2 * Desktop window class.
4 * Copyright 1994 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
36 static HBRUSH hbrushPattern
;
37 static HBITMAP hbitmapWallPaper
;
38 static SIZE bitmapSize
;
39 static BOOL fTileWallPaper
;
42 /*********************************************************************
43 * desktop class descriptor
45 const struct builtin_class_descr DESKTOP_builtin_class
=
47 (LPCWSTR
)DESKTOP_CLASS_ATOM
, /* name */
48 CS_DBLCLKS
, /* style */
49 WINPROC_DESKTOP
, /* proc */
51 IDC_ARROW
, /* cursor */
52 (HBRUSH
)(COLOR_BACKGROUND
+1) /* brush */
56 /***********************************************************************
59 static HBITMAP
DESKTOP_LoadBitmap( const WCHAR
*filename
)
63 if (!filename
[0]) return 0;
64 hbitmap
= LoadImageW( 0, filename
, IMAGE_BITMAP
, 0, 0, LR_CREATEDIBSECTION
| LR_LOADFROMFILE
);
67 WCHAR buffer
[MAX_PATH
];
68 UINT len
= GetWindowsDirectoryW( buffer
, MAX_PATH
- 2 );
69 if (buffer
[len
- 1] != '\\') buffer
[len
++] = '\\';
70 lstrcpynW( buffer
+ len
, filename
, MAX_PATH
- len
);
71 hbitmap
= LoadImageW( 0, buffer
, IMAGE_BITMAP
, 0, 0, LR_CREATEDIBSECTION
| LR_LOADFROMFILE
);
76 /***********************************************************************
79 static void init_wallpaper( const WCHAR
*wallpaper
)
81 HBITMAP hbitmap
= DESKTOP_LoadBitmap( wallpaper
);
83 if (hbitmapWallPaper
) DeleteObject( hbitmapWallPaper
);
84 hbitmapWallPaper
= hbitmap
;
88 GetObjectA( hbitmap
, sizeof(bmp
), &bmp
);
89 bitmapSize
.cx
= (bmp
.bmWidth
!= 0) ? bmp
.bmWidth
: 1;
90 bitmapSize
.cy
= (bmp
.bmHeight
!= 0) ? bmp
.bmHeight
: 1;
91 fTileWallPaper
= GetProfileIntA( "desktop", "TileWallPaper", 0 );
95 /***********************************************************************
98 LRESULT WINAPI
DesktopWndProc( HWND hwnd
, UINT message
, WPARAM wParam
, LPARAM lParam
)
100 if (message
== WM_NCCREATE
) return TRUE
;
101 return 0; /* all other messages are ignored */
104 /***********************************************************************
105 * PaintDesktop (USER32.@)
108 BOOL WINAPI
PaintDesktop(HDC hdc
)
110 HWND hwnd
= GetDesktopWindow();
112 /* check for an owning thread; otherwise don't paint anything (non-desktop mode) */
113 if (GetWindowThreadProcessId( hwnd
, NULL
))
117 GetClientRect( hwnd
, &rect
);
119 /* Paint desktop pattern (only if wall paper does not cover everything) */
121 if (!hbitmapWallPaper
||
122 (!fTileWallPaper
&& ((bitmapSize
.cx
< rect
.right
) || (bitmapSize
.cy
< rect
.bottom
))))
124 HBRUSH brush
= hbrushPattern
;
125 if (!brush
) brush
= (HBRUSH
)GetClassLongPtrW( hwnd
, GCLP_HBRBACKGROUND
);
126 /* Set colors in case pattern is a monochrome bitmap */
127 SetBkColor( hdc
, RGB(0,0,0) );
128 SetTextColor( hdc
, GetSysColor(COLOR_BACKGROUND
) );
129 FillRect( hdc
, &rect
, brush
);
132 /* Paint wall paper */
134 if (hbitmapWallPaper
)
137 HDC hMemDC
= CreateCompatibleDC( hdc
);
139 SelectObject( hMemDC
, hbitmapWallPaper
);
143 for (y
= 0; y
< rect
.bottom
; y
+= bitmapSize
.cy
)
144 for (x
= 0; x
< rect
.right
; x
+= bitmapSize
.cx
)
145 BitBlt( hdc
, x
, y
, bitmapSize
.cx
, bitmapSize
.cy
, hMemDC
, 0, 0, SRCCOPY
);
149 x
= (rect
.left
+ rect
.right
- bitmapSize
.cx
) / 2;
150 y
= (rect
.top
+ rect
.bottom
- bitmapSize
.cy
) / 2;
153 BitBlt( hdc
, x
, y
, bitmapSize
.cx
, bitmapSize
.cy
, hMemDC
, 0, 0, SRCCOPY
);
161 /***********************************************************************
162 * SetDeskWallPaper (USER32.@)
164 * FIXME: is there a unicode version?
166 BOOL WINAPI
SetDeskWallPaper( LPCSTR filename
)
168 return SystemParametersInfoA( SPI_SETDESKWALLPAPER
, MAX_PATH
, (void *)filename
, SPIF_UPDATEINIFILE
);
172 /***********************************************************************
175 BOOL
update_wallpaper( const WCHAR
*wallpaper
, const WCHAR
*pattern
)
179 if (hbrushPattern
) DeleteObject( hbrushPattern
);
181 memset( pat
, 0, sizeof(pat
) );
185 WideCharToMultiByte( CP_ACP
, 0, pattern
, -1, buffer
, sizeof(buffer
), NULL
, NULL
);
186 if (sscanf( buffer
, " %d %d %d %d %d %d %d %d",
187 &pat
[0], &pat
[1], &pat
[2], &pat
[3],
188 &pat
[4], &pat
[5], &pat
[6], &pat
[7] ))
194 for (i
= 0; i
< 8; i
++) ptrn
[i
] = pat
[i
] & 0xffff;
195 hbitmap
= CreateBitmap( 8, 8, 1, 1, ptrn
);
196 hbrushPattern
= CreatePatternBrush( hbitmap
);
197 DeleteObject( hbitmap
);
200 init_wallpaper( wallpaper
);
201 RedrawWindow( GetDesktopWindow(), 0, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_NOCHILDREN
);