dlls/winex11.drv/settings.c

   1 /*
   2  * Wine X11drv display settings functions
   3  *
   4  * Copyright 2003 Alexander James Pasadyn
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <assert.h>
  25
  26 #define NONAMELESSUNION
  27 #define NONAMELESSSTRUCT
  28
  29 #include "x11drv.h"
  30
  31 #include "windef.h"
  32 #include "winreg.h"
  33 #include "wingdi.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(x11settings);
  37
  38 static struct x11drv_mode_info *dd_modes = NULL;
  39 static unsigned int dd_mode_count = 0;
  40 static unsigned int dd_max_modes = 0;
  41 /* All Windows drivers seen so far either support 32 bit depths, or 24 bit depths, but never both. So if we have
  42  * a 32 bit framebuffer, report 32 bit bpps, otherwise 24 bit ones.
  43  */
  44 static const unsigned int depths_24[]  = {8, 16, 24};
  45 static const unsigned int depths_32[]  = {8, 16, 32};
  46
  47 /* pointers to functions that actually do the hard stuff */
  48 static int (*pGetCurrentMode)(void);
  49 static LONG (*pSetCurrentMode)(int mode);
  50 static const char *handler_name;
  51
  52 /*
  53  * Set the handlers for resolution changing functions
  54  * and initialize the master list of modes
  55  */
  56 struct x11drv_mode_info *X11DRV_Settings_SetHandlers(const char *name,
  57                                                      int (*pNewGCM)(void),
  58                                                      LONG (*pNewSCM)(int),
  59                                                      unsigned int nmodes,
  60                                                      int reserve_depths)
  61 {
  62     handler_name = name;
  63     pGetCurrentMode = pNewGCM;
  64     pSetCurrentMode = pNewSCM;
  65     TRACE("Resolution settings now handled by: %s\n", name);
  66     if (reserve_depths)
  67         /* leave room for other depths */
  68         dd_max_modes = (3+1)*(nmodes);
  69     else
  70         dd_max_modes = nmodes;
  71
  72     if (dd_modes)
  73     {
  74         TRACE("Destroying old display modes array\n");
  75         HeapFree(GetProcessHeap(), 0, dd_modes);
  76     }
  77     dd_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*dd_modes) * dd_max_modes);
  78     dd_mode_count = 0;
  79     TRACE("Initialized new display modes array\n");
  80     return dd_modes;
  81 }
  82
  83 /* Add one mode to the master list */
  84 void X11DRV_Settings_AddOneMode(unsigned int width, unsigned int height, unsigned int bpp, unsigned int freq)
  85 {
  86     struct x11drv_mode_info *info = &dd_modes[dd_mode_count];
  87     DWORD dwBpp = screen_bpp;
  88     if (dd_mode_count >= dd_max_modes)
  89     {
  90         ERR("Maximum modes (%d) exceeded\n", dd_max_modes);
  91         return;
  92     }
  93     if (bpp == 0) bpp = dwBpp;
  94     info->width         = width;
  95     info->height        = height;
  96     info->refresh_rate  = freq;
  97     info->bpp           = bpp;
  98     TRACE("initialized mode %d: %dx%dx%d @%d Hz (%s)\n",
  99           dd_mode_count, width, height, bpp, freq, handler_name);
 100     dd_mode_count++;
 101 }
 102
 103 /* copy all the current modes using the other color depths */
 104 void X11DRV_Settings_AddDepthModes(void)
 105 {
 106     int i, j;
 107     int existing_modes = dd_mode_count;
 108     DWORD dwBpp = screen_bpp;
 109     const DWORD *depths = screen_bpp == 32 ? depths_32 : depths_24;
 110
 111     for (j=0; j<3; j++)
 112     {
 113         if (depths[j] != dwBpp)
 114         {
 115             for (i=0; i < existing_modes; i++)
 116             {
 117                 X11DRV_Settings_AddOneMode(dd_modes[i].width, dd_modes[i].height,
 118                                            depths[j], dd_modes[i].refresh_rate);
 119             }
 120         }
 121     }
 122 }
 123
 124 /* return the number of modes that are initialized */
 125 unsigned int X11DRV_Settings_GetModeCount(void)
 126 {
 127     return dd_mode_count;
 128 }
 129
 130 /***********************************************************************
 131  * Default handlers if resolution switching is not enabled
 132  *
 133  */
 134 static int X11DRV_nores_GetCurrentMode(void)
 135 {
 136     return 0;
 137 }
 138
 139 static LONG X11DRV_nores_SetCurrentMode(int mode)
 140 {
 141     if (mode == 0) return DISP_CHANGE_SUCCESSFUL;
 142     TRACE("Ignoring mode change request mode=%d\n", mode);
 143     return DISP_CHANGE_FAILED;
 144 }
 145
 146 /* default handler only gets the current X desktop resolution */
 147 void X11DRV_Settings_Init(void)
 148 {
 149     X11DRV_Settings_SetHandlers("NoRes",
 150                                 X11DRV_nores_GetCurrentMode,
 151                                 X11DRV_nores_SetCurrentMode,
 152                                 1, 0);
 153     X11DRV_Settings_AddOneMode(screen_width, screen_height, 0, 60);
 154 }
 155
 156 static BOOL get_display_device_reg_key(char *key, unsigned len)
 157 {
 158     static const char display_device_guid_prop[] = "__wine_display_device_guid";
 159     static const char video_path[] = "System\\CurrentControlSet\\Control\\Video\\{";
 160     static const char display0[] = "}\\0000";
 161     ATOM guid_atom;
 162
 163     assert(len >= sizeof(video_path) + sizeof(display0) + 40);
 164
 165     guid_atom = HandleToULong(GetPropA(GetDesktopWindow(), display_device_guid_prop));
 166     if (!guid_atom) return FALSE;
 167
 168     memcpy(key, video_path, sizeof(video_path));
 169
 170     if (!GlobalGetAtomNameA(guid_atom, key + strlen(key), 40))
 171         return FALSE;
 172
 173     strcat(key, display0);
 174
 175     TRACE("display device key %s\n", wine_dbgstr_a(key));
 176     return TRUE;
 177 }
 178
 179 static BOOL read_registry_settings(DEVMODEW *dm)
 180 {
 181     char wine_x11_reg_key[128];
 182     HKEY hkey;
 183     DWORD type, size;
 184     BOOL ret = TRUE;
 185
 186     dm->dmFields = 0;
 187
 188     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 189         return FALSE;
 190
 191     if (RegOpenKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, KEY_READ, &hkey))
 192         return FALSE;
 193
 194 #define query_value(name, data) \
 195     size = sizeof(DWORD); \
 196     if (RegQueryValueExA(hkey, name, 0, &type, (LPBYTE)(data), &size) || \
 197         type != REG_DWORD || size != sizeof(DWORD)) \
 198         ret = FALSE
 199
 200     query_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 201     dm->dmFields |= DM_BITSPERPEL;
 202     query_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 203     dm->dmFields |= DM_PELSWIDTH;
 204     query_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 205     dm->dmFields |= DM_PELSHEIGHT;
 206     query_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 207     dm->dmFields |= DM_DISPLAYFREQUENCY;
 208     query_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 209     dm->dmFields |= DM_DISPLAYFLAGS;
 210     query_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 211     query_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 212     query_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 213     query_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 214
 215 #undef query_value
 216
 217     RegCloseKey(hkey);
 218     return ret;
 219 }
 220
 221 static BOOL write_registry_settings(const DEVMODEW *dm)
 222 {
 223     char wine_x11_reg_key[128];
 224     HKEY hkey;
 225     BOOL ret = TRUE;
 226
 227     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 228         return FALSE;
 229
 230     if (RegCreateKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, NULL,
 231                         REG_OPTION_VOLATILE, KEY_WRITE, NULL, &hkey, NULL))
 232         return FALSE;
 233
 234 #define set_value(name, data) \
 235     if (RegSetValueExA(hkey, name, 0, REG_DWORD, (const BYTE*)(data), sizeof(DWORD))) \
 236         ret = FALSE
 237
 238     set_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 239     set_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 240     set_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 241     set_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 242     set_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 243     set_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 244     set_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 245     set_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 246     set_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 247
 248 #undef set_value
 249
 250     RegCloseKey(hkey);
 251     return ret;
 252 }
 253
 254 /***********************************************************************
 255  *              EnumDisplaySettingsEx  (X11DRV.@)
 256  *
 257  */
 258 BOOL CDECL X11DRV_EnumDisplaySettingsEx( LPCWSTR name, DWORD n, LPDEVMODEW devmode, DWORD flags)
 259 {
 260     static const WCHAR dev_name[CCHDEVICENAME] =
 261         { 'W','i','n','e',' ','X','1','1',' ','d','r','i','v','e','r',0 };
 262
 263     devmode->dmSize = FIELD_OFFSET(DEVMODEW, dmICMMethod);
 264     devmode->dmSpecVersion = DM_SPECVERSION;
 265     devmode->dmDriverVersion = DM_SPECVERSION;
 266     memcpy(devmode->dmDeviceName, dev_name, sizeof(dev_name));
 267     devmode->dmDriverExtra = 0;
 268     devmode->u2.dmDisplayFlags = 0;
 269     devmode->dmDisplayFrequency = 0;
 270     devmode->u1.s2.dmPosition.x = 0;
 271     devmode->u1.s2.dmPosition.y = 0;
 272     devmode->u1.s2.dmDisplayOrientation = 0;
 273     devmode->u1.s2.dmDisplayFixedOutput = 0;
 274
 275     if (n == ENUM_CURRENT_SETTINGS)
 276     {
 277         TRACE("mode %d (current) -- getting current mode (%s)\n", n, handler_name);
 278         n = pGetCurrentMode();
 279     }
 280     if (n == ENUM_REGISTRY_SETTINGS)
 281     {
 282         TRACE("mode %d (registry) -- getting default mode (%s)\n", n, handler_name);
 283         return read_registry_settings(devmode);
 284     }
 285     if (n < dd_mode_count)
 286     {
 287         devmode->dmPelsWidth = dd_modes[n].width;
 288         devmode->dmPelsHeight = dd_modes[n].height;
 289         devmode->dmBitsPerPel = dd_modes[n].bpp;
 290         devmode->dmDisplayFrequency = dd_modes[n].refresh_rate;
 291         devmode->dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL |
 292                             DM_DISPLAYFLAGS;
 293         if (devmode->dmDisplayFrequency)
 294         {
 295             devmode->dmFields |= DM_DISPLAYFREQUENCY;
 296             TRACE("mode %d -- %dx%dx%dbpp @%d Hz (%s)\n", n,
 297                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 298                   devmode->dmDisplayFrequency, handler_name);
 299         }
 300         else
 301         {
 302             TRACE("mode %d -- %dx%dx%dbpp (%s)\n", n,
 303                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 304                   handler_name);
 305         }
 306         return TRUE;
 307     }
 308     TRACE("mode %d -- not present (%s)\n", n, handler_name);
 309     SetLastError(ERROR_NO_MORE_FILES);
 310     return FALSE;
 311 }
 312
 313 #define _X_FIELD(prefix, bits) if ((fields) & prefix##_##bits) {p+=sprintf(p, "%s%s", first ? "" : ",", #bits); first=FALSE;}
 314 static const char * _CDS_flags(DWORD fields)
 315 {
 316     BOOL first = TRUE;
 317     char buf[128];
 318     char *p = buf;
 319     _X_FIELD(CDS,UPDATEREGISTRY);_X_FIELD(CDS,TEST);_X_FIELD(CDS,FULLSCREEN);
 320     _X_FIELD(CDS,GLOBAL);_X_FIELD(CDS,SET_PRIMARY);_X_FIELD(CDS,RESET);
 321     _X_FIELD(CDS,SETRECT);_X_FIELD(CDS,NORESET);
 322     *p = 0;
 323     return wine_dbg_sprintf("%s", buf);
 324 }
 325 static const char * _DM_fields(DWORD fields)
 326 {
 327     BOOL first = TRUE;
 328     char buf[128];
 329     char *p = buf;
 330     _X_FIELD(DM,BITSPERPEL);_X_FIELD(DM,PELSWIDTH);_X_FIELD(DM,PELSHEIGHT);
 331     _X_FIELD(DM,DISPLAYFLAGS);_X_FIELD(DM,DISPLAYFREQUENCY);_X_FIELD(DM,POSITION);
 332     *p = 0;
 333     return wine_dbg_sprintf("%s", buf);
 334 }
 335 #undef _X_FIELD
 336
 337 /***********************************************************************
 338  *              ChangeDisplaySettingsEx  (X11DRV.@)
 339  *
 340  */
 341 LONG CDECL X11DRV_ChangeDisplaySettingsEx( LPCWSTR devname, LPDEVMODEW devmode,
 342                                            HWND hwnd, DWORD flags, LPVOID lpvoid )
 343 {
 344     DWORD i, dwBpp = 0;
 345     DEVMODEW dm;
 346     BOOL def_mode = TRUE;
 347
 348     TRACE("(%s,%p,%p,0x%08x,%p)\n",debugstr_w(devname),devmode,hwnd,flags,lpvoid);
 349     TRACE("flags=%s\n",_CDS_flags(flags));
 350     if (devmode)
 351     {
 352         /* this is the minimal dmSize that XP accepts */
 353         if (devmode->dmSize < FIELD_OFFSET(DEVMODEW, dmFields))
 354             return DISP_CHANGE_FAILED;
 355
 356         TRACE("DM_fields=%s\n",_DM_fields(devmode->dmFields));
 357         TRACE("width=%d height=%d bpp=%d freq=%d (%s)\n",
 358               devmode->dmPelsWidth,devmode->dmPelsHeight,
 359               devmode->dmBitsPerPel,devmode->dmDisplayFrequency, handler_name);
 360
 361         dwBpp = devmode->dmBitsPerPel;
 362         if (devmode->dmFields & DM_BITSPERPEL) def_mode &= !dwBpp;
 363         if (devmode->dmFields & DM_PELSWIDTH)  def_mode &= !devmode->dmPelsWidth;
 364         if (devmode->dmFields & DM_PELSHEIGHT) def_mode &= !devmode->dmPelsHeight;
 365         if (devmode->dmFields & DM_DISPLAYFREQUENCY) def_mode &= !devmode->dmDisplayFrequency;
 366     }
 367
 368     if (def_mode || !dwBpp)
 369     {
 370         if (!X11DRV_EnumDisplaySettingsEx(devname, ENUM_REGISTRY_SETTINGS, &dm, 0))
 371         {
 372             ERR("Default mode not found!\n");
 373             return DISP_CHANGE_BADMODE;
 374         }
 375         if (def_mode)
 376         {
 377             TRACE("Return to original display mode (%s)\n", handler_name);
 378             devmode = &dm;
 379         }
 380         dwBpp = dm.dmBitsPerPel;
 381     }
 382
 383     if ((devmode->dmFields & (DM_PELSWIDTH | DM_PELSHEIGHT)) != (DM_PELSWIDTH | DM_PELSHEIGHT))
 384     {
 385         WARN("devmode doesn't specify the resolution: %04x\n", devmode->dmFields);
 386         return DISP_CHANGE_BADMODE;
 387     }
 388
 389     for (i = 0; i < dd_mode_count; i++)
 390     {
 391         if (devmode->dmFields & DM_BITSPERPEL)
 392         {
 393             if (dwBpp != dd_modes[i].bpp)
 394                 continue;
 395         }
 396         if (devmode->dmFields & DM_PELSWIDTH)
 397         {
 398             if (devmode->dmPelsWidth != dd_modes[i].width)
 399                 continue;
 400         }
 401         if (devmode->dmFields & DM_PELSHEIGHT)
 402         {
 403             if (devmode->dmPelsHeight != dd_modes[i].height)
 404                 continue;
 405         }
 406         if ((devmode->dmFields & DM_DISPLAYFREQUENCY) && (dd_modes[i].refresh_rate != 0) &&
 407             devmode->dmDisplayFrequency != 0)
 408         {
 409             if (devmode->dmDisplayFrequency != dd_modes[i].refresh_rate)
 410                 continue;
 411         }
 412         /* we have a valid mode */
 413         TRACE("Requested display settings match mode %d (%s)\n", i, handler_name);
 414
 415         if (flags & CDS_UPDATEREGISTRY)
 416             write_registry_settings(devmode);
 417
 418         if (!(flags & (CDS_TEST | CDS_NORESET)))
 419             return pSetCurrentMode(i);
 420
 421         return DISP_CHANGE_SUCCESSFUL;
 422     }
 423
 424     /* no valid modes found */
 425     ERR("No matching mode found %ux%ux%u @%u! (%s)\n",
 426         devmode->dmPelsWidth, devmode->dmPelsHeight,
 427         devmode->dmBitsPerPel, devmode->dmDisplayFrequency, handler_name);
 428     return DISP_CHANGE_BADMODE;
 429 }