programs/regedit/childwnd.c

   1 /*
   2  * Regedit child window
   3  *
   4  * Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN     /* Exclude rarely-used stuff from Windows headers */
  22 #include <windows.h>
  23 #include <tchar.h>
  24 #include <commctrl.h>
  25 #include <assert.h>
  26 #define ASSERT assert
  27
  28 #include "main.h"
  29
  30
  31 /*******************************************************************************
  32  * Local module support methods
  33  */
  34
  35 static void MakeFullRegPath(HWND hwndTV, HTREEITEM hItem, LPTSTR keyPath, int* pPathLen, int max)
  36 {
  37     TVITEM item;
  38     item.mask = TVIF_PARAM;
  39     item.hItem = hItem;
  40     if (TreeView_GetItem(hwndTV, &item)) {
  41         if (item.hItem != TreeView_GetRoot(hwndTV)) {
  42             /* recurse */
  43             MakeFullRegPath(hwndTV, TreeView_GetParent(hwndTV, hItem), keyPath, pPathLen, max);
  44             keyPath[*pPathLen] = _T('\\');
  45             ++(*pPathLen);
  46         }
  47         item.mask = TVIF_TEXT;
  48         item.hItem = hItem;
  49         item.pszText = &keyPath[*pPathLen];
  50         item.cchTextMax = max - *pPathLen;
  51         if (TreeView_GetItem(hwndTV, &item)) {
  52             *pPathLen += _tcslen(item.pszText);
  53         }
  54     }
  55 }
  56
  57 static void draw_splitbar(HWND hWnd, int x)
  58 {
  59         RECT rt;
  60         HDC hdc = GetDC(hWnd);
  61
  62         GetClientRect(hWnd, &rt);
  63         rt.left = x - SPLIT_WIDTH/2;
  64         rt.right = x + SPLIT_WIDTH/2+1;
  65         InvertRect(hdc, &rt);
  66         ReleaseDC(hWnd, hdc);
  67 }
  68
  69 static void ResizeWnd(ChildWnd* pChildWnd, int cx, int cy)
  70 {
  71         HDWP hdwp = BeginDeferWindowPos(2);
  72         RECT rt = {0, 0, cx, cy};
  73
  74         cx = pChildWnd->nSplitPos + SPLIT_WIDTH/2;
  75     DeferWindowPos(hdwp, pChildWnd->hTreeWnd, 0, rt.left, rt.top, pChildWnd->nSplitPos-SPLIT_WIDTH/2-rt.left, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  76     DeferWindowPos(hdwp, pChildWnd->hListWnd, 0, rt.left+cx  , rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  77         EndDeferWindowPos(hdwp);
  78 }
  79
  80 static void OnPaint(HWND hWnd)
  81 {
  82     PAINTSTRUCT ps;
  83     RECT rt;
  84     HDC hdc;
  85
  86     GetClientRect(hWnd, &rt);
  87     hdc = BeginPaint(hWnd, &ps);
  88     FillRect(ps.hdc, &rt, GetStockObject(LTGRAY_BRUSH));
  89     EndPaint(hWnd, &ps);
  90 }
  91
  92 /*******************************************************************************
  93  *
  94  *  FUNCTION: _CmdWndProc(HWND, unsigned, WORD, LONG)
  95  *
  96  *  PURPOSE:  Processes WM_COMMAND messages for the main frame window.
  97  *
  98  */
  99
 100 static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 101 {
 102         switch (LOWORD(wParam)) {
 103     /* Parse the menu selections: */
 104     case ID_REGISTRY_EXIT:
 105         DestroyWindow(hWnd);
 106         break;
 107     case ID_VIEW_REFRESH:
 108         /* TODO */
 109         break;
 110     default:
 111         return FALSE;
 112     }
 113         return TRUE;
 114 }
 115
 116 /*******************************************************************************
 117  *
 118  *  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
 119  *
 120  *  PURPOSE:  Processes messages for the child windows.
 121  *
 122  *  WM_COMMAND  - process the application menu
 123  *  WM_PAINT    - Paint the main window
 124  *  WM_DESTROY  - post a quit message and return
 125  *
 126  */
 127 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 128 {
 129     static int last_split;
 130 /*    ChildWnd* pChildWnd = (ChildWnd*)GetWindowLong(hWnd, GWL_USERDATA); */
 131     static ChildWnd* pChildWnd;
 132
 133     switch (message) {
 134     case WM_CREATE:
 135         pChildWnd = (ChildWnd*)((LPCREATESTRUCT)lParam)->lpCreateParams;
 136         ASSERT(pChildWnd);
 137         pChildWnd->nSplitPos = 250;
 138         pChildWnd->hTreeWnd = CreateTreeView(hWnd, pChildWnd->szPath, TREE_WINDOW);
 139         pChildWnd->hListWnd = CreateListView(hWnd, LIST_WINDOW/*, pChildWnd->szPath*/);
 140         break;
 141     case WM_COMMAND:
 142         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 143             goto def;
 144         }
 145                 break;
 146     case WM_PAINT:
 147         OnPaint(hWnd);
 148         return 0;
 149         case WM_SETCURSOR:
 150                 if (LOWORD(lParam) == HTCLIENT) {
 151                         POINT pt;
 152                         GetCursorPos(&pt);
 153                         ScreenToClient(hWnd, &pt);
 154                         if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 155                                 SetCursor(LoadCursor(0, IDC_SIZEWE));
 156                                 return TRUE;
 157                         }
 158                 }
 159                 goto def;
 160     case WM_DESTROY:
 161         PostQuitMessage(0);
 162         break;
 163         case WM_LBUTTONDOWN: {
 164                 RECT rt;
 165                 int x = LOWORD(lParam);
 166                 GetClientRect(hWnd, &rt);
 167                 if (x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 168                         last_split = pChildWnd->nSplitPos;
 169                         draw_splitbar(hWnd, last_split);
 170                         SetCapture(hWnd);
 171                 }
 172                 break;}
 173
 174         case WM_LBUTTONUP:
 175                 if (GetCapture() == hWnd) {
 176                         RECT rt;
 177                         int x = LOWORD(lParam);
 178                         draw_splitbar(hWnd, last_split);
 179                         last_split = -1;
 180                         GetClientRect(hWnd, &rt);
 181                         pChildWnd->nSplitPos = x;
 182                         ResizeWnd(pChildWnd, rt.right, rt.bottom);
 183                         ReleaseCapture();
 184                 }
 185                 break;
 186
 187         case WM_CAPTURECHANGED:
 188                 if (GetCapture()==hWnd && last_split>=0)
 189                         draw_splitbar(hWnd, last_split);
 190                 break;
 191
 192     case WM_KEYDOWN:
 193                 if (wParam == VK_ESCAPE)
 194                         if (GetCapture() == hWnd) {
 195                                 RECT rt;
 196                                 draw_splitbar(hWnd, last_split);
 197                                 GetClientRect(hWnd, &rt);
 198                 ResizeWnd(pChildWnd, rt.right, rt.bottom);
 199                                 last_split = -1;
 200                                 ReleaseCapture();
 201                                 SetCursor(LoadCursor(0, IDC_ARROW));
 202                         }
 203                 break;
 204
 205         case WM_MOUSEMOVE:
 206                 if (GetCapture() == hWnd) {
 207                         RECT rt;
 208                         int x = LOWORD(lParam);
 209                         HDC hdc = GetDC(hWnd);
 210                         GetClientRect(hWnd, &rt);
 211                         rt.left = last_split-SPLIT_WIDTH/2;
 212                         rt.right = last_split+SPLIT_WIDTH/2+1;
 213                         InvertRect(hdc, &rt);
 214                         last_split = x;
 215                         rt.left = x-SPLIT_WIDTH/2;
 216                         rt.right = x+SPLIT_WIDTH/2+1;
 217                         InvertRect(hdc, &rt);
 218                         ReleaseDC(hWnd, hdc);
 219                 }
 220                 break;
 221
 222         case WM_SETFOCUS:
 223         if (pChildWnd != NULL) {
 224                     SetFocus(pChildWnd->nFocusPanel? pChildWnd->hListWnd: pChildWnd->hTreeWnd);
 225         }
 226                 break;
 227
 228     case WM_TIMER:
 229         break;
 230
 231         case WM_NOTIFY:
 232         if ((int)wParam == TREE_WINDOW) {
 233             switch (((LPNMHDR)lParam)->code) {
 234             case TVN_ITEMEXPANDING:
 235                 return !OnTreeExpanding(pChildWnd->hTreeWnd, (NMTREEVIEW*)lParam);
 236             case TVN_SELCHANGED:
 237                 {
 238                     HKEY hKey;
 239                     TCHAR keyPath[1000];
 240                     int keyPathLen = 0;
 241                     keyPath[0] = _T('\0');
 242                     hKey = FindRegRoot(pChildWnd->hTreeWnd, ((NMTREEVIEW*)lParam)->itemNew.hItem, keyPath, &keyPathLen, sizeof(keyPath)/sizeof(TCHAR));
 243                     RefreshListView(pChildWnd->hListWnd, hKey, keyPath);
 244
 245                     keyPathLen = 0;
 246                     keyPath[0] = _T('\0');
 247                     MakeFullRegPath(pChildWnd->hTreeWnd, ((NMTREEVIEW*)lParam)->itemNew.hItem, keyPath, &keyPathLen, sizeof(keyPath)/sizeof(TCHAR));
 248                     SendMessage(hStatusBar, SB_SETTEXT, 0, (LPARAM)keyPath);
 249                 }
 250                 break;
 251             default:
 252                 goto def;
 253             }
 254         } else
 255         if ((int)wParam == LIST_WINDOW) {
 256             if (!SendMessage(pChildWnd->hListWnd, message, wParam, lParam)) {
 257                 goto def;
 258             }
 259         }
 260         break;
 261
 262         case WM_SIZE:
 263         if (wParam != SIZE_MINIMIZED && pChildWnd != NULL) {
 264                 ResizeWnd(pChildWnd, LOWORD(lParam), HIWORD(lParam));
 265         }
 266         /* fall through */
 267     default: def:
 268         return DefWindowProc(hWnd, message, wParam, lParam);
 269    }
 270    return 0;
 271 }