2 * Desktop window class.
4 * Copyright 1994 Alexandre Julliard
15 #include "wine/winuser16.h"
17 static HBRUSH hbrushPattern
;
18 static HBITMAP hbitmapWallPaper
;
19 static SIZE bitmapSize
;
20 static BOOL fTileWallPaper
;
22 static LRESULT WINAPI
DesktopWndProc( HWND hwnd
, UINT message
, WPARAM wParam
, LPARAM lParam
);
25 /*********************************************************************
26 * desktop class descriptor
28 const struct builtin_class_descr DESKTOP_builtin_class
=
30 DESKTOP_CLASS_ATOM
, /* name */
31 CS_GLOBALCLASS
, /* style */
32 NULL
, /* procA (winproc is Unicode only) */
33 DesktopWndProc
, /* procW */
35 IDC_ARROWA
, /* cursor */
36 COLOR_BACKGROUND
+1 /* brush */
40 /***********************************************************************
43 * Load a bitmap from a file. Used by SetDeskWallPaper().
45 static HBITMAP
DESKTOP_LoadBitmap( HDC hdc
, const char *filename
)
47 BITMAPFILEHEADER
*fileHeader
;
48 BITMAPINFO
*bitmapInfo
;
54 /* Read all the file into memory */
56 if ((file
= _lopen( filename
, OF_READ
)) == HFILE_ERROR
)
58 UINT len
= GetWindowsDirectoryA( NULL
, 0 );
59 if (!(buffer
= HeapAlloc( GetProcessHeap(), 0,
60 len
+ strlen(filename
) + 2 )))
62 GetWindowsDirectoryA( buffer
, len
+ 1 );
63 strcat( buffer
, "\\" );
64 strcat( buffer
, filename
);
65 file
= _lopen( buffer
, OF_READ
);
66 HeapFree( GetProcessHeap(), 0, buffer
);
68 if (file
== HFILE_ERROR
) return 0;
69 size
= _llseek( file
, 0, 2 );
70 if (!(buffer
= HeapAlloc( GetProcessHeap(), 0, size
)))
75 _llseek( file
, 0, 0 );
76 size
= _lread( file
, buffer
, size
);
78 fileHeader
= (BITMAPFILEHEADER
*)buffer
;
79 bitmapInfo
= (BITMAPINFO
*)(buffer
+ sizeof(BITMAPFILEHEADER
));
81 /* Check header content */
82 if ((fileHeader
->bfType
!= 0x4d42) || (size
< fileHeader
->bfSize
))
84 HeapFree( GetProcessHeap(), 0, buffer
);
87 hbitmap
= CreateDIBitmap( hdc
, &bitmapInfo
->bmiHeader
, CBM_INIT
,
88 buffer
+ fileHeader
->bfOffBits
,
89 bitmapInfo
, DIB_RGB_COLORS
);
90 HeapFree( GetProcessHeap(), 0, buffer
);
96 /***********************************************************************
99 static LRESULT WINAPI
DesktopWndProc( HWND hwnd
, UINT message
, WPARAM wParam
, LPARAM lParam
)
101 LRESULT retvalue
= 0;
103 if (message
== WM_NCCREATE
)
106 hbitmapWallPaper
= 0;
108 SetDeskWallPaper( (LPSTR
)-1 );
111 /* all other messages are ignored */
115 /***********************************************************************
116 * PaintDesktop (USER32.@)
119 BOOL WINAPI
PaintDesktop(HDC hdc
)
121 HWND hwnd
= GetDesktopWindow();
123 /* check for an owning thread; otherwise don't paint anything (non-desktop mode) */
124 if (GetWindowThreadProcessId( hwnd
, NULL
))
128 GetClientRect( hwnd
, &rect
);
130 /* Paint desktop pattern (only if wall paper does not cover everything) */
132 if (!hbitmapWallPaper
||
133 (!fTileWallPaper
&& ((bitmapSize
.cx
< rect
.right
) || (bitmapSize
.cy
< rect
.bottom
))))
135 HBRUSH brush
= hbrushPattern
;
136 if (!brush
) brush
= GetClassLongA( hwnd
, GCL_HBRBACKGROUND
);
137 /* Set colors in case pattern is a monochrome bitmap */
138 SetBkColor( hdc
, RGB(0,0,0) );
139 SetTextColor( hdc
, GetSysColor(COLOR_BACKGROUND
) );
140 FillRect( hdc
, &rect
, brush
);
143 /* Paint wall paper */
145 if (hbitmapWallPaper
)
148 HDC hMemDC
= CreateCompatibleDC( hdc
);
150 SelectObject( hMemDC
, hbitmapWallPaper
);
154 for (y
= 0; y
< rect
.bottom
; y
+= bitmapSize
.cy
)
155 for (x
= 0; x
< rect
.right
; x
+= bitmapSize
.cx
)
156 BitBlt( hdc
, x
, y
, bitmapSize
.cx
, bitmapSize
.cy
, hMemDC
, 0, 0, SRCCOPY
);
160 x
= (rect
.left
+ rect
.right
- bitmapSize
.cx
) / 2;
161 y
= (rect
.top
+ rect
.bottom
- bitmapSize
.cy
) / 2;
164 BitBlt( hdc
, x
, y
, bitmapSize
.cx
, bitmapSize
.cy
, hMemDC
, 0, 0, SRCCOPY
);
172 /***********************************************************************
173 * OldSetDeskPattern (USER.279)
175 BOOL16 WINAPI
SetDeskPattern(void)
178 GetProfileStringA( "desktop", "Pattern", "(None)", buffer
, 100 );
179 return DESKTOP_SetPattern( buffer
);
183 /***********************************************************************
184 * SetDeskWallPaper (USER.285)
186 BOOL16 WINAPI
SetDeskWallPaper16( LPCSTR filename
)
188 return SetDeskWallPaper( filename
);
192 /***********************************************************************
193 * SetDeskWallPaper (USER32.@)
195 * FIXME: is there a unicode version?
197 BOOL WINAPI
SetDeskWallPaper( LPCSTR filename
)
203 if (filename
== (LPSTR
)-1)
205 GetProfileStringA( "desktop", "WallPaper", "(None)", buffer
, 256 );
209 hbitmap
= DESKTOP_LoadBitmap( hdc
, filename
);
211 if (hbitmapWallPaper
) DeleteObject( hbitmapWallPaper
);
212 hbitmapWallPaper
= hbitmap
;
213 fTileWallPaper
= GetProfileIntA( "desktop", "TileWallPaper", 0 );
217 GetObjectA( hbitmap
, sizeof(bmp
), &bmp
);
218 bitmapSize
.cx
= (bmp
.bmWidth
!= 0) ? bmp
.bmWidth
: 1;
219 bitmapSize
.cy
= (bmp
.bmHeight
!= 0) ? bmp
.bmHeight
: 1;
225 /***********************************************************************
228 * Set the desktop pattern.
230 BOOL
DESKTOP_SetPattern( LPCSTR pattern
)
234 if (hbrushPattern
) DeleteObject( hbrushPattern
);
235 memset( pat
, 0, sizeof(pat
) );
236 if (pattern
&& sscanf( pattern
, " %d %d %d %d %d %d %d %d",
237 &pat
[0], &pat
[1], &pat
[2], &pat
[3],
238 &pat
[4], &pat
[5], &pat
[6], &pat
[7] ))
244 for (i
= 0; i
< 8; i
++) pattern
[i
] = pat
[i
] & 0xffff;
245 hbitmap
= CreateBitmap( 8, 8, 1, 1, (LPSTR
)pattern
);
246 hbrushPattern
= CreatePatternBrush( hbitmap
);
247 DeleteObject( hbitmap
);
249 else hbrushPattern
= 0;