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         /// <summary>
 102         /// 複数選択時の起点になるアイテム (selection mark) の位置を取得・設定する
 103         /// </summary>
 104         /// <remarks>
 105         /// Items[idx].Selected の設定では mark が設定されるが、SelectedIndices.Add(idx) では設定されないため、
 106         /// 主に後者と合わせて使用する
 107         /// </remarks>
 108         public int SelectionMark
 109         {
 110             get { return Win32Api.ListView_GetSelectionMark(this.Handle); }
 111             set { Win32Api.ListView_SetSelectionMark(this.Handle, value); }
 112         }
 113
 114         public void ChangeItemBackColor(int index, Color backColor)
 115         {
 116             ChangeSubItemBackColor(index, 0, backColor);
 117         }
 118
 119         public void ChangeItemForeColor(int index, Color foreColor)
 120         {
 121             ChangeSubItemForeColor(index, 0, foreColor);
 122         }
 123
 124         public void ChangeItemFont(int index, Font fnt)
 125         {
 126             ChangeSubItemFont(index, 0, fnt);
 127         }
 128
 129         public void ChangeItemFontAndColor(int index, Color foreColor, Font fnt)
 130         {
 131             ChangeSubItemStyles(index, 0, BackColor, foreColor, fnt);
 132         }
 133
 134         public void ChangeItemStyles(int index, Color backColor, Color foreColor, Font fnt)
 135         {
 136             ChangeSubItemStyles(index, 0, backColor, foreColor, fnt);
 137         }
 138
 139         public void ChangeSubItemBackColor(int itemIndex, int subitemIndex, Color backColor)
 140         {
 141             var item = this.Items[itemIndex];
 142             item.SubItems[subitemIndex].BackColor = backColor;
 143             SetUpdateBounds(item, subitemIndex);
 144             this.Update();
 145             this.changeBounds = Rectangle.Empty;
 146         }
 147
 148         public void ChangeSubItemForeColor(int itemIndex, int subitemIndex, Color foreColor)
 149         {
 150             var item = this.Items[itemIndex];
 151             item.SubItems[subitemIndex].ForeColor = foreColor;
 152             SetUpdateBounds(item, subitemIndex);
 153             this.Update();
 154             this.changeBounds = Rectangle.Empty;
 155         }
 156
 157         public void ChangeSubItemFont(int itemIndex, int subitemIndex, Font fnt)
 158         {
 159             var item = this.Items[itemIndex];
 160             item.SubItems[subitemIndex].Font = fnt;
 161             SetUpdateBounds(item, subitemIndex);
 162             this.Update();
 163             this.changeBounds = Rectangle.Empty;
 164         }
 165
 166         public void ChangeSubItemFontAndColor(int itemIndex, int subitemIndex, Color foreColor, Font fnt)
 167         {
 168             var item = this.Items[itemIndex];
 169             var subItem = item.SubItems[subitemIndex];
 170             subItem.ForeColor = foreColor;
 171             subItem.Font = fnt;
 172             SetUpdateBounds(item, subitemIndex);
 173             this.Update();
 174             this.changeBounds = Rectangle.Empty;
 175         }
 176
 177         public void ChangeSubItemStyles(int itemIndex, int subitemIndex, Color backColor, Color foreColor, Font fnt)
 178         {
 179             var item = this.Items[itemIndex];
 180             var subItem = item.SubItems[subitemIndex];
 181             subItem.BackColor = backColor;
 182             subItem.ForeColor = foreColor;
 183             subItem.Font = fnt;
 184             SetUpdateBounds(item, subitemIndex);
 185             this.Update();
 186             this.changeBounds = Rectangle.Empty;
 187         }
 188
 189         private void SetUpdateBounds(ListViewItem item, int subItemIndex)
 190         {
 191             try
 192             {
 193                 if (subItemIndex > this.Columns.Count)
 194                 {
 195                     throw new ArgumentOutOfRangeException("subItemIndex");
 196                 }
 197                 if (item.UseItemStyleForSubItems)
 198                 {
 199                     this.changeBounds = item.Bounds;
 200                 }
 201                 else
 202                 {
 203                     this.changeBounds = this.GetSubItemBounds(item, subItemIndex);
 204                 }
 205             }
 206             catch (ArgumentException)
 207             {
 208                 //タイミングによりBoundsプロパティが取れない？
 209                 this.changeBounds = Rectangle.Empty;
 210             }
 211         }
 212
 213         private Rectangle GetSubItemBounds(ListViewItem item, int subitemIndex)
 214         {
 215             if (subitemIndex == 0 && this.Columns.Count > 0)
 216             {
 217                 Rectangle col0 = item.Bounds;
 218                 return new Rectangle(col0.Left, col0.Top, item.SubItems[1].Bounds.X + 1, col0.Height);
 219             }
 220             else
 221             {
 222                 return item.SubItems[subitemIndex].Bounds;
 223             }
 224         }
 225
 226         [StructLayout(LayoutKind.Sequential)]
 227         private struct SCROLLINFO
 228         {
 229             public int cbSize;
 230             public int fMask;
 231             public int nMin;
 232             public int nMax;
 233             public int nPage;
 234             public int nPos;
 235             public int nTrackPos;
 236         }
 237
 238         private enum ScrollBarDirection
 239         {
 240             SB_HORZ = 0,
 241             SB_VERT = 1,
 242             SB_CTL = 2,
 243             SB_BOTH = 3,
 244         }
 245
 246         private enum ScrollInfoMask
 247         {
 248             SIF_RANGE = 0x1,
 249             SIF_PAGE = 0x2,
 250             SIF_POS = 0x4,
 251             SIF_DISABLENOSCROLL = 0x8,
 252             SIF_TRACKPOS = 0x10,
 253             SIF_ALL = (SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS),
 254         }
 255
 256         [DllImport("user32.dll")]
 257         private static extern int GetScrollInfo(IntPtr hWnd, ScrollBarDirection fnBar, ref SCROLLINFO lpsi);
 258
 259         private SCROLLINFO si = new SCROLLINFO {
 260             cbSize = Marshal.SizeOf(new SCROLLINFO()),
 261             fMask = (int)ScrollInfoMask.SIF_POS
 262         };
 263
 264         [DebuggerStepThrough()]
 265         protected override void WndProc(ref Message m)
 266         {
 267             const int WM_ERASEBKGND = 0x14;
 268             const int WM_PAINT = 0xF;
 269             const int WM_MOUSEWHEEL = 0x20A;
 270             const int WM_MOUSEHWHEEL = 0x20E;
 271             const int WM_HSCROLL = 0x114;
 272             const int WM_VSCROLL = 0x115;
 273             const int WM_KEYDOWN = 0x100;
 274             const int WM_CONTEXTMENU = 0x7B;
 275             const int LVM_SETITEMCOUNT = 0x102F;
 276             const long LVSICF_NOSCROLL = 0x2;
 277             const long LVSICF_NOINVALIDATEALL = 0x1;
 278
 279             int hPos = -1;
 280             int vPos = -1;
 281
 282             switch (m.Msg)
 283             {
 284                 case WM_ERASEBKGND:
 285                     if (this.changeBounds != Rectangle.Empty)
 286                         m.Msg = 0;
 287                     break;
 288                 case WM_PAINT:
 289                     if (this.changeBounds != Rectangle.Empty)
 290                     {
 291                         Win32Api.ValidateRect(this.Handle, IntPtr.Zero);
 292                         this.Invalidate(this.changeBounds);
 293                         this.changeBounds = Rectangle.Empty;
 294                     }
 295                     break;
 296                 case WM_HSCROLL:
 297                     if (HScrolled != null)
 298                         HScrolled(this, EventArgs.Empty);
 299                     break;
 300                 case WM_VSCROLL:
 301                     if (VScrolled != null)
 302                         VScrolled(this, EventArgs.Empty);
 303                     break;
 304                 case WM_MOUSEWHEEL:
 305                 case WM_MOUSEHWHEEL:
 306                 case WM_KEYDOWN:
 307                     if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_VERT, ref si) != 0)
 308                         vPos = si.nPos;
 309                     if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_HORZ, ref si) != 0)
 310                         hPos = si.nPos;
 311                     break;
 312                 case WM_CONTEXTMENU:
 313                     if (m.WParam != this.Handle)
 314                     {
 315                         //カラムヘッダメニューを表示
 316                         if (this.ColumnHeaderContextMenuStrip != null)
 317                             this.ColumnHeaderContextMenuStrip.Show(new Point(m.LParam.ToInt32()));
 318                         return;
 319                     }
 320                     break;
 321                 case LVM_SETITEMCOUNT:
 322                     m.LParam = new IntPtr(LVSICF_NOSCROLL | LVSICF_NOINVALIDATEALL);
 323                     break;
 324             }
 325
 326             try
 327             {
 328                 base.WndProc(ref m);
 329             }
 330             catch (ArgumentOutOfRangeException)
 331             {
 332                 //Substringでlengthが0以下。アイコンサイズが影響？
 333             }
 334             catch (AccessViolationException)
 335             {
 336                 //WndProcのさらに先で発生する。
 337             }
 338             if (this.IsDisposed) return;
 339
 340             if (vPos != -1)
 341                 if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_VERT, ref si) != 0 && vPos != si.nPos)
 342                     if (VScrolled != null)
 343                         VScrolled(this, EventArgs.Empty);
 344             if (hPos != -1)
 345                 if (GetScrollInfo(this.Handle, ScrollBarDirection.SB_HORZ, ref si) != 0 && hPos != si.nPos)
 346                     if (HScrolled != null)
 347                         HScrolled(this, EventArgs.Empty);
 348         }
 349    }
 350 }