windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wine/winuser16.h"
  31 #include "wownt32.h"
  32 #include "wine/unicode.h"
  33 #include "wine/server.h"
  34 #include "user.h"
  35 #include "win.h"
  36 #include "message.h"
  37 #include "dce.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(win);
  41 WINE_DECLARE_DEBUG_CHANNEL(nonclient);
  42
  43 HPALETTE (WINAPI *pfnGDISelectPalette)(HDC hdc, HPALETTE hpal, WORD bkgnd ) = NULL;
  44 UINT (WINAPI *pfnGDIRealizePalette)(HDC hdc) = NULL;
  45
  46
  47 /***********************************************************************
  48  *              SelectPalette (Not a Windows API)
  49  */
  50 HPALETTE WINAPI SelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
  51 {
  52     WORD wBkgPalette = 1;
  53
  54     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
  55     {
  56         HWND hwnd = WindowFromDC( hDC );
  57         if (hwnd)
  58         {
  59             HWND hForeground = GetForegroundWindow();
  60             /* set primary palette if it's related to current active */
  61             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
  62         }
  63     }
  64     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
  65 }
  66
  67
  68 /***********************************************************************
  69  *              UserRealizePalette (USER32.@)
  70  */
  71 UINT WINAPI UserRealizePalette( HDC hDC )
  72 {
  73     UINT realized = pfnGDIRealizePalette( hDC );
  74
  75     /* do not send anything if no colors were changed */
  76     if (realized && IsDCCurrentPalette16( HDC_16(hDC) ))
  77     {
  78         /* send palette change notification */
  79         HWND hWnd = WindowFromDC( hDC );
  80         if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
  81                                        SMTO_ABORTIFHUNG, 2000, NULL );
  82     }
  83     return realized;
  84 }