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