controls/desktop.c

   1 /*
   2  * Desktop window class.
   3  *
   4  * Copyright 1994 Alexandre Julliard
   5  */
   6
   7 static char Copyright[] = "Copyright  Alexandre Julliard, 1994";
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include "win.h"
  12 #include "desktop.h"
  13
  14
  15 /***********************************************************************
  16  *           DESKTOP_DoEraseBkgnd
  17  *
  18  * Handle the WM_ERASEBKGND message.
  19  */
  20 static LONG DESKTOP_DoEraseBkgnd( HWND hwnd, HDC hdc, DESKTOPINFO *infoPtr )
  21 {
  22     RECT rect;
  23
  24       /* Set colors in case pattern is a monochrome bitmap */
  25     SetBkColor( hdc, RGB(0,0,0) );
  26     SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) );
  27     GetClientRect( hwnd, &rect );
  28     FillRect( hdc, &rect, infoPtr->hbrushPattern );
  29     return 1;
  30 }
  31
  32
  33 /***********************************************************************
  34  *           DesktopWndProc
  35  *
  36  * Window procedure for the desktop window.
  37  */
  38 LONG DesktopWndProc ( HWND hwnd, WORD message, WORD wParam, LONG lParam )
  39 {
  40     WND *wndPtr = WIN_FindWndPtr( hwnd );
  41     DESKTOPINFO *infoPtr = (DESKTOPINFO *)wndPtr->wExtra;
  42
  43       /* Most messages are ignored (we DON'T call DefWindowProc) */
  44
  45     switch(message)
  46     {
  47         /* Warning: this message is sent directly by                     */
  48         /* WIN_CreateDesktopWindow() and does not contain a valid lParam */
  49     case WM_NCCREATE:
  50         infoPtr->hbrushPattern = 0;
  51         infoPtr->hbitmapWallPaper = 0;
  52         SetDeskPattern();
  53         break;
  54
  55     case WM_ERASEBKGND:
  56         if (rootWindow == DefaultRootWindow(display)) return 1;
  57         return DESKTOP_DoEraseBkgnd( hwnd, (HDC)wParam, infoPtr );
  58     }
  59
  60     return 0;
  61 }
  62
  63
  64 /***********************************************************************
  65  *           SetDeskPattern   (USER.279)
  66  */
  67 BOOL SetDeskPattern()
  68 {
  69     char buffer[100];
  70     GetProfileString( "desktop", "Pattern", "(None)", buffer, 100 );
  71     return DESKTOP_SetPattern( buffer );
  72 }
  73
  74
  75 /***********************************************************************
  76  *           SetDeskWallPaper   (USER.285)
  77  */
  78 BOOL SetDeskWallPaper( LPSTR filename )
  79 {
  80     return TRUE;
  81 }
  82
  83
  84 /***********************************************************************
  85  *           DESKTOP_SetPattern
  86  *
  87  * Set the desktop pattern.
  88  */
  89 BOOL DESKTOP_SetPattern(char *pattern )
  90 {
  91     WND *wndPtr = WIN_FindWndPtr( GetDesktopWindow() );
  92     DESKTOPINFO *infoPtr = (DESKTOPINFO *)wndPtr->wExtra;
  93     int pat[8];
  94
  95     if (infoPtr->hbrushPattern) DeleteObject( infoPtr->hbrushPattern );
  96     memset( pat, 0, sizeof(pat) );
  97     if (pattern && sscanf( pattern, " %d %d %d %d %d %d %d %d",
  98                            &pat[0], &pat[1], &pat[2], &pat[3],
  99                            &pat[4], &pat[5], &pat[6], &pat[7] ))
 100     {
 101         WORD pattern[8];
 102         HBITMAP hbitmap;
 103         int i;
 104
 105         for (i = 0; i < 8; i++) pattern[i] = pat[i] & 0xffff;
 106         hbitmap = CreateBitmap( 8, 8, 1, 1, pattern );
 107         infoPtr->hbrushPattern = CreatePatternBrush( hbitmap );
 108         DeleteObject( hbitmap );
 109     }
 110     else infoPtr->hbrushPattern = CreateSolidBrush( GetSysColor(COLOR_BACKGROUND) );
 111     return TRUE;
 112 }
 113