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 <stdio.h>
  24 #include <stdlib.h>
  25
  26 #include "windef.h"
  27 #include "wingdi.h"
  28 #include "wine/winbase16.h"
  29 #include "wine/winuser16.h"
  30 #include "sysmetrics.h"
  31 #include "winbase.h"
  32 #include "winuser.h"
  33 #include "wownt32.h"
  34 #include "winreg.h"
  35 #include "local.h"
  36 #include "user.h"
  37 #include "gdi.h" /* sic */
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(syscolor);
  41
  42 static const char * const DefSysColors[] =
  43 {
  44     "Scrollbar", "224 224 224",      /* COLOR_SCROLLBAR           */
  45     "Background", "192 192 192",     /* COLOR_BACKGROUND          */
  46     "ActiveTitle", "0 64 128",       /* COLOR_ACTIVECAPTION       */
  47     "InactiveTitle", "255 255 255",  /* COLOR_INACTIVECAPTION     */
  48     "Menu", "255 255 255",           /* COLOR_MENU                */
  49     "Window", "255 255 255",         /* COLOR_WINDOW              */
  50     "WindowFrame", "0 0 0",          /* COLOR_WINDOWFRAME         */
  51     "MenuText", "0 0 0",             /* COLOR_MENUTEXT            */
  52     "WindowText", "0 0 0",           /* COLOR_WINDOWTEXT          */
  53     "TitleText", "255 255 255",      /* COLOR_CAPTIONTEXT         */
  54     "ActiveBorder", "128 128 128",   /* COLOR_ACTIVEBORDER        */
  55     "InactiveBorder", "255 255 255", /* COLOR_INACTIVEBORDER      */
  56     "AppWorkspace", "255 255 232",   /* COLOR_APPWORKSPACE        */
  57     "Hilight", "224 224 224",        /* COLOR_HIGHLIGHT           */
  58     "HilightText", "0 0 0",          /* COLOR_HIGHLIGHTTEXT       */
  59     "ButtonFace", "192 192 192",     /* COLOR_BTNFACE             */
  60     "ButtonShadow", "128 128 128",   /* COLOR_BTNSHADOW           */
  61     "GrayText", "192 192 192",       /* COLOR_GRAYTEXT            */
  62     "ButtonText", "0 0 0",           /* COLOR_BTNTEXT             */
  63     "InactiveTitleText", "0 0 0",    /* COLOR_INACTIVECAPTIONTEXT */
  64     "ButtonHilight", "255 255 255",  /* COLOR_BTNHIGHLIGHT        */
  65     "3DDarkShadow", "32 32 32",      /* COLOR_3DDKSHADOW          */
  66     "3DLight", "192 192 192",        /* COLOR_3DLIGHT             */
  67     "InfoText", "0 0 0",             /* COLOR_INFOTEXT            */
  68     "InfoBackground", "255 255 192", /* COLOR_INFOBK              */
  69     "AlternateButtonFace", "184 180 184",  /* COLOR_ALTERNATEBTNFACE */
  70     "HotTrackingColor", "0 0 255",         /* COLOR_HOTLIGHT */
  71     "GradientActiveTitle", "16 132 208",   /* COLOR_GRADIENTACTIVECAPTION */
  72     "GradientInactiveTitle", "181 181 181" /* COLOR_GRADIENTINACTIVECAPTION */
  73 };
  74
  75 static const char * const DefSysColors95[] =
  76 {
  77     "Scrollbar", "192 192 192",      /* COLOR_SCROLLBAR           */
  78     "Background", "0 128 128",       /* COLOR_BACKGROUND          */
  79     "ActiveTitle", "0 0 128",        /* COLOR_ACTIVECAPTION       */
  80     "InactiveTitle", "128 128 128",  /* COLOR_INACTIVECAPTION     */
  81     "Menu", "192 192 192",           /* COLOR_MENU                */
  82     "Window", "255 255 255",         /* COLOR_WINDOW              */
  83     "WindowFrame", "0 0 0",          /* COLOR_WINDOWFRAME         */
  84     "MenuText", "0 0 0",             /* COLOR_MENUTEXT            */
  85     "WindowText", "0 0 0",           /* COLOR_WINDOWTEXT          */
  86     "TitleText", "255 255 255",      /* COLOR_CAPTIONTEXT         */
  87     "ActiveBorder", "192 192 192",   /* COLOR_ACTIVEBORDER        */
  88     "InactiveBorder", "192 192 192", /* COLOR_INACTIVEBORDER      */
  89     "AppWorkspace", "128 128 128",   /* COLOR_APPWORKSPACE        */
  90     "Hilight", "0 0 128",            /* COLOR_HIGHLIGHT           */
  91     "HilightText", "255 255 255",    /* COLOR_HIGHLIGHTTEXT       */
  92     "ButtonFace", "192 192 192",     /* COLOR_BTNFACE             */
  93     "ButtonShadow", "128 128 128",   /* COLOR_BTNSHADOW           */
  94     "GrayText", "128 128 128",       /* COLOR_GRAYTEXT            */
  95     "ButtonText", "0 0 0",           /* COLOR_BTNTEXT             */
  96     "InactiveTitleText", "192 192 192",/* COLOR_INACTIVECAPTIONTEXT */
  97     "ButtonHilight", "255 255 255",  /* COLOR_BTNHIGHLIGHT        */
  98     "3DDarkShadow", "0 0 0",         /* COLOR_3DDKSHADOW          */
  99     "3DLight", "224 224 224",        /* COLOR_3DLIGHT             */
 100     "InfoText", "0 0 0",             /* COLOR_INFOTEXT            */
 101     "InfoBackground", "255 255 225", /* COLOR_INFOBK              */
 102     "AlternateButtonFace", "180 180 180",  /* COLOR_ALTERNATEBTNFACE */
 103     "HotTrackingColor", "0 0 255",         /* COLOR_HOTLIGHT */
 104     "GradientActiveTitle", "16 132 208",   /* COLOR_GRADIENTACTIVECAPTION */
 105     "GradientInactiveTitle", "181 181 181" /* COLOR_GRADIENTINACTIVECAPTION */
 106 };
 107
 108
 109 #define NUM_SYS_COLORS     (COLOR_GRADIENTINACTIVECAPTION+1)
 110
 111 static COLORREF SysColors[NUM_SYS_COLORS];
 112 static HBRUSH SysColorBrushes[NUM_SYS_COLORS];
 113 static HPEN   SysColorPens[NUM_SYS_COLORS];
 114
 115
 116 /*************************************************************************
 117  * SYSCOLOR_MakeObjectSystem
 118  *
 119  * OK, now for a very ugly hack.
 120  * USER somehow has to tell GDI that its system brushes and pens are
 121  * non-deletable.
 122  * We don't want to export a function from GDI doing this for us,
 123  * so we just do that ourselves by "wildly flipping some bits in memory".
 124  * For a description of the GDI object magics and their flags,
 125  * see "Undocumented Windows" (wrong about the OBJECT_NOSYSTEM flag, though).
 126  */
 127 static void SYSCOLOR_MakeObjectSystem( HGDIOBJ16 handle, BOOL set)
 128 {
 129     static WORD heap_sel = 0;
 130     LPWORD ptr;
 131
 132     if (!heap_sel) heap_sel = LoadLibrary16( "gdi" );
 133     if (heap_sel >= 32)
 134     {
 135         ptr = (LPWORD)LOCAL_Lock(heap_sel, handle);
 136
 137         /* touch the "system" bit of the wMagic field of a GDIOBJHDR */
 138         if (set)
 139             *(ptr+1) &= ~OBJECT_NOSYSTEM;
 140         else
 141             *(ptr+1) |= OBJECT_NOSYSTEM;
 142         LOCAL_Unlock( heap_sel, handle );
 143     }
 144 }
 145
 146 /*************************************************************************
 147  *             SYSCOLOR_SetColor
 148  */
 149 static void SYSCOLOR_SetColor( int index, COLORREF color )
 150 {
 151     if (index < 0 || index >= NUM_SYS_COLORS) return;
 152     SysColors[index] = color;
 153     if (SysColorBrushes[index])
 154     {
 155         SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), FALSE);
 156         DeleteObject( SysColorBrushes[index] );
 157     }
 158     SysColorBrushes[index] = CreateSolidBrush( color );
 159     SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), TRUE);
 160
 161     if (SysColorPens[index])
 162     {
 163         SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), FALSE);
 164         DeleteObject( SysColorPens[index] );
 165     }
 166     SysColorPens[index] = CreatePen( PS_SOLID, 1, color );
 167     SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), TRUE);
 168 }
 169
 170
 171 /*************************************************************************
 172  *             SYSCOLOR_Init
 173  */
 174 void SYSCOLOR_Init(void)
 175 {
 176     int i, r, g, b;
 177     const char * const *p;
 178     char buffer[100];
 179     BOOL bOk = FALSE, bNoReg = FALSE;
 180     HKEY  hKey;
 181
 182     p = (TWEAK_WineLook == WIN31_LOOK) ? DefSysColors : DefSysColors95;
 183
 184     /* first, try to read the values from the registry */
 185     if (RegCreateKeyExA(HKEY_CURRENT_USER, "Control Panel\\Colors", 0, 0, 0, KEY_ALL_ACCESS, 0, &hKey, 0))
 186       bNoReg = TRUE;
 187     for (i = 0; i < NUM_SYS_COLORS; i++)
 188     { bOk = FALSE;
 189
 190       /* first try, registry */
 191       if (!bNoReg)
 192       {
 193         DWORD dwDataSize = sizeof(buffer);
 194         if (!(RegQueryValueExA(hKey,(LPSTR)p[i*2], 0, 0, buffer, &dwDataSize)))
 195           if (sscanf( buffer, "%d %d %d", &r, &g, &b ) == 3)
 196             bOk = TRUE;
 197       }
 198
 199       /* second try, win.ini */
 200       if (!bOk)
 201       { GetProfileStringA( "colors", p[i*2], p[i*2+1], buffer, 100 );
 202         if (sscanf( buffer, " %d %d %d", &r, &g, &b ) == 3)
 203           bOk = TRUE;
 204       }
 205
 206       /* last chance, take the default */
 207       if (!bOk)
 208       { int iNumColors = sscanf( p[i*2+1], " %d %d %d", &r, &g, &b );
 209         assert (iNumColors==3);
 210       }
 211
 212       SYSCOLOR_SetColor( i, RGB(r,g,b) );
 213     }
 214     if (!bNoReg)
 215       RegCloseKey(hKey);
 216 }
 217
 218
 219 /*************************************************************************
 220  *              GetSysColor (USER.180)
 221  */
 222 COLORREF WINAPI GetSysColor16( INT16 nIndex )
 223 {
 224     return GetSysColor (nIndex);
 225 }
 226
 227
 228 /*************************************************************************
 229  *              GetSysColor (USER32.@)
 230  */
 231 COLORREF WINAPI GetSysColor( INT nIndex )
 232 {
 233     if (nIndex >= 0 && nIndex < NUM_SYS_COLORS)
 234         return SysColors[nIndex];
 235     else
 236         return 0;
 237 }
 238
 239
 240 /*************************************************************************
 241  *              SetSysColors (USER.181)
 242  */
 243 VOID WINAPI SetSysColors16( INT16 nChanges, const INT16 *lpSysColor,
 244                             const COLORREF *lpColorValues )
 245 {
 246     int i;
 247
 248     for (i = 0; i < nChanges; i++)
 249     {
 250         SYSCOLOR_SetColor( lpSysColor[i], lpColorValues[i] );
 251     }
 252
 253     /* Send WM_SYSCOLORCHANGE message to all windows */
 254
 255     SendMessageA( HWND_BROADCAST, WM_SYSCOLORCHANGE, 0, 0 );
 256
 257     /* Repaint affected portions of all visible windows */
 258
 259     RedrawWindow( GetDesktopWindow(), NULL, 0,
 260                 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ALLCHILDREN );
 261 }
 262
 263
 264 /*************************************************************************
 265  *              SetSysColors (USER32.@)
 266  */
 267 BOOL WINAPI SetSysColors( INT nChanges, const INT *lpSysColor,
 268                               const COLORREF *lpColorValues )
 269 {
 270     int i;
 271
 272     for (i = 0; i < nChanges; i++)
 273     {
 274         SYSCOLOR_SetColor( lpSysColor[i], lpColorValues[i] );
 275     }
 276
 277     /* Send WM_SYSCOLORCHANGE message to all windows */
 278
 279     SendMessageA( HWND_BROADCAST, WM_SYSCOLORCHANGE, 0, 0 );
 280
 281     /* Repaint affected portions of all visible windows */
 282
 283     RedrawWindow( GetDesktopWindow(), NULL, 0,
 284                 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ALLCHILDREN );
 285     return TRUE;
 286 }
 287
 288 /*************************************************************************
 289  *              SetSysColorsTemp (USER32.@)
 290  *
 291  * UNDOCUMENTED !!
 292  *
 293  * Called by W98SE desk.cpl Control Panel Applet:
 294  * handle = SetSysColorsTemp(ptr, ptr, nCount);     ("set" call)
 295  * result = SetSysColorsTemp(NULL, NULL, handle);   ("restore" call)
 296  *
 297  * pPens is an array of COLORREF values, which seems to be used
 298  * to indicate the color values to create new pens with.
 299  *
 300  * pBrushes is an array of solid brush handles (returned by a previous
 301  * CreateSolidBrush), which seems to contain the brush handles to set
 302  * for the system colors.
 303  *
 304  * n seems to be used for
 305  *   a) indicating the number of entries to operate on (length of pPens,
 306  *      pBrushes)
 307  *   b) passing the handle that points to the previously used color settings.
 308  *      I couldn't figure out in hell what kind of handle this is on
 309  *      Windows. I just use a heap handle instead. Shouldn't matter anyway.
 310  *
 311  * RETURNS
 312  *     heap handle of our own copy of the current syscolors in case of
 313  *                 "set" call, i.e. pPens, pBrushes != NULL.
 314  *     TRUE (unconditionally !) in case of "restore" call,
 315  *          i.e. pPens, pBrushes == NULL.
 316  *     FALSE in case of either pPens != NULL and pBrushes == NULL
 317  *          or pPens == NULL and pBrushes != NULL.
 318  *
 319  * I'm not sure whether this implementation is 100% correct. [AM]
 320  */
 321 DWORD WINAPI SetSysColorsTemp( const COLORREF *pPens, const HBRUSH *pBrushes, DWORD n)
 322 {
 323         int i;
 324
 325         if (pPens && pBrushes) /* "set" call */
 326         {
 327             /* allocate our structure to remember old colors */
 328             LPVOID pOldCol = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD)+n*sizeof(HPEN)+n*sizeof(HBRUSH));
 329             LPVOID p = pOldCol;
 330            *(DWORD *)p = n; p = (char*)p + sizeof(DWORD);
 331            memcpy(p, SysColorPens, n*sizeof(HPEN)); p = (char*)p + n*sizeof(HPEN);
 332            memcpy(p, SysColorBrushes, n*sizeof(HBRUSH)); p = (char*)p + n*sizeof(HBRUSH);
 333
 334             for (i=0; i < n; i++)
 335             {
 336                 SysColorPens[i] = CreatePen( PS_SOLID, 1, pPens[i] );
 337                 SysColorBrushes[i] = pBrushes[i];
 338             }
 339
 340             return (DWORD)pOldCol;
 341         }
 342         if ((!pPens) && (!pBrushes)) /* "restore" call */
 343         {
 344             LPVOID pOldCol = (LPVOID)n;
 345             LPVOID p = pOldCol;
 346             DWORD nCount = *(DWORD *)p;
 347            p = (char*)p + sizeof(DWORD);
 348
 349             for (i=0; i < nCount; i++)
 350             {
 351                 DeleteObject(SysColorPens[i]);
 352                SysColorPens[i] = *(HPEN *)p; p = (char*)p + sizeof(HPEN);
 353             }
 354             for (i=0; i < nCount; i++)
 355             {
 356                SysColorBrushes[i] = *(HBRUSH *)p; p = (char*)p + sizeof(HBRUSH);
 357             }
 358             /* get rid of storage structure */
 359             HeapFree(GetProcessHeap(), 0, pOldCol);
 360
 361             return TRUE;
 362         }
 363         return FALSE;
 364 }
 365
 366 /***********************************************************************
 367  *              GetSysColorBrush (USER32.@)
 368  */
 369 HBRUSH WINAPI GetSysColorBrush( INT index )
 370 {
 371     if (0 <= index && index < NUM_SYS_COLORS)
 372         return SysColorBrushes[index];
 373     WARN("Unknown index(%d)\n", index );
 374     return GetStockObject(LTGRAY_BRUSH);
 375 }
 376
 377
 378 /***********************************************************************
 379  *              SYSCOLOR_GetPen
 380  */
 381 HPEN SYSCOLOR_GetPen( INT index )
 382 {
 383     /* We can assert here, because this function is internal to Wine */
 384     assert (0 <= index && index < NUM_SYS_COLORS);
 385     return SysColorPens[index];
 386
 387 }