dlls/gdi32/driver.c

   1 /*
   2  * Graphics driver management functions
   3  *
   4  * Copyright 1994 Bob Amstadt
   5  * Copyright 1996, 2001 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdio.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winreg.h"
  31
  32 #include "gdi_private.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  37
  38 struct graphics_driver
  39 {
  40     struct graphics_driver *next;
  41     struct graphics_driver *prev;
  42     HMODULE                 module;  /* module handle */
  43     unsigned int            count;   /* reference count */
  44     DC_FUNCTIONS            funcs;
  45 };
  46
  47 static struct graphics_driver *first_driver;
  48 static struct graphics_driver *display_driver;
  49
  50 static CRITICAL_SECTION driver_section;
  51 static CRITICAL_SECTION_DEBUG critsect_debug =
  52 {
  53     0, 0, &driver_section,
  54     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  55       0, 0, { (DWORD_PTR)(__FILE__ ": driver_section") }
  56 };
  57 static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  58
  59 /**********************************************************************
  60  *           create_driver
  61  *
  62  * Allocate and fill the driver structure for a given module.
  63  */
  64 static struct graphics_driver *create_driver( HMODULE module )
  65 {
  66     struct graphics_driver *driver;
  67
  68     if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
  69     driver->next   = NULL;
  70     driver->prev   = NULL;
  71     driver->module = module;
  72     driver->count  = 1;
  73
  74     /* fill the function table */
  75     if (module)
  76     {
  77 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  78         GET_FUNC(AbortDoc);
  79         GET_FUNC(AbortPath);
  80         GET_FUNC(AlphaBlend);
  81         GET_FUNC(AngleArc);
  82         GET_FUNC(Arc);
  83         GET_FUNC(ArcTo);
  84         GET_FUNC(BeginPath);
  85         GET_FUNC(BitBlt);
  86         GET_FUNC(ChoosePixelFormat);
  87         GET_FUNC(Chord);
  88         GET_FUNC(CloseFigure);
  89         GET_FUNC(CreateBitmap);
  90         GET_FUNC(CreateDC);
  91         GET_FUNC(CreateDIBSection);
  92         GET_FUNC(DeleteBitmap);
  93         GET_FUNC(DeleteDC);
  94         GET_FUNC(DescribePixelFormat);
  95         GET_FUNC(DeviceCapabilities);
  96         GET_FUNC(Ellipse);
  97         GET_FUNC(EndDoc);
  98         GET_FUNC(EndPage);
  99         GET_FUNC(EndPath);
 100         GET_FUNC(EnumDeviceFonts);
 101         GET_FUNC(ExcludeClipRect);
 102         GET_FUNC(ExtDeviceMode);
 103         GET_FUNC(ExtEscape);
 104         GET_FUNC(ExtFloodFill);
 105         GET_FUNC(ExtSelectClipRgn);
 106         GET_FUNC(ExtTextOut);
 107         GET_FUNC(FillPath);
 108         GET_FUNC(FillRgn);
 109         GET_FUNC(FlattenPath);
 110         GET_FUNC(FrameRgn);
 111         GET_FUNC(GdiComment);
 112         GET_FUNC(GetBitmapBits);
 113         GET_FUNC(GetCharWidth);
 114         GET_FUNC(GetDCOrgEx);
 115         GET_FUNC(GetDIBColorTable);
 116         GET_FUNC(GetDIBits);
 117         GET_FUNC(GetDeviceCaps);
 118         GET_FUNC(GetDeviceGammaRamp);
 119         GET_FUNC(GetICMProfile);
 120         GET_FUNC(GetNearestColor);
 121         GET_FUNC(GetPixel);
 122         GET_FUNC(GetPixelFormat);
 123         GET_FUNC(GetSystemPaletteEntries);
 124         GET_FUNC(GetTextExtentExPoint);
 125         GET_FUNC(GetTextMetrics);
 126         GET_FUNC(IntersectClipRect);
 127         GET_FUNC(InvertRgn);
 128         GET_FUNC(LineTo);
 129         GET_FUNC(MoveTo);
 130         GET_FUNC(ModifyWorldTransform);
 131         GET_FUNC(OffsetClipRgn);
 132         GET_FUNC(OffsetViewportOrg);
 133         GET_FUNC(OffsetWindowOrg);
 134         GET_FUNC(PaintRgn);
 135         GET_FUNC(PatBlt);
 136         GET_FUNC(Pie);
 137         GET_FUNC(PolyBezier);
 138         GET_FUNC(PolyBezierTo);
 139         GET_FUNC(PolyDraw);
 140         GET_FUNC(PolyPolygon);
 141         GET_FUNC(PolyPolyline);
 142         GET_FUNC(Polygon);
 143         GET_FUNC(Polyline);
 144         GET_FUNC(PolylineTo);
 145         GET_FUNC(RealizeDefaultPalette);
 146         GET_FUNC(RealizePalette);
 147         GET_FUNC(Rectangle);
 148         GET_FUNC(ResetDC);
 149         GET_FUNC(RestoreDC);
 150         GET_FUNC(RoundRect);
 151         GET_FUNC(SaveDC);
 152         GET_FUNC(ScaleViewportExt);
 153         GET_FUNC(ScaleWindowExt);
 154         GET_FUNC(SelectBitmap);
 155         GET_FUNC(SelectBrush);
 156         GET_FUNC(SelectClipPath);
 157         GET_FUNC(SelectFont);
 158         GET_FUNC(SelectPalette);
 159         GET_FUNC(SelectPen);
 160         GET_FUNC(SetArcDirection);
 161         GET_FUNC(SetBitmapBits);
 162         GET_FUNC(SetBkColor);
 163         GET_FUNC(SetBkMode);
 164         GET_FUNC(SetDCBrushColor);
 165         GET_FUNC(SetDCOrg);
 166         GET_FUNC(SetDCPenColor);
 167         GET_FUNC(SetDIBColorTable);
 168         GET_FUNC(SetDIBits);
 169         GET_FUNC(SetDIBitsToDevice);
 170         GET_FUNC(SetDeviceClipping);
 171         GET_FUNC(SetDeviceGammaRamp);
 172         GET_FUNC(SetMapMode);
 173         GET_FUNC(SetMapperFlags);
 174         GET_FUNC(SetPixel);
 175         GET_FUNC(SetPixelFormat);
 176         GET_FUNC(SetPolyFillMode);
 177         GET_FUNC(SetROP2);
 178         GET_FUNC(SetRelAbs);
 179         GET_FUNC(SetStretchBltMode);
 180         GET_FUNC(SetTextAlign);
 181         GET_FUNC(SetTextCharacterExtra);
 182         GET_FUNC(SetTextColor);
 183         GET_FUNC(SetTextJustification);
 184         GET_FUNC(SetViewportExt);
 185         GET_FUNC(SetViewportOrg);
 186         GET_FUNC(SetWindowExt);
 187         GET_FUNC(SetWindowOrg);
 188         GET_FUNC(SetWorldTransform);
 189         GET_FUNC(StartDoc);
 190         GET_FUNC(StartPage);
 191         GET_FUNC(StretchBlt);
 192         GET_FUNC(StretchDIBits);
 193         GET_FUNC(StrokeAndFillPath);
 194         GET_FUNC(StrokePath);
 195         GET_FUNC(SwapBuffers);
 196         GET_FUNC(UnrealizePalette);
 197         GET_FUNC(WidenPath);
 198
 199         /* OpenGL32 */
 200         GET_FUNC(wglCreateContext);
 201         GET_FUNC(wglDeleteContext);
 202         GET_FUNC(wglGetProcAddress);
 203         GET_FUNC(wglGetPbufferDCARB);
 204         GET_FUNC(wglMakeContextCurrentARB);
 205         GET_FUNC(wglMakeCurrent);
 206         GET_FUNC(wglSetPixelFormatWINE);
 207         GET_FUNC(wglShareLists);
 208         GET_FUNC(wglUseFontBitmapsA);
 209         GET_FUNC(wglUseFontBitmapsW);
 210 #undef GET_FUNC
 211     }
 212     else memset( &driver->funcs, 0, sizeof(driver->funcs) );
 213
 214     /* add it to the list */
 215     driver->prev = NULL;
 216     if ((driver->next = first_driver)) driver->next->prev = driver;
 217     first_driver = driver;
 218     return driver;
 219 }
 220
 221
 222 /**********************************************************************
 223  *           load_display_driver
 224  *
 225  * Special case for loading the display driver: get the name from the config file
 226  */
 227 static struct graphics_driver *load_display_driver(void)
 228 {
 229     char buffer[MAX_PATH], libname[32], *name, *next;
 230     HMODULE module = 0;
 231     HKEY hkey;
 232
 233     if (display_driver)  /* already loaded */
 234     {
 235         display_driver->count++;
 236         return display_driver;
 237     }
 238
 239     strcpy( buffer, "x11" );  /* default value */
 240     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 241     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 242     {
 243         DWORD type, count = sizeof(buffer);
 244         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 245         RegCloseKey( hkey );
 246     }
 247
 248     name = buffer;
 249     while (name)
 250     {
 251         next = strchr( name, ',' );
 252         if (next) *next++ = 0;
 253
 254         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 255         if ((module = LoadLibraryA( libname )) != 0) break;
 256         name = next;
 257     }
 258
 259     if (!(display_driver = create_driver( module )))
 260     {
 261         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 262         FreeLibrary( module );
 263         ExitProcess(1);
 264     }
 265
 266     display_driver->count++;  /* we don't want to free it */
 267     return display_driver;
 268 }
 269
 270
 271 /**********************************************************************
 272  *           DRIVER_load_driver
 273  */
 274 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 275 {
 276     HMODULE module;
 277     struct graphics_driver *driver;
 278     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 279     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 280
 281     EnterCriticalSection( &driver_section );
 282
 283     /* display driver is a special case */
 284     if (!strcmpiW( name, displayW ) ||
 285         !strcmpiW( name, display1W ))
 286     {
 287         driver = load_display_driver();
 288         LeaveCriticalSection( &driver_section );
 289         return &driver->funcs;
 290     }
 291
 292     if ((module = GetModuleHandleW( name )))
 293     {
 294         for (driver = first_driver; driver; driver = driver->next)
 295         {
 296             if (driver->module == module)
 297             {
 298                 driver->count++;
 299                 LeaveCriticalSection( &driver_section );
 300                 return &driver->funcs;
 301             }
 302         }
 303     }
 304
 305     if (!(module = LoadLibraryW( name )))
 306     {
 307         LeaveCriticalSection( &driver_section );
 308         return NULL;
 309     }
 310
 311     if (!(driver = create_driver( module )))
 312     {
 313         FreeLibrary( module );
 314         LeaveCriticalSection( &driver_section );
 315         return NULL;
 316     }
 317
 318     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 319     LeaveCriticalSection( &driver_section );
 320     return &driver->funcs;
 321 }
 322
 323
 324 /**********************************************************************
 325  *           DRIVER_get_driver
 326  *
 327  * Get a new copy of an existing driver.
 328  */
 329 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 330 {
 331     struct graphics_driver *driver;
 332
 333     EnterCriticalSection( &driver_section );
 334     for (driver = first_driver; driver; driver = driver->next)
 335         if (&driver->funcs == funcs) break;
 336     if (!driver) ERR( "driver not found, trouble ahead\n" );
 337     driver->count++;
 338     LeaveCriticalSection( &driver_section );
 339     return funcs;
 340 }
 341
 342
 343 /**********************************************************************
 344  *           DRIVER_release_driver
 345  *
 346  * Release a driver by decrementing ref count and freeing it if needed.
 347  */
 348 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 349 {
 350     struct graphics_driver *driver;
 351
 352     EnterCriticalSection( &driver_section );
 353
 354     for (driver = first_driver; driver; driver = driver->next)
 355         if (&driver->funcs == funcs) break;
 356
 357     if (!driver) goto done;
 358     if (--driver->count) goto done;
 359
 360     /* removed last reference, free it */
 361     if (driver->next) driver->next->prev = driver->prev;
 362     if (driver->prev) driver->prev->next = driver->next;
 363     else first_driver = driver->next;
 364     if (driver == display_driver) display_driver = NULL;
 365
 366     FreeLibrary( driver->module );
 367     HeapFree( GetProcessHeap(), 0, driver );
 368  done:
 369     LeaveCriticalSection( &driver_section );
 370 }
 371
 372
 373 /*****************************************************************************
 374  *      DRIVER_GetDriverName
 375  *
 376  */
 377 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 378 {
 379     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 380     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 381     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 382     static const WCHAR empty_strW[] = { 0 };
 383     WCHAR *p;
 384
 385     /* display is a special case */
 386     if (!strcmpiW( device, displayW ) ||
 387         !strcmpiW( device, display1W ))
 388     {
 389         lstrcpynW( driver, displayW, size );
 390         return TRUE;
 391     }
 392
 393     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 394     if(!size) {
 395         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 396         return FALSE;
 397     }
 398     p = strchrW(driver, ',');
 399     if(!p)
 400     {
 401         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 402         return FALSE;
 403     }
 404     *p = 0;
 405     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 406     return TRUE;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           GdiConvertToDevmodeW    (GDI32.@)
 412  */
 413 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 414 {
 415     DEVMODEW *dmW;
 416     WORD dmW_size, dmA_size;
 417
 418     dmA_size = dmA->dmSize;
 419
 420     /* this is the minimal dmSize that XP accepts */
 421     if (dmA_size < FIELD_OFFSET(DEVMODEA, dmFields))
 422         return NULL;
 423
 424     if (dmA_size > sizeof(DEVMODEA))
 425         dmA_size = sizeof(DEVMODEA);
 426
 427     dmW_size = dmA_size + CCHDEVICENAME;
 428     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 429         dmW_size += CCHFORMNAME;
 430
 431     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 432     if (!dmW) return NULL;
 433
 434     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, -1,
 435                                    dmW->dmDeviceName, CCHDEVICENAME);
 436     /* copy slightly more, to avoid long computations */
 437     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA_size - CCHDEVICENAME);
 438
 439     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 440     {
 441         if (dmA->dmFields & DM_FORMNAME)
 442             MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, -1,
 443                                        dmW->dmFormName, CCHFORMNAME);
 444         else
 445             dmW->dmFormName[0] = 0;
 446
 447         if (dmA_size > FIELD_OFFSET(DEVMODEA, dmLogPixels))
 448             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA_size - FIELD_OFFSET(DEVMODEA, dmLogPixels));
 449     }
 450
 451     if (dmA->dmDriverExtra)
 452         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA_size, dmA->dmDriverExtra);
 453
 454     dmW->dmSize = dmW_size;
 455
 456     return dmW;
 457 }
 458
 459
 460 /*****************************************************************************
 461  *      @ [GDI32.100]
 462  *
 463  * This should thunk to 16-bit and simply call the proc with the given args.
 464  */
 465 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 466                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 467 {
 468     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 469     return -1;
 470 }
 471
 472 /*****************************************************************************
 473  *      @ [GDI32.101]
 474  *
 475  * This should load the correct driver for lpszDevice and calls this driver's
 476  * ExtDeviceModePropSheet proc.
 477  *
 478  * Note: The driver calls a callback routine for each property sheet page; these
 479  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 480  * The layout of this structure is:
 481  *
 482  * struct
 483  * {
 484  *   DWORD  nPages;
 485  *   DWORD  unknown;
 486  *   HPROPSHEETPAGE  pages[10];
 487  * };
 488  */
 489 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 490                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 491 {
 492     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 493     return -1;
 494 }
 495
 496 /*****************************************************************************
 497  *      @ [GDI32.102]
 498  *
 499  * This should load the correct driver for lpszDevice and calls this driver's
 500  * ExtDeviceMode proc.
 501  *
 502  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 503  */
 504 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 505                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 506                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 507                                     LPSTR lpszProfile, DWORD fwMode )
 508 {
 509     WCHAR deviceW[300];
 510     WCHAR bufW[300];
 511     char buf[300];
 512     HDC hdc;
 513     DC *dc;
 514     INT ret = -1;
 515
 516     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 517           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 518
 519     if (!lpszDevice) return -1;
 520     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 521
 522     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 523
 524     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 525
 526     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 527
 528     if ((dc = get_dc_ptr( hdc )))
 529     {
 530         if (dc->funcs->pExtDeviceMode)
 531             ret = dc->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 532                                              lpdmInput, lpszProfile, fwMode );
 533         release_dc_ptr( dc );
 534     }
 535     DeleteDC( hdc );
 536     return ret;
 537 }
 538
 539 /****************************************************************************
 540  *      @ [GDI32.103]
 541  *
 542  * This should load the correct driver for lpszDevice and calls this driver's
 543  * AdvancedSetupDialog proc.
 544  */
 545 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 546                                           LPDEVMODEA devin, LPDEVMODEA devout )
 547 {
 548     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 549     return -1;
 550 }
 551
 552 /*****************************************************************************
 553  *      @ [GDI32.104]
 554  *
 555  * This should load the correct driver for lpszDevice and calls this driver's
 556  * DeviceCapabilities proc.
 557  *
 558  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 559  */
 560 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 561                                            WORD fwCapability, LPSTR lpszOutput,
 562                                            LPDEVMODEA lpdm )
 563 {
 564     WCHAR deviceW[300];
 565     WCHAR bufW[300];
 566     char buf[300];
 567     HDC hdc;
 568     DC *dc;
 569     INT ret = -1;
 570
 571     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 572
 573     if (!lpszDevice) return -1;
 574     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 575
 576     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 577
 578     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 579
 580     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 581
 582     if ((dc = get_dc_ptr( hdc )))
 583     {
 584         if (dc->funcs->pDeviceCapabilities)
 585             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 586                                                   fwCapability, lpszOutput, lpdm );
 587         release_dc_ptr( dc );
 588     }
 589     DeleteDC( hdc );
 590     return ret;
 591 }
 592
 593
 594 /************************************************************************
 595  *             Escape  [GDI32.@]
 596  */
 597 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 598 {
 599     INT ret;
 600     POINT *pt;
 601
 602     switch (escape)
 603     {
 604     case ABORTDOC:
 605         return AbortDoc( hdc );
 606
 607     case ENDDOC:
 608         return EndDoc( hdc );
 609
 610     case GETPHYSPAGESIZE:
 611         pt = out_data;
 612         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 613         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 614         return 1;
 615
 616     case GETPRINTINGOFFSET:
 617         pt = out_data;
 618         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 619         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 620         return 1;
 621
 622     case GETSCALINGFACTOR:
 623         pt = out_data;
 624         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 625         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 626         return 1;
 627
 628     case NEWFRAME:
 629         return EndPage( hdc );
 630
 631     case SETABORTPROC:
 632         return SetAbortProc( hdc, (ABORTPROC)in_data );
 633
 634     case STARTDOC:
 635         {
 636             DOCINFOA doc;
 637             char *name = NULL;
 638
 639             /* in_data may not be 0 terminated so we must copy it */
 640             if (in_data)
 641             {
 642                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 643                 memcpy( name, in_data, in_count );
 644                 name[in_count] = 0;
 645             }
 646             /* out_data is actually a pointer to the DocInfo structure and used as
 647              * a second input parameter */
 648             if (out_data) doc = *(DOCINFOA *)out_data;
 649             else
 650             {
 651                 doc.cbSize = sizeof(doc);
 652                 doc.lpszOutput = NULL;
 653                 doc.lpszDatatype = NULL;
 654                 doc.fwType = 0;
 655             }
 656             doc.lpszDocName = name;
 657             ret = StartDocA( hdc, &doc );
 658             HeapFree( GetProcessHeap(), 0, name );
 659             if (ret > 0) ret = StartPage( hdc );
 660             return ret;
 661         }
 662
 663     case QUERYESCSUPPORT:
 664         {
 665             const INT *ptr = (const INT *)in_data;
 666             if (in_count < sizeof(INT)) return 0;
 667             switch(*ptr)
 668             {
 669             case ABORTDOC:
 670             case ENDDOC:
 671             case GETPHYSPAGESIZE:
 672             case GETPRINTINGOFFSET:
 673             case GETSCALINGFACTOR:
 674             case NEWFRAME:
 675             case QUERYESCSUPPORT:
 676             case SETABORTPROC:
 677             case STARTDOC:
 678                 return TRUE;
 679             }
 680             break;
 681         }
 682     }
 683
 684     /* if not handled internally, pass it to the driver */
 685     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 686 }
 687
 688
 689 /******************************************************************************
 690  *              ExtEscape       [GDI32.@]
 691  *
 692  * Access capabilities of a particular device that are not available through GDI.
 693  *
 694  * PARAMS
 695  *    hdc         [I] Handle to device context
 696  *    nEscape     [I] Escape function
 697  *    cbInput     [I] Number of bytes in input structure
 698  *    lpszInData  [I] Pointer to input structure
 699  *    cbOutput    [I] Number of bytes in output structure
 700  *    lpszOutData [O] Pointer to output structure
 701  *
 702  * RETURNS
 703  *    Success: >0
 704  *    Not implemented: 0
 705  *    Failure: <0
 706  */
 707 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 708                       INT cbOutput, LPSTR lpszOutData )
 709 {
 710     INT ret = 0;
 711     DC * dc = get_dc_ptr( hdc );
 712     if (dc)
 713     {
 714         if (dc->funcs->pExtEscape)
 715             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 716         release_dc_ptr( dc );
 717     }
 718     return ret;
 719 }
 720
 721
 722 /*******************************************************************
 723  *      DrawEscape [GDI32.@]
 724  *
 725  *
 726  */
 727 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 728 {
 729     FIXME("DrawEscape, stub\n");
 730     return 0;
 731 }