/* * Desktop window class. * * Copyright 1994 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 <stdarg.h> #include <stdio.h> #include <string.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "winnls.h" #include "controls.h" static HBRUSH hbrushPattern; static HBITMAP hbitmapWallPaper; static SIZE bitmapSize; static BOOL fTileWallPaper; /********************************************************************* * desktop class descriptor */ const struct builtin_class_descr DESKTOP_builtin_class = { (LPCWSTR)DESKTOP_CLASS_ATOM, /* name */ CS_DBLCLKS, /* style */ WINPROC_DESKTOP, /* proc */ 0, /* extra */ IDC_ARROW, /* cursor */ (HBRUSH)(COLOR_BACKGROUND+1) /* brush */ }; /*********************************************************************** * DESKTOP_LoadBitmap */ static HBITMAP DESKTOP_LoadBitmap( const WCHAR *filename ) { HBITMAP hbitmap; if (!filename[0]) return 0; hbitmap = LoadImageW( 0, filename, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_LOADFROMFILE ); if (!hbitmap) { WCHAR buffer[MAX_PATH]; UINT len = GetWindowsDirectoryW( buffer, MAX_PATH - 2 ); if (buffer[len - 1] != '\\') buffer[len++] = '\\'; lstrcpynW( buffer + len, filename, MAX_PATH - len ); hbitmap = LoadImageW( 0, buffer, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_LOADFROMFILE ); } return hbitmap; } /*********************************************************************** * init_wallpaper */ static void init_wallpaper( const WCHAR *wallpaper ) { HBITMAP hbitmap = DESKTOP_LoadBitmap( wallpaper ); if (hbitmapWallPaper) DeleteObject( hbitmapWallPaper ); hbitmapWallPaper = hbitmap; if (hbitmap) { BITMAP bmp; GetObjectA( hbitmap, sizeof(bmp), &bmp ); bitmapSize.cx = (bmp.bmWidth != 0) ? bmp.bmWidth : 1; bitmapSize.cy = (bmp.bmHeight != 0) ? bmp.bmHeight : 1; fTileWallPaper = GetProfileIntA( "desktop", "TileWallPaper", 0 ); } } /*********************************************************************** * DesktopWndProc */ LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam ) { if (message == WM_NCCREATE) return TRUE; return 0; /* all other messages are ignored */ } /*********************************************************************** * PaintDesktop (USER32.@) * */ BOOL WINAPI PaintDesktop(HDC hdc) { HWND hwnd = GetDesktopWindow(); /* check for an owning thread; otherwise don't paint anything (non-desktop mode) */ if (GetWindowThreadProcessId( hwnd, NULL )) { RECT rect; GetClientRect( hwnd, &rect ); /* Paint desktop pattern (only if wall paper does not cover everything) */ if (!hbitmapWallPaper || (!fTileWallPaper && ((bitmapSize.cx < rect.right) || (bitmapSize.cy < rect.bottom)))) { HBRUSH brush = hbrushPattern; if (!brush) brush = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND ); /* Set colors in case pattern is a monochrome bitmap */ SetBkColor( hdc, RGB(0,0,0) ); SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) ); FillRect( hdc, &rect, brush ); } /* Paint wall paper */ if (hbitmapWallPaper) { INT x, y; HDC hMemDC = CreateCompatibleDC( hdc ); SelectObject( hMemDC, hbitmapWallPaper ); if (fTileWallPaper) { for (y = 0; y < rect.bottom; y += bitmapSize.cy) for (x = 0; x < rect.right; x += bitmapSize.cx) BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY ); } else { x = (rect.left + rect.right - bitmapSize.cx) / 2; y = (rect.top + rect.bottom - bitmapSize.cy) / 2; if (x < 0) x = 0; if (y < 0) y = 0; BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY ); } DeleteDC( hMemDC ); } } return TRUE; } /*********************************************************************** * SetDeskWallPaper (USER32.@) * * FIXME: is there a unicode version? */ BOOL WINAPI SetDeskWallPaper( LPCSTR filename ) { return SystemParametersInfoA( SPI_SETDESKWALLPAPER, MAX_PATH, (void *)filename, SPIF_UPDATEINIFILE ); } /*********************************************************************** * update_wallpaper */ BOOL update_wallpaper( const WCHAR *wallpaper, const WCHAR *pattern ) { int pat[8]; if (hbrushPattern) DeleteObject( hbrushPattern ); hbrushPattern = 0; memset( pat, 0, sizeof(pat) ); if (pattern) { char buffer[64]; WideCharToMultiByte( CP_ACP, 0, pattern, -1, buffer, sizeof(buffer), NULL, NULL ); if (sscanf( buffer, " %d %d %d %d %d %d %d %d", &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], &pat[7] )) { WORD ptrn[8]; HBITMAP hbitmap; int i; for (i = 0; i < 8; i++) ptrn[i] = pat[i] & 0xffff; hbitmap = CreateBitmap( 8, 8, 1, 1, ptrn ); hbrushPattern = CreatePatternBrush( hbitmap ); DeleteObject( hbitmap ); } } init_wallpaper( wallpaper ); RedrawWindow( GetDesktopWindow(), 0, 0, RDW_INVALIDATE | RDW_ERASE | RDW_NOCHILDREN ); return TRUE; }