dlls/gdi/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.h"
  33 #include "gdi_private.h"
  34 #include "wine/unicode.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  38
  39 struct graphics_driver
  40 {
  41     struct graphics_driver *next;
  42     struct graphics_driver *prev;
  43     HMODULE                 module;  /* module handle */
  44     unsigned int            count;   /* reference count */
  45     DC_FUNCTIONS            funcs;
  46 };
  47
  48 static struct graphics_driver *first_driver;
  49 static struct graphics_driver *display_driver;
  50
  51 static CRITICAL_SECTION driver_section;
  52 static CRITICAL_SECTION_DEBUG critsect_debug =
  53 {
  54     0, 0, &driver_section,
  55     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  56       0, 0, { (DWORD_PTR)(__FILE__ ": driver_section") }
  57 };
  58 static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  59
  60 /**********************************************************************
  61  *           create_driver
  62  *
  63  * Allocate and fill the driver structure for a given module.
  64  */
  65 static struct graphics_driver *create_driver( HMODULE module )
  66 {
  67     struct graphics_driver *driver;
  68
  69     if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
  70     driver->next   = NULL;
  71     driver->prev   = NULL;
  72     driver->module = module;
  73     driver->count  = 1;
  74
  75     /* fill the function table */
  76     if (module)
  77     {
  78 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  79         GET_FUNC(AbortDoc);
  80         GET_FUNC(AbortPath);
  81         GET_FUNC(AlphaBlend);
  82         GET_FUNC(AngleArc);
  83         GET_FUNC(Arc);
  84         GET_FUNC(ArcTo);
  85         GET_FUNC(BeginPath);
  86         GET_FUNC(BitBlt);
  87         GET_FUNC(ChoosePixelFormat);
  88         GET_FUNC(Chord);
  89         GET_FUNC(CloseFigure);
  90         GET_FUNC(CreateBitmap);
  91         GET_FUNC(CreateDC);
  92         GET_FUNC(CreateDIBSection);
  93         GET_FUNC(DeleteBitmap);
  94         GET_FUNC(DeleteDC);
  95         GET_FUNC(DescribePixelFormat);
  96         GET_FUNC(DeviceCapabilities);
  97         GET_FUNC(Ellipse);
  98         GET_FUNC(EndDoc);
  99         GET_FUNC(EndPage);
 100         GET_FUNC(EndPath);
 101         GET_FUNC(EnumDeviceFonts);
 102         GET_FUNC(ExcludeClipRect);
 103         GET_FUNC(ExtDeviceMode);
 104         GET_FUNC(ExtEscape);
 105         GET_FUNC(ExtFloodFill);
 106         GET_FUNC(ExtSelectClipRgn);
 107         GET_FUNC(ExtTextOut);
 108         GET_FUNC(FillPath);
 109         GET_FUNC(FillRgn);
 110         GET_FUNC(FlattenPath);
 111         GET_FUNC(FrameRgn);
 112         GET_FUNC(GdiComment);
 113         GET_FUNC(GetBitmapBits);
 114         GET_FUNC(GetCharWidth);
 115         GET_FUNC(GetDCOrgEx);
 116         GET_FUNC(GetDIBColorTable);
 117         GET_FUNC(GetDIBits);
 118         GET_FUNC(GetDeviceCaps);
 119         GET_FUNC(GetDeviceGammaRamp);
 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(WidenPath);
 197
 198         /* OpenGL32 */
 199         GET_FUNC(wglCreateContext);
 200         GET_FUNC(wglMakeCurrent);
 201         GET_FUNC(wglUseFontBitmapsA);
 202         GET_FUNC(wglUseFontBitmapsW);
 203 #undef GET_FUNC
 204     }
 205     else memset( &driver->funcs, 0, sizeof(driver->funcs) );
 206
 207     /* add it to the list */
 208     driver->prev = NULL;
 209     if ((driver->next = first_driver)) driver->next->prev = driver;
 210     first_driver = driver;
 211     return driver;
 212 }
 213
 214
 215 /**********************************************************************
 216  *           load_display_driver
 217  *
 218  * Special case for loading the display driver: get the name from the config file
 219  */
 220 static struct graphics_driver *load_display_driver(void)
 221 {
 222     char buffer[MAX_PATH], libname[32], *name, *next;
 223     HMODULE module = 0;
 224     HKEY hkey;
 225
 226     if (display_driver)  /* already loaded */
 227     {
 228         display_driver->count++;
 229         return display_driver;
 230     }
 231
 232     strcpy( buffer, "x11" );  /* default value */
 233     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 234     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 235     {
 236         DWORD type, count = sizeof(buffer);
 237         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 238         RegCloseKey( hkey );
 239     }
 240
 241     name = buffer;
 242     while (name)
 243     {
 244         next = strchr( name, ',' );
 245         if (next) *next++ = 0;
 246
 247         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 248         if ((module = LoadLibraryA( libname )) != 0) break;
 249         name = next;
 250     }
 251
 252     if (!(display_driver = create_driver( module )))
 253     {
 254         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 255         FreeLibrary( module );
 256         ExitProcess(1);
 257     }
 258
 259     display_driver->count++;  /* we don't want to free it */
 260     return display_driver;
 261 }
 262
 263
 264 /**********************************************************************
 265  *           DRIVER_load_driver
 266  */
 267 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 268 {
 269     HMODULE module;
 270     struct graphics_driver *driver;
 271     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 272     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 273
 274     EnterCriticalSection( &driver_section );
 275
 276     /* display driver is a special case */
 277     if (!strcmpiW( name, displayW ) ||
 278         !strcmpiW( name, display1W ))
 279     {
 280         driver = load_display_driver();
 281         LeaveCriticalSection( &driver_section );
 282         return &driver->funcs;
 283     }
 284
 285     if ((module = GetModuleHandleW( name )))
 286     {
 287         for (driver = first_driver; driver; driver = driver->next)
 288         {
 289             if (driver->module == module)
 290             {
 291                 driver->count++;
 292                 LeaveCriticalSection( &driver_section );
 293                 return &driver->funcs;
 294             }
 295         }
 296     }
 297
 298     if (!(module = LoadLibraryW( name )))
 299     {
 300         LeaveCriticalSection( &driver_section );
 301         return NULL;
 302     }
 303
 304     if (!(driver = create_driver( module )))
 305     {
 306         FreeLibrary( module );
 307         LeaveCriticalSection( &driver_section );
 308         return NULL;
 309     }
 310
 311     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 312     LeaveCriticalSection( &driver_section );
 313     return &driver->funcs;
 314 }
 315
 316
 317 /**********************************************************************
 318  *           DRIVER_get_driver
 319  *
 320  * Get a new copy of an existing driver.
 321  */
 322 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 323 {
 324     struct graphics_driver *driver;
 325
 326     EnterCriticalSection( &driver_section );
 327     for (driver = first_driver; driver; driver = driver->next)
 328         if (&driver->funcs == funcs) break;
 329     if (!driver) ERR( "driver not found, trouble ahead\n" );
 330     driver->count++;
 331     LeaveCriticalSection( &driver_section );
 332     return funcs;
 333 }
 334
 335
 336 /**********************************************************************
 337  *           DRIVER_release_driver
 338  *
 339  * Release a driver by decrementing ref count and freeing it if needed.
 340  */
 341 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 342 {
 343     struct graphics_driver *driver;
 344
 345     EnterCriticalSection( &driver_section );
 346
 347     for (driver = first_driver; driver; driver = driver->next)
 348         if (&driver->funcs == funcs) break;
 349
 350     if (!driver) goto done;
 351     if (--driver->count) goto done;
 352
 353     /* removed last reference, free it */
 354     if (driver->next) driver->next->prev = driver->prev;
 355     if (driver->prev) driver->prev->next = driver->next;
 356     else first_driver = driver->next;
 357     if (driver == display_driver) display_driver = NULL;
 358
 359     FreeLibrary( driver->module );
 360     HeapFree( GetProcessHeap(), 0, driver );
 361  done:
 362     LeaveCriticalSection( &driver_section );
 363 }
 364
 365
 366 /*****************************************************************************
 367  *      DRIVER_GetDriverName
 368  *
 369  */
 370 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 371 {
 372     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 373     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 374     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 375     static const WCHAR empty_strW[] = { 0 };
 376     WCHAR *p;
 377
 378     /* display is a special case */
 379     if (!strcmpiW( device, displayW ) ||
 380         !strcmpiW( device, display1W ))
 381     {
 382         lstrcpynW( driver, displayW, size );
 383         return TRUE;
 384     }
 385
 386     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 387     if(!size) {
 388         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 389         return FALSE;
 390     }
 391     p = strchrW(driver, ',');
 392     if(!p)
 393     {
 394         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 395         return FALSE;
 396     }
 397     *p = 0;
 398     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 399     return TRUE;
 400 }
 401
 402
 403 /***********************************************************************
 404  *           GdiConvertToDevmodeW    (GDI32.@)
 405  */
 406 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 407 {
 408     DEVMODEW *dmW;
 409     WORD dmW_size;
 410
 411     dmW_size = dmA->dmSize + CCHDEVICENAME;
 412     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 413         dmW_size += CCHFORMNAME;
 414
 415     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 416     if (!dmW) return NULL;
 417
 418     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, CCHDEVICENAME,
 419                                    dmW->dmDeviceName, CCHDEVICENAME);
 420     /* copy slightly more, to avoid long computations */
 421     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 422
 423     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 424     {
 425         MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, CCHFORMNAME,
 426                                        dmW->dmFormName, CCHFORMNAME);
 427         if (dmA->dmSize > (const char *)&dmA->dmLogPixels - (const char *)dmA)
 428             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((const char *)&dmA->dmLogPixels - (const char *)dmA));
 429     }
 430
 431     if (dmA->dmDriverExtra)
 432         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 433
 434     dmW->dmSize = dmW_size;
 435
 436     return dmW;
 437 }
 438
 439
 440 /*****************************************************************************
 441  *      @ [GDI32.100]
 442  *
 443  * This should thunk to 16-bit and simply call the proc with the given args.
 444  */
 445 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 446                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 447 {
 448     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 449     return -1;
 450 }
 451
 452 /*****************************************************************************
 453  *      @ [GDI32.101]
 454  *
 455  * This should load the correct driver for lpszDevice and calls this driver's
 456  * ExtDeviceModePropSheet proc.
 457  *
 458  * Note: The driver calls a callback routine for each property sheet page; these
 459  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 460  * The layout of this structure is:
 461  *
 462  * struct
 463  * {
 464  *   DWORD  nPages;
 465  *   DWORD  unknown;
 466  *   HPROPSHEETPAGE  pages[10];
 467  * };
 468  */
 469 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 470                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 471 {
 472     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 473     return -1;
 474 }
 475
 476 /*****************************************************************************
 477  *      @ [GDI32.102]
 478  *
 479  * This should load the correct driver for lpszDevice and calls this driver's
 480  * ExtDeviceMode proc.
 481  *
 482  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 483  */
 484 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 485                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 486                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 487                                     LPSTR lpszProfile, DWORD fwMode )
 488 {
 489     WCHAR deviceW[300];
 490     WCHAR bufW[300];
 491     char buf[300];
 492     HDC hdc;
 493     DC *dc;
 494     INT ret = -1;
 495     INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 496
 497     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 498           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 499
 500     if (!lpszDevice) return -1;
 501     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 502
 503     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 504
 505     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 506
 507     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 508
 509     if ((dc = DC_GetDCPtr( hdc )))
 510     {
 511         pExtDeviceMode = dc->funcs->pExtDeviceMode;
 512         GDI_ReleaseObj( hdc );
 513         if (pExtDeviceMode)
 514             ret = pExtDeviceMode(buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 515                                             lpdmInput, lpszProfile, fwMode);
 516     }
 517     DeleteDC( hdc );
 518     return ret;
 519 }
 520
 521 /****************************************************************************
 522  *      @ [GDI32.103]
 523  *
 524  * This should load the correct driver for lpszDevice and calls this driver's
 525  * AdvancedSetupDialog proc.
 526  */
 527 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 528                                           LPDEVMODEA devin, LPDEVMODEA devout )
 529 {
 530     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 531     return -1;
 532 }
 533
 534 /*****************************************************************************
 535  *      @ [GDI32.104]
 536  *
 537  * This should load the correct driver for lpszDevice and calls this driver's
 538  * DeviceCapabilities proc.
 539  *
 540  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 541  */
 542 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 543                                            WORD fwCapability, LPSTR lpszOutput,
 544                                            LPDEVMODEA lpdm )
 545 {
 546     WCHAR deviceW[300];
 547     WCHAR bufW[300];
 548     char buf[300];
 549     HDC hdc;
 550     DC *dc;
 551     INT ret = -1;
 552
 553     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 554
 555     if (!lpszDevice) return -1;
 556     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 557
 558     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 559
 560     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 561
 562     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 563
 564     if ((dc = DC_GetDCPtr( hdc )))
 565     {
 566         if (dc->funcs->pDeviceCapabilities)
 567             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 568                                                   fwCapability, lpszOutput, lpdm );
 569         GDI_ReleaseObj( hdc );
 570     }
 571     DeleteDC( hdc );
 572     return ret;
 573 }
 574
 575
 576 /************************************************************************
 577  *             Escape  [GDI32.@]
 578  */
 579 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 580 {
 581     INT ret;
 582     POINT *pt;
 583
 584     switch (escape)
 585     {
 586     case ABORTDOC:
 587         return AbortDoc( hdc );
 588
 589     case ENDDOC:
 590         return EndDoc( hdc );
 591
 592     case GETPHYSPAGESIZE:
 593         pt = out_data;
 594         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 595         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 596         return 1;
 597
 598     case GETPRINTINGOFFSET:
 599         pt = out_data;
 600         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 601         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 602         return 1;
 603
 604     case GETSCALINGFACTOR:
 605         pt = out_data;
 606         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 607         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 608         return 1;
 609
 610     case NEWFRAME:
 611         return EndPage( hdc );
 612
 613     case SETABORTPROC:
 614         return SetAbortProc( hdc, (ABORTPROC)in_data );
 615
 616     case STARTDOC:
 617         {
 618             DOCINFOA doc;
 619             char *name = NULL;
 620
 621             /* in_data may not be 0 terminated so we must copy it */
 622             if (in_data)
 623             {
 624                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 625                 memcpy( name, in_data, in_count );
 626                 name[in_count] = 0;
 627             }
 628             /* out_data is actually a pointer to the DocInfo structure and used as
 629              * a second input parameter */
 630             if (out_data) doc = *(DOCINFOA *)out_data;
 631             else
 632             {
 633                 doc.cbSize = sizeof(doc);
 634                 doc.lpszOutput = NULL;
 635                 doc.lpszDatatype = NULL;
 636                 doc.fwType = 0;
 637             }
 638             doc.lpszDocName = name;
 639             ret = StartDocA( hdc, &doc );
 640             HeapFree( GetProcessHeap(), 0, name );
 641             if (ret > 0) ret = StartPage( hdc );
 642             return ret;
 643         }
 644
 645     case QUERYESCSUPPORT:
 646         {
 647             const INT *ptr = (const INT *)in_data;
 648             if (in_count < sizeof(INT)) return 0;
 649             switch(*ptr)
 650             {
 651             case ABORTDOC:
 652             case ENDDOC:
 653             case GETPHYSPAGESIZE:
 654             case GETPRINTINGOFFSET:
 655             case GETSCALINGFACTOR:
 656             case NEWFRAME:
 657             case QUERYESCSUPPORT:
 658             case SETABORTPROC:
 659             case STARTDOC:
 660                 return TRUE;
 661             }
 662             break;
 663         }
 664     }
 665
 666     /* if not handled internally, pass it to the driver */
 667     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 668 }
 669
 670
 671 /******************************************************************************
 672  *              ExtEscape       [GDI32.@]
 673  *
 674  * Access capabilities of a particular device that are not available through GDI.
 675  *
 676  * PARAMS
 677  *    hdc         [I] Handle to device context
 678  *    nEscape     [I] Escape function
 679  *    cbInput     [I] Number of bytes in input structure
 680  *    lpszInData  [I] Pointer to input structure
 681  *    cbOutput    [I] Number of bytes in output structure
 682  *    lpszOutData [O] Pointer to output structure
 683  *
 684  * RETURNS
 685  *    Success: >0
 686  *    Not implemented: 0
 687  *    Failure: <0
 688  */
 689 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 690                       INT cbOutput, LPSTR lpszOutData )
 691 {
 692     INT ret = 0;
 693     DC * dc = DC_GetDCPtr( hdc );
 694     if (dc)
 695     {
 696         if (dc->funcs->pExtEscape)
 697             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 698         GDI_ReleaseObj( hdc );
 699     }
 700     return ret;
 701 }
 702
 703
 704 /*******************************************************************
 705  *      DrawEscape [GDI32.@]
 706  *
 707  *
 708  */
 709 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 710 {
 711     FIXME("DrawEscape, stub\n");
 712     return 0;
 713 }