git.oblomov.eu Git - wine/blob - dlls/ddraw/dsurface/user.c

   1 /*      User-based primary surface driver
   2  *
   3  * Copyright 2000-2001 TransGaming Technologies Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <assert.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "winerror.h"
  27 #include "wine/debug.h"
  28 #include "ddraw_private.h"
  29 #include "dsurface/main.h"
  30 #include "dsurface/dib.h"
  31 #include "dsurface/user.h"
  32 #include "dsurface/wndproc.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  35
  36 /* if you use OWN_WINDOW, don't use SYNC_UPDATE, or you may get trouble */
  37 /* #define SYNC_UPDATE */
  38 /*
  39  * FIXME: This does not work any more because the created window has its own
  40  *        thread queue that cannot be manipulated by application threads.
  41  * #define OWN_WINDOW
  42  */
  43
  44 #ifdef OWN_WINDOW
  45 static void User_create_own_window(IDirectDrawSurfaceImpl* This);
  46 static void User_destroy_own_window(IDirectDrawSurfaceImpl* This);
  47 #endif
  48 #ifndef SYNC_UPDATE
  49 static DWORD CALLBACK User_update_thread(LPVOID);
  50 #endif
  51 static void User_copy_to_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc);
  52
  53 static HWND get_display_window(IDirectDrawSurfaceImpl* This, LPPOINT pt);
  54
  55 static ICOM_VTABLE(IDirectDrawSurface7) User_IDirectDrawSurface7_VTable;
  56
  57 HRESULT
  58 User_DirectDrawSurface_Construct(IDirectDrawSurfaceImpl* This,
  59                                  IDirectDrawImpl* pDD,
  60                                  const DDSURFACEDESC2* pDDSD)
  61 {
  62     USER_PRIV_VAR(priv, This);
  63     HRESULT hr;
  64
  65     TRACE("(%p,%p,%p)\n",This,pDD,pDDSD);
  66     hr = DIB_DirectDrawSurface_Construct(This, pDD, pDDSD);
  67     if (FAILED(hr)) return hr;
  68
  69     ICOM_INIT_INTERFACE(This, IDirectDrawSurface7,
  70                         User_IDirectDrawSurface7_VTable);
  71
  72     This->final_release = User_DirectDrawSurface_final_release;
  73     This->duplicate_surface = User_DirectDrawSurface_duplicate_surface;
  74
  75     This->lock_update   = User_DirectDrawSurface_lock_update;
  76     This->unlock_update = User_DirectDrawSurface_unlock_update;
  77
  78     This->flip_data   = User_DirectDrawSurface_flip_data;
  79     This->flip_update = User_DirectDrawSurface_flip_update;
  80
  81     This->get_dc     = User_DirectDrawSurface_get_dc;
  82     This->release_dc = User_DirectDrawSurface_release_dc;
  83
  84     This->set_palette    = User_DirectDrawSurface_set_palette;
  85     This->update_palette = User_DirectDrawSurface_update_palette;
  86
  87     This->get_gamma_ramp = User_DirectDrawSurface_get_gamma_ramp;
  88     This->set_gamma_ramp = User_DirectDrawSurface_set_gamma_ramp;
  89
  90     This->get_display_window = User_DirectDrawSurface_get_display_window;
  91
  92     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
  93     {
  94 #ifdef OWN_WINDOW
  95         DirectDrawSurface_RegisterClass();
  96 #endif
  97 #ifndef SYNC_UPDATE
  98         InitializeCriticalSection(&priv->user.crit);
  99         priv->user.refresh_event = CreateEventA(NULL, TRUE, FALSE, NULL);
 100         priv->user.update_event = CreateEventA(NULL, FALSE, FALSE, NULL);
 101         priv->user.update_thread = CreateThread(NULL, 0, User_update_thread, This, 0, NULL);
 102 #ifdef OWN_WINDOW
 103         if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN) {
 104             /* wait for window creation (or update thread destruction) */
 105             while (WaitForMultipleObjects(1, &priv->user.update_thread, FALSE, 100) == WAIT_TIMEOUT)
 106                 if (This->more.lpDDRAWReserved) break;
 107             if (!This->more.lpDDRAWReserved) {
 108                 ERR("window creation failed\n");
 109             }
 110         }
 111 #endif
 112 #else
 113 #ifdef OWN_WINDOW
 114         User_create_own_window(This);
 115 #endif
 116 #endif
 117         if (!This->more.lpDDRAWReserved)
 118             This->more.lpDDRAWReserved = (LPVOID)pDD->window;
 119     }
 120
 121     return DIB_DirectDrawSurface_alloc_dc(This, &priv->user.cached_dc);
 122 }
 123
 124 HRESULT
 125 User_DirectDrawSurface_Create(IDirectDrawImpl *pDD,
 126                               const DDSURFACEDESC2 *pDDSD,
 127                               LPDIRECTDRAWSURFACE7 *ppSurf,
 128                               IUnknown *pUnkOuter)
 129 {
 130     IDirectDrawSurfaceImpl* This;
 131     HRESULT hr;
 132     assert(pUnkOuter == NULL);
 133
 134     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 135                      sizeof(*This) + sizeof(User_DirectDrawSurfaceImpl));
 136     if (This == NULL) return E_OUTOFMEMORY;
 137
 138     This->private = (User_DirectDrawSurfaceImpl*)(This+1);
 139
 140     hr = User_DirectDrawSurface_Construct(This, pDD, pDDSD);
 141     if (FAILED(hr))
 142         HeapFree(GetProcessHeap(), 0, This);
 143     else
 144         *ppSurf = ICOM_INTERFACE(This, IDirectDrawSurface7);
 145
 146     return hr;
 147 }
 148
 149 void User_DirectDrawSurface_final_release(IDirectDrawSurfaceImpl* This)
 150 {
 151     USER_PRIV_VAR(priv, This);
 152
 153     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 154     {
 155 #ifndef SYNC_UPDATE
 156         HANDLE event = priv->user.update_event;
 157         priv->user.update_event = 0;
 158         SetEvent(event);
 159         TRACE("waiting for update thread to terminate...\n");
 160 #ifdef OWN_WINDOW
 161         /* dispatch any waiting sendmessages */
 162         {
 163             MSG msg;
 164             PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE);
 165         }
 166         /* to avoid deadlocks, allow SendMessages from update thread
 167          * through while we wait for it */
 168         while (MsgWaitForMultipleObjects(1, &priv->user.update_thread, FALSE,
 169                                          INFINITE, QS_SENDMESSAGE) == WAIT_OBJECT_0+1)
 170         {
 171             MSG msg;
 172             PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE);
 173         }
 174 #else
 175         WaitForSingleObject(priv->user.update_thread,INFINITE);
 176 #endif
 177         TRACE("update thread terminated\n");
 178         CloseHandle(event);
 179         CloseHandle(priv->user.update_thread);
 180         CloseHandle(priv->user.refresh_event);
 181         DeleteCriticalSection(&priv->user.crit);
 182 #else
 183 #ifdef OWN_WINDOW
 184         User_destroy_own_window(This);
 185 #endif
 186 #endif
 187         This->more.lpDDRAWReserved = 0;
 188 #ifdef OWN_WINDOW
 189         DirectDrawSurface_UnregisterClass();
 190 #endif
 191     }
 192     DIB_DirectDrawSurface_free_dc(This, priv->user.cached_dc);
 193     DIB_DirectDrawSurface_final_release(This);
 194 }
 195
 196 static int User_DirectDrawSurface_init_wait(IDirectDrawSurfaceImpl* This)
 197 {
 198     USER_PRIV_VAR(priv, This);
 199     int need_wait;
 200     EnterCriticalSection(&priv->user.crit);
 201     priv->user.wait_count++;
 202     need_wait = priv->user.in_refresh;
 203     LeaveCriticalSection(&priv->user.crit);
 204     return need_wait;
 205 }
 206
 207 static void User_DirectDrawSurface_end_wait(IDirectDrawSurfaceImpl* This)
 208 {
 209     USER_PRIV_VAR(priv, This);
 210     EnterCriticalSection(&priv->user.crit);
 211     if (!--priv->user.wait_count)
 212         ResetEvent(priv->user.refresh_event);
 213     LeaveCriticalSection(&priv->user.crit);
 214 }
 215
 216 static void User_DirectDrawSurface_wait_update(IDirectDrawSurfaceImpl* This)
 217 {
 218     USER_PRIV_VAR(priv, This);
 219     if (priv->user.in_refresh) {
 220         if (User_DirectDrawSurface_init_wait(This))
 221             WaitForSingleObject(priv->user.refresh_event, 2);
 222         User_DirectDrawSurface_end_wait(This);
 223     }
 224 }
 225
 226 void User_DirectDrawSurface_lock_update(IDirectDrawSurfaceImpl* This,
 227                                         LPCRECT pRect, DWORD dwFlags)
 228 {
 229 #if 0
 230     if (!(dwFlags & DDLOCK_WRITEONLY))
 231         User_copy_from_screen(This, pRect);
 232 #endif
 233     if (dwFlags & DDLOCK_WAIT) User_DirectDrawSurface_wait_update(This);
 234
 235     if (pRect) {
 236         This->lastlockrect = *pRect;
 237     } else {
 238         This->lastlockrect.left = This->lastlockrect.right = 0;
 239     }
 240 }
 241
 242 void User_DirectDrawSurface_unlock_update(IDirectDrawSurfaceImpl* This,
 243                                           LPCRECT pRect)
 244 {
 245     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 246     {
 247 #ifdef SYNC_UPDATE
 248         User_copy_to_screen(This, pRect);
 249 #else
 250         USER_PRIV_VAR(priv, This);
 251         SetEvent(priv->user.update_event);
 252 #endif
 253     }
 254 }
 255
 256 void User_DirectDrawSurface_set_palette(IDirectDrawSurfaceImpl* This,
 257                                         IDirectDrawPaletteImpl* pal)
 258 {
 259     USER_PRIV_VAR(priv, This);
 260
 261     if (!pal) {
 262         FIXME("selecting null palette\n");
 263         /* I don't think selecting GDI object 0 will work, we should select
 264          * the original palette, returned by the first SelectPalette */
 265         SelectPalette(priv->user.cached_dc, 0, FALSE);
 266         return;
 267     }
 268
 269     SelectPalette(priv->user.cached_dc, pal->hpal, FALSE);
 270
 271     DIB_DirectDrawSurface_set_palette(This, pal);
 272 }
 273
 274 void User_DirectDrawSurface_update_palette(IDirectDrawSurfaceImpl* This,
 275                                            IDirectDrawPaletteImpl* pal,
 276                                            DWORD dwStart, DWORD dwCount,
 277                                            LPPALETTEENTRY palent)
 278 {
 279 #ifndef SYNC_UPDATE
 280     USER_PRIV_VAR(priv, This);
 281 #endif
 282
 283     DIB_DirectDrawSurface_update_palette(This, pal, dwStart, dwCount, palent);
 284     /* FIXME: realize palette on display window */
 285
 286 #ifndef SYNC_UPDATE
 287     /* with async updates, it's probably cool to force an update */
 288     SetEvent(priv->user.update_event);
 289 #endif
 290 }
 291
 292 HRESULT User_DirectDrawSurface_duplicate_surface(IDirectDrawSurfaceImpl* This,
 293                                                  LPDIRECTDRAWSURFACE7* ppDup)
 294 {
 295     return User_DirectDrawSurface_Create(This->ddraw_owner,
 296                                          &This->surface_desc, ppDup, NULL);
 297 }
 298
 299 BOOL User_DirectDrawSurface_flip_data(IDirectDrawSurfaceImpl* front,
 300                                       IDirectDrawSurfaceImpl* back,
 301                                       DWORD dwFlags)
 302 {
 303     USER_PRIV_VAR(front_priv, front);
 304     USER_PRIV_VAR(back_priv, back);
 305
 306     {
 307         HDC tmp;
 308         tmp = front_priv->user.cached_dc;
 309         front_priv->user.cached_dc = back_priv->user.cached_dc;
 310         back_priv->user.cached_dc = tmp;
 311     }
 312
 313     return DIB_DirectDrawSurface_flip_data(front, back, dwFlags);
 314 }
 315
 316 void User_DirectDrawSurface_flip_update(IDirectDrawSurfaceImpl* This, DWORD dwFlags)
 317 {
 318 #ifdef SYNC_UPDATE
 319     This->lastlockrect.left = This->lastlockrect.right = 0;
 320     assert(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE);
 321     User_copy_to_screen(This,NULL);
 322 #else
 323     USER_PRIV_VAR(priv, This);
 324     assert(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE);
 325     if (dwFlags & DDFLIP_WAIT) User_DirectDrawSurface_wait_update(This);
 326     This->lastlockrect.left = This->lastlockrect.right = 0;
 327     SetEvent(priv->user.update_event);
 328 #endif
 329 }
 330
 331 HRESULT User_DirectDrawSurface_get_dc(IDirectDrawSurfaceImpl* This, HDC* phDC)
 332 {
 333     USER_PRIV_VAR(priv, This);
 334
 335     *phDC = priv->user.cached_dc;
 336     return S_OK;
 337 }
 338
 339 HRESULT User_DirectDrawSurface_release_dc(IDirectDrawSurfaceImpl* This,
 340                                           HDC hDC)
 341 {
 342     return S_OK;
 343 }
 344
 345 HRESULT User_DirectDrawSurface_get_gamma_ramp(IDirectDrawSurfaceImpl* This,
 346                                               DWORD dwFlags,
 347                                               LPDDGAMMARAMP lpGammaRamp)
 348 {
 349     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 350     {
 351         POINT offset;
 352         HWND hDisplayWnd;
 353         HDC hDisplayDC;
 354         HRESULT hr;
 355         hDisplayWnd = get_display_window(This, &offset);
 356         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 357         hr = GetDeviceGammaRamp(hDisplayDC, lpGammaRamp) ? DD_OK : DDERR_UNSUPPORTED;
 358         ReleaseDC(hDisplayWnd, hDisplayDC);
 359         return hr;
 360     }
 361     return Main_DirectDrawSurface_get_gamma_ramp(This, dwFlags, lpGammaRamp);
 362 }
 363
 364 HRESULT User_DirectDrawSurface_set_gamma_ramp(IDirectDrawSurfaceImpl* This,
 365                                               DWORD dwFlags,
 366                                               LPDDGAMMARAMP lpGammaRamp)
 367 {
 368     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 369     {
 370         POINT offset;
 371         HWND hDisplayWnd;
 372         HDC hDisplayDC;
 373         HRESULT hr;
 374         hDisplayWnd = get_display_window(This, &offset);
 375         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 376         hr = SetDeviceGammaRamp(hDisplayDC, lpGammaRamp) ? DD_OK : DDERR_UNSUPPORTED;
 377         ReleaseDC(hDisplayWnd, hDisplayDC);
 378         return hr;
 379     }
 380     return Main_DirectDrawSurface_set_gamma_ramp(This, dwFlags, lpGammaRamp);
 381 }
 382
 383 /* Returns the window that hosts the display.
 384  * *pt is set to the upper left position of the window relative to the
 385  * upper left corner of the surface. */
 386 static HWND get_display_window(IDirectDrawSurfaceImpl* This, LPPOINT pt)
 387 {
 388     memset(pt, 0, sizeof(*pt));
 389
 390     if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN)
 391     {
 392 #ifdef OWN_WINDOW
 393         USER_PRIV_VAR(priv, This);
 394 #if 1
 395         SetWindowPos(priv->user.window, HWND_TOP, 0, 0, 0, 0,
 396                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|
 397                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE);
 398 #endif
 399         return priv->user.window;
 400 #else
 401         return This->ddraw_owner->window;
 402 #endif
 403     }
 404     else
 405     {
 406         if (This->clipper != NULL)
 407         {
 408             /* looks silly, but since we don't have the clipper locked */
 409             HWND hWnd = This->clipper->hWnd;
 410
 411             if (hWnd != 0)
 412             {
 413                 ClientToScreen(hWnd, pt);
 414                 return hWnd;
 415             }
 416             else
 417             {
 418                 static BOOL warn = 0;
 419                 if (!warn++) FIXME("clipper clip lists not supported\n");
 420
 421                 return GetDesktopWindow();
 422             }
 423         }
 424         else
 425         {
 426             static BOOL warn = 0;
 427             if (!warn++) WARN("hosting on root\n");
 428
 429             return GetDesktopWindow();
 430         }
 431     }
 432 }
 433
 434 HWND User_DirectDrawSurface_get_display_window(IDirectDrawSurfaceImpl* This)
 435 {
 436     POINT offset;
 437     return get_display_window(This, &offset);
 438 }
 439
 440 #ifdef OWN_WINDOW
 441 static void User_create_own_window(IDirectDrawSurfaceImpl* This)
 442 {
 443     USER_PRIV_VAR(priv, This);
 444
 445     if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN)
 446     {
 447         priv->user.window = CreateWindowExA(WS_EX_TOPMOST |
 448                                             WS_EX_LAYERED |
 449                                             WS_EX_TRANSPARENT,
 450                                             "WINE_DDRAW", "DirectDraw",
 451                                             WS_POPUP,
 452                                             0, 0,
 453                                             This->surface_desc.dwWidth,
 454                                             This->surface_desc.dwHeight,
 455                                             GetDesktopWindow(),
 456                                             0, 0, This);
 457         This->more.lpDDRAWReserved = (LPVOID)priv->user.window;
 458         SetWindowPos(priv->user.window, HWND_TOP, 0, 0, 0, 0,
 459                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|
 460                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE|SWP_SHOWWINDOW);
 461         UpdateWindow(priv->user.window);
 462     }
 463 }
 464
 465 static void User_destroy_own_window(IDirectDrawSurfaceImpl* This)
 466 {
 467     USER_PRIV_VAR(priv, This);
 468
 469     if (priv->user.window)
 470     {
 471         SetWindowPos(priv->user.window, 0, 0, 0, 0, 0,
 472                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|SWP_NOZORDER|
 473                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE|SWP_HIDEWINDOW);
 474         This->more.lpDDRAWReserved = NULL;
 475         DestroyWindow(priv->user.window);
 476         priv->user.window = 0;
 477     }
 478 }
 479 #endif
 480
 481 #ifndef SYNC_UPDATE
 482 static DWORD CALLBACK User_update_thread(LPVOID arg)
 483 {
 484     IDirectDrawSurfaceImpl *This = (IDirectDrawSurfaceImpl *)arg;
 485     USER_PRIV_VAR(priv, This);
 486     volatile DWORD *pActive = (volatile DWORD *)&priv->user.update_event;
 487     HANDLE event = *pActive;
 488
 489 #ifdef OWN_WINDOW
 490     User_create_own_window(This);
 491 #endif
 492
 493     /* the point of this is that many games lock the primary surface
 494      * multiple times per frame; this thread will then simply copy as
 495      * often as it can without keeping the main thread waiting for
 496      * each unlock, thus keeping the frame rate high */
 497     do {
 498 #ifdef OWN_WINDOW
 499         DWORD ret = MsgWaitForMultipleObjects(1, &event, FALSE, INFINITE, QS_ALLINPUT);
 500         MSG msg;
 501
 502         while (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE))
 503         {
 504             switch (msg.message) {
 505             case WM_PAINT:
 506                 DispatchMessageA(&msg);
 507                 break;
 508             default:
 509                 /* since we risk getting keyboard messages posted to us,
 510                  * repost posted messages to cooperative window */
 511                 PostMessageA(This->ddraw_owner->window, msg.message, msg.wParam, msg.lParam);
 512             }
 513         }
 514 #else
 515         DWORD ret = WaitForSingleObject(event, INFINITE);
 516 #endif
 517         if (ret == WAIT_OBJECT_0)
 518         {
 519             if (*pActive) {
 520                 priv->user.in_refresh = TRUE;
 521                 User_copy_to_screen(This, NULL);
 522                 EnterCriticalSection(&priv->user.crit);
 523                 priv->user.in_refresh = FALSE;
 524                 if (priv->user.wait_count)
 525                     SetEvent(priv->user.refresh_event);
 526                 LeaveCriticalSection(&priv->user.crit);
 527             } else
 528                 break;
 529         }
 530         else if (ret != WAIT_OBJECT_0+1) break;
 531     } while (TRUE);
 532
 533     SetEvent(priv->user.refresh_event);
 534 #ifdef OWN_WINDOW
 535     User_destroy_own_window(This);
 536 #endif
 537
 538     return 0;
 539 }
 540 #endif
 541
 542 static void User_copy_to_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc)
 543 {
 544     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 545     {
 546         POINT offset;
 547         HWND hDisplayWnd;
 548         HDC hDisplayDC;
 549         HDC hSurfaceDC;
 550         RECT drawrect;
 551
 552         if (FAILED(This->get_dc(This, &hSurfaceDC)))
 553             return;
 554
 555         hDisplayWnd = get_display_window(This, &offset);
 556         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 557 #if 0
 558         /* FIXME: this doesn't work... if users really want to run
 559          * X in 8bpp, then we need to call directly into display.drv
 560          * (or Wine's equivalent), and force a private colormap
 561          * without default entries. */
 562         if (This->palette) {
 563             SelectPalette(hDisplayDC, This->palette->hpal, FALSE);
 564             RealizePalette(hDisplayDC); /* sends messages => deadlocks */
 565         }
 566 #endif
 567         drawrect.left   = 0;
 568         drawrect.right  = This->surface_desc.dwWidth;
 569         drawrect.top    = 0;
 570         drawrect.bottom = This->surface_desc.dwHeight;
 571
 572         if (This->clipper) {
 573             RECT xrc;
 574             HWND hwnd = This->clipper->hWnd;
 575             if (hwnd && GetClientRect(hwnd,&xrc)) {
 576                 OffsetRect(&xrc,offset.x,offset.y);
 577                 IntersectRect(&drawrect,&drawrect,&xrc);
 578             }
 579         }
 580         if (rc)
 581             IntersectRect(&drawrect,&drawrect,rc);
 582         else {
 583             /* Only use this if the caller did not pass a rectangle, since
 584              * due to double locking this could be the wrong one ... */
 585             if (This->lastlockrect.left != This->lastlockrect.right)
 586                 IntersectRect(&drawrect,&drawrect,&This->lastlockrect);
 587         }
 588         BitBlt(hDisplayDC,
 589                 drawrect.left-offset.x, drawrect.top-offset.y,
 590                 drawrect.right-drawrect.left, drawrect.bottom-drawrect.top,
 591                 hSurfaceDC,
 592                 drawrect.left, drawrect.top,
 593                 SRCCOPY
 594         );
 595         ReleaseDC(hDisplayWnd, hDisplayDC);
 596     }
 597 }
 598
 599 #if 0
 600 static void User_copy_from_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc)
 601 {
 602     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 603     {
 604         POINT offset;
 605         HWND hDisplayWnd = get_display_window(This, &offset);
 606         HDC hDisplayDC = GetDC(hDisplayWnd);
 607         RECT drawrect;
 608
 609         drawrect.left   = 0;
 610         drawrect.right  = This->surface_desc.dwWidth;
 611         drawrect.top    = 0;
 612         drawrect.bottom = This->surface_desc.dwHeight;
 613         if (rc)
 614             IntersectRect(&drawrect,&drawrect,rc);
 615
 616         BitBlt(This->hDC,
 617             drawrect.left, drawrect.top,
 618             drawrect.right-drawrect.left, drawrect.bottom-drawrect.top,
 619             hDisplayDC,
 620             drawrect.left+offset.x, drawrect.top+offset.y,
 621             SRCCOPY
 622         );
 623         ReleaseDC(hDisplayWnd, hDisplayDC);
 624     }
 625 }
 626 #endif
 627
 628 static ICOM_VTABLE(IDirectDrawSurface7) User_IDirectDrawSurface7_VTable =
 629 {
 630     Main_DirectDrawSurface_QueryInterface,
 631     Main_DirectDrawSurface_AddRef,
 632     Main_DirectDrawSurface_Release,
 633     Main_DirectDrawSurface_AddAttachedSurface,
 634     Main_DirectDrawSurface_AddOverlayDirtyRect,
 635     DIB_DirectDrawSurface_Blt,
 636     Main_DirectDrawSurface_BltBatch,
 637     DIB_DirectDrawSurface_BltFast,
 638     Main_DirectDrawSurface_DeleteAttachedSurface,
 639     Main_DirectDrawSurface_EnumAttachedSurfaces,
 640     Main_DirectDrawSurface_EnumOverlayZOrders,
 641     Main_DirectDrawSurface_Flip,
 642     Main_DirectDrawSurface_GetAttachedSurface,
 643     Main_DirectDrawSurface_GetBltStatus,
 644     Main_DirectDrawSurface_GetCaps,
 645     Main_DirectDrawSurface_GetClipper,
 646     Main_DirectDrawSurface_GetColorKey,
 647     Main_DirectDrawSurface_GetDC,
 648     Main_DirectDrawSurface_GetFlipStatus,
 649     Main_DirectDrawSurface_GetOverlayPosition,
 650     Main_DirectDrawSurface_GetPalette,
 651     Main_DirectDrawSurface_GetPixelFormat,
 652     Main_DirectDrawSurface_GetSurfaceDesc,
 653     Main_DirectDrawSurface_Initialize,
 654     Main_DirectDrawSurface_IsLost,
 655     Main_DirectDrawSurface_Lock,
 656     Main_DirectDrawSurface_ReleaseDC,
 657     DIB_DirectDrawSurface_Restore,
 658     Main_DirectDrawSurface_SetClipper,
 659     Main_DirectDrawSurface_SetColorKey,
 660     Main_DirectDrawSurface_SetOverlayPosition,
 661     Main_DirectDrawSurface_SetPalette,
 662     Main_DirectDrawSurface_Unlock,
 663     Main_DirectDrawSurface_UpdateOverlay,
 664     Main_DirectDrawSurface_UpdateOverlayDisplay,
 665     Main_DirectDrawSurface_UpdateOverlayZOrder,
 666     Main_DirectDrawSurface_GetDDInterface,
 667     Main_DirectDrawSurface_PageLock,
 668     Main_DirectDrawSurface_PageUnlock,
 669     DIB_DirectDrawSurface_SetSurfaceDesc,
 670     Main_DirectDrawSurface_SetPrivateData,
 671     Main_DirectDrawSurface_GetPrivateData,
 672     Main_DirectDrawSurface_FreePrivateData,
 673     Main_DirectDrawSurface_GetUniquenessValue,
 674     Main_DirectDrawSurface_ChangeUniquenessValue,
 675     Main_DirectDrawSurface_SetPriority,
 676     Main_DirectDrawSurface_GetPriority,
 677     Main_DirectDrawSurface_SetLOD,
 678     Main_DirectDrawSurface_GetLOD
 679 };