Collapse();
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break;
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}
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_splitPanelState = value;
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}
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}
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}
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private UIControlState ControlState
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{
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set
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{
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if (_uiControlState != value)
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{
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_uiControlState = value;
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Invalidate(CollapseRect);
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}
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}
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}
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public void Collapse()
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{
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if (_collapsePanel != UICollapsePanel.None && SplitPanelState == UISplitPanelState.Expanded)
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{
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_lastDistance = SplitterDistance;
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if (_collapsePanel == UICollapsePanel.Panel1)
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{
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_minSize = Panel1MinSize;
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Panel1MinSize = 0;
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SplitterDistance = 0;
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}
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else
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{
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int width = Orientation == Orientation.Horizontal ?
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Height : Width;
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_minSize = Panel2MinSize;
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Panel2MinSize = 0;
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SplitterDistance = width - SplitterWidth - Padding.Vertical;
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}
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Invalidate(SplitterRectangle);
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}
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}
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public void Expand()
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{
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if (_collapsePanel != UICollapsePanel.None &&
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SplitPanelState == UISplitPanelState.Collapsed)
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{
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if (_collapsePanel == UICollapsePanel.Panel1)
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{
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Panel1MinSize = _minSize;
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}
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else
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{
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Panel2MinSize = _minSize;
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}
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SplitterDistance = _lastDistance;
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Invalidate(SplitterRectangle);
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}
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}
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protected virtual void OnCollapseClick(EventArgs e)
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{
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SplitPanelState = SplitPanelState == UISplitPanelState.Collapsed ?
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UISplitPanelState.Expanded : UISplitPanelState.Collapsed;
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EventHandler handler = Events[EventCollapseClick] as EventHandler;
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handler?.Invoke(this, e);
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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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if (Panel1Collapsed || Panel2Collapsed)
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{
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return;
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}
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Rectangle rect = SplitterRectangle;
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bool bHorizontal = Orientation == Orientation.Horizontal;
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e.Graphics.FillRectangle(BarColor, rect);
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if (_collapsePanel == UICollapsePanel.None)
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{
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return;
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}
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if (SplitterWidth < 11) SplitterWidth = 11;
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Rectangle arrowRect = CalcArrowRect(CollapseRect);
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Color handleRectColor = _uiControlState == UIControlState.Hover ? handleHoverColor : HandleColor;
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Point[] points = GetHandlePoints();
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using (Brush br = new SolidBrush(handleRectColor))
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{
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e.Graphics.SetHighQuality();
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e.Graphics.FillPolygon(br, points);
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e.Graphics.SetDefaultQuality();
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}
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switch (_collapsePanel)
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{
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case UICollapsePanel.Panel1:
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if (bHorizontal)
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{
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e.Graphics.DrawFontImage(SplitPanelState == UISplitPanelState.Collapsed ? 61703 : 61702,
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22, arrowColor, arrowRect);
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}
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else
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{
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e.Graphics.DrawFontImage(SplitPanelState == UISplitPanelState.Collapsed ? 61701 : 61700,
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22, arrowColor, arrowRect);
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}
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break;
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case UICollapsePanel.Panel2:
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if (bHorizontal)
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{
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e.Graphics.DrawFontImage(SplitPanelState == UISplitPanelState.Collapsed ? 61702 : 61703,
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22, arrowColor, arrowRect);
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}
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else
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{
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e.Graphics.DrawFontImage(SplitPanelState == UISplitPanelState.Collapsed ? 61700 : 61701,
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22, arrowColor, arrowRect);
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}
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break;
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}
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}
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protected Point[] GetHandlePoints()
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{
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bool bCollapsed = SplitPanelState == UISplitPanelState.Collapsed;
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if (Orientation == Orientation.Horizontal)
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{
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if ((CollapsePanel == UICollapsePanel.Panel1 && !bCollapsed) ||
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(CollapsePanel == UICollapsePanel.Panel2 && bCollapsed))
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{
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return new[]
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{
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new Point(CollapseRect.Left + 2, CollapseRect.Top),
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new Point(CollapseRect.Right - 2, CollapseRect.Top),
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new Point(CollapseRect.Right, CollapseRect.Bottom),
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new Point(CollapseRect.Left, CollapseRect.Bottom),
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new Point(CollapseRect.Left + 2, CollapseRect.Top)
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};
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}
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if ((CollapsePanel == UICollapsePanel.Panel1 && bCollapsed) ||
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(CollapsePanel == UICollapsePanel.Panel2 && !bCollapsed))
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{
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return new[]
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{
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new Point(CollapseRect.Left, CollapseRect.Top),
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new Point(CollapseRect.Right, CollapseRect.Top),
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new Point(CollapseRect.Right - 2, CollapseRect.Bottom),
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new Point(CollapseRect.Left + 2, CollapseRect.Bottom),
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new Point(CollapseRect.Left, CollapseRect.Top)
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};
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}
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}
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if (Orientation == Orientation.Vertical)
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{
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if ((CollapsePanel == UICollapsePanel.Panel1 && !bCollapsed) ||
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(CollapsePanel == UICollapsePanel.Panel2 && bCollapsed))
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{
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return new[]
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{
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new Point(CollapseRect.Left, CollapseRect.Top + 2),
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new Point(CollapseRect.Right, CollapseRect.Top),
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new Point(CollapseRect.Right, CollapseRect.Bottom),
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new Point(CollapseRect.Left, CollapseRect.Bottom - 2),
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new Point(CollapseRect.Left, CollapseRect.Top + 2)
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};
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}
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if ((CollapsePanel == UICollapsePanel.Panel1 && bCollapsed) ||
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(CollapsePanel == UICollapsePanel.Panel2 && !bCollapsed))
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{
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return new[]
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{
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new Point(CollapseRect.Left,CollapseRect.Top),
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new Point(CollapseRect.Right,CollapseRect.Top+2),
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new Point(CollapseRect.Right,CollapseRect.Bottom-2),
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new Point(CollapseRect.Left,CollapseRect.Bottom),
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new Point(CollapseRect.Left,CollapseRect.Top)
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};
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}
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}
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return new Point[0];
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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//如果鼠标的左键没有按下，重置鼠标状态
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if (e.Button != MouseButtons.Left)
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{
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_uiMouseType = UIMouseType.None;
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}
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Rectangle collapseRect = CollapseRect;
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Point mousePoint = e.Location;
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//鼠标在Button矩形里，并且不是在拖动
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if (collapseRect.Contains(mousePoint) && _uiMouseType != UIMouseType.Split)
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{
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Capture = false;
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SetCursor(Cursors.Hand);
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ControlState = UIControlState.Hover;
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return;
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}
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//鼠标在分隔栏矩形里
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if (SplitterRectangle.Contains(mousePoint))
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{
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ControlState = UIControlState.Normal;
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//如果已经在按钮按下了鼠标或者已经收缩，就不允许拖动了
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if (_uiMouseType == UIMouseType.Button ||
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(_collapsePanel != UICollapsePanel.None && SplitPanelState == UISplitPanelState.Collapsed))
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{
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Capture = false;
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base.Cursor = Cursors.Default;
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return;
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}
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//鼠标没有按下，设置Split光标
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if (_uiMouseType == UIMouseType.None && !IsSplitterFixed)
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{
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SetCursor(Orientation == Orientation.Horizontal ? Cursors.HSplit : Cursors.VSplit);
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return;
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}
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}
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ControlState = UIControlState.Normal;
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//正在拖动分隔栏
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if (_uiMouseType == UIMouseType.Split && !IsSplitterFixed)
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{
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SetCursor(Orientation == Orientation.Horizontal ? Cursors.HSplit : Cursors.VSplit);
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base.OnMouseMove(e);
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return;
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}
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base.Cursor = Cursors.Default;
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base.OnMouseMove(e);
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}
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protected override void OnMouseLeave(EventArgs e)
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{
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base.Cursor = Cursors.Default;
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ControlState = UIControlState.Normal;
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base.OnMouseLeave(e);
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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Rectangle collapseRect = CollapseRect;
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Point mousePoint = e.Location;
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if (collapseRect.Contains(mousePoint) ||
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(_collapsePanel != UICollapsePanel.None &&
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SplitPanelState == UISplitPanelState.Collapsed))
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{
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_uiMouseType = UIMouseType.Button;
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return;
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}
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if (SplitterRectangle.Contains(mousePoint))
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{
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_uiMouseType = UIMouseType.Split;
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}
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base.OnMouseDown(e);
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}
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protected override void OnKeyUp(KeyEventArgs e)
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{
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base.OnKeyUp(e);
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Invalidate(SplitterRectangle);
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}
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protected override void OnMouseUp(MouseEventArgs e)
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{
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base.OnMouseUp(e);
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Invalidate(SplitterRectangle);
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Rectangle collapseRect = CollapseRect;
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Point mousePoint = e.Location;
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if (_uiMouseType == UIMouseType.Button && e.Button == MouseButtons.Left && collapseRect.Contains(mousePoint))
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{
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OnCollapseClick(EventArgs.Empty);
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}
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_uiMouseType = UIMouseType.None;
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}
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private void SetCursor(Cursor cursor)
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{
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if (base.Cursor != cursor)
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{
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base.Cursor = cursor;
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}
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}
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private Rectangle CalcArrowRect(Rectangle collapseRect)
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{
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if (Orientation == Orientation.Horizontal)
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{
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int width = (collapseRect.Width - DefaultArrowWidth) / 2;
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return new Rectangle(
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collapseRect.X + width,
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collapseRect.Y - 1,
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DefaultArrowWidth,
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collapseRect.Height);
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}
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else
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{
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int width = (collapseRect.Height - DefaultArrowWidth) / 2;
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return new Rectangle(
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collapseRect.X - 1,
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collapseRect.Y + width,
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collapseRect.Width,
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DefaultArrowWidth);
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}
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}
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}
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}
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