2 * Explorer desktop support
4 * Copyright 2006 Alexandre Julliard
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.
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.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
24 #include "wine/unicode.h"
30 #include <wine/debug.h>
31 #include "explorer_private.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(explorer);
35 #define DESKTOP_CLASS_ATOM ((LPCWSTR)MAKEINTATOM(32769))
36 #define DESKTOP_ALL_ACCESS 0x01ff
38 static BOOL using_root;
40 /* screen saver handler */
41 static BOOL start_screensaver( void )
45 const char *argv[3] = { "xdg-screensaver", "activate", NULL };
46 int pid = spawnvp( _P_DETACH, argv[0], argv );
49 WINE_TRACE( "started process %d\n", pid );
56 /* window procedure for the desktop window */
57 static LRESULT WINAPI desktop_wnd_proc( HWND hwnd, UINT message, WPARAM wp, LPARAM lp )
59 WINE_TRACE( "got msg %04x wp %lx lp %lx\n", message, wp, lp );
70 return start_screensaver();
79 return (LRESULT)SetCursor( LoadCursorA( 0, (LPSTR)IDC_ARROW ) );
85 if (!using_root) PaintDesktop( (HDC)wp );
91 BeginPaint( hwnd, &ps );
92 if (!using_root && ps.fErase) PaintDesktop( ps.hdc );
93 EndPaint( hwnd, &ps );
98 return DefWindowProcW( hwnd, message, wp, lp );
102 /* create the desktop and the associated X11 window, and make it the current desktop */
103 static unsigned long create_desktop( const WCHAR *name, unsigned int width, unsigned int height )
105 static const WCHAR rootW[] = {'r','o','o','t',0};
106 HMODULE x11drv = GetModuleHandleA( "winex11.drv" );
108 unsigned long xwin = 0;
109 unsigned long (CDECL *create_desktop_func)(unsigned int, unsigned int);
111 desktop = CreateDesktopW( name, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
114 WINE_ERR( "failed to create desktop %s error %d\n", wine_dbgstr_w(name), GetLastError() );
117 /* magic: desktop "root" means use the X11 root window */
118 if (x11drv && strcmpiW( name, rootW ))
120 create_desktop_func = (void *)GetProcAddress( x11drv, "wine_create_desktop" );
121 if (create_desktop_func) xwin = create_desktop_func( width, height );
123 SetThreadDesktop( desktop );
127 /* parse the desktop size specification */
128 static BOOL parse_size( const WCHAR *size, unsigned int *width, unsigned int *height )
132 *width = strtoulW( size, &end, 10 );
133 if (end == size) return FALSE;
134 if (*end != 'x') return FALSE;
136 *height = strtoulW( size, &end, 10 );
140 /* retrieve the desktop name to use if not specified on the command line */
141 static const WCHAR *get_default_desktop_name(void)
143 static const WCHAR desktopW[] = {'D','e','s','k','t','o','p',0};
144 static const WCHAR defaultW[] = {'D','e','f','a','u','l','t',0};
145 static const WCHAR explorer_keyW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
146 'E','x','p','l','o','r','e','r',0};
147 static WCHAR buffer[MAX_PATH];
148 DWORD size = sizeof(buffer);
149 HDESK desk = GetThreadDesktop( GetCurrentThreadId() );
153 if (desk && GetUserObjectInformationW( desk, UOI_NAME, buffer, sizeof(buffer)/sizeof(WCHAR), NULL ))
155 if (strcmpiW( buffer, defaultW )) return buffer;
158 /* @@ Wine registry key: HKCU\Software\Wine\Explorer */
159 if (!RegOpenKeyW( HKEY_CURRENT_USER, explorer_keyW, &hkey ))
161 if (!RegQueryValueExW( hkey, desktopW, 0, NULL, (LPBYTE)buffer, &size )) ret = buffer;
167 /* retrieve the default desktop size from the registry */
168 static BOOL get_default_desktop_size( const WCHAR *name, unsigned int *width, unsigned int *height )
170 static const WCHAR desktop_keyW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
171 'E','x','p','l','o','r','e','r','\\',
172 'D','e','s','k','t','o','p','s',0};
175 DWORD size = sizeof(buffer);
181 /* @@ Wine registry key: HKCU\Software\Wine\Explorer\Desktops */
182 if (!RegOpenKeyW( HKEY_CURRENT_USER, desktop_keyW, &hkey ))
184 if (!RegQueryValueExW( hkey, name, 0, NULL, (LPBYTE)buffer, &size ))
187 if (!parse_size( buffer, width, height )) *width = *height = 0;
194 static void initialize_display_settings( HWND desktop )
196 static const WCHAR display_device_guid_propW[] = {
197 '_','_','w','i','n','e','_','d','i','s','p','l','a','y','_',
198 'd','e','v','i','c','e','_','g','u','i','d',0 };
205 UuidToStringA( &guid, &guid_str );
206 WINE_TRACE( "display guid %s\n", guid_str );
208 guid_atom = GlobalAddAtomA( (LPCSTR)guid_str );
209 SetPropW( desktop, display_device_guid_propW, ULongToHandle(guid_atom) );
211 RpcStringFreeA( &guid_str );
213 /* Store current display mode in the registry */
214 if (EnumDisplaySettingsExW( NULL, ENUM_CURRENT_SETTINGS, &dmW, 0 ))
216 WINE_TRACE( "Current display mode %ux%u %u bpp %u Hz\n", dmW.dmPelsWidth,
217 dmW.dmPelsHeight, dmW.dmBitsPerPel, dmW.dmDisplayFrequency );
218 ChangeDisplaySettingsExW( NULL, &dmW, 0,
219 CDS_GLOBAL | CDS_NORESET | CDS_UPDATEREGISTRY,
224 static void set_desktop_window_title( HWND hwnd, const WCHAR *name )
226 static const WCHAR desktop_nameW[] = {'W','i','n','e',' ','d','e','s','k','t','o','p',0};
227 static const WCHAR desktop_name_separatorW[] = {' ', '-', ' ', 0};
228 WCHAR *window_titleW = NULL;
229 int window_title_len;
233 SetWindowTextW( hwnd, desktop_nameW );
237 window_title_len = strlenW(name) * sizeof(WCHAR)
238 + sizeof(desktop_name_separatorW)
239 + sizeof(desktop_nameW);
240 window_titleW = HeapAlloc( GetProcessHeap(), 0, window_title_len );
243 SetWindowTextW( hwnd, desktop_nameW );
247 strcpyW( window_titleW, name );
248 strcatW( window_titleW, desktop_name_separatorW );
249 strcatW( window_titleW, desktop_nameW );
251 SetWindowTextW( hwnd, window_titleW );
252 HeapFree( GetProcessHeap(), 0, window_titleW );
255 /* main desktop management function */
256 void manage_desktop( WCHAR *arg )
258 static const WCHAR defaultW[] = {'D','e','f','a','u','l','t',0};
259 static const WCHAR messageW[] = {'M','e','s','s','a','g','e',0};
262 unsigned long xwin = 0;
263 unsigned int width, height;
264 WCHAR *cmdline = NULL;
266 const WCHAR *name = NULL;
268 /* get the rest of the command line (if any) */
269 while (*p && !isspace(*p)) p++;
273 while (*p && isspace(*p)) p++;
277 /* parse the desktop option */
278 /* the option is of the form /desktop=name[,widthxheight] */
279 if (*arg == '=' || *arg == ',')
283 if ((p = strchrW( arg, ',' ))) *p++ = 0;
284 if (!p || !parse_size( p, &width, &height ))
285 get_default_desktop_size( name, &width, &height );
287 else if ((name = get_default_desktop_name()))
289 if (!get_default_desktop_size( name, &width, &height )) width = height = 0;
291 else /* check for the X11 driver key for backwards compatibility (to be removed) */
293 static const WCHAR desktopW[] = {'D','e','s','k','t','o','p',0};
294 static const WCHAR x11_keyW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
295 'X','1','1',' ','D','r','i','v','e','r',0};
298 DWORD size = sizeof(buffer);
301 /* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
302 if (!RegOpenKeyW( HKEY_CURRENT_USER, x11_keyW, &hkey ))
304 if (!RegQueryValueExW( hkey, desktopW, 0, NULL, (LPBYTE)buffer, &size ))
307 if (!parse_size( buffer, &width, &height )) width = height = 0;
313 if (name && width && height) xwin = create_desktop( name, width, height );
315 if (!xwin) using_root = TRUE; /* using the root window */
317 /* create the desktop window */
318 hwnd = CreateWindowExW( 0, DESKTOP_CLASS_ATOM, NULL,
319 WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
320 GetSystemMetrics(SM_XVIRTUALSCREEN), GetSystemMetrics(SM_YVIRTUALSCREEN),
321 GetSystemMetrics(SM_CXVIRTUALSCREEN), GetSystemMetrics(SM_CYVIRTUALSCREEN),
324 /* create the HWND_MESSAGE parent */
325 msg_hwnd = CreateWindowExW( 0, messageW, NULL, WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
326 0, 0, 100, 100, 0, 0, 0, NULL );
328 if (hwnd == GetDesktopWindow())
331 void (WINAPI *pShellDDEInit)( BOOL );
333 SetWindowLongPtrW( hwnd, GWLP_WNDPROC, (LONG_PTR)desktop_wnd_proc );
334 SendMessageW( hwnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIconW( 0, MAKEINTRESOURCEW(OIC_WINLOGO)));
335 if (name) set_desktop_window_title( hwnd, name );
336 SystemParametersInfoA( SPI_SETDESKPATTERN, -1, NULL, FALSE );
337 SetDeskWallPaper( (LPSTR)-1 );
339 initialize_display_settings( hwnd );
341 initialize_systray( using_root );
343 if ((shell32 = LoadLibraryA( "shell32.dll" )) &&
344 (pShellDDEInit = (void *)GetProcAddress( shell32, (LPCSTR)188)))
346 pShellDDEInit( TRUE );
351 DestroyWindow( hwnd ); /* someone beat us to it */
355 if (GetAncestor( msg_hwnd, GA_PARENT )) DestroyWindow( msg_hwnd ); /* someone beat us to it */
357 /* if we have a command line, execute it */
361 PROCESS_INFORMATION pi;
363 memset( &si, 0, sizeof(si) );
365 WINE_TRACE( "starting %s\n", wine_dbgstr_w(cmdline) );
366 if (CreateProcessW( NULL, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi ))
368 CloseHandle( pi.hThread );
369 CloseHandle( pi.hProcess );
373 /* run the desktop message loop */
376 WINE_TRACE( "desktop message loop starting on hwnd %p\n", hwnd );
377 while (GetMessageW( &msg, 0, 0, 0 )) DispatchMessageW( &msg );
378 WINE_TRACE( "desktop message loop exiting for hwnd %p\n", hwnd );