Sweden-Number/programs/explorer/desktop.c

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/*
* Explorer desktop support
*
* Copyright 2006 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdio.h>
#define OEMRESOURCE
#include <windows.h>
#include <rpc.h>
#include "wine/gdi_driver.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "explorer_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(explorer);
#define DESKTOP_CLASS_ATOM ((LPCWSTR)MAKEINTATOM(32769))
#define DESKTOP_ALL_ACCESS 0x01ff
static HMODULE graphics_driver;
static BOOL using_root;
/* screen saver handler */
static BOOL start_screensaver( void )
{
if (using_root)
{
const char *argv[3] = { "xdg-screensaver", "activate", NULL };
int pid = _spawnvp( _P_DETACH, argv[0], argv );
if (pid > 0)
{
WINE_TRACE( "started process %d\n", pid );
return TRUE;
}
}
return FALSE;
}
/* window procedure for the desktop window */
static LRESULT WINAPI desktop_wnd_proc( HWND hwnd, UINT message, WPARAM wp, LPARAM lp )
{
WINE_TRACE( "got msg %04x wp %lx lp %lx\n", message, wp, lp );
switch(message)
{
case WM_SYSCOMMAND:
switch(wp & 0xfff0)
{
case SC_CLOSE:
ExitWindows( 0, 0 );
break;
case SC_SCREENSAVE:
return start_screensaver();
}
return 0;
case WM_CLOSE:
PostQuitMessage(0);
return 0;
case WM_SETCURSOR:
return (LRESULT)SetCursor( LoadCursorA( 0, (LPSTR)IDC_ARROW ) );
case WM_NCHITTEST:
return HTCLIENT;
case WM_ERASEBKGND:
if (!using_root) PaintDesktop( (HDC)wp );
return TRUE;
case WM_SETTINGCHANGE:
if (wp == SPI_SETDESKWALLPAPER)
SystemParametersInfoW( SPI_SETDESKWALLPAPER, 0, NULL, FALSE );
return 0;
case WM_PAINT:
{
PAINTSTRUCT ps;
BeginPaint( hwnd, &ps );
if (!using_root && ps.fErase) PaintDesktop( ps.hdc );
EndPaint( hwnd, &ps );
}
return 0;
default:
return DefWindowProcW( hwnd, message, wp, lp );
}
}
/* create the desktop and the associated driver window, and make it the current desktop */
static BOOL create_desktop( const WCHAR *name, unsigned int width, unsigned int height )
{
static const WCHAR rootW[] = {'r','o','o','t',0};
HDESK desktop;
BOOL ret = FALSE;
BOOL (CDECL *create_desktop_func)(unsigned int, unsigned int);
desktop = CreateDesktopW( name, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
if (!desktop)
{
WINE_ERR( "failed to create desktop %s error %d\n", wine_dbgstr_w(name), GetLastError() );
ExitProcess( 1 );
}
/* magic: desktop "root" means use the root window */
if (graphics_driver && strcmpiW( name, rootW ))
{
create_desktop_func = (void *)GetProcAddress( graphics_driver, "wine_create_desktop" );
if (create_desktop_func) ret = create_desktop_func( width, height );
}
SetThreadDesktop( desktop );
return ret;
}
/* parse the desktop size specification */
static BOOL parse_size( const WCHAR *size, unsigned int *width, unsigned int *height )
{
WCHAR *end;
*width = strtoulW( size, &end, 10 );
if (end == size) return FALSE;
if (*end != 'x') return FALSE;
size = end + 1;
*height = strtoulW( size, &end, 10 );
return !*end;
}
/* retrieve the desktop name to use if not specified on the command line */
static const WCHAR *get_default_desktop_name(void)
{
static const WCHAR desktopW[] = {'D','e','s','k','t','o','p',0};
static const WCHAR defaultW[] = {'D','e','f','a','u','l','t',0};
static const WCHAR explorer_keyW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
'E','x','p','l','o','r','e','r',0};
static WCHAR buffer[MAX_PATH];
DWORD size = sizeof(buffer);
HDESK desk = GetThreadDesktop( GetCurrentThreadId() );
WCHAR *ret = NULL;
HKEY hkey;
if (desk && GetUserObjectInformationW( desk, UOI_NAME, buffer, sizeof(buffer)/sizeof(WCHAR), NULL ))
{
if (strcmpiW( buffer, defaultW )) return buffer;
}
/* @@ Wine registry key: HKCU\Software\Wine\Explorer */
if (!RegOpenKeyW( HKEY_CURRENT_USER, explorer_keyW, &hkey ))
{
if (!RegQueryValueExW( hkey, desktopW, 0, NULL, (LPBYTE)buffer, &size )) ret = buffer;
RegCloseKey( hkey );
}
return ret;
}
/* retrieve the default desktop size from the registry */
static BOOL get_default_desktop_size( const WCHAR *name, unsigned int *width, unsigned int *height )
{
static const WCHAR desktop_keyW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
'E','x','p','l','o','r','e','r','\\',
'D','e','s','k','t','o','p','s',0};
HKEY hkey;
WCHAR buffer[64];
DWORD size = sizeof(buffer);
BOOL found = FALSE;
*width = 800;
*height = 600;
/* @@ Wine registry key: HKCU\Software\Wine\Explorer\Desktops */
if (!RegOpenKeyW( HKEY_CURRENT_USER, desktop_keyW, &hkey ))
{
if (!RegQueryValueExW( hkey, name, 0, NULL, (LPBYTE)buffer, &size ))
{
found = TRUE;
if (!parse_size( buffer, width, height )) *width = *height = 0;
}
RegCloseKey( hkey );
}
return found;
}
static void initialize_display_settings( HWND desktop )
{
static const WCHAR display_device_guid_propW[] = {
'_','_','w','i','n','e','_','d','i','s','p','l','a','y','_',
'd','e','v','i','c','e','_','g','u','i','d',0 };
GUID guid;
RPC_CSTR guid_str;
ATOM guid_atom;
DEVMODEW dmW;
UuidCreate( &guid );
UuidToStringA( &guid, &guid_str );
WINE_TRACE( "display guid %s\n", guid_str );
guid_atom = GlobalAddAtomA( (LPCSTR)guid_str );
SetPropW( desktop, display_device_guid_propW, ULongToHandle(guid_atom) );
RpcStringFreeA( &guid_str );
/* Store current display mode in the registry */
if (EnumDisplaySettingsExW( NULL, ENUM_CURRENT_SETTINGS, &dmW, 0 ))
{
WINE_TRACE( "Current display mode %ux%u %u bpp %u Hz\n", dmW.dmPelsWidth,
dmW.dmPelsHeight, dmW.dmBitsPerPel, dmW.dmDisplayFrequency );
ChangeDisplaySettingsExW( NULL, &dmW, 0,
CDS_GLOBAL | CDS_NORESET | CDS_UPDATEREGISTRY,
NULL );
}
}
static void set_desktop_window_title( HWND hwnd, const WCHAR *name )
{
static const WCHAR desktop_nameW[] = {'W','i','n','e',' ','d','e','s','k','t','o','p',0};
static const WCHAR desktop_name_separatorW[] = {' ', '-', ' ', 0};
WCHAR *window_titleW = NULL;
int window_title_len;
if (!name[0])
{
SetWindowTextW( hwnd, desktop_nameW );
return;
}
window_title_len = strlenW(name) * sizeof(WCHAR)
+ sizeof(desktop_name_separatorW)
+ sizeof(desktop_nameW);
window_titleW = HeapAlloc( GetProcessHeap(), 0, window_title_len );
if (!window_titleW)
{
SetWindowTextW( hwnd, desktop_nameW );
return;
}
strcpyW( window_titleW, name );
strcatW( window_titleW, desktop_name_separatorW );
strcatW( window_titleW, desktop_nameW );
SetWindowTextW( hwnd, window_titleW );
HeapFree( GetProcessHeap(), 0, window_titleW );
}
/* main desktop management function */
void manage_desktop( WCHAR *arg )
{
static const WCHAR displayW[] = {'D','I','S','P','L','A','Y',0};
static const WCHAR messageW[] = {'M','e','s','s','a','g','e',0};
MSG msg;
HDC hdc;
HWND hwnd, msg_hwnd;
unsigned int width, height;
WCHAR *cmdline = NULL;
WCHAR *p = arg;
const WCHAR *name = NULL;
/* get the rest of the command line (if any) */
while (*p && !isspace(*p)) p++;
if (*p)
{
*p++ = 0;
while (*p && isspace(*p)) p++;
if (*p) cmdline = p;
}
/* parse the desktop option */
/* the option is of the form /desktop=name[,widthxheight] */
if (*arg == '=' || *arg == ',')
{
arg++;
name = arg;
if ((p = strchrW( arg, ',' ))) *p++ = 0;
if (!p || !parse_size( p, &width, &height ))
get_default_desktop_size( name, &width, &height );
}
else if ((name = get_default_desktop_name()))
{
if (!get_default_desktop_size( name, &width, &height )) width = height = 0;
}
hdc = CreateDCW( displayW, NULL, NULL, NULL );
graphics_driver = __wine_get_driver_module( hdc );
if (name && width && height) using_root = !create_desktop( name, width, height );
/* create the desktop window */
hwnd = CreateWindowExW( 0, DESKTOP_CLASS_ATOM, NULL,
WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
GetSystemMetrics(SM_XVIRTUALSCREEN), GetSystemMetrics(SM_YVIRTUALSCREEN),
GetSystemMetrics(SM_CXVIRTUALSCREEN), GetSystemMetrics(SM_CYVIRTUALSCREEN),
0, 0, 0, NULL );
/* create the HWND_MESSAGE parent */
msg_hwnd = CreateWindowExW( 0, messageW, NULL, WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
0, 0, 100, 100, 0, 0, 0, NULL );
DeleteDC( hdc );
if (hwnd == GetDesktopWindow())
{
HMODULE shell32;
void (WINAPI *pShellDDEInit)( BOOL );
SetWindowLongPtrW( hwnd, GWLP_WNDPROC, (LONG_PTR)desktop_wnd_proc );
SendMessageW( hwnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIconW( 0, MAKEINTRESOURCEW(OIC_WINLOGO)));
if (name) set_desktop_window_title( hwnd, name );
ShowWindow( hwnd, SW_SHOW );
SystemParametersInfoW( SPI_SETDESKWALLPAPER, 0, NULL, FALSE );
ClipCursor( NULL );
initialize_display_settings( hwnd );
initialize_appbar();
initialize_systray( graphics_driver, using_root );
if ((shell32 = LoadLibraryA( "shell32.dll" )) &&
(pShellDDEInit = (void *)GetProcAddress( shell32, (LPCSTR)188)))
{
pShellDDEInit( TRUE );
}
}
else
{
DestroyWindow( hwnd ); /* someone beat us to it */
hwnd = 0;
}
if (GetAncestor( msg_hwnd, GA_PARENT )) DestroyWindow( msg_hwnd ); /* someone beat us to it */
/* if we have a command line, execute it */
if (cmdline)
{
STARTUPINFOW si;
PROCESS_INFORMATION pi;
memset( &si, 0, sizeof(si) );
si.cb = sizeof(si);
WINE_TRACE( "starting %s\n", wine_dbgstr_w(cmdline) );
if (CreateProcessW( NULL, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi ))
{
CloseHandle( pi.hThread );
CloseHandle( pi.hProcess );
}
}
/* run the desktop message loop */
if (hwnd)
{
WINE_TRACE( "desktop message loop starting on hwnd %p\n", hwnd );
while (GetMessageW( &msg, 0, 0, 0 )) DispatchMessageW( &msg );
WINE_TRACE( "desktop message loop exiting for hwnd %p\n", hwnd );
}
ExitProcess( 0 );
}