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 <stdio.h>
#include <windows.h>
#include <wine/debug.h>
#include "explorer_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(explorer);
#define DESKTOP_CLASS_ATOM MAKEINTATOMW(32769)
#define DESKTOP_ALL_ACCESS 0x01ff
static BOOL using_root;
/* window procedure for the desktop window */
static LRESULT WINAPI desktop_wnd_proc( HWND hwnd, UINT message, WPARAM wp, LPARAM lp )
{
WINE_TRACE( "got msg %x wp %x lp %lx\n", message, wp, lp );
switch(message)
{
case WM_SYSCOMMAND:
if ((wp & 0xfff0) == SC_CLOSE) ExitWindows( 0, 0 );
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_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 X11 window, and make it the current desktop */
static unsigned long create_desktop( const char *name, unsigned int width, unsigned int height )
{
HMODULE x11drv = GetModuleHandleA( "winex11.drv" );
HDESK desktop;
unsigned long xwin = 0;
unsigned long (*create_desktop_func)(unsigned int, unsigned int);
desktop = CreateDesktopA( name, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
if (!desktop)
{
WINE_ERR( "failed to create desktop %s error %ld\n", wine_dbgstr_a(name), GetLastError() );
ExitProcess( 1 );
}
/* magic: desktop "root" means use the X11 root window */
if (x11drv && strcasecmp( name, "root" ))
{
create_desktop_func = (void *)GetProcAddress( x11drv, "wine_create_desktop" );
if (create_desktop_func) xwin = create_desktop_func( width, height );
}
SetThreadDesktop( desktop );
return xwin;
}
/* retrieve the default desktop size from the X11 driver config */
/* FIXME: this is for backwards compatibility, should probably be changed */
static BOOL get_default_desktop_size( unsigned int *width, unsigned int *height )
{
HKEY hkey;
char buffer[64];
DWORD size = sizeof(buffer);
BOOL ret = FALSE;
/* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\X11 Driver", &hkey )) return FALSE;
if (!RegQueryValueExA( hkey, "Desktop", 0, NULL, (LPBYTE)buffer, &size ))
ret = (sscanf( buffer, "%ux%u", width, height ) == 2);
RegCloseKey( hkey );
return ret;
}
/* main desktop management function */
void manage_desktop( char *arg )
{
MSG msg;
HWND hwnd;
unsigned long xwin = 0;
unsigned int width, height;
char *cmdline = NULL;
char *p = arg;
static const WCHAR desktop_nameW[] = {'W','i','n','e',' ','d','e','s','k','t','o','p',0};
/* 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++;
if ((p = strchr( arg, ',' ))) *p++ = 0;
if (!p || sscanf( p, "%ux%u", &width, &height ) != 2)
{
width = 800;
height = 600;
}
xwin = create_desktop( arg, width, height );
}
else if (get_default_desktop_size( &width, &height ))
{
xwin = create_desktop( "Default", width, height );
}
if (!xwin) /* using the root window */
{
using_root = TRUE;
width = GetSystemMetrics(SM_CXSCREEN);
height = GetSystemMetrics(SM_CYSCREEN);
}
/* create the desktop window */
hwnd = CreateWindowExW( 0, DESKTOP_CLASS_ATOM, NULL,
WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
0, 0, width, height, 0, 0, 0, NULL );
if (hwnd == GetDesktopWindow())
{
SetWindowLongPtrW( hwnd, GWLP_WNDPROC, (LONG_PTR)desktop_wnd_proc );
SendMessageW( hwnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIconW( 0, MAKEINTRESOURCEW(OIC_WINLOGO)));
SetWindowTextW( hwnd, desktop_nameW );
SystemParametersInfoA( SPI_SETDESKPATTERN, -1, NULL, FALSE );
SetDeskWallPaper( (LPSTR)-1 );
initialize_hal();
initialize_systray();
}
else
{
DestroyWindow( hwnd ); /* someone beat us to it */
hwnd = 0;
}
/* if we have a command line, execute it */
if (cmdline)
{
STARTUPINFOA si;
PROCESS_INFORMATION pi;
memset( &si, 0, sizeof(si) );
si.cb = sizeof(si);
WINE_TRACE( "starting %s\n", wine_dbgstr_a(cmdline) );
if (CreateProcessA( 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 );
}