windows/sysmetrics.c

   1 /*
   2  * System metrics functions
   3  *
   4  * Copyright 1994 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <assert.h>
  24
  25 #include "windef.h"
  26 #include "wingdi.h"
  27 #include "wine/winuser16.h"
  28 #include "winbase.h"
  29 #include "winreg.h"
  30 #include "winuser.h"
  31 #include "winerror.h"
  32 #include "user.h"
  33
  34 static int sysMetrics[SM_WINE_CMETRICS+1];
  35
  36
  37 /***********************************************************************
  38  * RegistryTwips2Pixels
  39  *
  40  * Convert a a dimension value that was obtained from the registry.  These are
  41  * quoted as being "twips" values if negative and pixels if positive.
  42  * See for example
  43  *   MSDN Library - April 2001 -> Resource Kits ->
  44  *       Windows 2000 Resource Kit Reference ->
  45  *       Technical Reference to the Windows 2000 Registry ->
  46  *       HKEY_CURRENT_USER -> Control Panel -> Desktop -> WindowMetrics
  47  *
  48  * This is written as a function to prevent repeated evaluation of the
  49  * argument.
  50  */
  51 inline static int RegistryTwips2Pixels(int x)
  52 {
  53     if (x < 0)
  54         x = (-x+7)/15;
  55     return x;
  56 }
  57
  58
  59 /***********************************************************************
  60  * SYSMETRICS_GetRegistryMetric
  61  *
  62  * Get a registry entry from the already open key.  This allows us to open the
  63  * section once and read several values.
  64  *
  65  * Of course this function belongs somewhere more usable but here will do
  66  * for now.
  67  */
  68 static int SYSMETRICS_GetRegistryMetric (
  69         HKEY       hkey,            /* handle to the registry section */
  70         const char *key,            /* value name in the section */
  71         int        default_value)   /* default to return */
  72 {
  73     int value = default_value;
  74     if (hkey)
  75     {
  76         BYTE buffer[128];
  77         DWORD type, count = sizeof(buffer);
  78         if(!RegQueryValueExA (hkey, key, 0, &type, buffer, &count))
  79         {
  80             if (type != REG_SZ)
  81             {
  82                 /* Are there any utilities for converting registry entries
  83                  * between formats?
  84                  */
  85                 /* FIXME_(reg)("We need reg format converter\n"); */
  86             }
  87             else
  88                 value = atoi(buffer);
  89         }
  90     }
  91     return RegistryTwips2Pixels(value);
  92 }
  93
  94
  95 /***********************************************************************
  96  *           SYSMETRICS_Init
  97  *
  98  * Initialisation of the system metrics array.
  99  *
 100  * Differences in return values between 3.1 and 95 apps under Win95 (FIXME ?):
 101  * SM_CXVSCROLL        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 102  * SM_CYHSCROLL        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 103  * SM_CXDLGFRAME       x-1      x       Already fixed
 104  * SM_CYDLGFRAME       x-1      x       Already fixed
 105  * SM_CYCAPTION        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 106  * SM_CYMENU           x-1      x       Already fixed
 107  * SM_CYFULLSCREEN     x-1      x
 108  * SM_CXFRAME                           Fixed July 6, 2001 - Bill Medland
 109  *
 110  * (collides with TWEAK_WineLook sometimes,
 111  * so changing anything might be difficult)
 112  *
 113  * Starting at Win95 there are now a large number or Registry entries in the
 114  * [WindowMetrics] section that are probably relevant here.
 115  */
 116 void SYSMETRICS_Init(void)
 117 {
 118     HDC hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
 119     HKEY hkey; /* key to the window metrics area of the registry */
 120     INT dummy;
 121
 122     assert(hdc);
 123
 124     if (RegOpenKeyExA (HKEY_CURRENT_USER, "Control Panel\\desktop\\WindowMetrics",
 125                        0, KEY_QUERY_VALUE, &hkey) != ERROR_SUCCESS) hkey = 0;
 126
 127     if (TWEAK_WineLook > WIN31_LOOK)
 128     {
 129         sysMetrics[SM_CXVSCROLL] = SYSMETRICS_GetRegistryMetric( hkey, "ScrollWidth", 16 );
 130         sysMetrics[SM_CYHSCROLL] = sysMetrics[SM_CXVSCROLL];
 131
 132         /* The Win 2000 resource kit SAYS that this is governed by the ScrollHeight
 133          * but on my computer that controls the CYV/CXH values. */
 134         sysMetrics[SM_CYCAPTION] = SYSMETRICS_GetRegistryMetric(hkey, "CaptionHeight", 18)
 135                                      + 1; /* for the separator? */
 136
 137         sysMetrics[SM_CYMENU] = SYSMETRICS_GetRegistryMetric (hkey, "MenuHeight", 18) + 1;
 138
 139
 140         sysMetrics[SM_CXDLGFRAME] = 3;
 141         sysMetrics[SM_CYDLGFRAME] = sysMetrics[SM_CXDLGFRAME];
 142
 143         /* force setting of SM_CXFRAME/SM_CYFRAME */
 144         SystemParametersInfoA( SPI_GETBORDER, 0, &dummy, 0 );
 145     }
 146     else
 147     {
 148         sysMetrics[SM_CXVSCROLL]  = 17;
 149         sysMetrics[SM_CYHSCROLL]  = sysMetrics[SM_CXVSCROLL];
 150         sysMetrics[SM_CYCAPTION]  = 20;
 151         sysMetrics[SM_CYMENU]     = 18;
 152         sysMetrics[SM_CXDLGFRAME] = 4;
 153         sysMetrics[SM_CYDLGFRAME] = sysMetrics[SM_CXDLGFRAME];
 154         sysMetrics[SM_CXFRAME]    = GetProfileIntA("Windows", "BorderWidth", 4) + 1;
 155         sysMetrics[SM_CYFRAME]    = sysMetrics[SM_CXFRAME];
 156     }
 157
 158     sysMetrics[SM_CXCURSOR] = 32;
 159     sysMetrics[SM_CYCURSOR] = 32;
 160     sysMetrics[SM_CXSCREEN] = GetDeviceCaps( hdc, HORZRES );
 161     sysMetrics[SM_CYSCREEN] = GetDeviceCaps( hdc, VERTRES );
 162     sysMetrics[SM_WINE_BPP] = GetDeviceCaps( hdc, BITSPIXEL );
 163     sysMetrics[SM_CXBORDER] = 1;
 164     sysMetrics[SM_CYBORDER] = sysMetrics[SM_CXBORDER];
 165     sysMetrics[SM_CYVTHUMB] = sysMetrics[SM_CXVSCROLL];
 166     sysMetrics[SM_CXHTHUMB] = sysMetrics[SM_CYVTHUMB];
 167     sysMetrics[SM_CXICON] = 32;
 168     sysMetrics[SM_CYICON] = 32;
 169     sysMetrics[SM_CXFULLSCREEN] = sysMetrics[SM_CXSCREEN];
 170     sysMetrics[SM_CYFULLSCREEN] = sysMetrics[SM_CYSCREEN] - sysMetrics[SM_CYCAPTION];
 171     sysMetrics[SM_CYKANJIWINDOW] = 0;
 172     sysMetrics[SM_MOUSEPRESENT] = 1;
 173     sysMetrics[SM_CYVSCROLL] = SYSMETRICS_GetRegistryMetric (hkey, "ScrollHeight", sysMetrics[SM_CXVSCROLL]);
 174     sysMetrics[SM_CXHSCROLL] = SYSMETRICS_GetRegistryMetric (hkey, "ScrollHeight", sysMetrics[SM_CYHSCROLL]);
 175     sysMetrics[SM_DEBUG] = 0;
 176
 177     sysMetrics[SM_SWAPBUTTON] = 0;
 178     sysMetrics[SM_SWAPBUTTON] = SYSPARAMS_GetMouseButtonSwap();
 179
 180     sysMetrics[SM_RESERVED1] = 0;
 181     sysMetrics[SM_RESERVED2] = 0;
 182     sysMetrics[SM_RESERVED3] = 0;
 183     sysMetrics[SM_RESERVED4] = 0;
 184
 185     /* FIXME: The following two are calculated, but how? */
 186     sysMetrics[SM_CXMIN] = (TWEAK_WineLook > WIN31_LOOK) ? 112 : 100;
 187     sysMetrics[SM_CYMIN] = (TWEAK_WineLook > WIN31_LOOK) ? 27 : 28;
 188
 189     sysMetrics[SM_CXSIZE] = sysMetrics[SM_CYCAPTION] - 1;
 190     sysMetrics[SM_CYSIZE] = sysMetrics[SM_CXSIZE];
 191     sysMetrics[SM_CXMINTRACK] = sysMetrics[SM_CXMIN];
 192     sysMetrics[SM_CYMINTRACK] = sysMetrics[SM_CYMIN];
 193
 194     sysMetrics[SM_CXDOUBLECLK] = 4;
 195     sysMetrics[SM_CYDOUBLECLK] = 4;
 196     SYSPARAMS_GetDoubleClickSize( &sysMetrics[SM_CXDOUBLECLK], &sysMetrics[SM_CYDOUBLECLK] );
 197
 198     sysMetrics[SM_CXICONSPACING] = 75;
 199     SystemParametersInfoA( SPI_ICONHORIZONTALSPACING, 0,
 200                            &sysMetrics[SM_CXICONSPACING], 0 );
 201     sysMetrics[SM_CYICONSPACING] = 75;
 202     SystemParametersInfoA( SPI_ICONVERTICALSPACING, 0,
 203                            &sysMetrics[SM_CYICONSPACING], 0 );
 204
 205     SystemParametersInfoA( SPI_GETMENUDROPALIGNMENT, 0,
 206                            &sysMetrics[SM_MENUDROPALIGNMENT], 0 );
 207     sysMetrics[SM_PENWINDOWS] = 0;
 208     sysMetrics[SM_DBCSENABLED] = 0;
 209
 210     /* FIXME: Need to query X for the following */
 211     sysMetrics[SM_CMOUSEBUTTONS] = 3;
 212
 213     sysMetrics[SM_SECURE] = 0;
 214     sysMetrics[SM_CXEDGE] = sysMetrics[SM_CXBORDER] + 1;
 215     sysMetrics[SM_CYEDGE] = sysMetrics[SM_CXEDGE];
 216     sysMetrics[SM_CXMINSPACING] = 160;
 217     sysMetrics[SM_CYMINSPACING] = 24;
 218     sysMetrics[SM_CXSMICON] = sysMetrics[SM_CYSIZE] - (sysMetrics[SM_CYSIZE] % 2);
 219     sysMetrics[SM_CYSMICON] = sysMetrics[SM_CXSMICON];
 220     sysMetrics[SM_CYSMCAPTION] = 16;
 221     sysMetrics[SM_CXSMSIZE] = 13;
 222     sysMetrics[SM_CYSMSIZE] = 15;
 223     sysMetrics[SM_CXMENUSIZE] = sysMetrics[SM_CYMENU] - 1;
 224     sysMetrics[SM_CYMENUSIZE] = sysMetrics[SM_CXMENUSIZE];
 225
 226     /* FIXME: What do these mean? */
 227     sysMetrics[SM_ARRANGE] = ARW_HIDE;
 228     sysMetrics[SM_CXMINIMIZED] = 160;
 229     sysMetrics[SM_CYMINIMIZED] = 24;
 230
 231     /* FIXME: How do I calculate these? */
 232     sysMetrics[SM_CXMAXTRACK] = sysMetrics[SM_CXSCREEN] + 4 + 2 * sysMetrics[SM_CXFRAME];
 233     sysMetrics[SM_CYMAXTRACK] = sysMetrics[SM_CYSCREEN] + 4 + 2 * sysMetrics[SM_CYFRAME];
 234     sysMetrics[SM_CXMAXIMIZED] = sysMetrics[SM_CXSCREEN] + 2 * sysMetrics[SM_CXFRAME];
 235     sysMetrics[SM_CYMAXIMIZED] = sysMetrics[SM_CYSCREEN] + 2 * sysMetrics[SM_CXFRAME];
 236     sysMetrics[SM_NETWORK] = 3;
 237
 238     /* For the following: 0 = ok, 1 = failsafe, 2 = failsafe + network */
 239     sysMetrics[SM_CLEANBOOT] = 0;
 240
 241     sysMetrics[SM_CXDRAG] = 2;
 242     sysMetrics[SM_CYDRAG] = 2;
 243     sysMetrics[SM_CXMENUCHECK] = 13;
 244     sysMetrics[SM_CYMENUCHECK] = 13;
 245
 246     /* FIXME: Should check the type of processor for the following */
 247     sysMetrics[SM_SLOWMACHINE] = 0;
 248
 249     /* FIXME: Should perform a check */
 250     sysMetrics[SM_MIDEASTENABLED] = 0;
 251
 252     sysMetrics[SM_MOUSEWHEELPRESENT] = 0;
 253
 254     sysMetrics[SM_CXVIRTUALSCREEN] = sysMetrics[SM_CXSCREEN];
 255     sysMetrics[SM_CYVIRTUALSCREEN] = sysMetrics[SM_CYSCREEN];
 256     sysMetrics[SM_XVIRTUALSCREEN] = 0;
 257     sysMetrics[SM_YVIRTUALSCREEN] = 0;
 258     sysMetrics[SM_CMONITORS] = 1;
 259     sysMetrics[SM_SAMEDISPLAYFORMAT] = 1;
 260     sysMetrics[SM_CMETRICS] = SM_CMETRICS;
 261
 262     SystemParametersInfoA( SPI_GETSHOWSOUNDS, 0, &sysMetrics[SM_SHOWSOUNDS], 0 );
 263
 264     if (hkey) RegCloseKey (hkey);
 265     DeleteDC( hdc );
 266 }
 267
 268
 269 /***********************************************************************
 270  *              SYSMETRICS_Set
 271  *
 272  *  Sets system metrics.
 273  */
 274 INT SYSMETRICS_Set( INT index, INT value )
 275 {
 276     if ((index < 0) || (index > SM_WINE_CMETRICS)) return 0;
 277     else
 278     {
 279         INT prev = sysMetrics[index];
 280         sysMetrics[index] = value;
 281         return prev;
 282     }
 283 }
 284
 285
 286 /***********************************************************************
 287  *              GetSystemMetrics (USER.179)
 288  */
 289 INT16 WINAPI GetSystemMetrics16( INT16 index )
 290 {
 291     return (INT16)GetSystemMetrics(index);
 292 }
 293
 294
 295 /***********************************************************************
 296  *              GetSystemMetrics (USER32.@)
 297  */
 298 INT WINAPI GetSystemMetrics( INT index )
 299 {
 300     if ((index < 0) || (index > SM_WINE_CMETRICS)) return 0;
 301     return sysMetrics[index];
 302 }