windows/syscolor.c

   1 /*
   2  * Support for system colors
   3  *
   4  * Copyright  David W. Metcalfe, 1993
   5  * Copyright  Alexandre Julliard, 1994
   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 <assert.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wine/winbase16.h"
  31 #include "wine/winuser16.h"
  32 #include "winuser.h"
  33 #include "wownt32.h"
  34 #include "winreg.h"
  35 #include "winternl.h"
  36 #include "gdi.h" /* sic */
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(syscolor);
  40
  41 static const char * const DefSysColors[] =
  42 {
  43     "Scrollbar", "192 192 192",      /* COLOR_SCROLLBAR           */
  44     "Background", "0 128 128",       /* COLOR_BACKGROUND          */
  45     "ActiveTitle", "0 0 128",        /* COLOR_ACTIVECAPTION       */
  46     "InactiveTitle", "128 128 128",  /* COLOR_INACTIVECAPTION     */
  47     "Menu", "192 192 192",           /* COLOR_MENU                */
  48     "Window", "255 255 255",         /* COLOR_WINDOW              */
  49     "WindowFrame", "0 0 0",          /* COLOR_WINDOWFRAME         */
  50     "MenuText", "0 0 0",             /* COLOR_MENUTEXT            */
  51     "WindowText", "0 0 0",           /* COLOR_WINDOWTEXT          */
  52     "TitleText", "255 255 255",      /* COLOR_CAPTIONTEXT         */
  53     "ActiveBorder", "192 192 192",   /* COLOR_ACTIVEBORDER        */
  54     "InactiveBorder", "192 192 192", /* COLOR_INACTIVEBORDER      */
  55     "AppWorkSpace", "128 128 128",   /* COLOR_APPWORKSPACE        */
  56     "Hilight", "0 0 128",            /* COLOR_HIGHLIGHT           */
  57     "HilightText", "255 255 255",    /* COLOR_HIGHLIGHTTEXT       */
  58     "ButtonFace", "192 192 192",     /* COLOR_BTNFACE             */
  59     "ButtonShadow", "128 128 128",   /* COLOR_BTNSHADOW           */
  60     "GrayText", "128 128 128",       /* COLOR_GRAYTEXT            */
  61     "ButtonText", "0 0 0",           /* COLOR_BTNTEXT             */
  62     "InactiveTitleText", "192 192 192",/* COLOR_INACTIVECAPTIONTEXT */
  63     "ButtonHilight", "255 255 255",  /* COLOR_BTNHIGHLIGHT        */
  64     "ButtonDkShadow", "0 0 0",       /* COLOR_3DDKSHADOW          */
  65     "ButtonLight", "224 224 224",    /* COLOR_3DLIGHT             */
  66     "InfoText", "0 0 0",             /* COLOR_INFOTEXT            */
  67     "InfoWindow", "255 255 225",     /* COLOR_INFOBK              */
  68     "ButtonAlternateFace", "180 180 180",  /* COLOR_ALTERNATEBTNFACE */
  69     "HotTrackingColor", "0 0 255",         /* COLOR_HOTLIGHT */
  70     "GradientActiveTitle", "16 132 208",   /* COLOR_GRADIENTACTIVECAPTION */
  71     "GradientInactiveTitle", "181 181 181",/* COLOR_GRADIENTINACTIVECAPTION */
  72     "MenuHilight", "0 0 0",          /* COLOR_MENUHILIGHT         */
  73     "MenuBar", "192 192 192"         /* COLOR_MENUBAR             */
  74 };
  75
  76
  77 #define NUM_SYS_COLORS     (COLOR_MENUBAR+1)
  78
  79 static COLORREF SysColors[NUM_SYS_COLORS];
  80 static HBRUSH SysColorBrushes[NUM_SYS_COLORS];
  81 static HPEN   SysColorPens[NUM_SYS_COLORS];
  82
  83 static const WORD wPattern55AA[] =
  84     { 0x5555, 0xaaaa, 0x5555, 0xaaaa, 0x5555, 0xaaaa, 0x5555, 0xaaaa };
  85
  86 HBRUSH SYSCOLOR_55AABrush = 0;
  87
  88
  89 /*************************************************************************
  90  * SYSCOLOR_MakeObjectSystem
  91  *
  92  * OK, now for a very ugly hack.
  93  * USER somehow has to tell GDI that its system brushes and pens are
  94  * non-deletable.
  95  * We don't want to export a function from GDI doing this for us,
  96  * so we just do that ourselves by "wildly flipping some bits in memory".
  97  * For a description of the GDI object magics and their flags,
  98  * see "Undocumented Windows" (wrong about the OBJECT_NOSYSTEM flag, though).
  99  */
 100 static void SYSCOLOR_MakeObjectSystem( HGDIOBJ16 handle, BOOL set)
 101 {
 102     static WORD heap_sel = 0;
 103     LPWORD ptr;
 104
 105     if (!heap_sel) heap_sel = LoadLibrary16( "gdi" );
 106     if (heap_sel >= 32)
 107     {
 108         STACK16FRAME* stack16 = MapSL((SEGPTR)NtCurrentTeb()->WOW32Reserved);
 109         HANDLE16 oldDS = stack16->ds;
 110
 111         stack16->ds = heap_sel;
 112         ptr = MapSL(LocalLock16(handle));
 113
 114         /* touch the "system" bit of the wMagic field of a GDIOBJHDR */
 115         if (set)
 116             *ptr &= ~OBJECT_NOSYSTEM;
 117         else
 118             *ptr |= OBJECT_NOSYSTEM;
 119         LocalUnlock16( handle );
 120         stack16->ds = oldDS;
 121     }
 122 }
 123
 124 /*************************************************************************
 125  *             SYSCOLOR_SetColor
 126  */
 127 static void SYSCOLOR_SetColor( int index, COLORREF color )
 128 {
 129     if (index < 0 || index >= NUM_SYS_COLORS) return;
 130     SysColors[index] = color;
 131     if (SysColorBrushes[index])
 132     {
 133         SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), FALSE);
 134         DeleteObject( SysColorBrushes[index] );
 135     }
 136     SysColorBrushes[index] = CreateSolidBrush( color );
 137     SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), TRUE);
 138
 139     if (SysColorPens[index])
 140     {
 141         SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), FALSE);
 142         DeleteObject( SysColorPens[index] );
 143     }
 144     SysColorPens[index] = CreatePen( PS_SOLID, 1, color );
 145     SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), TRUE);
 146 }
 147
 148
 149 /*************************************************************************
 150  *             SYSCOLOR_Init
 151  */
 152 void SYSCOLOR_Init(void)
 153 {
 154     int i, r, g, b;
 155     char buffer[100];
 156     BOOL bOk = FALSE, bNoReg = FALSE;
 157     HKEY  hKey;
 158     HBITMAP h55AABitmap;
 159
 160     /* first, try to read the values from the registry */
 161     if (RegCreateKeyExA(HKEY_CURRENT_USER, "Control Panel\\Colors", 0, 0, 0, KEY_ALL_ACCESS, 0, &hKey, 0))
 162       bNoReg = TRUE;
 163     for (i = 0; i < NUM_SYS_COLORS; i++)
 164     { bOk = FALSE;
 165
 166       /* first try, registry */
 167       if (!bNoReg)
 168       {
 169         DWORD dwDataSize = sizeof(buffer);
 170         if (!(RegQueryValueExA(hKey,DefSysColors[i*2], 0, 0, buffer, &dwDataSize)))
 171           if (sscanf( buffer, "%d %d %d", &r, &g, &b ) == 3)
 172             bOk = TRUE;
 173       }
 174
 175       /* second try, win.ini */
 176       if (!bOk)
 177       { GetProfileStringA( "colors", DefSysColors[i*2], DefSysColors[i*2+1], buffer, 100 );
 178         if (sscanf( buffer, " %d %d %d", &r, &g, &b ) == 3)
 179           bOk = TRUE;
 180       }
 181
 182       /* last chance, take the default */
 183       if (!bOk)
 184       { int iNumColors = sscanf( DefSysColors[i*2+1], " %d %d %d", &r, &g, &b );
 185         assert (iNumColors==3);
 186       }
 187
 188       SYSCOLOR_SetColor( i, RGB(r,g,b) );
 189     }
 190     if (!bNoReg)
 191       RegCloseKey(hKey);
 192
 193     h55AABitmap = CreateBitmap( 8, 8, 1, 1, wPattern55AA );
 194     SYSCOLOR_55AABrush = CreatePatternBrush( h55AABitmap );
 195     SYSCOLOR_MakeObjectSystem( HBRUSH_16(SYSCOLOR_55AABrush), TRUE );
 196 }
 197
 198
 199 /*************************************************************************
 200  *              GetSysColor (USER32.@)
 201  */
 202 COLORREF WINAPI GetSysColor( INT nIndex )
 203 {
 204     if (nIndex >= 0 && nIndex < NUM_SYS_COLORS)
 205         return SysColors[nIndex];
 206     else
 207         return 0;
 208 }
 209
 210
 211 /*************************************************************************
 212  *              SetSysColors (USER32.@)
 213  */
 214 BOOL WINAPI SetSysColors( INT nChanges, const INT *lpSysColor,
 215                               const COLORREF *lpColorValues )
 216 {
 217     int i;
 218
 219     for (i = 0; i < nChanges; i++)
 220     {
 221         SYSCOLOR_SetColor( lpSysColor[i], lpColorValues[i] );
 222     }
 223
 224     /* Send WM_SYSCOLORCHANGE message to all windows */
 225
 226     SendMessageTimeoutW( HWND_BROADCAST, WM_SYSCOLORCHANGE, 0, 0,
 227                          SMTO_ABORTIFHUNG, 2000, NULL );
 228
 229     /* Repaint affected portions of all visible windows */
 230
 231     RedrawWindow( GetDesktopWindow(), NULL, 0,
 232                 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ALLCHILDREN );
 233     return TRUE;
 234 }
 235
 236 /*************************************************************************
 237  *              SetSysColorsTemp (USER32.@)
 238  *
 239  * UNDOCUMENTED !!
 240  *
 241  * Called by W98SE desk.cpl Control Panel Applet:
 242  * handle = SetSysColorsTemp(ptr, ptr, nCount);     ("set" call)
 243  * result = SetSysColorsTemp(NULL, NULL, handle);   ("restore" call)
 244  *
 245  * pPens is an array of COLORREF values, which seems to be used
 246  * to indicate the color values to create new pens with.
 247  *
 248  * pBrushes is an array of solid brush handles (returned by a previous
 249  * CreateSolidBrush), which seems to contain the brush handles to set
 250  * for the system colors.
 251  *
 252  * n seems to be used for
 253  *   a) indicating the number of entries to operate on (length of pPens,
 254  *      pBrushes)
 255  *   b) passing the handle that points to the previously used color settings.
 256  *      I couldn't figure out in hell what kind of handle this is on
 257  *      Windows. I just use a heap handle instead. Shouldn't matter anyway.
 258  *
 259  * RETURNS
 260  *     heap handle of our own copy of the current syscolors in case of
 261  *                 "set" call, i.e. pPens, pBrushes != NULL.
 262  *     TRUE (unconditionally !) in case of "restore" call,
 263  *          i.e. pPens, pBrushes == NULL.
 264  *     FALSE in case of either pPens != NULL and pBrushes == NULL
 265  *          or pPens == NULL and pBrushes != NULL.
 266  *
 267  * I'm not sure whether this implementation is 100% correct. [AM]
 268  */
 269 DWORD WINAPI SetSysColorsTemp( const COLORREF *pPens, const HBRUSH *pBrushes, DWORD n)
 270 {
 271         int i;
 272
 273         if (pPens && pBrushes) /* "set" call */
 274         {
 275             /* allocate our structure to remember old colors */
 276             LPVOID pOldCol = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD)+n*sizeof(HPEN)+n*sizeof(HBRUSH));
 277             LPVOID p = pOldCol;
 278            *(DWORD *)p = n; p = (char*)p + sizeof(DWORD);
 279            memcpy(p, SysColorPens, n*sizeof(HPEN)); p = (char*)p + n*sizeof(HPEN);
 280            memcpy(p, SysColorBrushes, n*sizeof(HBRUSH)); p = (char*)p + n*sizeof(HBRUSH);
 281
 282             for (i=0; i < n; i++)
 283             {
 284                 SysColorPens[i] = CreatePen( PS_SOLID, 1, pPens[i] );
 285                 SysColorBrushes[i] = pBrushes[i];
 286             }
 287
 288             return (DWORD)pOldCol;
 289         }
 290         if ((!pPens) && (!pBrushes)) /* "restore" call */
 291         {
 292             LPVOID pOldCol = (LPVOID)n;
 293             LPVOID p = pOldCol;
 294             DWORD nCount = *(DWORD *)p;
 295            p = (char*)p + sizeof(DWORD);
 296
 297             for (i=0; i < nCount; i++)
 298             {
 299                 DeleteObject(SysColorPens[i]);
 300                SysColorPens[i] = *(HPEN *)p; p = (char*)p + sizeof(HPEN);
 301             }
 302             for (i=0; i < nCount; i++)
 303             {
 304                SysColorBrushes[i] = *(HBRUSH *)p; p = (char*)p + sizeof(HBRUSH);
 305             }
 306             /* get rid of storage structure */
 307             HeapFree(GetProcessHeap(), 0, pOldCol);
 308
 309             return TRUE;
 310         }
 311         return FALSE;
 312 }
 313
 314 /***********************************************************************
 315  *              GetSysColorBrush (USER32.@)
 316  */
 317 HBRUSH WINAPI GetSysColorBrush( INT index )
 318 {
 319     if (0 <= index && index < NUM_SYS_COLORS)
 320         return SysColorBrushes[index];
 321     WARN("Unknown index(%d)\n", index );
 322     return GetStockObject(LTGRAY_BRUSH);
 323 }
 324
 325
 326 /***********************************************************************
 327  *              SYSCOLOR_GetPen
 328  */
 329 HPEN SYSCOLOR_GetPen( INT index )
 330 {
 331     /* We can assert here, because this function is internal to Wine */
 332     assert (0 <= index && index < NUM_SYS_COLORS);
 333     return SysColorPens[index];
 334 }