rosapps/templates/mdi/childwnd.c

   1 /*
   2  *  ReactOS Application MDI Child Window
   3  *
   4  *  childwnd.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifdef _MSC_VER
  24 #include "stdafx.h"
  25 #else
  26 #define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
  27 #include <windows.h>
  28 #include <commctrl.h>
  29 #include <stdlib.h>
  30 #include <malloc.h>
  31 #include <memory.h>
  32 #include <tchar.h>
  33 #include <process.h>
  34 #include <stdio.h>
  35 #endif
  36
  37 #include <assert.h>
  38 #define ASSERT assert
  39
  40 #include "main.h"
  41 #include "childwnd.h"
  42
  43 ////////////////////////////////////////////////////////////////////////////////
  44
  45 static void draw_splitbar(HWND hWnd, int x)
  46 {
  47         RECT rt;
  48         HDC hdc = GetDC(hWnd);
  49
  50         GetClientRect(hWnd, &rt);
  51         rt.left = x - SPLIT_WIDTH/2;
  52         rt.right = x + SPLIT_WIDTH/2+1;
  53         InvertRect(hdc, &rt);
  54         ReleaseDC(hWnd, hdc);
  55 }
  56
  57 static void OnPaint(HWND hWnd, ChildWnd* pChildWnd)
  58 {
  59     PAINTSTRUCT ps;
  60     RECT rt;
  61     GetClientRect(hWnd, &rt);
  62     BeginPaint(hWnd, &ps);
  63
  64 //    lastBrush = SelectObject(ps.hdc, (HBRUSH)GetStockObject(WHITE_BRUSH));
  65 //    Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
  66 //    SelectObject(ps.hdc, lastBrush);
  67 //    rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
  68     FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
  69 /*
  70     rt.left = pChildWnd->nSplitPos-SPLIT_WIDTH/2;
  71     rt.right = pChildWnd->nSplitPos+SPLIT_WIDTH/2+1;
  72     lastBrush = SelectBrush(ps.hdc, (HBRUSH)GetStockObject(COLOR_SPLITBAR));
  73     Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
  74     SelectObject(ps.hdc, lastBrush);
  75 #ifdef _NO_EXTENSIONS
  76     rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
  77     FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
  78 #endif
  79  */
  80     EndPaint(hWnd, &ps);
  81 }
  82
  83
  84 static void OnSize(ChildWnd* pChildWnd, WPARAM wParam, LPARAM lParam)
  85 {
  86     if (wParam != SIZE_MINIMIZED) {
  87                 //resize_tree(pChildWnd, LOWORD(lParam), HIWORD(lParam));
  88     }
  89 }
  90
  91 //
  92 //  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
  93 //
  94 //  PURPOSE:  Processes messages for the child windows.
  95 //
  96 //  WM_COMMAND  - process the application menu
  97 //  WM_PAINT    - Paint the main window
  98 //  WM_DESTROY  - post a quit message and return
  99 //
 100 //
 101 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 102 {
 103     static int last_split;
 104     ChildWnd* pChildWnd = (ChildWnd*)GetWindowLong(hWnd, GWL_USERDATA);
 105     ASSERT(pChildWnd);
 106
 107     if (1) {
 108         switch(message) {
 109         case WM_CREATE:
 110             return 0;
 111
 112         case WM_MDIACTIVATE: // set an alternate menu here
 113             if (lParam == (LPARAM)hWnd) {
 114             } else {
 115             }
 116             DrawMenuBar(hFrameWnd);
 117 //          return 0;
 118             break;
 119
 120         case WM_PAINT:
 121             OnPaint(hWnd, pChildWnd);
 122             return 0;
 123
 124                 case WM_NCDESTROY:
 125                         //SetWindowLong(hWnd, GWL_USERDATA, 0);
 126                         break;
 127
 128                 case WM_SETCURSOR:
 129                         if (LOWORD(lParam) == HTCLIENT) {
 130                                 POINT pt;
 131                                 GetCursorPos(&pt);
 132                                 ScreenToClient(hWnd, &pt);
 133
 134                                 if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 135                                         SetCursor(LoadCursor(0, IDC_SIZEWE));
 136                                         return TRUE;
 137                                 }
 138                         }
 139                         //goto def;
 140             break;
 141
 142         case WM_LBUTTONDOWN: {
 143                 RECT rt;
 144                 int x = LOWORD(lParam);
 145                 GetClientRect(hWnd, &rt);
 146                 if (x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 147                         last_split = pChildWnd->nSplitPos;
 148 #ifdef _NO_EXTENSIONS
 149                         draw_splitbar(hWnd, last_split);
 150 #endif
 151                         SetCapture(hWnd);
 152                 }
 153                 break;}
 154
 155         case WM_LBUTTONUP:
 156                 if (GetCapture() == hWnd) {
 157 #ifdef _NO_EXTENSIONS
 158                         RECT rt;
 159                         int x = LOWORD(lParam);
 160                         draw_splitbar(hWnd, last_split);
 161                         last_split = -1;
 162                         GetClientRect(hWnd, &rt);
 163                         pChildWnd->nSplitPos = x;
 164                         //resize_tree(pChildWnd, rt.right, rt.bottom);
 165 #endif
 166                         ReleaseCapture();
 167                 }
 168                 break;
 169
 170 #ifdef _NO_EXTENSIONS
 171         case WM_CAPTURECHANGED:
 172                 if (GetCapture()==hWnd && last_split>=0)
 173                         draw_splitbar(hWnd, last_split);
 174                 break;
 175 #endif
 176         case WM_KEYDOWN:
 177                 if (wParam == VK_ESCAPE)
 178                         if (GetCapture() == hWnd) {
 179                                 RECT rt;
 180 #ifdef _NO_EXTENSIONS
 181                                 draw_splitbar(hWnd, last_split);
 182 #else
 183                                 pChildWnd->nSplitPos = last_split;
 184 #endif
 185                                 GetClientRect(hWnd, &rt);
 186                                 //resize_tree(pChildWnd, rt.right, rt.bottom);
 187                                 last_split = -1;
 188                                 ReleaseCapture();
 189                                 SetCursor(LoadCursor(0, IDC_ARROW));
 190                         }
 191                 break;
 192
 193         case WM_MOUSEMOVE:
 194                 if (GetCapture() == hWnd) {
 195                         RECT rt;
 196                         int x = LOWORD(lParam);
 197 #ifdef _NO_EXTENSIONS
 198                         HDC hdc = GetDC(hWnd);
 199                         GetClientRect(hWnd, &rt);
 200                         rt.left = last_split-SPLIT_WIDTH/2;
 201                         rt.right = last_split+SPLIT_WIDTH/2+1;
 202                         InvertRect(hdc, &rt);
 203                         last_split = x;
 204                         rt.left = x-SPLIT_WIDTH/2;
 205                         rt.right = x+SPLIT_WIDTH/2+1;
 206                         InvertRect(hdc, &rt);
 207                         ReleaseDC(hWnd, hdc);
 208 #else
 209                         GetClientRect(hWnd, &rt);
 210                         if (x>=0 && x<rt.right) {
 211                                 pChildWnd->nSplitPos = x;
 212                                 resize_tree(pChildWnd, rt.right, rt.bottom);
 213                                 rt.left = x-SPLIT_WIDTH/2;
 214                                 rt.right = x+SPLIT_WIDTH/2+1;
 215                                 InvalidateRect(hWnd, &rt, FALSE);
 216                                 UpdateWindow(pChildWnd->left.hWnd);
 217                                 UpdateWindow(hWnd);
 218                                 UpdateWindow(pChildWnd->right.hWnd);
 219                         }
 220 #endif
 221                 }
 222                 break;
 223
 224 #ifndef _NO_EXTENSIONS
 225         case WM_GETMINMAXINFO:
 226                 DefMDIChildProc(hWnd, message, wParam, lParam);
 227                 {LPMINMAXINFO lpmmi = (LPMINMAXINFO)lParam;
 228                 lpmmi->ptMaxTrackSize.x <<= 1;//2*GetSystemMetrics(SM_CXSCREEN) / SM_CXVIRTUALSCREEN
 229                 lpmmi->ptMaxTrackSize.y <<= 1;//2*GetSystemMetrics(SM_CYSCREEN) / SM_CYVIRTUALSCREEN
 230                 break;}
 231 #endif
 232
 233         case WM_SETFOCUS:
 234                 SetCurrentDirectory(pChildWnd->szPath);
 235                 SetFocus(pChildWnd->nFocusPanel? pChildWnd->hRightWnd: pChildWnd->hLeftWnd);
 236                 break;
 237 /*
 238         case WM_COMMAND:
 239             pane = GetFocus()==pChildWnd->left.hWnd? &pChildWnd->left: &pChildWnd->right;
 240             switch(LOWORD(wParam)) {
 241             case ID_WINDOW_NEW_WINDOW:
 242                 return 0;
 243             default:
 244                 return pane_command(pane, LOWORD(wParam));
 245                 break;
 246             }
 247             break;
 248  */
 249         case WM_SIZE:
 250         if (wParam != SIZE_MINIMIZED) {
 251             OnSize(pChildWnd, wParam, lParam);
 252         }
 253         // fall through
 254         default: def:
 255         return DefMDIChildProc(hWnd, message, wParam, lParam);
 256    }
 257     return DefMDIChildProc(hWnd, message, wParam, lParam);
 258 }