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 <stdarg.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <assert.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winreg.h"
  29 #include "wingdi.h"
  30 #include "wine/winuser16.h"
  31 #include "winuser.h"
  32 #include "winerror.h"
  33 #include "user.h"
  34
  35 static int sysMetrics[SM_WINE_CMETRICS+1];
  36
  37
  38 /***********************************************************************
  39  * RegistryTwips2Pixels
  40  *
  41  * Convert a a dimension value that was obtained from the registry.  These are
  42  * quoted as being "twips" values if negative and pixels if positive.
  43  * See for example
  44  *   MSDN Library - April 2001 -> Resource Kits ->
  45  *       Windows 2000 Resource Kit Reference ->
  46  *       Technical Reference to the Windows 2000 Registry ->
  47  *       HKEY_CURRENT_USER -> Control Panel -> Desktop -> WindowMetrics
  48  *
  49  * This is written as a function to prevent repeated evaluation of the
  50  * argument.
  51  */
  52 inline static int RegistryTwips2Pixels(int x)
  53 {
  54     if (x < 0)
  55         x = (-x+7)/15;
  56     return x;
  57 }
  58
  59
  60 /***********************************************************************
  61  * SYSMETRICS_GetRegistryMetric
  62  *
  63  * Get a registry entry from the already open key.  This allows us to open the
  64  * section once and read several values.
  65  *
  66  * Of course this function belongs somewhere more usable but here will do
  67  * for now.
  68  */
  69 static int SYSMETRICS_GetRegistryMetric (
  70         HKEY       hkey,            /* handle to the registry section */
  71         const char *key,            /* value name in the section */
  72         int        default_value)   /* default to return */
  73 {
  74     int value = default_value;
  75     if (hkey)
  76     {
  77         BYTE buffer[128];
  78         DWORD type, count = sizeof(buffer);
  79         if(!RegQueryValueExA (hkey, key, 0, &type, buffer, &count))
  80         {
  81             if (type != REG_SZ)
  82             {
  83                 /* Are there any utilities for converting registry entries
  84                  * between formats?
  85                  */
  86                 /* FIXME_(reg)("We need reg format converter\n"); */
  87             }
  88             else
  89                 value = atoi(buffer);
  90         }
  91     }
  92     return RegistryTwips2Pixels(value);
  93 }
  94
  95
  96 /***********************************************************************
  97  *           SYSMETRICS_Init
  98  *
  99  * Initialisation of the system metrics array.
 100  *
 101  * Differences in return values between 3.1 and 95 apps under Win95 (FIXME ?):
 102  * SM_CXVSCROLL        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 103  * SM_CYHSCROLL        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 104  * SM_CXDLGFRAME       x-1      x       Already fixed
 105  * SM_CYDLGFRAME       x-1      x       Already fixed
 106  * SM_CYCAPTION        x+1      x       Fixed May 24, 1999 - Ronald B. Cemer
 107  * SM_CYMENU           x-1      x       Already fixed
 108  * SM_CYFULLSCREEN     x-1      x
 109  * SM_CXFRAME                           Fixed July 6, 2001 - Bill Medland
 110  *
 111  * (collides with TWEAK_WineLook sometimes,
 112  * so changing anything might be difficult)
 113  *
 114  * Starting at Win95 there are now a large number or Registry entries in the
 115  * [WindowMetrics] section that are probably relevant here.
 116  */
 117 void SYSMETRICS_Init(void)
 118 {
 119     HDC hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
 120     HKEY hkey; /* key to the window metrics area of the registry */
 121     INT dummy;
 122
 123     assert(hdc);
 124
 125     if (RegOpenKeyExA (HKEY_CURRENT_USER, "Control Panel\\desktop\\WindowMetrics",
 126                        0, KEY_QUERY_VALUE, &hkey) != ERROR_SUCCESS) hkey = 0;
 127
 128     if (TWEAK_WineLook > WIN31_LOOK)
 129     {
 130         sysMetrics[SM_CXVSCROLL] = SYSMETRICS_GetRegistryMetric( hkey, "ScrollWidth", 16 );
 131         sysMetrics[SM_CYHSCROLL] = sysMetrics[SM_CXVSCROLL];
 132
 133         /* The Win 2000 resource kit SAYS that this is governed by the ScrollHeight
 134          * but on my computer that controls the CYV/CXH values. */
 135         sysMetrics[SM_CYCAPTION] = SYSMETRICS_GetRegistryMetric(hkey, "CaptionHeight", 18)
 136                                      + 1; /* for the separator? */
 137
 138         sysMetrics[SM_CYMENU] = SYSMETRICS_GetRegistryMetric (hkey, "MenuHeight", 18) + 1;
 139
 140
 141         sysMetrics[SM_CXDLGFRAME] = 3;
 142         sysMetrics[SM_CYDLGFRAME] = sysMetrics[SM_CXDLGFRAME];
 143
 144         /* force setting of SM_CXFRAME/SM_CYFRAME */
 145         SystemParametersInfoA( SPI_GETBORDER, 0, &dummy, 0 );
 146     }
 147     else
 148     {
 149         sysMetrics[SM_CXVSCROLL]  = 17;
 150         sysMetrics[SM_CYHSCROLL]  = sysMetrics[SM_CXVSCROLL];
 151         sysMetrics[SM_CYCAPTION]  = 20;
 152         sysMetrics[SM_CYMENU]     = 18;
 153         sysMetrics[SM_CXDLGFRAME] = 4;
 154         sysMetrics[SM_CYDLGFRAME] = sysMetrics[SM_CXDLGFRAME];
 155         sysMetrics[SM_CXFRAME]    = GetProfileIntA("Windows", "BorderWidth", 4) + 1;
 156         sysMetrics[SM_CYFRAME]    = sysMetrics[SM_CXFRAME];
 157     }
 158
 159     sysMetrics[SM_CXCURSOR] = 32;
 160     sysMetrics[SM_CYCURSOR] = 32;
 161     sysMetrics[SM_CXSCREEN] = GetDeviceCaps( hdc, HORZRES );
 162     sysMetrics[SM_CYSCREEN] = GetDeviceCaps( hdc, VERTRES );
 163     sysMetrics[SM_WINE_BPP] = GetDeviceCaps( hdc, BITSPIXEL );
 164     sysMetrics[SM_CXBORDER] = 1;
 165     sysMetrics[SM_CYBORDER] = sysMetrics[SM_CXBORDER];
 166     sysMetrics[SM_CYVTHUMB] = sysMetrics[SM_CXVSCROLL];
 167     sysMetrics[SM_CXHTHUMB] = sysMetrics[SM_CYVTHUMB];
 168     sysMetrics[SM_CXICON] = 32;
 169     sysMetrics[SM_CYICON] = 32;
 170     sysMetrics[SM_CXFULLSCREEN] = sysMetrics[SM_CXSCREEN];
 171     sysMetrics[SM_CYFULLSCREEN] = sysMetrics[SM_CYSCREEN] - sysMetrics[SM_CYCAPTION];
 172     sysMetrics[SM_CYKANJIWINDOW] = 0;
 173     sysMetrics[SM_MOUSEPRESENT] = 1;
 174     sysMetrics[SM_CYVSCROLL] = SYSMETRICS_GetRegistryMetric (hkey, "ScrollHeight", sysMetrics[SM_CXVSCROLL]);
 175     sysMetrics[SM_CXHSCROLL] = SYSMETRICS_GetRegistryMetric (hkey, "ScrollHeight", sysMetrics[SM_CYHSCROLL]);
 176     sysMetrics[SM_DEBUG] = 0;
 177
 178     sysMetrics[SM_SWAPBUTTON] = 0;
 179     sysMetrics[SM_SWAPBUTTON] = SYSPARAMS_GetMouseButtonSwap();
 180
 181     sysMetrics[SM_RESERVED1] = 0;
 182     sysMetrics[SM_RESERVED2] = 0;
 183     sysMetrics[SM_RESERVED3] = 0;
 184     sysMetrics[SM_RESERVED4] = 0;
 185
 186     /* FIXME: The following two are calculated, but how? */
 187     sysMetrics[SM_CXMIN] = (TWEAK_WineLook > WIN31_LOOK) ? 112 : 100;
 188     sysMetrics[SM_CYMIN] = (TWEAK_WineLook > WIN31_LOOK) ? 27 : 28;
 189
 190     sysMetrics[SM_CXSIZE] = sysMetrics[SM_CYCAPTION] - 1;
 191     sysMetrics[SM_CYSIZE] = sysMetrics[SM_CXSIZE];
 192     sysMetrics[SM_CXMINTRACK] = sysMetrics[SM_CXMIN];
 193     sysMetrics[SM_CYMINTRACK] = sysMetrics[SM_CYMIN];
 194
 195     sysMetrics[SM_CXDOUBLECLK] = 4;
 196     sysMetrics[SM_CYDOUBLECLK] = 4;
 197     SYSPARAMS_GetDoubleClickSize( &sysMetrics[SM_CXDOUBLECLK], &sysMetrics[SM_CYDOUBLECLK] );
 198
 199     sysMetrics[SM_CXICONSPACING] = 75;
 200     SystemParametersInfoA( SPI_ICONHORIZONTALSPACING, 0,
 201                            &sysMetrics[SM_CXICONSPACING], 0 );
 202     sysMetrics[SM_CYICONSPACING] = 75;
 203     SystemParametersInfoA( SPI_ICONVERTICALSPACING, 0,
 204                            &sysMetrics[SM_CYICONSPACING], 0 );
 205
 206     SystemParametersInfoA( SPI_GETMENUDROPALIGNMENT, 0,
 207                            &sysMetrics[SM_MENUDROPALIGNMENT], 0 );
 208     sysMetrics[SM_PENWINDOWS] = 0;
 209     sysMetrics[SM_DBCSENABLED] = 0;
 210
 211     /* FIXME: Need to query X for the following */
 212     sysMetrics[SM_CMOUSEBUTTONS] = 3;
 213
 214     sysMetrics[SM_SECURE] = 0;
 215     sysMetrics[SM_CXEDGE] = sysMetrics[SM_CXBORDER] + 1;
 216     sysMetrics[SM_CYEDGE] = sysMetrics[SM_CXEDGE];
 217     sysMetrics[SM_CXMINSPACING] = 160;
 218     sysMetrics[SM_CYMINSPACING] = 24;
 219     sysMetrics[SM_CXSMICON] = sysMetrics[SM_CYSIZE] - (sysMetrics[SM_CYSIZE] % 2);
 220     sysMetrics[SM_CYSMICON] = sysMetrics[SM_CXSMICON];
 221     sysMetrics[SM_CYSMCAPTION] = 16;
 222     sysMetrics[SM_CXSMSIZE] = 13;
 223     sysMetrics[SM_CYSMSIZE] = 15;
 224     sysMetrics[SM_CXMENUSIZE] = sysMetrics[SM_CYMENU] - 1;
 225     sysMetrics[SM_CYMENUSIZE] = sysMetrics[SM_CXMENUSIZE];
 226
 227     /* FIXME: What do these mean? */
 228     sysMetrics[SM_ARRANGE] = ARW_HIDE;
 229     sysMetrics[SM_CXMINIMIZED] = 160;
 230     sysMetrics[SM_CYMINIMIZED] = 24;
 231
 232     /* FIXME: How do I calculate these? */
 233     sysMetrics[SM_CXMAXTRACK] = sysMetrics[SM_CXSCREEN] + 4 + 2 * sysMetrics[SM_CXFRAME];
 234     sysMetrics[SM_CYMAXTRACK] = sysMetrics[SM_CYSCREEN] + 4 + 2 * sysMetrics[SM_CYFRAME];
 235     sysMetrics[SM_CXMAXIMIZED] = sysMetrics[SM_CXSCREEN] + 2 * sysMetrics[SM_CXFRAME];
 236     sysMetrics[SM_CYMAXIMIZED] = sysMetrics[SM_CYSCREEN] + 2 * sysMetrics[SM_CXFRAME];
 237     sysMetrics[SM_NETWORK] = 3;
 238
 239     /* For the following: 0 = ok, 1 = failsafe, 2 = failsafe + network */
 240     sysMetrics[SM_CLEANBOOT] = 0;
 241
 242     sysMetrics[SM_CXDRAG] = 2;
 243     sysMetrics[SM_CYDRAG] = 2;
 244     sysMetrics[SM_CXMENUCHECK] = 13;
 245     sysMetrics[SM_CYMENUCHECK] = 13;
 246
 247     /* FIXME: Should check the type of processor for the following */
 248     sysMetrics[SM_SLOWMACHINE] = 0;
 249
 250     /* FIXME: Should perform a check */
 251     sysMetrics[SM_MIDEASTENABLED] = 0;
 252
 253     sysMetrics[SM_MOUSEWHEELPRESENT] = 0;
 254
 255     sysMetrics[SM_CXVIRTUALSCREEN] = sysMetrics[SM_CXSCREEN];
 256     sysMetrics[SM_CYVIRTUALSCREEN] = sysMetrics[SM_CYSCREEN];
 257     sysMetrics[SM_XVIRTUALSCREEN] = 0;
 258     sysMetrics[SM_YVIRTUALSCREEN] = 0;
 259     sysMetrics[SM_CMONITORS] = 1;
 260     sysMetrics[SM_SAMEDISPLAYFORMAT] = 1;
 261     sysMetrics[SM_CMETRICS] = SM_CMETRICS;
 262
 263     SystemParametersInfoA( SPI_GETSHOWSOUNDS, 0, &sysMetrics[SM_SHOWSOUNDS], 0 );
 264
 265     if (hkey) RegCloseKey (hkey);
 266     DeleteDC( hdc );
 267 }
 268
 269
 270 /***********************************************************************
 271  *              SYSMETRICS_Set
 272  *
 273  *  Sets system metrics.
 274  */
 275 INT SYSMETRICS_Set( INT index, INT value )
 276 {
 277     if ((index < 0) || (index > SM_WINE_CMETRICS)) return 0;
 278     else
 279     {
 280         INT prev = sysMetrics[index];
 281         sysMetrics[index] = value;
 282         return prev;
 283     }
 284 }
 285
 286
 287 /***********************************************************************
 288  *              GetSystemMetrics (USER.179)
 289  */
 290 INT16 WINAPI GetSystemMetrics16( INT16 index )
 291 {
 292     return (INT16)GetSystemMetrics(index);
 293 }
 294
 295
 296 /***********************************************************************
 297  *              GetSystemMetrics (USER32.@)
 298  */
 299 INT WINAPI GetSystemMetrics( INT index )
 300 {
 301     if ((index < 0) || (index > SM_WINE_CMETRICS)) return 0;
 302     return sysMetrics[index];
 303 }