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
34 #include "wine/winuser16.h"
36 static HBRUSH hbrushPattern;
37 static HBITMAP hbitmapWallPaper;
38 static SIZE bitmapSize;
39 static BOOL fTileWallPaper;
41 static LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
44 /*********************************************************************
45 * desktop class descriptor
47 const struct builtin_class_descr DESKTOP_builtin_class =
49 DESKTOP_CLASS_ATOM, /* name */
50 CS_DBLCLKS, /* style */
51 NULL, /* procA (winproc is Unicode only) */
52 DesktopWndProc, /* procW */
54 IDC_ARROW, /* cursor */
55 (HBRUSH)(COLOR_BACKGROUND+1) /* brush */
59 /***********************************************************************
62 * Load a bitmap from a file. Used by SetDeskWallPaper().
64 static HBITMAP DESKTOP_LoadBitmap( HDC hdc, const char *filename )
66 BITMAPFILEHEADER *fileHeader;
67 BITMAPINFO *bitmapInfo;
73 /* Read all the file into memory */
75 if ((file = _lopen( filename, OF_READ )) == HFILE_ERROR)
77 UINT len = GetWindowsDirectoryA( NULL, 0 );
78 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
79 len + strlen(filename) + 2 )))
81 GetWindowsDirectoryA( buffer, len + 1 );
82 strcat( buffer, "\\" );
83 strcat( buffer, filename );
84 file = _lopen( buffer, OF_READ );
85 HeapFree( GetProcessHeap(), 0, buffer );
87 if (file == HFILE_ERROR) return 0;
88 size = _llseek( file, 0, 2 );
89 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
94 _llseek( file, 0, 0 );
95 size = _lread( file, buffer, size );
97 fileHeader = (BITMAPFILEHEADER *)buffer;
98 bitmapInfo = (BITMAPINFO *)(buffer + sizeof(BITMAPFILEHEADER));
100 /* Check header content */
101 if ((fileHeader->bfType != 0x4d42) || (size < fileHeader->bfSize))
103 HeapFree( GetProcessHeap(), 0, buffer );
106 hbitmap = CreateDIBitmap( hdc, &bitmapInfo->bmiHeader, CBM_INIT,
107 buffer + fileHeader->bfOffBits,
108 bitmapInfo, DIB_RGB_COLORS );
109 HeapFree( GetProcessHeap(), 0, buffer );
115 /***********************************************************************
118 static LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
120 if (message == WM_NCCREATE) return TRUE;
121 return 0; /* all other messages are ignored */
124 /***********************************************************************
125 * PaintDesktop (USER32.@)
128 BOOL WINAPI PaintDesktop(HDC hdc)
130 HWND hwnd = GetDesktopWindow();
132 /* check for an owning thread; otherwise don't paint anything (non-desktop mode) */
133 if (GetWindowThreadProcessId( hwnd, NULL ))
137 GetClientRect( hwnd, &rect );
139 /* Paint desktop pattern (only if wall paper does not cover everything) */
141 if (!hbitmapWallPaper ||
142 (!fTileWallPaper && ((bitmapSize.cx < rect.right) || (bitmapSize.cy < rect.bottom))))
144 HBRUSH brush = hbrushPattern;
145 if (!brush) brush = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND );
146 /* Set colors in case pattern is a monochrome bitmap */
147 SetBkColor( hdc, RGB(0,0,0) );
148 SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) );
149 FillRect( hdc, &rect, brush );
152 /* Paint wall paper */
154 if (hbitmapWallPaper)
157 HDC hMemDC = CreateCompatibleDC( hdc );
159 SelectObject( hMemDC, hbitmapWallPaper );
163 for (y = 0; y < rect.bottom; y += bitmapSize.cy)
164 for (x = 0; x < rect.right; x += bitmapSize.cx)
165 BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
169 x = (rect.left + rect.right - bitmapSize.cx) / 2;
170 y = (rect.top + rect.bottom - bitmapSize.cy) / 2;
173 BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
181 /***********************************************************************
182 * OldSetDeskPattern (USER.279)
184 BOOL16 WINAPI SetDeskPattern(void)
186 return SystemParametersInfoA( SPI_SETDESKPATTERN, -1, NULL, FALSE );
190 /***********************************************************************
191 * SetDeskWallPaper (USER.285)
193 BOOL16 WINAPI SetDeskWallPaper16( LPCSTR filename )
195 return SetDeskWallPaper( filename );
199 /***********************************************************************
200 * SetDeskWallPaper (USER32.@)
202 * FIXME: is there a unicode version?
204 BOOL WINAPI SetDeskWallPaper( LPCSTR filename )
210 if (filename == (LPSTR)-1)
212 GetProfileStringA( "desktop", "WallPaper", "(None)", buffer, 256 );
216 hbitmap = DESKTOP_LoadBitmap( hdc, filename );
218 if (hbitmapWallPaper) DeleteObject( hbitmapWallPaper );
219 hbitmapWallPaper = hbitmap;
220 fTileWallPaper = GetProfileIntA( "desktop", "TileWallPaper", 0 );
224 GetObjectA( hbitmap, sizeof(bmp), &bmp );
225 bitmapSize.cx = (bmp.bmWidth != 0) ? bmp.bmWidth : 1;
226 bitmapSize.cy = (bmp.bmHeight != 0) ? bmp.bmHeight : 1;
232 /***********************************************************************
235 * Set the desktop pattern.
237 BOOL DESKTOP_SetPattern( LPCWSTR pattern )
241 if (hbrushPattern) DeleteObject( hbrushPattern );
243 memset( pat, 0, sizeof(pat) );
247 WideCharToMultiByte( CP_ACP, 0, pattern, -1, buffer, sizeof(buffer), NULL, NULL );
248 if (sscanf( buffer, " %d %d %d %d %d %d %d %d",
249 &pat[0], &pat[1], &pat[2], &pat[3],
250 &pat[4], &pat[5], &pat[6], &pat[7] ))
256 for (i = 0; i < 8; i++) pattern[i] = pat[i] & 0xffff;
257 hbitmap = CreateBitmap( 8, 8, 1, 1, (LPSTR)pattern );
258 hbrushPattern = CreatePatternBrush( hbitmap );
259 DeleteObject( hbitmap );