Code/Tools/LuaRemoteDebugger/Aga.Controls/Tree/Input/ReorderColumnState.cs

   1 // Copyright 2001-2019 Crytek GmbH / Crytek Group. All rights reserved.
   2
   3 using System;
   4 using System.Collections.Generic;
   5 using System.Text;
   6 using System.Drawing;
   7 using System.Windows.Forms;
   8
   9 namespace Aga.Controls.Tree
  10 {
  11         internal class ReorderColumnState : ColumnState
  12         {
  13                 #region Properties
  14
  15                 private Point _location;
  16                 public Point Location
  17                 {
  18                         get { return _location; }
  19                 }
  20
  21                 private Bitmap _ghostImage;
  22                 public Bitmap GhostImage
  23                 {
  24                         get { return _ghostImage; }
  25                 }
  26
  27                 private TreeColumn _dropColumn;
  28                 public TreeColumn DropColumn
  29                 {
  30                         get { return _dropColumn; }
  31                 }
  32
  33                 private int _dragOffset;
  34                 public int DragOffset
  35                 {
  36                         get { return _dragOffset; }
  37                 }
  38
  39                 #endregion
  40
  41                 public ReorderColumnState(TreeViewAdv tree, TreeColumn column, Point initialMouseLocation)
  42                         : base(tree, column)
  43                 {
  44                         _location = new Point(initialMouseLocation.X + Tree.OffsetX, 0);
  45                         _dragOffset = tree.GetColumnX(column) - initialMouseLocation.X;
  46                         _ghostImage = column.CreateGhostImage(new Rectangle(0, 0, column.Width, tree.ColumnHeaderHeight), tree.Font);
  47                 }
  48
  49                 public override void KeyDown(KeyEventArgs args)
  50                 {
  51                         args.Handled = true;
  52                         if (args.KeyCode == Keys.Escape)
  53                                 FinishResize();
  54                 }
  55
  56                 public override void MouseDown(TreeNodeAdvMouseEventArgs args)
  57                 {
  58                 }
  59
  60                 public override void MouseUp(TreeNodeAdvMouseEventArgs args)
  61                 {
  62                         FinishResize();
  63                 }
  64
  65                 public override bool MouseMove(MouseEventArgs args)
  66                 {
  67                         _dropColumn = null;
  68                         _location = new Point(args.X + Tree.OffsetX, 0);
  69                         int x = 0;
  70                         foreach (TreeColumn c in Tree.Columns)
  71                         {
  72                                 if (c.IsVisible)
  73                                 {
  74                                         if (_location.X < x + c.Width / 2)
  75                                         {
  76                                                 _dropColumn = c;
  77                                                 break;
  78                                         }
  79                                         x += c.Width;
  80                                 }
  81                         }
  82                         Tree.UpdateHeaders();
  83                         return true;
  84                 }
  85
  86                 private void FinishResize()
  87                 {
  88                         Tree.ChangeInput();
  89                         if (Column == DropColumn)
  90                                 Tree.UpdateView();
  91                         else
  92                         {
  93                                 Tree.Columns.Remove(Column);
  94                                 if (DropColumn == null)
  95                                         Tree.Columns.Add(Column);
  96                                 else
  97                                         Tree.Columns.Insert(Tree.Columns.IndexOf(DropColumn), Column);
  98
  99                                 Tree.OnColumnReordered(Column);
 100                         }
 101                 }
 102         }
 103 }