OpenTween/DetailsListView.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2007-2011 kiri_feather (@kiri_feather) <kiri.feather@gmail.com>
   3 //           (c) 2008-2011 Moz (@syo68k)
   4 //           (c) 2008-2011 takeshik (@takeshik) <http://www.takeshik.org/>
   5 //           (c) 2010-2011 anis774 (@anis774) <http://d.hatena.ne.jp/anis774/>
   6 //           (c) 2010-2011 fantasticswallow (@f_swallow) <http://twitter.com/f_swallow>
   7 //           (c) 2011      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   8 // All rights reserved.
   9 //
  10 // This file is part of OpenTween.
  11 //
  12 // This program is free software; you can redistribute it and/or modify it
  13 // under the terms of the GNU General Public License as published by the Free
  14 // Software Foundation; either version 3 of the License, or (at your option)
  15 // any later version.
  16 //
  17 // This program is distributed in the hope that it will be useful, but
  18 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  19 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  20 // for more details.
  21 //
  22 // You should have received a copy of the GNU General Public License along
  23 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  24 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  25 // Boston, MA 02110-1301, USA.
  26
  27 using System;
  28 using System.Collections.Generic;
  29 using System.Linq;
  30 using System.Text;
  31 using System.Windows.Forms;
  32 using System.Drawing;
  33 using System.ComponentModel;
  34 using System.Runtime.InteropServices;
  35 using System.Diagnostics;
  36
  37 namespace OpenTween.OpenTweenCustomControl
  38 {
  39     public sealed class DetailsListView : ListView
  40     {
  41         private Rectangle changeBounds;
  42         private EventHandlerList _handlers = new EventHandlerList();
  43
  44         public ContextMenuStrip ColumnHeaderContextMenuStrip { get; set; }
  45
  46         public event EventHandler VScrolled;
  47         public event EventHandler HScrolled;
  48
  49         public DetailsListView()
  50         {
  51             View = View.Details;
  52             FullRowSelect = true;
  53             HideSelection = false;
  54             DoubleBuffered = true;
  55         }
  56
  57         //[System.ComponentModel.DefaultValue(0),
  58         // System.ComponentModel.RefreshProperties(System.ComponentModel.RefreshProperties.Repaint)]
  59         //public new int VirtualListSize
  60         //{
  61         //    get { return base.VirtualListSize; }
  62         //    set
  63         //    {
  64         //        if (value == base.VirtualListSize) return;
  65         //        if (base.VirtualListSize > 0 && value > 0)
  66         //        {
  67         //            int topIndex = 0;
  68         //            if (!this.IsDisposed)
  69         //            {
  70         //                if (base.VirtualListSize < value)
  71         //                {
  72         //                    if (this.TopItem == null)
  73         //                    {
  74         //                        topIndex = 0;
  75         //                    }
  76         //                    else
  77         //                    {
  78         //                        topIndex = this.TopItem.Index;
  79         //                    }
  80         //                    topIndex = Math.Min(topIndex, Math.Abs(value - 1));
  81         //                    this.TopItem = this.Items[topIndex];
  82         //                }
  83         //                else
  84         //                {
  85         //                    if (this.TopItem == null)
  86         //                    {
  87         //                        topIndex = 0;
  88         //                    }
  89         //                    else
  90         //                    {
  91         //
  92         //                    }
  93         //                    this.TopItem = this.Items[0];
  94         //                }
  95         //            }
  96         //        }
  97         //        base.VirtualListSize = value;
  98         //    }
  99         //}
 100
 101         public void ChangeItemBackColor(int index, Color backColor)
 102         {
 103             ChangeSubItemBackColor(index, 0, backColor);
 104         }
 105
 106         public void ChangeItemForeColor(int index, Color foreColor)
 107         {
 108             ChangeSubItemForeColor(index, 0, foreColor);
 109         }
 110
 111         public void ChangeItemFont(int index, Font fnt)
 112         {
 113             ChangeSubItemFont(index, 0, fnt);
 114         }
 115
 116         public void ChangeItemFontAndColor(int index, Color foreColor, Font fnt)
 117         {
 118             ChangeSubItemStyles(index, 0, BackColor, foreColor, fnt);
 119         }
 120
 121         public void ChangeItemStyles(int index, Color backColor, Color foreColor, Font fnt)
 122         {
 123             ChangeSubItemStyles(index, 0, backColor, foreColor, fnt);
 124         }
 125
 126         public void ChangeSubItemBackColor(int itemIndex, int subitemIndex, Color backColor)
 127         {
 128             var item = this.Items[itemIndex];
 129             item.SubItems[subitemIndex].BackColor = backColor;
 130             SetUpdateBounds(item, subitemIndex);
 131             this.Update();
 132             this.changeBounds = Rectangle.Empty;
 133         }
 134
 135         public void ChangeSubItemForeColor(int itemIndex, int subitemIndex, Color foreColor)
 136         {
 137             var item = this.Items[itemIndex];
 138             item.SubItems[subitemIndex].ForeColor = foreColor;
 139             SetUpdateBounds(item, subitemIndex);
 140             this.Update();
 141             this.changeBounds = Rectangle.Empty;
 142         }
 143
 144         public void ChangeSubItemFont(int itemIndex, int subitemIndex, Font fnt)
 145         {
 146             var item = this.Items[itemIndex];
 147             item.SubItems[subitemIndex].Font = fnt;
 148             SetUpdateBounds(item, subitemIndex);
 149             this.Update();
 150             this.changeBounds = Rectangle.Empty;
 151         }
 152
 153         public void ChangeSubItemFontAndColor(int itemIndex, int subitemIndex, Color foreColor, Font fnt)
 154         {
 155             var item = this.Items[itemIndex];
 156             var subItem = item.SubItems[subitemIndex];
 157             subItem.ForeColor = foreColor;
 158             subItem.Font = fnt;
 159             SetUpdateBounds(item, subitemIndex);
 160             this.Update();
 161             this.changeBounds = Rectangle.Empty;
 162         }
 163
 164         public void ChangeSubItemStyles(int itemIndex, int subitemIndex, Color backColor, Color foreColor, Font fnt)
 165         {
 166             var item = this.Items[itemIndex];
 167             var subItem = item.SubItems[subitemIndex];
 168             subItem.BackColor = backColor;
 169             subItem.ForeColor = foreColor;
 170             subItem.Font = fnt;
 171             SetUpdateBounds(item, subitemIndex);
 172             this.Update();
 173             this.changeBounds = Rectangle.Empty;
 174         }
 175
 176         private void SetUpdateBounds(ListViewItem item, int subItemIndex)
 177         {
 178             try
 179             {
 180                 if (subItemIndex > this.Columns.Count)
 181                 {
 182                     throw new ArgumentOutOfRangeException("subItemIndex");
 183                 }
 184                 if (item.UseItemStyleForSubItems)
 185                 {
 186                     this.changeBounds = item.Bounds;
 187                 }
 188                 else
 189                 {
 190                     this.changeBounds = this.GetSubItemBounds(item, subItemIndex);
 191                 }
 192             }
 193             catch (ArgumentException)
 194             {
 195                 //タイミングによりBoundsプロパティが取れない？
 196                 this.changeBounds = Rectangle.Empty;
 197             }
 198         }
 199
 200         private Rectangle GetSubItemBounds(ListViewItem item, int subitemIndex)
 201         {
 202             if (subitemIndex == 0 && this.Columns.Count > 0)
 203             {
 204                 Rectangle col0 = item.Bounds;
 205                 return new Rectangle(col0.Left, col0.Top, item.SubItems[1].Bounds.X + 1, col0.Height);
 206             }
 207             else
 208             {
 209                 return item.SubItems[subitemIndex].Bounds;
 210             }
 211         }
 212
 213         [StructLayout(LayoutKind.Sequential)]
 214         private struct SCROLLINFO
 215         {
 216             public int cbSize;
 217             public int fMask;
 218             public int nMin;
 219             public int nMax;
 220             public int nPage;
 221             public int nPos;
 222             public int nTrackPos;
 223         }
 224
 225         private enum ScrollBarDirection
 226         {
 227             SB_HORZ = 0,
 228             SB_VERT = 1,
 229             SB_CTL = 2,
 230             SB_BOTH = 3,
 231         }
 232
 233         private enum ScrollInfoMask
 234         {
 235             SIF_RANGE = 0x1,
 236             SIF_PAGE = 0x2,
 237             SIF_POS = 0x4,
 238             SIF_DISABLENOSCROLL = 0x8,
 239             SIF_TRACKPOS = 0x10,
 240             SIF_ALL = (SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS),
 241         }
 242
 243         [DllImport("user32.dll")]
 244         private static extern int GetScrollInfo(IntPtr hWnd, ScrollBarDirection fnBar, ref SCROLLINFO lpsi);
 245
 246         private SCROLLINFO si = new SCROLLINFO {
 247             cbSize = Marshal.SizeOf(new SCROLLINFO()),
 248             fMask = (int)ScrollInfoMask.SIF_POS
 249         };
 250
 251         [DebuggerStepThrough()]
 252         protected override void WndProc(ref Message m)
 253         {
 254             const int WM_ERASEBKGND = 0x14;
 255             const int WM_PAINT = 0xF;
 256             const int WM_MOUSEWHEEL = 0x20A;
 257             const int WM_MOUSEHWHEEL = 0x20E;
 258             const int WM_HSCROLL = 0x114;
 259             const int WM_VSCROLL = 0x115;
 260             const int WM_KEYDOWN = 0x100;
 261             const int WM_CONTEXTMENU = 0x7B;
 262             const int LVM_SETITEMCOUNT = 0x102F;
 263             const long LVSICF_NOSCROLL = 0x2;
 264             const long LVSICF_NOINVALIDATEALL = 0x1;
 265
 266             int hPos = -1;
 267             int vPos = -1;
 268
 269             switch (m.Msg)
 270             {
 271                 case WM_ERASEBKGND:
 272                     if (this.changeBounds != Rectangle.Empty)
 273                         m.Msg = 0;
 274                     break;
 275                 case WM_PAINT:
 276                     if (this.changeBounds != Rectangle.Empty)
 277                     {
 278                         Win32Api.ValidateRect(this.Handle, IntPtr.Zero);
 279                         this.Invalidate(this.changeBounds);
 280                         this.changeBounds = Rectangle.Empty;
 281                     }
 282                     break;
 283                 case WM_HSCROLL:
 284                     if (HScrolled != null)
 285                         HScrolled(this, EventArgs.Empty);
 286                     break;
 287                 case WM_VSCROLL:
 288                     if (VScrolled != null)
 289                         VScrolled(this, EventArgs.Empty);
 290                     break;
 291                 case WM_MOUSEWHEEL:
 292                 case WM_MOUSEHWHEEL:
 293                 case WM_KEYDOWN:
 294                     if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_VERT, ref si) != 0)
 295                         vPos = si.nPos;
 296                     if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_HORZ, ref si) != 0)
 297                         hPos = si.nPos;
 298                     break;
 299                 case WM_CONTEXTMENU:
 300                     if (m.WParam != this.Handle)
 301                     {
 302                         //カラムヘッダメニューを表示
 303                         if (this.ColumnHeaderContextMenuStrip != null)
 304                             this.ColumnHeaderContextMenuStrip.Show(new Point(m.LParam.ToInt32()));
 305                         return;
 306                     }
 307                     break;
 308                 case LVM_SETITEMCOUNT:
 309                     m.LParam = new IntPtr(LVSICF_NOSCROLL | LVSICF_NOINVALIDATEALL);
 310                     break;
 311             }
 312
 313             try
 314             {
 315                 base.WndProc(ref m);
 316             }
 317             catch (ArgumentOutOfRangeException)
 318             {
 319                 //Substringでlengthが0以下。アイコンサイズが影響？
 320             }
 321             catch (AccessViolationException)
 322             {
 323                 //WndProcのさらに先で発生する。
 324             }
 325             if (this.IsDisposed) return;
 326
 327             if (vPos != -1)
 328                 if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_VERT, ref si) != 0 && vPos != si.nPos)
 329                     if (VScrolled != null)
 330                         VScrolled(this, EventArgs.Empty);
 331             if (hPos != -1)
 332                 if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_HORZ, ref si) != 0 && hPos != si.nPos)
 333                     if (HScrolled != null)
 334                         HScrolled(this, EventArgs.Empty);
 335         }
 336    }
 337 }