controls/desktop.c

   1 /*
   2  * Desktop window class.
   3  *
   4  * Copyright 1994 Alexandre Julliard
   5  */
   6
   7 #include "x11drv.h"
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 #include "desktop.h"
  14 #include "windef.h"
  15 #include "heap.h"
  16 #include "monitor.h"
  17 #include "win.h"
  18 #include "wine/winuser16.h"
  19
  20 /***********************************************************************
  21  *              DESKTOP_GetScreenWidth
  22  *
  23  * Return the width of the screen associated to the current desktop.
  24  */
  25 int DESKTOP_GetScreenWidth()
  26 {
  27     int retvalue;
  28   DESKTOP *pDesktop = (DESKTOP *) WIN_GetDesktop()->wExtra;
  29     retvalue = MONITOR_GetWidth(pDesktop->pPrimaryMonitor);
  30     WIN_ReleaseDesktop();
  31     return retvalue;
  32
  33 }
  34
  35 /***********************************************************************
  36  *              DESKTOP_GetScreenHeight
  37  *
  38  * Return the height of the screen associated to the current desktop.
  39  */
  40 int DESKTOP_GetScreenHeight()
  41 {
  42     int retvalue;
  43   DESKTOP *pDesktop = (DESKTOP *) WIN_GetDesktop()->wExtra;
  44     retvalue = MONITOR_GetHeight(pDesktop->pPrimaryMonitor);
  45     WIN_ReleaseDesktop();
  46     return retvalue;
  47
  48 }
  49
  50 /***********************************************************************
  51  *              DESKTOP_GetScreenDepth
  52  *
  53  * Return the depth of the screen associated to the current desktop.
  54  */
  55 int DESKTOP_GetScreenDepth()
  56 {
  57     int retvalue;
  58   DESKTOP *pDesktop = (DESKTOP *) WIN_GetDesktop()->wExtra;
  59     retvalue = MONITOR_GetDepth(pDesktop->pPrimaryMonitor);
  60     WIN_ReleaseDesktop();
  61     return retvalue;
  62
  63 }
  64
  65 /***********************************************************************
  66  *           DESKTOP_LoadBitmap
  67  *
  68  * Load a bitmap from a file. Used by SetDeskWallPaper().
  69  */
  70 static HBITMAP DESKTOP_LoadBitmap( HDC hdc, const char *filename )
  71 {
  72     BITMAPFILEHEADER *fileHeader;
  73     BITMAPINFO *bitmapInfo;
  74     HBITMAP hbitmap;
  75     HFILE file;
  76     LPSTR buffer;
  77     LONG size;
  78
  79     /* Read all the file into memory */
  80
  81     if ((file = _lopen( filename, OF_READ )) == HFILE_ERROR)
  82     {
  83         UINT len = GetWindowsDirectoryA( NULL, 0 );
  84         if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
  85                                   len + strlen(filename) + 2 )))
  86             return 0;
  87         GetWindowsDirectoryA( buffer, len + 1 );
  88         strcat( buffer, "\\" );
  89         strcat( buffer, filename );
  90         file = _lopen( buffer, OF_READ );
  91         HeapFree( GetProcessHeap(), 0, buffer );
  92     }
  93     if (file == HFILE_ERROR) return 0;
  94     size = _llseek( file, 0, 2 );
  95     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
  96     {
  97         _lclose( file );
  98         return 0;
  99     }
 100     _llseek( file, 0, 0 );
 101     size = _lread( file, buffer, size );
 102     _lclose( file );
 103     fileHeader = (BITMAPFILEHEADER *)buffer;
 104     bitmapInfo = (BITMAPINFO *)(buffer + sizeof(BITMAPFILEHEADER));
 105
 106       /* Check header content */
 107     if ((fileHeader->bfType != 0x4d42) || (size < fileHeader->bfSize))
 108     {
 109         HeapFree( GetProcessHeap(), 0, buffer );
 110         return 0;
 111     }
 112     hbitmap = CreateDIBitmap( hdc, &bitmapInfo->bmiHeader, CBM_INIT,
 113                                 buffer + fileHeader->bfOffBits,
 114                                 bitmapInfo, DIB_RGB_COLORS );
 115     HeapFree( GetProcessHeap(), 0, buffer );
 116     return hbitmap;
 117 }
 118
 119
 120 /***********************************************************************
 121  *           DESKTOP_DoEraseBkgnd
 122  *
 123  * Handle the WM_ERASEBKGND message.
 124  */
 125 static LRESULT DESKTOP_DoEraseBkgnd( HWND hwnd, HDC hdc,
 126                                      DESKTOP *desktopPtr )
 127 {
 128     RECT rect;
 129     WND*   Wnd = WIN_FindWndPtr( hwnd );
 130
 131     if (Wnd->hrgnUpdate > 1) DeleteObject( Wnd->hrgnUpdate );
 132     Wnd->hrgnUpdate = 0;
 133
 134     WIN_ReleaseWndPtr(Wnd);
 135
 136     GetClientRect( hwnd, &rect );
 137
 138     /* Paint desktop pattern (only if wall paper does not cover everything) */
 139
 140     if (!desktopPtr->hbitmapWallPaper ||
 141         (!desktopPtr->fTileWallPaper && ((desktopPtr->bitmapSize.cx < rect.right) ||
 142          (desktopPtr->bitmapSize.cy < rect.bottom))))
 143     {
 144           /* Set colors in case pattern is a monochrome bitmap */
 145         SetBkColor( hdc, RGB(0,0,0) );
 146         SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) );
 147         FillRect( hdc, &rect, desktopPtr->hbrushPattern );
 148     }
 149
 150       /* Paint wall paper */
 151
 152     if (desktopPtr->hbitmapWallPaper)
 153     {
 154         INT x, y;
 155         HDC hMemDC = CreateCompatibleDC( hdc );
 156
 157         SelectObject( hMemDC, desktopPtr->hbitmapWallPaper );
 158
 159         if (desktopPtr->fTileWallPaper)
 160         {
 161             for (y = 0; y < rect.bottom; y += desktopPtr->bitmapSize.cy)
 162                 for (x = 0; x < rect.right; x += desktopPtr->bitmapSize.cx)
 163                     BitBlt( hdc, x, y, desktopPtr->bitmapSize.cx,
 164                               desktopPtr->bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
 165         }
 166         else
 167         {
 168             x = (rect.left + rect.right - desktopPtr->bitmapSize.cx) / 2;
 169             y = (rect.top + rect.bottom - desktopPtr->bitmapSize.cy) / 2;
 170             if (x < 0) x = 0;
 171             if (y < 0) y = 0;
 172             BitBlt( hdc, x, y, desktopPtr->bitmapSize.cx,
 173                       desktopPtr->bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
 174         }
 175         DeleteDC( hMemDC );
 176     }
 177
 178     return 1;
 179 }
 180
 181
 182 /***********************************************************************
 183  *           DesktopWndProc
 184  *
 185  * Window procedure for the desktop window.
 186  */
 187 LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message,
 188                                WPARAM wParam, LPARAM lParam )
 189 {
 190     LRESULT retvalue;
 191     WND *wndPtr = WIN_FindWndPtr( hwnd );
 192     DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
 193
 194       /* Most messages are ignored (we DON'T call DefWindowProc) */
 195
 196     switch(message)
 197     {
 198         /* Warning: this message is sent directly by                     */
 199         /* WIN_CreateDesktopWindow() and does not contain a valid lParam */
 200     case WM_NCCREATE:
 201         desktopPtr->hbrushPattern = 0;
 202         desktopPtr->hbitmapWallPaper = 0;
 203         SetDeskPattern();
 204         SetDeskWallPaper( (LPSTR)-1 );
 205         retvalue = 1;
 206         goto END;
 207
 208     case WM_ERASEBKGND:
 209         if (X11DRV_WND_GetXRootWindow(wndPtr) ==
 210             DefaultRootWindow(display))
 211         {
 212             retvalue = 1;
 213             goto END;
 214         }
 215         retvalue = DESKTOP_DoEraseBkgnd( hwnd, (HDC)wParam, desktopPtr );
 216         goto END;
 217
 218     case WM_SYSCOMMAND:
 219         if ((wParam & 0xfff0) != SC_CLOSE)
 220         {
 221             retvalue = 0;
 222             goto END;
 223         }
 224         ExitWindows16( 0, 0 );
 225
 226     case WM_SETCURSOR:
 227         retvalue = (LRESULT)SetCursor16( LoadCursor16( 0, IDC_ARROW16 ) );
 228         goto END;
 229     }
 230
 231     retvalue = 0;
 232 END:
 233     WIN_ReleaseWndPtr(wndPtr);
 234     return retvalue;
 235 }
 236
 237 /***********************************************************************
 238  *           PaintDesktop   (USER32.415)
 239  *
 240  */
 241 BOOL WINAPI PaintDesktop(HDC hdc)
 242 {
 243     BOOL retvalue;
 244     HWND hwnd = GetDesktopWindow();
 245     WND *wndPtr = WIN_FindWndPtr( hwnd );
 246     DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
 247     retvalue = DESKTOP_DoEraseBkgnd( hwnd, hdc, desktopPtr );
 248     WIN_ReleaseWndPtr(wndPtr);
 249     return retvalue;
 250
 251 }
 252
 253 /***********************************************************************
 254  *           SetDeskPattern   (USER.279)
 255  */
 256 BOOL16 WINAPI SetDeskPattern(void)
 257 {
 258     char buffer[100];
 259     GetProfileStringA( "desktop", "Pattern", "(None)", buffer, 100 );
 260     return DESKTOP_SetPattern( buffer );
 261 }
 262
 263
 264 /***********************************************************************
 265  *           SetDeskWallPaper16   (USER.285)
 266  */
 267 BOOL16 WINAPI SetDeskWallPaper16( LPCSTR filename )
 268 {
 269     return SetDeskWallPaper( filename );
 270 }
 271
 272
 273 /***********************************************************************
 274  *           SetDeskWallPaper32   (USER32.475)
 275  *
 276  * FIXME: is there a unicode version?
 277  */
 278 BOOL WINAPI SetDeskWallPaper( LPCSTR filename )
 279 {
 280     HBITMAP hbitmap;
 281     HDC hdc;
 282     char buffer[256];
 283     WND *wndPtr = WIN_GetDesktop();
 284     DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
 285
 286     if (filename == (LPSTR)-1)
 287     {
 288         GetProfileStringA( "desktop", "WallPaper", "(None)", buffer, 256 );
 289         filename = buffer;
 290     }
 291     hdc = GetDC( 0 );
 292     hbitmap = DESKTOP_LoadBitmap( hdc, filename );
 293     ReleaseDC( 0, hdc );
 294     if (desktopPtr->hbitmapWallPaper) DeleteObject( desktopPtr->hbitmapWallPaper );
 295     desktopPtr->hbitmapWallPaper = hbitmap;
 296     desktopPtr->fTileWallPaper = GetProfileIntA( "desktop", "TileWallPaper", 0 );
 297     if (hbitmap)
 298     {
 299         BITMAP bmp;
 300         GetObjectA( hbitmap, sizeof(bmp), &bmp );
 301         desktopPtr->bitmapSize.cx = (bmp.bmWidth != 0) ? bmp.bmWidth : 1;
 302         desktopPtr->bitmapSize.cy = (bmp.bmHeight != 0) ? bmp.bmHeight : 1;
 303     }
 304     WIN_ReleaseDesktop();
 305     return TRUE;
 306 }
 307
 308
 309 /***********************************************************************
 310  *           DESKTOP_SetPattern
 311  *
 312  * Set the desktop pattern.
 313  */
 314 BOOL DESKTOP_SetPattern( LPCSTR pattern )
 315 {
 316     WND *wndPtr = WIN_GetDesktop();
 317     DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
 318     int pat[8];
 319
 320     if (desktopPtr->hbrushPattern) DeleteObject( desktopPtr->hbrushPattern );
 321     memset( pat, 0, sizeof(pat) );
 322     if (pattern && sscanf( pattern, " %d %d %d %d %d %d %d %d",
 323                            &pat[0], &pat[1], &pat[2], &pat[3],
 324                            &pat[4], &pat[5], &pat[6], &pat[7] ))
 325     {
 326         WORD pattern[8];
 327         HBITMAP hbitmap;
 328         int i;
 329
 330         for (i = 0; i < 8; i++) pattern[i] = pat[i] & 0xffff;
 331         hbitmap = CreateBitmap( 8, 8, 1, 1, (LPSTR)pattern );
 332         desktopPtr->hbrushPattern = CreatePatternBrush( hbitmap );
 333         DeleteObject( hbitmap );
 334     }
 335     else desktopPtr->hbrushPattern = CreateSolidBrush( GetSysColor(COLOR_BACKGROUND) );
 336     WIN_ReleaseDesktop();
 337     return TRUE;
 338 }
 339