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 /*
  39  * The DDHALMODEINFO type is used to hold all the mode information.
  40  * This is done because the array of DDHALMODEINFO structures must be
  41  * created for use by DirectDraw anyway.
  42  */
  43 static struct x11drv_mode_info *dd_modes = NULL;
  44 static unsigned int dd_mode_count = 0;
  45 static unsigned int dd_max_modes = 0;
  46 /* All Windows drivers seen so far either support 32 bit depths, or 24 bit depths, but never both. So if we have
  47  * a 32 bit framebuffer, report 32 bit bpps, otherwise 24 bit ones.
  48  */
  49 static const unsigned int depths_24[]  = {8, 16, 24};
  50 static const unsigned int depths_32[]  = {8, 16, 32};
  51
  52 /* pointers to functions that actually do the hard stuff */
  53 static int (*pGetCurrentMode)(void);
  54 static LONG (*pSetCurrentMode)(int mode);
  55 static const char *handler_name;
  56
  57 /*
  58  * Set the handlers for resolution changing functions
  59  * and initialize the master list of modes
  60  */
  61 struct x11drv_mode_info *X11DRV_Settings_SetHandlers(const char *name,
  62                                                      int (*pNewGCM)(void),
  63                                                      LONG (*pNewSCM)(int),
  64                                                      unsigned int nmodes,
  65                                                      int reserve_depths)
  66 {
  67     handler_name = name;
  68     pGetCurrentMode = pNewGCM;
  69     pSetCurrentMode = pNewSCM;
  70     TRACE("Resolution settings now handled by: %s\n", name);
  71     if (reserve_depths)
  72         /* leave room for other depths */
  73         dd_max_modes = (3+1)*(nmodes);
  74     else
  75         dd_max_modes = nmodes;
  76
  77     if (dd_modes)
  78     {
  79         TRACE("Destroying old display modes array\n");
  80         HeapFree(GetProcessHeap(), 0, dd_modes);
  81     }
  82     dd_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*dd_modes) * dd_max_modes);
  83     dd_mode_count = 0;
  84     TRACE("Initialized new display modes array\n");
  85     return dd_modes;
  86 }
  87
  88 /* Add one mode to the master list */
  89 void X11DRV_Settings_AddOneMode(unsigned int width, unsigned int height, unsigned int bpp, unsigned int freq)
  90 {
  91     struct x11drv_mode_info *info = &dd_modes[dd_mode_count];
  92     DWORD dwBpp = screen_bpp;
  93     if (dd_mode_count >= dd_max_modes)
  94     {
  95         ERR("Maximum modes (%d) exceeded\n", dd_max_modes);
  96         return;
  97     }
  98     if (bpp == 0) bpp = dwBpp;
  99     info->width         = width;
 100     info->height        = height;
 101     info->refresh_rate  = freq;
 102     info->bpp           = bpp;
 103     TRACE("initialized mode %d: %dx%dx%d @%d Hz (%s)\n",
 104           dd_mode_count, width, height, bpp, freq, handler_name);
 105     dd_mode_count++;
 106 }
 107
 108 /* copy all the current modes using the other color depths */
 109 void X11DRV_Settings_AddDepthModes(void)
 110 {
 111     int i, j;
 112     int existing_modes = dd_mode_count;
 113     DWORD dwBpp = screen_bpp;
 114     const DWORD *depths = screen_bpp == 32 ? depths_32 : depths_24;
 115
 116     for (j=0; j<3; j++)
 117     {
 118         if (depths[j] != dwBpp)
 119         {
 120             for (i=0; i < existing_modes; i++)
 121             {
 122                 X11DRV_Settings_AddOneMode(dd_modes[i].width, dd_modes[i].height,
 123                                            depths[j], dd_modes[i].refresh_rate);
 124             }
 125         }
 126     }
 127 }
 128
 129 /* return the number of modes that are initialized */
 130 unsigned int X11DRV_Settings_GetModeCount(void)
 131 {
 132     return dd_mode_count;
 133 }
 134
 135 /***********************************************************************
 136  * Default handlers if resolution switching is not enabled
 137  *
 138  */
 139 static int X11DRV_nores_GetCurrentMode(void)
 140 {
 141     return 0;
 142 }
 143
 144 static LONG X11DRV_nores_SetCurrentMode(int mode)
 145 {
 146     if (mode == 0) return DISP_CHANGE_SUCCESSFUL;
 147     TRACE("Ignoring mode change request mode=%d\n", mode);
 148     return DISP_CHANGE_FAILED;
 149 }
 150
 151 /* default handler only gets the current X desktop resolution */
 152 void X11DRV_Settings_Init(void)
 153 {
 154     X11DRV_Settings_SetHandlers("NoRes",
 155                                 X11DRV_nores_GetCurrentMode,
 156                                 X11DRV_nores_SetCurrentMode,
 157                                 1, 0);
 158     X11DRV_Settings_AddOneMode(screen_width, screen_height, 0, 60);
 159 }
 160
 161 static BOOL get_display_device_reg_key(char *key, unsigned len)
 162 {
 163     static const char display_device_guid_prop[] = "__wine_display_device_guid";
 164     static const char video_path[] = "System\\CurrentControlSet\\Control\\Video\\{";
 165     static const char display0[] = "}\\0000";
 166     ATOM guid_atom;
 167
 168     assert(len >= sizeof(video_path) + sizeof(display0) + 40);
 169
 170     guid_atom = HandleToULong(GetPropA(GetDesktopWindow(), display_device_guid_prop));
 171     if (!guid_atom) return FALSE;
 172
 173     memcpy(key, video_path, sizeof(video_path));
 174
 175     if (!GlobalGetAtomNameA(guid_atom, key + strlen(key), 40))
 176         return FALSE;
 177
 178     strcat(key, display0);
 179
 180     TRACE("display device key %s\n", wine_dbgstr_a(key));
 181     return TRUE;
 182 }
 183
 184 static BOOL read_registry_settings(DEVMODEW *dm)
 185 {
 186     char wine_x11_reg_key[128];
 187     HKEY hkey;
 188     DWORD type, size;
 189     BOOL ret = TRUE;
 190
 191     dm->dmFields = 0;
 192
 193     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 194         return FALSE;
 195
 196     if (RegOpenKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, KEY_READ, &hkey))
 197         return FALSE;
 198
 199 #define query_value(name, data) \
 200     size = sizeof(DWORD); \
 201     if (RegQueryValueExA(hkey, name, 0, &type, (LPBYTE)(data), &size) || \
 202         type != REG_DWORD || size != sizeof(DWORD)) \
 203         ret = FALSE
 204
 205     query_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 206     dm->dmFields |= DM_BITSPERPEL;
 207     query_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 208     dm->dmFields |= DM_PELSWIDTH;
 209     query_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 210     dm->dmFields |= DM_PELSHEIGHT;
 211     query_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 212     dm->dmFields |= DM_DISPLAYFREQUENCY;
 213     query_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 214     dm->dmFields |= DM_DISPLAYFLAGS;
 215     query_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 216     query_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 217     query_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 218     query_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 219
 220 #undef query_value
 221
 222     RegCloseKey(hkey);
 223     return ret;
 224 }
 225
 226 static BOOL write_registry_settings(const DEVMODEW *dm)
 227 {
 228     char wine_x11_reg_key[128];
 229     HKEY hkey;
 230     BOOL ret = TRUE;
 231
 232     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 233         return FALSE;
 234
 235     if (RegCreateKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, NULL,
 236                         REG_OPTION_VOLATILE, KEY_WRITE, NULL, &hkey, NULL))
 237         return FALSE;
 238
 239 #define set_value(name, data) \
 240     if (RegSetValueExA(hkey, name, 0, REG_DWORD, (const BYTE*)(data), sizeof(DWORD))) \
 241         ret = FALSE
 242
 243     set_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 244     set_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 245     set_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 246     set_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 247     set_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 248     set_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 249     set_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 250     set_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 251     set_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 252
 253 #undef set_value
 254
 255     RegCloseKey(hkey);
 256     return ret;
 257 }
 258
 259 /***********************************************************************
 260  *              EnumDisplaySettingsEx  (X11DRV.@)
 261  *
 262  */
 263 BOOL CDECL X11DRV_EnumDisplaySettingsEx( LPCWSTR name, DWORD n, LPDEVMODEW devmode, DWORD flags)
 264 {
 265     static const WCHAR dev_name[CCHDEVICENAME] =
 266         { 'W','i','n','e',' ','X','1','1',' ','d','r','i','v','e','r',0 };
 267
 268     devmode->dmSize = FIELD_OFFSET(DEVMODEW, dmICMMethod);
 269     devmode->dmSpecVersion = DM_SPECVERSION;
 270     devmode->dmDriverVersion = DM_SPECVERSION;
 271     memcpy(devmode->dmDeviceName, dev_name, sizeof(dev_name));
 272     devmode->dmDriverExtra = 0;
 273     devmode->u2.dmDisplayFlags = 0;
 274     devmode->dmDisplayFrequency = 0;
 275     devmode->u1.s2.dmPosition.x = 0;
 276     devmode->u1.s2.dmPosition.y = 0;
 277     devmode->u1.s2.dmDisplayOrientation = 0;
 278     devmode->u1.s2.dmDisplayFixedOutput = 0;
 279
 280     if (n == ENUM_CURRENT_SETTINGS)
 281     {
 282         TRACE("mode %d (current) -- getting current mode (%s)\n", n, handler_name);
 283         n = pGetCurrentMode();
 284     }
 285     if (n == ENUM_REGISTRY_SETTINGS)
 286     {
 287         TRACE("mode %d (registry) -- getting default mode (%s)\n", n, handler_name);
 288         return read_registry_settings(devmode);
 289     }
 290     if (n < dd_mode_count)
 291     {
 292         devmode->dmPelsWidth = dd_modes[n].width;
 293         devmode->dmPelsHeight = dd_modes[n].height;
 294         devmode->dmBitsPerPel = dd_modes[n].bpp;
 295         devmode->dmDisplayFrequency = dd_modes[n].refresh_rate;
 296         devmode->dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL |
 297                             DM_DISPLAYFLAGS;
 298         if (devmode->dmDisplayFrequency)
 299         {
 300             devmode->dmFields |= DM_DISPLAYFREQUENCY;
 301             TRACE("mode %d -- %dx%dx%dbpp @%d Hz (%s)\n", n,
 302                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 303                   devmode->dmDisplayFrequency, handler_name);
 304         }
 305         else
 306         {
 307             TRACE("mode %d -- %dx%dx%dbpp (%s)\n", n,
 308                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 309                   handler_name);
 310         }
 311         return TRUE;
 312     }
 313     TRACE("mode %d -- not present (%s)\n", n, handler_name);
 314     SetLastError(ERROR_NO_MORE_FILES);
 315     return FALSE;
 316 }
 317
 318 #define _X_FIELD(prefix, bits) if ((fields) & prefix##_##bits) {p+=sprintf(p, "%s%s", first ? "" : ",", #bits); first=FALSE;}
 319 static const char * _CDS_flags(DWORD fields)
 320 {
 321     BOOL first = TRUE;
 322     char buf[128];
 323     char *p = buf;
 324     _X_FIELD(CDS,UPDATEREGISTRY);_X_FIELD(CDS,TEST);_X_FIELD(CDS,FULLSCREEN);
 325     _X_FIELD(CDS,GLOBAL);_X_FIELD(CDS,SET_PRIMARY);_X_FIELD(CDS,RESET);
 326     _X_FIELD(CDS,SETRECT);_X_FIELD(CDS,NORESET);
 327     *p = 0;
 328     return wine_dbg_sprintf("%s", buf);
 329 }
 330 static const char * _DM_fields(DWORD fields)
 331 {
 332     BOOL first = TRUE;
 333     char buf[128];
 334     char *p = buf;
 335     _X_FIELD(DM,BITSPERPEL);_X_FIELD(DM,PELSWIDTH);_X_FIELD(DM,PELSHEIGHT);
 336     _X_FIELD(DM,DISPLAYFLAGS);_X_FIELD(DM,DISPLAYFREQUENCY);_X_FIELD(DM,POSITION);
 337     *p = 0;
 338     return wine_dbg_sprintf("%s", buf);
 339 }
 340 #undef _X_FIELD
 341
 342 /***********************************************************************
 343  *              ChangeDisplaySettingsEx  (X11DRV.@)
 344  *
 345  */
 346 LONG CDECL X11DRV_ChangeDisplaySettingsEx( LPCWSTR devname, LPDEVMODEW devmode,
 347                                            HWND hwnd, DWORD flags, LPVOID lpvoid )
 348 {
 349     DWORD i, dwBpp = 0;
 350     DEVMODEW dm;
 351     BOOL def_mode = TRUE;
 352
 353     TRACE("(%s,%p,%p,0x%08x,%p)\n",debugstr_w(devname),devmode,hwnd,flags,lpvoid);
 354     TRACE("flags=%s\n",_CDS_flags(flags));
 355     if (devmode)
 356     {
 357         /* this is the minimal dmSize that XP accepts */
 358         if (devmode->dmSize < FIELD_OFFSET(DEVMODEW, dmFields))
 359             return DISP_CHANGE_FAILED;
 360
 361         TRACE("DM_fields=%s\n",_DM_fields(devmode->dmFields));
 362         TRACE("width=%d height=%d bpp=%d freq=%d (%s)\n",
 363               devmode->dmPelsWidth,devmode->dmPelsHeight,
 364               devmode->dmBitsPerPel,devmode->dmDisplayFrequency, handler_name);
 365
 366         dwBpp = devmode->dmBitsPerPel;
 367         if (devmode->dmFields & DM_BITSPERPEL) def_mode &= !dwBpp;
 368         if (devmode->dmFields & DM_PELSWIDTH)  def_mode &= !devmode->dmPelsWidth;
 369         if (devmode->dmFields & DM_PELSHEIGHT) def_mode &= !devmode->dmPelsHeight;
 370         if (devmode->dmFields & DM_DISPLAYFREQUENCY) def_mode &= !devmode->dmDisplayFrequency;
 371     }
 372
 373     if (def_mode || !dwBpp)
 374     {
 375         if (!X11DRV_EnumDisplaySettingsEx(devname, ENUM_REGISTRY_SETTINGS, &dm, 0))
 376         {
 377             ERR("Default mode not found!\n");
 378             return DISP_CHANGE_BADMODE;
 379         }
 380         if (def_mode)
 381         {
 382             TRACE("Return to original display mode (%s)\n", handler_name);
 383             devmode = &dm;
 384         }
 385         dwBpp = dm.dmBitsPerPel;
 386     }
 387
 388     if ((devmode->dmFields & (DM_PELSWIDTH | DM_PELSHEIGHT)) != (DM_PELSWIDTH | DM_PELSHEIGHT))
 389     {
 390         WARN("devmode doesn't specify the resolution: %04x\n", devmode->dmFields);
 391         return DISP_CHANGE_BADMODE;
 392     }
 393
 394     for (i = 0; i < dd_mode_count; i++)
 395     {
 396         if (devmode->dmFields & DM_BITSPERPEL)
 397         {
 398             if (dwBpp != dd_modes[i].bpp)
 399                 continue;
 400         }
 401         if (devmode->dmFields & DM_PELSWIDTH)
 402         {
 403             if (devmode->dmPelsWidth != dd_modes[i].width)
 404                 continue;
 405         }
 406         if (devmode->dmFields & DM_PELSHEIGHT)
 407         {
 408             if (devmode->dmPelsHeight != dd_modes[i].height)
 409                 continue;
 410         }
 411         if ((devmode->dmFields & DM_DISPLAYFREQUENCY) && (dd_modes[i].refresh_rate != 0) &&
 412             devmode->dmDisplayFrequency != 0)
 413         {
 414             if (devmode->dmDisplayFrequency != dd_modes[i].refresh_rate)
 415                 continue;
 416         }
 417         /* we have a valid mode */
 418         TRACE("Requested display settings match mode %d (%s)\n", i, handler_name);
 419
 420         if (flags & CDS_UPDATEREGISTRY)
 421             write_registry_settings(devmode);
 422
 423         if (!(flags & (CDS_TEST | CDS_NORESET)))
 424             return pSetCurrentMode(i);
 425
 426         return DISP_CHANGE_SUCCESSFUL;
 427     }
 428
 429     /* no valid modes found */
 430     ERR("No matching mode found %ux%ux%u @%u! (%s)\n",
 431         devmode->dmPelsWidth, devmode->dmPelsHeight,
 432         devmode->dmBitsPerPel, devmode->dmDisplayFrequency, handler_name);
 433     return DISP_CHANGE_BADMODE;
 434 }