windows/sysmetrics.c

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