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243 lines
7.1 KiB
C
243 lines
7.1 KiB
C
/*
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* Desktop window class.
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*
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* Copyright 1994 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winnls.h"
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#include "controls.h"
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static HBRUSH hbrushPattern;
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static HBITMAP hbitmapWallPaper;
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static SIZE bitmapSize;
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static BOOL fTileWallPaper;
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/*********************************************************************
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* desktop class descriptor
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*/
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const struct builtin_class_descr DESKTOP_builtin_class =
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{
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(LPCWSTR)DESKTOP_CLASS_ATOM, /* name */
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CS_DBLCLKS, /* style */
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WINPROC_DESKTOP, /* proc */
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0, /* extra */
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IDC_ARROW, /* cursor */
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(HBRUSH)(COLOR_BACKGROUND+1) /* brush */
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};
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/***********************************************************************
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* DESKTOP_LoadBitmap
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*
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* Load a bitmap from a file. Used by SetDeskWallPaper().
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*/
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static HBITMAP DESKTOP_LoadBitmap( HDC hdc, const char *filename )
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{
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BITMAPFILEHEADER *fileHeader;
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BITMAPINFO *bitmapInfo;
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HBITMAP hbitmap;
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HFILE file;
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LPSTR buffer;
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LONG size;
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/* Read all the file into memory */
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if ((file = _lopen( filename, OF_READ )) == HFILE_ERROR)
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{
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UINT len = GetWindowsDirectoryA( NULL, 0 );
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if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
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len + strlen(filename) + 2 )))
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return 0;
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GetWindowsDirectoryA( buffer, len + 1 );
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strcat( buffer, "\\" );
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strcat( buffer, filename );
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file = _lopen( buffer, OF_READ );
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HeapFree( GetProcessHeap(), 0, buffer );
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}
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if (file == HFILE_ERROR) return 0;
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size = _llseek( file, 0, 2 );
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if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
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{
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_lclose( file );
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return 0;
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}
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_llseek( file, 0, 0 );
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size = _lread( file, buffer, size );
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_lclose( file );
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fileHeader = (BITMAPFILEHEADER *)buffer;
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bitmapInfo = (BITMAPINFO *)(buffer + sizeof(BITMAPFILEHEADER));
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/* Check header content */
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if ((fileHeader->bfType != 0x4d42) || (size < fileHeader->bfSize))
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{
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HeapFree( GetProcessHeap(), 0, buffer );
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return 0;
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}
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hbitmap = CreateDIBitmap( hdc, &bitmapInfo->bmiHeader, CBM_INIT,
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buffer + fileHeader->bfOffBits,
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bitmapInfo, DIB_RGB_COLORS );
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HeapFree( GetProcessHeap(), 0, buffer );
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return hbitmap;
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}
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/***********************************************************************
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* DesktopWndProc
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*/
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LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
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{
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if (message == WM_NCCREATE) return TRUE;
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return 0; /* all other messages are ignored */
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}
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/***********************************************************************
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* PaintDesktop (USER32.@)
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*
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*/
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BOOL WINAPI PaintDesktop(HDC hdc)
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{
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HWND hwnd = GetDesktopWindow();
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/* check for an owning thread; otherwise don't paint anything (non-desktop mode) */
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if (GetWindowThreadProcessId( hwnd, NULL ))
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{
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RECT rect;
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GetClientRect( hwnd, &rect );
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/* Paint desktop pattern (only if wall paper does not cover everything) */
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if (!hbitmapWallPaper ||
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(!fTileWallPaper && ((bitmapSize.cx < rect.right) || (bitmapSize.cy < rect.bottom))))
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{
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HBRUSH brush = hbrushPattern;
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if (!brush) brush = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND );
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/* Set colors in case pattern is a monochrome bitmap */
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SetBkColor( hdc, RGB(0,0,0) );
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SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) );
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FillRect( hdc, &rect, brush );
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}
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/* Paint wall paper */
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if (hbitmapWallPaper)
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{
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INT x, y;
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HDC hMemDC = CreateCompatibleDC( hdc );
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SelectObject( hMemDC, hbitmapWallPaper );
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if (fTileWallPaper)
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{
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for (y = 0; y < rect.bottom; y += bitmapSize.cy)
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for (x = 0; x < rect.right; x += bitmapSize.cx)
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BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
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}
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else
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{
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x = (rect.left + rect.right - bitmapSize.cx) / 2;
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y = (rect.top + rect.bottom - bitmapSize.cy) / 2;
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if (x < 0) x = 0;
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if (y < 0) y = 0;
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BitBlt( hdc, x, y, bitmapSize.cx, bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
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}
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DeleteDC( hMemDC );
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}
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}
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return TRUE;
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}
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/***********************************************************************
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* SetDeskWallPaper (USER32.@)
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*
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* FIXME: is there a unicode version?
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*/
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BOOL WINAPI SetDeskWallPaper( LPCSTR filename )
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{
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HBITMAP hbitmap;
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HDC hdc;
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char buffer[256];
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if (filename == (LPSTR)-1)
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{
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GetProfileStringA( "desktop", "WallPaper", "(None)", buffer, 256 );
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filename = buffer;
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}
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hdc = GetDC( 0 );
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hbitmap = DESKTOP_LoadBitmap( hdc, filename );
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ReleaseDC( 0, hdc );
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if (hbitmapWallPaper) DeleteObject( hbitmapWallPaper );
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hbitmapWallPaper = hbitmap;
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fTileWallPaper = GetProfileIntA( "desktop", "TileWallPaper", 0 );
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if (hbitmap)
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{
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BITMAP bmp;
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GetObjectA( hbitmap, sizeof(bmp), &bmp );
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bitmapSize.cx = (bmp.bmWidth != 0) ? bmp.bmWidth : 1;
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bitmapSize.cy = (bmp.bmHeight != 0) ? bmp.bmHeight : 1;
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}
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return TRUE;
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}
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/***********************************************************************
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* DESKTOP_SetPattern
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*
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* Set the desktop pattern.
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*/
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BOOL DESKTOP_SetPattern( LPCWSTR pattern )
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{
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int pat[8];
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if (hbrushPattern) DeleteObject( hbrushPattern );
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hbrushPattern = 0;
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memset( pat, 0, sizeof(pat) );
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if (pattern)
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{
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char buffer[64];
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WideCharToMultiByte( CP_ACP, 0, pattern, -1, buffer, sizeof(buffer), NULL, NULL );
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if (sscanf( buffer, " %d %d %d %d %d %d %d %d",
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&pat[0], &pat[1], &pat[2], &pat[3],
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&pat[4], &pat[5], &pat[6], &pat[7] ))
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{
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WORD pattern[8];
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HBITMAP hbitmap;
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int i;
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for (i = 0; i < 8; i++) pattern[i] = pat[i] & 0xffff;
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hbitmap = CreateBitmap( 8, 8, 1, 1, pattern );
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hbrushPattern = CreatePatternBrush( hbitmap );
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DeleteObject( hbitmap );
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}
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}
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return TRUE;
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}
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