subsys/system/explorer/desktop/desktop.cpp

   1 /*
   2  * Copyright 2003 Martin Fuchs
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20  //
  21  // Explorer clone
  22  //
  23  // desktop.cpp
  24  //
  25  // Martin Fuchs, 09.08.2003
  26  //
  27
  28
  29 #include "../utility/utility.h"
  30 #include "../utility/shellclasses.h"
  31 #include "../utility/shellbrowserimpl.h"
  32 #include "../utility/window.h"
  33
  34 #include "desktop.h"
  35 #include "../taskbar/desktopbar.h"
  36
  37 #include "../externals.h"
  38 #include "../explorer_intres.h"
  39
  40
  41 static BOOL (WINAPI*SetShellWindow)(HWND);
  42 static BOOL (WINAPI*SetShellWindowEx)(HWND, HWND);
  43
  44
  45 BOOL IsAnyDesktopRunning()
  46 {
  47         HINSTANCE shell32 = GetModuleHandle(_T("user32"));
  48
  49         SetShellWindow = (BOOL(WINAPI*)(HWND)) GetProcAddress(shell32, "SetShellWindow");
  50         SetShellWindowEx = (BOOL(WINAPI*)(HWND,HWND)) GetProcAddress(shell32, "SetShellWindowEx");
  51
  52         return GetShellWindow() != 0;
  53 }
  54
  55
  56 static void draw_desktop_background(HWND hwnd, HDC hdc)
  57 {
  58         ClientRect rect(hwnd);
  59
  60         PaintDesktop(hdc);
  61 /*
  62         HBRUSH bkgndBrush = CreateSolidBrush(RGB(0,32,160));    // dark blue
  63         FillRect(hdc, &rect, bkgndBrush);
  64         DeleteBrush(bkgndBrush);
  65 */
  66
  67         rect.left = rect.right - 280;
  68         rect.top = rect.bottom - 56 - DESKTOPBARBAR_HEIGHT;
  69         rect.right = rect.left + 250;
  70         rect.bottom = rect.top + 40;
  71
  72 #include "../buildno.h"
  73         static const LPCTSTR BkgndText = _T("ReactOS ")_T(KERNEL_VERSION_STR)_T(" Explorer\nby Martin Fuchs");
  74
  75         BkMode bkMode(hdc, TRANSPARENT);
  76
  77         TextColor textColor(hdc, RGB(128,128,192));
  78         DrawText(hdc, BkgndText, -1, &rect, DT_RIGHT);
  79
  80         SetTextColor(hdc, RGB(255,255,255));
  81         --rect.right;
  82         ++rect.top;
  83         DrawText(hdc, BkgndText, -1, &rect, DT_RIGHT);
  84 }
  85
  86
  87 LRESULT BackgroundWindow::WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
  88 {
  89         switch(nmsg) {
  90           case WM_ERASEBKGND:
  91                 PaintDesktop((HDC)wparam);
  92                 return TRUE;
  93
  94           case WM_MBUTTONDBLCLK:
  95                 explorer_show_frame(_hwnd, SW_SHOWNORMAL);
  96                 break;
  97
  98           default:
  99                 return super::WndProc(nmsg, wparam, lparam);
 100         }
 101
 102         return 0;
 103 }
 104
 105
 106 DesktopWindow::DesktopWindow(HWND hwnd)
 107  :      super(hwnd)
 108 {
 109         _pShellView = NULL;
 110 }
 111
 112 DesktopWindow::~DesktopWindow()
 113 {
 114         if (_pShellView)
 115                 _pShellView->Release();
 116 }
 117
 118
 119 HWND DesktopWindow::Create()
 120 {
 121         IconWindowClass wcDesktop(_T("Progman"), IDI_REACTOS, CS_DBLCLKS);
 122         wcDesktop.hbrBackground = (HBRUSH)(COLOR_BACKGROUND+1);
 123
 124         int width = GetSystemMetrics(SM_CXSCREEN);
 125         int height = GetSystemMetrics(SM_CYSCREEN);
 126
 127         HWND hwndDesktop = Window::Create(WINDOW_CREATOR(DesktopWindow),
 128                                         WS_EX_TOOLWINDOW, wcDesktop, _T("Program Manager"), WS_POPUP|WS_VISIBLE|WS_CLIPCHILDREN,
 129                                         0, 0, width, height, 0);
 130
 131          // work around to display desktop bar in Wine
 132         ShowWindow(GET_WINDOW(DesktopWindow, hwndDesktop)->_desktopBar, SW_SHOW);
 133
 134          // work around for Windows NT, Win 98, ...
 135          // Without this the desktop has mysteriously only a size of 800x600 pixels.
 136         MoveWindow(hwndDesktop, 0, 0, width, height, TRUE);
 137
 138         return hwndDesktop;
 139 }
 140
 141
 142 LRESULT DesktopWindow::Init(LPCREATESTRUCT pcs)
 143 {
 144         if (super::Init(pcs))
 145                 return 1;
 146
 147         HRESULT hr = Desktop()->CreateViewObject(_hwnd, IID_IShellView, (void**)&_pShellView);
 148 /* also possible:
 149         SFV_CREATE sfv_create;
 150
 151         sfv_create.cbSize = sizeof(SFV_CREATE);
 152         sfv_create.pshf = Desktop();
 153         sfv_create.psvOuter = NULL;
 154         sfv_create.psfvcb = NULL;
 155
 156         HRESULT hr = SHCreateShellFolderView(&sfv_create, &_pShellView);
 157 */
 158         HWND hWndView = 0;
 159
 160         if (SUCCEEDED(hr)) {
 161                 FOLDERSETTINGS fs;
 162
 163                 fs.ViewMode = FVM_ICON;
 164                 fs.fFlags = FWF_DESKTOP|FWF_NOCLIENTEDGE|FWF_NOSCROLL|FWF_BESTFITWINDOW|FWF_SNAPTOGRID;
 165
 166                 ClientRect rect(_hwnd);
 167
 168                 hr = _pShellView->CreateViewWindow(NULL, &fs, this, &rect, &hWndView);
 169
 170                 //TODO: use IShellBrowser::GetViewStateStream() to restore previous view state -> see SHOpenRegStream()
 171
 172                 if (SUCCEEDED(hr)) {
 173                         _pShellView->UIActivate(SVUIA_ACTIVATE_FOCUS);
 174
 175                 /*
 176                         IShellView2* pShellView2;
 177
 178                         hr = _pShellView->QueryInterface(IID_IShellView2, (void**)&pShellView2);
 179
 180                         SV2CVW2_PARAMS params;
 181                         params.cbSize = sizeof(SV2CVW2_PARAMS);
 182                         params.psvPrev = _pShellView;
 183                         params.pfs = &fs;
 184                         params.psbOwner = this;
 185                         params.prcView = &rect;
 186                         params.pvid = params.pvid;//@@
 187
 188                         hr = pShellView2->CreateViewWindow2(&params);
 189                         params.pvid;
 190                 */
 191
 192                 /*
 193                         IFolderView* pFolderView;
 194
 195                         hr = _pShellView->QueryInterface(IID_IFolderView, (void**)&pFolderView);
 196
 197                         if (SUCCEEDED(hr)) {
 198                                 hr = pFolderView->GetAutoArrange();
 199                                 hr = pFolderView->SetCurrentViewMode(FVM_DETAILS);
 200                         }
 201                 */
 202
 203                         HWND hwndFolderView = ::GetNextWindow(hWndView, GW_CHILD);
 204
 205                          // work around for Windows NT, Win 98, ...
 206                          // Without this the desktop has mysteriously only a size of 800x600 pixels.
 207                         MoveWindow(hwndFolderView, 0, 0, rect.right, rect.bottom, TRUE);
 208
 209                         new BackgroundWindow(hwndFolderView);
 210                 }
 211         }
 212
 213         if (hWndView && SetShellWindowEx)
 214                 SetShellWindowEx(_hwnd, hWndView);
 215         else if (SetShellWindow)
 216                 SetShellWindow(_hwnd);
 217
 218          // create the explorer bar
 219         _desktopBar = DesktopBar::Create();
 220
 221         return 0;
 222 }
 223
 224
 225 LRESULT DesktopWindow::WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
 226 {
 227         switch(nmsg) {
 228           case WM_PAINT:
 229                 draw_desktop_background(_hwnd, PaintCanvas(_hwnd));
 230                 break;
 231
 232           case WM_LBUTTONDBLCLK:
 233           case WM_RBUTTONDBLCLK:
 234           case WM_MBUTTONDBLCLK:
 235                 explorer_show_frame(_hwnd, SW_SHOWNORMAL);
 236                 break;
 237
 238           case WM_GETISHELLBROWSER:
 239                 return (LRESULT)static_cast<IShellBrowser*>(this);
 240
 241           case WM_DESTROY:
 242
 243                 //TODO: use IShellBrowser::GetViewStateStream() and _pShellView->SaveViewState() to store view state
 244
 245                 if (SetShellWindow)
 246                         SetShellWindow(0);
 247                 break;
 248
 249           case WM_CLOSE:
 250                 break;  // Over-ride close. We need to close desktop some other way.
 251
 252           case WM_SYSCOMMAND:
 253                 if (wparam == SC_TASKLIST) {
 254                         if (_desktopBar)
 255                                 SendMessage(_desktopBar, nmsg, wparam, lparam);
 256                 }
 257                 goto def;
 258
 259           default: def:
 260                 return super::WndProc(nmsg, wparam, lparam);
 261         }
 262
 263         return 0;
 264 }