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DockPane.SplitterControl.cs
资源名称：WeifenLuo.WinFormsUI.Docking.rar　[点击查看]
上传用户：szlfmled
上传日期：2020-11-22
资源大小：978k
文件大小：5k
源码类别：

C#编程

开发平台：

C#

DockPane.SplitterControl.cs：源码内容
  1. using System;
  2. using System.Collections;
  3. using System.ComponentModel;
  4. using System.Drawing;
  5. using System.Windows.Forms;
  7. namespace WeifenLuo.WinFormsUI.Docking
  8. {
  9.     partial class DockPane
  10.     {
  11.         private class SplitterControl : Control, ISplitterDragSource
  12.         {
  13.             DockPane m_pane;
  15.             public SplitterControl(DockPane pane)
  16.             {
  17.                 SetStyle(ControlStyles.Selectable, false);
  18.                 m_pane = pane;
  19.             }
  21.             public DockPane DockPane
  22.             {
  23.                 get { return m_pane; }
  24.             }
  26.             private DockAlignment m_alignment;
  27.             public DockAlignment Alignment
  28.             {
  29.                 get { return m_alignment; }
  30.                 set
  31.                 {
  32.                     m_alignment = value;
  33.                     if (m_alignment == DockAlignment.Left || m_alignment == DockAlignment.Right)
  34.                         Cursor = Cursors.VSplit;
  35.                     else if (m_alignment == DockAlignment.Top || m_alignment == DockAlignment.Bottom)
  36.                         Cursor = Cursors.HSplit;
  37.                     else
  38.                         Cursor = Cursors.Default;
  40.                     if (DockPane.DockState == DockState.Document)
  41.                         Invalidate();
  42.                 }
  43.             }
  45.             protected override void OnPaint(PaintEventArgs e)
  46.             {
  47.                 base.OnPaint(e);
  49.                 if (DockPane.DockState != DockState.Document)
  50.                     return;
  52.                 Graphics g = e.Graphics;
  53.                 Rectangle rect = ClientRectangle;
  54.                 if (Alignment == DockAlignment.Top || Alignment == DockAlignment.Bottom)
  55.                     g.DrawLine(SystemPens.ControlDark, rect.Left, rect.Bottom - 1, rect.Right, rect.Bottom - 1);
  56.                 else if (Alignment == DockAlignment.Left || Alignment == DockAlignment.Right)
  57.                     g.DrawLine(SystemPens.ControlDarkDark, rect.Right - 1, rect.Top, rect.Right - 1, rect.Bottom);
  58.             }
  60.             protected override void OnMouseDown(MouseEventArgs e)
  61.             {
  62.                 base.OnMouseDown(e);
  64.                 if (e.Button != MouseButtons.Left)
  65.                     return;
  67.                 DockPane.DockPanel.BeginDrag(this, Parent.RectangleToScreen(Bounds));
  68.             }
  70.             #region ISplitterDragSource Members
  72.             void ISplitterDragSource.BeginDrag(Rectangle rectSplitter)
  73.             {
  74.             }
  76.             void ISplitterDragSource.EndDrag()
  77.             {
  78.             }
  80.             bool ISplitterDragSource.IsVertical
  81.             {
  82.                 get
  83.                 {
  84.                     NestedDockingStatus status = DockPane.NestedDockingStatus;
  85.                     return (status.DisplayingAlignment == DockAlignment.Left ||
  86.                         status.DisplayingAlignment == DockAlignment.Right);
  87.                 }
  88.             }
  90.             Rectangle ISplitterDragSource.DragLimitBounds
  91.             {
  92.                 get
  93.                 {
  94.                     NestedDockingStatus status = DockPane.NestedDockingStatus;
  95.                     Rectangle rectLimit = Parent.RectangleToScreen(status.LogicalBounds);
  96.                     if (((ISplitterDragSource)this).IsVertical)
  97.                     {
  98.                         rectLimit.X += MeasurePane.MinSize;
  99.                         rectLimit.Width -= 2 * MeasurePane.MinSize;
  100.                     }
  101.                     else
  102.                     {
  103.                         rectLimit.Y += MeasurePane.MinSize;
  104.                         rectLimit.Height -= 2 * MeasurePane.MinSize;
  105.                     }
  107.                     return rectLimit;
  108.                 }
  109.             }
  111.             void ISplitterDragSource.MoveSplitter(int offset)
  112.             {
  113.                 NestedDockingStatus status = DockPane.NestedDockingStatus;
  114.                 double proportion = status.Proportion;
  115.                 if (status.LogicalBounds.Width <= 0 || status.LogicalBounds.Height <= 0)
  116.                     return;
  117.                 else if (status.DisplayingAlignment == DockAlignment.Left)
  118.                     proportion += ((double)offset) / (double)status.LogicalBounds.Width;
  119.                 else if (status.DisplayingAlignment == DockAlignment.Right)
  120.                     proportion -= ((double)offset) / (double)status.LogicalBounds.Width;
  121.                 else if (status.DisplayingAlignment == DockAlignment.Top)
  122.                     proportion += ((double)offset) / (double)status.LogicalBounds.Height;
  123.                 else
  124.                     proportion -= ((double)offset) / (double)status.LogicalBounds.Height;
  126.                 DockPane.SetNestedDockingProportion(proportion);
  127.             }
  129.             #region IDragSource Members
  131.             Control IDragSource.DragControl
  132.             {
  133.                 get { return this; }
  134.             }
  136.             #endregion
  138.             #endregion
  139.         }
  141.         private SplitterControl m_splitter;
  142.         private SplitterControl Splitter
  143.         {
  144.             get { return m_splitter; }
  145.         }
  147.         internal Rectangle SplitterBounds
  148.         {
  149.             set { Splitter.Bounds = value; }
  150.         }
  152.         internal DockAlignment SplitterAlignment
  153.         {
  154.             set { Splitter.Alignment = value; }
  155.         }
  156.     }
  157. }