dlls/gdi32/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   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
  23 #include <assert.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "winerror.h"
  33 #include "wownt32.h"
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  39
  40 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  41
  42 static BOOL DC_DeleteObject( HGDIOBJ handle );
  43
  44 static const struct gdi_obj_funcs dc_funcs =
  45 {
  46     NULL,             /* pSelectObject */
  47     NULL,             /* pGetObjectA */
  48     NULL,             /* pGetObjectW */
  49     NULL,             /* pUnrealizeObject */
  50     DC_DeleteObject   /* pDeleteObject */
  51 };
  52
  53
  54 static inline DC *get_dc_obj( HDC hdc )
  55 {
  56     DC *dc = GDI_GetObjPtr( hdc, 0 );
  57     if (!dc) return NULL;
  58
  59     if ((dc->header.type != OBJ_DC) &&
  60         (dc->header.type != OBJ_MEMDC) &&
  61         (dc->header.type != OBJ_METADC) &&
  62         (dc->header.type != OBJ_ENHMETADC))
  63     {
  64         GDI_ReleaseObj( hdc );
  65         SetLastError( ERROR_INVALID_HANDLE );
  66         dc = NULL;
  67     }
  68     return dc;
  69 }
  70
  71
  72 /***********************************************************************
  73  *           alloc_dc_ptr
  74  */
  75 DC *alloc_dc_ptr( const DC_FUNCTIONS *funcs, WORD magic )
  76 {
  77     DC *dc;
  78
  79     if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
  80
  81     dc->funcs               = funcs;
  82     dc->physDev             = NULL;
  83     dc->thread              = GetCurrentThreadId();
  84     dc->refcount            = 1;
  85     dc->dirty               = 0;
  86     dc->saveLevel           = 0;
  87     dc->saved_dc            = 0;
  88     dc->dwHookData          = 0;
  89     dc->hookProc            = NULL;
  90     dc->hookThunk           = NULL;
  91     dc->wndOrgX             = 0;
  92     dc->wndOrgY             = 0;
  93     dc->wndExtX             = 1;
  94     dc->wndExtY             = 1;
  95     dc->vportOrgX           = 0;
  96     dc->vportOrgY           = 0;
  97     dc->vportExtX           = 1;
  98     dc->vportExtY           = 1;
  99     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
 100     dc->flags               = 0;
 101     dc->layout              = 0;
 102     dc->hClipRgn            = 0;
 103     dc->hMetaRgn            = 0;
 104     dc->hMetaClipRgn        = 0;
 105     dc->hVisRgn             = 0;
 106     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 107     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 108     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 109     dc->hBitmap             = 0;
 110     dc->hDevice             = 0;
 111     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 112     dc->gdiFont             = 0;
 113     dc->ROPmode             = R2_COPYPEN;
 114     dc->polyFillMode        = ALTERNATE;
 115     dc->stretchBltMode      = BLACKONWHITE;
 116     dc->relAbsMode          = ABSOLUTE;
 117     dc->backgroundMode      = OPAQUE;
 118     dc->backgroundColor     = RGB( 255, 255, 255 );
 119     dc->dcBrushColor        = RGB( 255, 255, 255 );
 120     dc->dcPenColor          = RGB( 0, 0, 0 );
 121     dc->textColor           = RGB( 0, 0, 0 );
 122     dc->brushOrgX           = 0;
 123     dc->brushOrgY           = 0;
 124     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 125     dc->charExtra           = 0;
 126     dc->breakExtra          = 0;
 127     dc->breakRem            = 0;
 128     dc->MapMode             = MM_TEXT;
 129     dc->GraphicsMode        = GM_COMPATIBLE;
 130     dc->pAbortProc          = NULL;
 131     dc->CursPosX            = 0;
 132     dc->CursPosY            = 0;
 133     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 134     dc->xformWorld2Wnd.eM11 = 1.0f;
 135     dc->xformWorld2Wnd.eM12 = 0.0f;
 136     dc->xformWorld2Wnd.eM21 = 0.0f;
 137     dc->xformWorld2Wnd.eM22 = 1.0f;
 138     dc->xformWorld2Wnd.eDx  = 0.0f;
 139     dc->xformWorld2Wnd.eDy  = 0.0f;
 140     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 141     dc->xformVport2World    = dc->xformWorld2Wnd;
 142     dc->vport2WorldValid    = TRUE;
 143     dc->BoundsRect.left     = 0;
 144     dc->BoundsRect.top      = 0;
 145     dc->BoundsRect.right    = 0;
 146     dc->BoundsRect.bottom   = 0;
 147     dc->saved_visrgn        = NULL;
 148     PATH_InitGdiPath(&dc->path);
 149
 150     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 151     {
 152         HeapFree( GetProcessHeap(), 0, dc );
 153         dc = NULL;
 154     }
 155     return dc;
 156 }
 157
 158
 159
 160 /***********************************************************************
 161  *           free_dc_ptr
 162  */
 163 BOOL free_dc_ptr( DC *dc )
 164 {
 165     assert( dc->refcount == 1 );
 166     if (free_gdi_handle( dc->hSelf ) != dc) return FALSE;  /* shouldn't happen */
 167     return HeapFree( GetProcessHeap(), 0, dc );
 168 }
 169
 170
 171 /***********************************************************************
 172  *           get_dc_ptr
 173  *
 174  * Retrieve a DC pointer but release the GDI lock.
 175  */
 176 DC *get_dc_ptr( HDC hdc )
 177 {
 178     DC *dc = get_dc_obj( hdc );
 179     if (!dc) return NULL;
 180
 181     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 182     {
 183         dc->thread = GetCurrentThreadId();
 184     }
 185     else if (dc->thread != GetCurrentThreadId())
 186     {
 187         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 188         GDI_ReleaseObj( hdc );
 189         return NULL;
 190     }
 191     else InterlockedIncrement( &dc->refcount );
 192
 193     GDI_ReleaseObj( hdc );
 194     return dc;
 195 }
 196
 197
 198 /***********************************************************************
 199  *           release_dc_ptr
 200  */
 201 void release_dc_ptr( DC *dc )
 202 {
 203     LONG ref;
 204
 205     dc->thread = 0;
 206     ref = InterlockedDecrement( &dc->refcount );
 207     assert( ref >= 0 );
 208     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 209 }
 210
 211
 212 /***********************************************************************
 213  *           update_dc
 214  *
 215  * Make sure the DC vis region is up to date.
 216  * This function may call up to USER so the GDI lock should _not_
 217  * be held when calling it.
 218  */
 219 void update_dc( DC *dc )
 220 {
 221     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookThunk)
 222         dc->hookThunk( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 223 }
 224
 225
 226 /***********************************************************************
 227  *           DC_DeleteObject
 228  */
 229 static BOOL DC_DeleteObject( HGDIOBJ handle )
 230 {
 231     return DeleteDC( handle );
 232 }
 233
 234
 235 /***********************************************************************
 236  *           DC_InitDC
 237  *
 238  * Setup device-specific DC values for a newly created DC.
 239  */
 240 void DC_InitDC( DC* dc )
 241 {
 242     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 243     SetTextColor( dc->hSelf, dc->textColor );
 244     SetBkColor( dc->hSelf, dc->backgroundColor );
 245     SelectObject( dc->hSelf, dc->hPen );
 246     SelectObject( dc->hSelf, dc->hBrush );
 247     SelectObject( dc->hSelf, dc->hFont );
 248     CLIPPING_UpdateGCRegion( dc );
 249 }
 250
 251
 252 /***********************************************************************
 253  *           DC_InvertXform
 254  *
 255  * Computes the inverse of the transformation xformSrc and stores it to
 256  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 257  * is singular.
 258  */
 259 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 260 {
 261     double determinant;
 262
 263     determinant = xformSrc->eM11*xformSrc->eM22 -
 264         xformSrc->eM12*xformSrc->eM21;
 265     if (determinant > -1e-12 && determinant < 1e-12)
 266         return FALSE;
 267
 268     xformDest->eM11 =  xformSrc->eM22 / determinant;
 269     xformDest->eM12 = -xformSrc->eM12 / determinant;
 270     xformDest->eM21 = -xformSrc->eM21 / determinant;
 271     xformDest->eM22 =  xformSrc->eM11 / determinant;
 272     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 273                        xformSrc->eDy * xformDest->eM21;
 274     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 275                        xformSrc->eDy * xformDest->eM22;
 276
 277     return TRUE;
 278 }
 279
 280
 281 /***********************************************************************
 282  *           DC_UpdateXforms
 283  *
 284  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 285  * fields of the specified DC by creating a transformation that
 286  * represents the current mapping mode and combining it with the DC's
 287  * world transform. This function should be called whenever the
 288  * parameters associated with the mapping mode (window and viewport
 289  * extents and origins) or the world transform change.
 290  */
 291 void DC_UpdateXforms( DC *dc )
 292 {
 293     XFORM xformWnd2Vport, oldworld2vport;
 294     double scaleX, scaleY;
 295
 296     /* Construct a transformation to do the window-to-viewport conversion */
 297     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 298     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 299     xformWnd2Vport.eM11 = scaleX;
 300     xformWnd2Vport.eM12 = 0.0;
 301     xformWnd2Vport.eM21 = 0.0;
 302     xformWnd2Vport.eM22 = scaleY;
 303     xformWnd2Vport.eDx  = (double)dc->vportOrgX -
 304         scaleX * (double)dc->wndOrgX;
 305     xformWnd2Vport.eDy  = (double)dc->vportOrgY -
 306         scaleY * (double)dc->wndOrgY;
 307
 308     oldworld2vport = dc->xformWorld2Vport;
 309     /* Combine with the world transformation */
 310     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 311         &xformWnd2Vport );
 312
 313     /* Create inverse of world-to-viewport transformation */
 314     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 315         &dc->xformVport2World );
 316
 317     /* Reselect the font and pen back into the dc so that the size
 318        gets updated. */
 319     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 320         !GdiIsMetaFileDC(dc->hSelf))
 321     {
 322         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 323         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 324     }
 325 }
 326
 327
 328 /***********************************************************************
 329  *           get_dc_state   (Not a Windows API)
 330  */
 331 HDC get_dc_state( HDC hdc )
 332 {
 333     DC * newdc, * dc;
 334     HGDIOBJ handle;
 335
 336     if (!(dc = get_dc_ptr( hdc ))) return 0;
 337     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc ))))
 338     {
 339       release_dc_ptr( dc );
 340       return 0;
 341     }
 342
 343     newdc->flags            = dc->flags | DC_SAVED;
 344     newdc->layout           = dc->layout;
 345     newdc->hPen             = dc->hPen;
 346     newdc->hBrush           = dc->hBrush;
 347     newdc->hFont            = dc->hFont;
 348     newdc->hBitmap          = dc->hBitmap;
 349     newdc->hDevice          = dc->hDevice;
 350     newdc->hPalette         = dc->hPalette;
 351     newdc->ROPmode          = dc->ROPmode;
 352     newdc->polyFillMode     = dc->polyFillMode;
 353     newdc->stretchBltMode   = dc->stretchBltMode;
 354     newdc->relAbsMode       = dc->relAbsMode;
 355     newdc->backgroundMode   = dc->backgroundMode;
 356     newdc->backgroundColor  = dc->backgroundColor;
 357     newdc->textColor        = dc->textColor;
 358     newdc->dcBrushColor     = dc->dcBrushColor;
 359     newdc->dcPenColor       = dc->dcPenColor;
 360     newdc->brushOrgX        = dc->brushOrgX;
 361     newdc->brushOrgY        = dc->brushOrgY;
 362     newdc->textAlign        = dc->textAlign;
 363     newdc->charExtra        = dc->charExtra;
 364     newdc->breakExtra       = dc->breakExtra;
 365     newdc->breakRem         = dc->breakRem;
 366     newdc->MapMode          = dc->MapMode;
 367     newdc->GraphicsMode     = dc->GraphicsMode;
 368     newdc->CursPosX         = dc->CursPosX;
 369     newdc->CursPosY         = dc->CursPosY;
 370     newdc->ArcDirection     = dc->ArcDirection;
 371     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 372     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 373     newdc->xformVport2World = dc->xformVport2World;
 374     newdc->vport2WorldValid = dc->vport2WorldValid;
 375     newdc->wndOrgX          = dc->wndOrgX;
 376     newdc->wndOrgY          = dc->wndOrgY;
 377     newdc->wndExtX          = dc->wndExtX;
 378     newdc->wndExtY          = dc->wndExtY;
 379     newdc->vportOrgX        = dc->vportOrgX;
 380     newdc->vportOrgY        = dc->vportOrgY;
 381     newdc->vportExtX        = dc->vportExtX;
 382     newdc->vportExtY        = dc->vportExtY;
 383     newdc->BoundsRect       = dc->BoundsRect;
 384     newdc->gdiFont          = dc->gdiFont;
 385
 386     newdc->thread    = GetCurrentThreadId();
 387     newdc->refcount  = 1;
 388     newdc->saveLevel = 0;
 389     newdc->saved_dc  = 0;
 390
 391     PATH_InitGdiPath( &newdc->path );
 392
 393     newdc->pAbortProc = NULL;
 394     newdc->hookThunk  = NULL;
 395     newdc->hookProc   = 0;
 396     newdc->saved_visrgn = NULL;
 397
 398     if (!(newdc->hSelf = alloc_gdi_handle( &newdc->header, dc->header.type, &dc_funcs )))
 399     {
 400         HeapFree( GetProcessHeap(), 0, newdc );
 401         release_dc_ptr( dc );
 402         return 0;
 403     }
 404     handle = newdc->hSelf;
 405     TRACE("(%p): returning %p\n", hdc, handle );
 406
 407     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 408
 409     newdc->hVisRgn      = 0;
 410     newdc->hClipRgn     = 0;
 411     newdc->hMetaRgn     = 0;
 412     newdc->hMetaClipRgn = 0;
 413     if (dc->hClipRgn)
 414     {
 415         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 416         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 417     }
 418     if (dc->hMetaRgn)
 419     {
 420         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 421         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 422     }
 423     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 424
 425     release_dc_ptr( newdc );
 426     release_dc_ptr( dc );
 427     return handle;
 428 }
 429
 430
 431 /***********************************************************************
 432  *           set_dc_state   (Not a Windows API)
 433  */
 434 void set_dc_state( HDC hdc, HDC hdcs )
 435 {
 436     DC *dc, *dcs;
 437
 438     if (!(dc = get_dc_ptr( hdc ))) return;
 439     if (!(dcs = get_dc_ptr( hdcs )))
 440     {
 441         release_dc_ptr( dc );
 442         return;
 443     }
 444     if (!(dcs->flags & DC_SAVED))
 445     {
 446         release_dc_ptr( dc );
 447         release_dc_ptr( dcs );
 448         return;
 449     }
 450     TRACE("%p %p\n", hdc, hdcs );
 451
 452     update_dc( dc );
 453     dc->flags            = dcs->flags & ~DC_SAVED;
 454     dc->layout           = dcs->layout;
 455     dc->hDevice          = dcs->hDevice;
 456     dc->ROPmode          = dcs->ROPmode;
 457     dc->polyFillMode     = dcs->polyFillMode;
 458     dc->stretchBltMode   = dcs->stretchBltMode;
 459     dc->relAbsMode       = dcs->relAbsMode;
 460     dc->backgroundMode   = dcs->backgroundMode;
 461     dc->backgroundColor  = dcs->backgroundColor;
 462     dc->textColor        = dcs->textColor;
 463     dc->dcBrushColor     = dcs->dcBrushColor;
 464     dc->dcPenColor       = dcs->dcPenColor;
 465     dc->brushOrgX        = dcs->brushOrgX;
 466     dc->brushOrgY        = dcs->brushOrgY;
 467     dc->textAlign        = dcs->textAlign;
 468     dc->charExtra        = dcs->charExtra;
 469     dc->breakExtra       = dcs->breakExtra;
 470     dc->breakRem         = dcs->breakRem;
 471     dc->MapMode          = dcs->MapMode;
 472     dc->GraphicsMode     = dcs->GraphicsMode;
 473     dc->CursPosX         = dcs->CursPosX;
 474     dc->CursPosY         = dcs->CursPosY;
 475     dc->ArcDirection     = dcs->ArcDirection;
 476     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 477     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 478     dc->xformVport2World = dcs->xformVport2World;
 479     dc->vport2WorldValid = dcs->vport2WorldValid;
 480     dc->BoundsRect       = dcs->BoundsRect;
 481
 482     dc->wndOrgX          = dcs->wndOrgX;
 483     dc->wndOrgY          = dcs->wndOrgY;
 484     dc->wndExtX          = dcs->wndExtX;
 485     dc->wndExtY          = dcs->wndExtY;
 486     dc->vportOrgX        = dcs->vportOrgX;
 487     dc->vportOrgY        = dcs->vportOrgY;
 488     dc->vportExtX        = dcs->vportExtX;
 489     dc->vportExtY        = dcs->vportExtY;
 490
 491     if (dcs->hClipRgn)
 492     {
 493         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 494         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 495     }
 496     else
 497     {
 498         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 499         dc->hClipRgn = 0;
 500     }
 501     if (dcs->hMetaRgn)
 502     {
 503         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 504         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 505     }
 506     else
 507     {
 508         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 509         dc->hMetaRgn = 0;
 510     }
 511     CLIPPING_UpdateGCRegion( dc );
 512
 513     SelectObject( hdc, dcs->hBitmap );
 514     SelectObject( hdc, dcs->hBrush );
 515     SelectObject( hdc, dcs->hFont );
 516     SelectObject( hdc, dcs->hPen );
 517     SetBkColor( hdc, dcs->backgroundColor);
 518     SetTextColor( hdc, dcs->textColor);
 519     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 520     release_dc_ptr( dc );
 521     release_dc_ptr( dcs );
 522 }
 523
 524
 525 /***********************************************************************
 526  *           SaveDC    (GDI32.@)
 527  */
 528 INT WINAPI SaveDC( HDC hdc )
 529 {
 530     HDC hdcs;
 531     DC * dc, * dcs;
 532     INT ret;
 533
 534     dc = get_dc_ptr( hdc );
 535     if (!dc) return 0;
 536
 537     if(dc->funcs->pSaveDC)
 538     {
 539         ret = dc->funcs->pSaveDC( dc->physDev );
 540         if(ret)
 541             ret = ++dc->saveLevel;
 542         release_dc_ptr( dc );
 543         return ret;
 544     }
 545
 546     if (!(hdcs = get_dc_state( hdc )))
 547     {
 548         release_dc_ptr( dc );
 549         return 0;
 550     }
 551     dcs = get_dc_ptr( hdcs );
 552
 553     /* Copy path. The reason why path saving / restoring is in SaveDC/
 554      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 555      * functions are only in Win16 (which doesn't have paths) and that
 556      * SetDCState doesn't allow us to signal an error (which can happen
 557      * when copying paths).
 558      */
 559     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 560     {
 561         release_dc_ptr( dc );
 562         release_dc_ptr( dcs );
 563         DeleteDC( hdcs );
 564         return 0;
 565     }
 566
 567     dcs->saved_dc = dc->saved_dc;
 568     dc->saved_dc = hdcs;
 569     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 570     ret = ++dc->saveLevel;
 571     release_dc_ptr( dcs );
 572     release_dc_ptr( dc );
 573     return ret;
 574 }
 575
 576
 577 /***********************************************************************
 578  *           RestoreDC    (GDI32.@)
 579  */
 580 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 581 {
 582     DC * dc, * dcs;
 583     BOOL success;
 584
 585     TRACE("%p %d\n", hdc, level );
 586     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 587
 588     if(abs(level) > dc->saveLevel || level == 0)
 589     {
 590         release_dc_ptr( dc );
 591         return FALSE;
 592     }
 593
 594     update_dc( dc );
 595
 596     if(dc->funcs->pRestoreDC)
 597     {
 598         success = dc->funcs->pRestoreDC( dc->physDev, level );
 599         if(level < 0) level = dc->saveLevel + level + 1;
 600         if(success)
 601             dc->saveLevel = level - 1;
 602         release_dc_ptr( dc );
 603         return success;
 604     }
 605
 606     if (level < 0) level = dc->saveLevel + level + 1;
 607     success=TRUE;
 608     while (dc->saveLevel >= level)
 609     {
 610         HDC hdcs = dc->saved_dc;
 611         if (!(dcs = get_dc_ptr( hdcs )))
 612         {
 613             success = FALSE;
 614             break;
 615         }
 616         dc->saved_dc = dcs->saved_dc;
 617         dcs->saved_dc = 0;
 618         if (--dc->saveLevel < level)
 619         {
 620             set_dc_state( hdc, hdcs );
 621             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 622                 /* FIXME: This might not be quite right, since we're
 623                  * returning FALSE but still destroying the saved DC state */
 624                 success=FALSE;
 625         }
 626         release_dc_ptr( dcs );
 627         DeleteDC( hdcs );
 628     }
 629     release_dc_ptr( dc );
 630     return success;
 631 }
 632
 633
 634 /***********************************************************************
 635  *           CreateDCW    (GDI32.@)
 636  */
 637 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 638                       const DEVMODEW *initData )
 639 {
 640     HDC hdc;
 641     DC * dc;
 642     const DC_FUNCTIONS *funcs;
 643     WCHAR buf[300];
 644
 645     GDI_CheckNotLock();
 646
 647     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 648     {
 649         if (!driver)
 650         {
 651             ERR( "no device found for %s\n", debugstr_w(device) );
 652             return 0;
 653         }
 654         strcpyW(buf, driver);
 655     }
 656
 657     if (!(funcs = DRIVER_load_driver( buf )))
 658     {
 659         ERR( "no driver found for %s\n", debugstr_w(buf) );
 660         return 0;
 661     }
 662     if (!(dc = alloc_dc_ptr( funcs, OBJ_DC ))) goto error;
 663     hdc = dc->hSelf;
 664
 665     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 666     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 667
 668     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 669           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 670
 671     if (dc->funcs->pCreateDC &&
 672         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 673     {
 674         WARN("creation aborted by device\n" );
 675         goto error;
 676     }
 677
 678     SetRectRgn( dc->hVisRgn, 0, 0,
 679                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 680
 681     DC_InitDC( dc );
 682     release_dc_ptr( dc );
 683     return hdc;
 684
 685 error:
 686     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 687     if (dc) free_dc_ptr( dc );
 688     DRIVER_release_driver( funcs );
 689     return 0;
 690 }
 691
 692
 693 /***********************************************************************
 694  *           CreateDCA    (GDI32.@)
 695  */
 696 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 697                       const DEVMODEA *initData )
 698 {
 699     UNICODE_STRING driverW, deviceW, outputW;
 700     DEVMODEW *initDataW;
 701     HDC ret;
 702
 703     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 704     else driverW.Buffer = NULL;
 705
 706     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 707     else deviceW.Buffer = NULL;
 708
 709     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 710     else outputW.Buffer = NULL;
 711
 712     initDataW = NULL;
 713     if (initData)
 714     {
 715         /* don't convert initData for DISPLAY driver, it's not used */
 716         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 717             initDataW = GdiConvertToDevmodeW(initData);
 718     }
 719
 720     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 721
 722     RtlFreeUnicodeString(&driverW);
 723     RtlFreeUnicodeString(&deviceW);
 724     RtlFreeUnicodeString(&outputW);
 725     HeapFree(GetProcessHeap(), 0, initDataW);
 726     return ret;
 727 }
 728
 729
 730 /***********************************************************************
 731  *           CreateICA    (GDI32.@)
 732  */
 733 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 734                           const DEVMODEA* initData )
 735 {
 736       /* Nothing special yet for ICs */
 737     return CreateDCA( driver, device, output, initData );
 738 }
 739
 740
 741 /***********************************************************************
 742  *           CreateICW    (GDI32.@)
 743  */
 744 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 745                           const DEVMODEW* initData )
 746 {
 747       /* Nothing special yet for ICs */
 748     return CreateDCW( driver, device, output, initData );
 749 }
 750
 751
 752 /***********************************************************************
 753  *           CreateCompatibleDC   (GDI32.@)
 754  */
 755 HDC WINAPI CreateCompatibleDC( HDC hdc )
 756 {
 757     DC *dc, *origDC;
 758     HDC ret;
 759     const DC_FUNCTIONS *funcs = NULL;
 760     PHYSDEV physDev = NULL;
 761
 762     GDI_CheckNotLock();
 763
 764     if ((origDC = get_dc_ptr( hdc )))
 765     {
 766         if (GetObjectType( hdc ) == OBJ_DC)
 767         {
 768             funcs = origDC->funcs;
 769             physDev = origDC->physDev;
 770         }
 771         release_dc_ptr( origDC );
 772         if (funcs) funcs = DRIVER_get_driver( funcs );
 773     }
 774     else if (hdc) return 0;
 775
 776     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 777
 778     if (!(dc = alloc_dc_ptr( funcs, OBJ_MEMDC ))) goto error;
 779
 780     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 781
 782     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 783     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 784
 785     /* Copy the driver-specific physical device info into
 786      * the new DC. The driver may use this read-only info
 787      * while creating the compatible DC below. */
 788     dc->physDev = physDev;
 789     ret = dc->hSelf;
 790
 791     if (dc->funcs->pCreateDC &&
 792         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 793     {
 794         WARN("creation aborted by device\n");
 795         goto error;
 796     }
 797
 798     DC_InitDC( dc );
 799     release_dc_ptr( dc );
 800     return ret;
 801
 802 error:
 803     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 804     if (dc) free_dc_ptr( dc );
 805     DRIVER_release_driver( funcs );
 806     return 0;
 807 }
 808
 809
 810 /***********************************************************************
 811  *           DeleteDC    (GDI32.@)
 812  */
 813 BOOL WINAPI DeleteDC( HDC hdc )
 814 {
 815     const DC_FUNCTIONS *funcs = NULL;
 816     DC * dc;
 817
 818     TRACE("%p\n", hdc );
 819
 820     GDI_CheckNotLock();
 821
 822     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 823     if (dc->refcount != 1)
 824     {
 825         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 826         release_dc_ptr( dc );
 827         return FALSE;
 828     }
 829
 830     /* Call hook procedure to check whether is it OK to delete this DC */
 831     if (dc->hookThunk && !dc->hookThunk( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 832     {
 833         release_dc_ptr( dc );
 834         return FALSE;
 835     }
 836
 837     while (dc->saveLevel)
 838     {
 839         DC * dcs;
 840         HDC hdcs = dc->saved_dc;
 841         if (!(dcs = get_dc_ptr( hdcs ))) break;
 842         dc->saved_dc = dcs->saved_dc;
 843         dc->saveLevel--;
 844         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 845         if (dcs->hMetaRgn) DeleteObject( dcs->hMetaRgn );
 846         if (dcs->hMetaClipRgn) DeleteObject( dcs->hMetaClipRgn );
 847         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 848         PATH_DestroyGdiPath(&dcs->path);
 849         free_dc_ptr( dcs );
 850     }
 851
 852     if (!(dc->flags & DC_SAVED))
 853     {
 854         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 855         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 856         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 857         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 858         funcs = dc->funcs;
 859         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 860         dc->physDev = NULL;
 861     }
 862
 863     while (dc->saved_visrgn)
 864     {
 865         struct saved_visrgn *next = dc->saved_visrgn->next;
 866         DeleteObject( dc->saved_visrgn->hrgn );
 867         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 868         dc->saved_visrgn = next;
 869     }
 870     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 871     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 872     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 873     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 874     PATH_DestroyGdiPath(&dc->path);
 875
 876     free_dc_ptr( dc );
 877     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 878     return TRUE;
 879 }
 880
 881
 882 /***********************************************************************
 883  *           ResetDCW    (GDI32.@)
 884  */
 885 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 886 {
 887     DC *dc;
 888     HDC ret = hdc;
 889
 890     if ((dc = get_dc_ptr( hdc )))
 891     {
 892         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 893         release_dc_ptr( dc );
 894     }
 895     return ret;
 896 }
 897
 898
 899 /***********************************************************************
 900  *           ResetDCA    (GDI32.@)
 901  */
 902 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 903 {
 904     DEVMODEW *devmodeW;
 905     HDC ret;
 906
 907     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 908     else devmodeW = NULL;
 909
 910     ret = ResetDCW(hdc, devmodeW);
 911
 912     HeapFree(GetProcessHeap(), 0, devmodeW);
 913     return ret;
 914 }
 915
 916
 917 /***********************************************************************
 918  *           GetDeviceCaps    (GDI32.@)
 919  */
 920 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 921 {
 922     DC *dc;
 923     INT ret = 0;
 924
 925     if ((dc = get_dc_ptr( hdc )))
 926     {
 927         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 928         else switch(cap)  /* return meaningful values for some entries */
 929         {
 930         case HORZRES:     ret = 640; break;
 931         case VERTRES:     ret = 480; break;
 932         case BITSPIXEL:   ret = 1; break;
 933         case PLANES:      ret = 1; break;
 934         case NUMCOLORS:   ret = 2; break;
 935         case ASPECTX:     ret = 36; break;
 936         case ASPECTY:     ret = 36; break;
 937         case ASPECTXY:    ret = 51; break;
 938         case LOGPIXELSX:  ret = 72; break;
 939         case LOGPIXELSY:  ret = 72; break;
 940         case SIZEPALETTE: ret = 2; break;
 941         }
 942         release_dc_ptr( dc );
 943     }
 944     return ret;
 945 }
 946
 947
 948 /***********************************************************************
 949  *              GetBkColor (GDI32.@)
 950  */
 951 COLORREF WINAPI GetBkColor( HDC hdc )
 952 {
 953     COLORREF ret = 0;
 954     DC * dc = get_dc_ptr( hdc );
 955     if (dc)
 956     {
 957         ret = dc->backgroundColor;
 958         release_dc_ptr( dc );
 959     }
 960     return ret;
 961 }
 962
 963
 964 /***********************************************************************
 965  *           SetBkColor    (GDI32.@)
 966  */
 967 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 968 {
 969     COLORREF oldColor;
 970     DC * dc = get_dc_ptr( hdc );
 971
 972     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 973
 974     if (!dc) return CLR_INVALID;
 975     oldColor = dc->backgroundColor;
 976     if (dc->funcs->pSetBkColor)
 977     {
 978         color = dc->funcs->pSetBkColor(dc->physDev, color);
 979         if (color == CLR_INVALID)  /* don't change it */
 980         {
 981             color = oldColor;
 982             oldColor = CLR_INVALID;
 983         }
 984     }
 985     dc->backgroundColor = color;
 986     release_dc_ptr( dc );
 987     return oldColor;
 988 }
 989
 990
 991 /***********************************************************************
 992  *              GetTextColor (GDI32.@)
 993  */
 994 COLORREF WINAPI GetTextColor( HDC hdc )
 995 {
 996     COLORREF ret = 0;
 997     DC * dc = get_dc_ptr( hdc );
 998     if (dc)
 999     {
1000         ret = dc->textColor;
1001         release_dc_ptr( dc );
1002     }
1003     return ret;
1004 }
1005
1006
1007 /***********************************************************************
1008  *           SetTextColor    (GDI32.@)
1009  */
1010 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
1011 {
1012     COLORREF oldColor;
1013     DC * dc = get_dc_ptr( hdc );
1014
1015     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
1016
1017     if (!dc) return CLR_INVALID;
1018     oldColor = dc->textColor;
1019     if (dc->funcs->pSetTextColor)
1020     {
1021         color = dc->funcs->pSetTextColor(dc->physDev, color);
1022         if (color == CLR_INVALID)  /* don't change it */
1023         {
1024             color = oldColor;
1025             oldColor = CLR_INVALID;
1026         }
1027     }
1028     dc->textColor = color;
1029     release_dc_ptr( dc );
1030     return oldColor;
1031 }
1032
1033
1034 /***********************************************************************
1035  *              GetTextAlign (GDI32.@)
1036  */
1037 UINT WINAPI GetTextAlign( HDC hdc )
1038 {
1039     UINT ret = 0;
1040     DC * dc = get_dc_ptr( hdc );
1041     if (dc)
1042     {
1043         ret = dc->textAlign;
1044         release_dc_ptr( dc );
1045     }
1046     return ret;
1047 }
1048
1049
1050 /***********************************************************************
1051  *           SetTextAlign    (GDI32.@)
1052  */
1053 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1054 {
1055     UINT ret;
1056     DC *dc = get_dc_ptr( hdc );
1057
1058     TRACE("hdc=%p align=%d\n", hdc, align);
1059
1060     if (!dc) return 0x0;
1061     ret = dc->textAlign;
1062     if (dc->funcs->pSetTextAlign)
1063         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1064             ret = GDI_ERROR;
1065     if (ret != GDI_ERROR)
1066         dc->textAlign = align;
1067     release_dc_ptr( dc );
1068     return ret;
1069 }
1070
1071 /***********************************************************************
1072  *           GetDCOrgEx  (GDI32.@)
1073  */
1074 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1075 {
1076     DC * dc;
1077
1078     if (!lpp) return FALSE;
1079     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1080
1081     lpp->x = lpp->y = 0;
1082     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1083     release_dc_ptr( dc );
1084     return TRUE;
1085 }
1086
1087
1088 /***********************************************************************
1089  *              GetGraphicsMode (GDI32.@)
1090  */
1091 INT WINAPI GetGraphicsMode( HDC hdc )
1092 {
1093     INT ret = 0;
1094     DC * dc = get_dc_ptr( hdc );
1095     if (dc)
1096     {
1097         ret = dc->GraphicsMode;
1098         release_dc_ptr( dc );
1099     }
1100     return ret;
1101 }
1102
1103
1104 /***********************************************************************
1105  *           SetGraphicsMode    (GDI32.@)
1106  */
1107 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1108 {
1109     INT ret = 0;
1110     DC *dc = get_dc_ptr( hdc );
1111
1112     /* One would think that setting the graphics mode to GM_COMPATIBLE
1113      * would also reset the world transformation matrix to the unity
1114      * matrix. However, in Windows, this is not the case. This doesn't
1115      * make a lot of sense to me, but that's the way it is.
1116      */
1117     if (!dc) return 0;
1118     if ((mode > 0) && (mode <= GM_LAST))
1119     {
1120         ret = dc->GraphicsMode;
1121         dc->GraphicsMode = mode;
1122     }
1123     release_dc_ptr( dc );
1124     return ret;
1125 }
1126
1127
1128 /***********************************************************************
1129  *              GetArcDirection (GDI32.@)
1130  */
1131 INT WINAPI GetArcDirection( HDC hdc )
1132 {
1133     INT ret = 0;
1134     DC * dc = get_dc_ptr( hdc );
1135     if (dc)
1136     {
1137         ret = dc->ArcDirection;
1138         release_dc_ptr( dc );
1139     }
1140     return ret;
1141 }
1142
1143
1144 /***********************************************************************
1145  *           SetArcDirection    (GDI32.@)
1146  */
1147 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1148 {
1149     DC * dc;
1150     INT nOldDirection = 0;
1151
1152     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1153     {
1154         SetLastError(ERROR_INVALID_PARAMETER);
1155         return 0;
1156     }
1157
1158     if ((dc = get_dc_ptr( hdc )))
1159     {
1160         if (dc->funcs->pSetArcDirection)
1161         {
1162             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1163         }
1164         nOldDirection = dc->ArcDirection;
1165         dc->ArcDirection = nDirection;
1166         release_dc_ptr( dc );
1167     }
1168     return nOldDirection;
1169 }
1170
1171
1172 /***********************************************************************
1173  *           GetWorldTransform    (GDI32.@)
1174  */
1175 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1176 {
1177     DC * dc;
1178     if (!xform) return FALSE;
1179     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1180     *xform = dc->xformWorld2Wnd;
1181     release_dc_ptr( dc );
1182     return TRUE;
1183 }
1184
1185
1186 /***********************************************************************
1187  *           GetTransform    (GDI32.@)
1188  */
1189 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1190 {
1191     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1192     FIXME("stub: don't know what to do for code %x\n", unknown );
1193     return FALSE;
1194 }
1195
1196
1197 /***********************************************************************
1198  *           SetWorldTransform    (GDI32.@)
1199  */
1200 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1201 {
1202     BOOL ret = FALSE;
1203     DC *dc;
1204
1205     if (!xform) return FALSE;
1206
1207     dc = get_dc_ptr( hdc );
1208     if (!dc) return FALSE;
1209
1210     /* Check that graphics mode is GM_ADVANCED */
1211     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1212
1213     TRACE("eM11 %f eM12 %f eM21 %f eM22 %f eDx %f eDy %f\n",
1214         xform->eM11, xform->eM12, xform->eM21, xform->eM22, xform->eDx, xform->eDy);
1215
1216     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
1217     if (xform->eM11 * xform->eM22 == xform->eM12 * xform->eM21) goto done;
1218
1219     if (dc->funcs->pSetWorldTransform)
1220     {
1221         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1222         if (!ret) goto done;
1223     }
1224
1225     dc->xformWorld2Wnd = *xform;
1226     DC_UpdateXforms( dc );
1227     ret = TRUE;
1228  done:
1229     release_dc_ptr( dc );
1230     return ret;
1231 }
1232
1233
1234 /****************************************************************************
1235  * ModifyWorldTransform [GDI32.@]
1236  * Modifies the world transformation for a device context.
1237  *
1238  * PARAMS
1239  *    hdc   [I] Handle to device context
1240  *    xform [I] XFORM structure that will be used to modify the world
1241  *              transformation
1242  *    iMode [I] Specifies in what way to modify the world transformation
1243  *              Possible values:
1244  *              MWT_IDENTITY
1245  *                 Resets the world transformation to the identity matrix.
1246  *                 The parameter xform is ignored.
1247  *              MWT_LEFTMULTIPLY
1248  *                 Multiplies xform into the world transformation matrix from
1249  *                 the left.
1250  *              MWT_RIGHTMULTIPLY
1251  *                 Multiplies xform into the world transformation matrix from
1252  *                 the right.
1253  *
1254  * RETURNS
1255  *  Success: TRUE.
1256  *  Failure: FALSE. Use GetLastError() to determine the cause.
1257  */
1258 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1259     DWORD iMode )
1260 {
1261     BOOL ret = FALSE;
1262     DC *dc = get_dc_ptr( hdc );
1263
1264     /* Check for illegal parameters */
1265     if (!dc) return FALSE;
1266     if (!xform && iMode != MWT_IDENTITY) goto done;
1267
1268     /* Check that graphics mode is GM_ADVANCED */
1269     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1270
1271     if (dc->funcs->pModifyWorldTransform)
1272     {
1273         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1274         if (!ret) goto done;
1275     }
1276
1277     switch (iMode)
1278     {
1279         case MWT_IDENTITY:
1280             dc->xformWorld2Wnd.eM11 = 1.0f;
1281             dc->xformWorld2Wnd.eM12 = 0.0f;
1282             dc->xformWorld2Wnd.eM21 = 0.0f;
1283             dc->xformWorld2Wnd.eM22 = 1.0f;
1284             dc->xformWorld2Wnd.eDx  = 0.0f;
1285             dc->xformWorld2Wnd.eDy  = 0.0f;
1286             break;
1287         case MWT_LEFTMULTIPLY:
1288             CombineTransform( &dc->xformWorld2Wnd, xform,
1289                 &dc->xformWorld2Wnd );
1290             break;
1291         case MWT_RIGHTMULTIPLY:
1292             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1293                 xform );
1294             break;
1295         default:
1296             goto done;
1297     }
1298
1299     DC_UpdateXforms( dc );
1300     ret = TRUE;
1301  done:
1302     release_dc_ptr( dc );
1303     return ret;
1304 }
1305
1306
1307 /****************************************************************************
1308  * CombineTransform [GDI32.@]
1309  * Combines two transformation matrices.
1310  *
1311  * PARAMS
1312  *    xformResult [O] Stores the result of combining the two matrices
1313  *    xform1      [I] Specifies the first matrix to apply
1314  *    xform2      [I] Specifies the second matrix to apply
1315  *
1316  * REMARKS
1317  *    The same matrix can be passed in for more than one of the parameters.
1318  *
1319  * RETURNS
1320  *  Success: TRUE.
1321  *  Failure: FALSE. Use GetLastError() to determine the cause.
1322  */
1323 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1324     const XFORM *xform2 )
1325 {
1326     XFORM xformTemp;
1327
1328     /* Check for illegal parameters */
1329     if (!xformResult || !xform1 || !xform2)
1330         return FALSE;
1331
1332     /* Create the result in a temporary XFORM, since xformResult may be
1333      * equal to xform1 or xform2 */
1334     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1335                      xform1->eM12 * xform2->eM21;
1336     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1337                      xform1->eM12 * xform2->eM22;
1338     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1339                      xform1->eM22 * xform2->eM21;
1340     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1341                      xform1->eM22 * xform2->eM22;
1342     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1343                      xform1->eDy  * xform2->eM21 +
1344                      xform2->eDx;
1345     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1346                      xform1->eDy  * xform2->eM22 +
1347                      xform2->eDy;
1348
1349     /* Copy the result to xformResult */
1350     *xformResult = xformTemp;
1351
1352     return TRUE;
1353 }
1354
1355
1356 /***********************************************************************
1357  *           SetDCHook   (GDI32.@)
1358  *
1359  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1360  */
1361 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1362 {
1363     DC *dc = get_dc_ptr( hdc );
1364
1365     if (!dc) return FALSE;
1366
1367     if (!(dc->flags & DC_SAVED))
1368     {
1369         dc->dwHookData = dwHookData;
1370         dc->hookThunk = hookProc;
1371     }
1372     release_dc_ptr( dc );
1373     return TRUE;
1374 }
1375
1376
1377 /***********************************************************************
1378  *           GetDCHook   (GDI32.@)
1379  *
1380  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1381  */
1382 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1383 {
1384     DC *dc = get_dc_ptr( hdc );
1385     DWORD_PTR ret;
1386
1387     if (!dc) return 0;
1388     if (proc) *proc = dc->hookThunk;
1389     ret = dc->dwHookData;
1390     release_dc_ptr( dc );
1391     return ret;
1392 }
1393
1394
1395 /* relay function to call the 16-bit DC hook proc */
1396 static BOOL WINAPI call_dc_hook16( HDC hdc, WORD code, DWORD_PTR data, LPARAM lParam )
1397 {
1398     WORD args[6];
1399     DWORD ret = 0;
1400     DC *dc = get_dc_ptr( hdc );
1401
1402     if (!dc) return FALSE;
1403     if (dc->hookProc)
1404     {
1405         args[5] = HDC_16(hdc);
1406         args[4] = code;
1407         args[3] = HIWORD(data);
1408         args[2] = LOWORD(data);
1409         args[1] = HIWORD(lParam);
1410         args[0] = LOWORD(lParam);
1411         WOWCallback16Ex( (DWORD)dc->hookProc, WCB16_PASCAL, sizeof(args), args, &ret );
1412     }
1413     release_dc_ptr( dc );
1414     return LOWORD(ret);
1415 }
1416
1417 /***********************************************************************
1418  *           SetDCHook   (GDI.190)
1419  */
1420 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1421 {
1422     DC *dc = get_dc_ptr( HDC_32(hdc16) );
1423
1424     if (!dc) return FALSE;
1425     if (!(dc->flags & DC_SAVED))
1426     {
1427         dc->dwHookData = dwHookData;
1428         dc->hookThunk = call_dc_hook16;
1429         dc->hookProc = hookProc;
1430     }
1431     release_dc_ptr( dc );
1432     return TRUE;
1433 }
1434
1435
1436 /***********************************************************************
1437  *           GetDCHook   (GDI.191)
1438  */
1439 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1440 {
1441     HDC hdc = HDC_32( hdc16 );
1442     DC *dc = get_dc_ptr( hdc );
1443     DWORD ret;
1444
1445     if (!dc) return 0;
1446     *phookProc = dc->hookProc;
1447     ret = dc->dwHookData;
1448     release_dc_ptr( dc );
1449     return ret;
1450 }
1451
1452
1453 /***********************************************************************
1454  *           SetHookFlags   (GDI32.@)
1455  *
1456  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1457  */
1458 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1459 {
1460     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1461     LONG ret = 0;
1462
1463     if (!dc) return 0;
1464
1465     /* "Undocumented Windows" info is slightly confusing. */
1466
1467     TRACE("hDC %p, flags %04x\n",hdc,flags);
1468
1469     if (flags & DCHF_INVALIDATEVISRGN)
1470         ret = InterlockedExchange( &dc->dirty, 1 );
1471     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1472         ret = InterlockedExchange( &dc->dirty, 0 );
1473
1474     GDI_ReleaseObj( dc );
1475     return ret;
1476 }
1477
1478 /***********************************************************************
1479  *           SetICMMode    (GDI32.@)
1480  */
1481 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1482 {
1483 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1484     if (iEnableICM == ICM_OFF) return ICM_OFF;
1485     if (iEnableICM == ICM_ON) return 0;
1486     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1487     return 0;
1488 }
1489
1490 /***********************************************************************
1491  *           GetDeviceGammaRamp    (GDI32.@)
1492  */
1493 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1494 {
1495     BOOL ret = FALSE;
1496     DC *dc = get_dc_ptr( hDC );
1497
1498     if( dc )
1499     {
1500         if (dc->funcs->pGetDeviceGammaRamp)
1501             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1502         release_dc_ptr( dc );
1503     }
1504     return ret;
1505 }
1506
1507 /***********************************************************************
1508  *           SetDeviceGammaRamp    (GDI32.@)
1509  */
1510 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1511 {
1512     BOOL ret = FALSE;
1513     DC *dc = get_dc_ptr( hDC );
1514
1515     if( dc )
1516     {
1517         if (dc->funcs->pSetDeviceGammaRamp)
1518             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1519         release_dc_ptr( dc );
1520     }
1521     return ret;
1522 }
1523
1524 /***********************************************************************
1525  *           GetColorSpace    (GDI32.@)
1526  */
1527 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1528 {
1529 /*FIXME    Need to to whatever GetColorSpace actually does */
1530     return 0;
1531 }
1532
1533 /***********************************************************************
1534  *           CreateColorSpaceA    (GDI32.@)
1535  */
1536 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1537 {
1538   FIXME( "stub\n" );
1539   return 0;
1540 }
1541
1542 /***********************************************************************
1543  *           CreateColorSpaceW    (GDI32.@)
1544  */
1545 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1546 {
1547   FIXME( "stub\n" );
1548   return 0;
1549 }
1550
1551 /***********************************************************************
1552  *           DeleteColorSpace     (GDI32.@)
1553  */
1554 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1555 {
1556   FIXME( "stub\n" );
1557
1558   return TRUE;
1559 }
1560
1561 /***********************************************************************
1562  *           SetColorSpace     (GDI32.@)
1563  */
1564 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1565 {
1566   FIXME( "stub\n" );
1567
1568   return hColorSpace;
1569 }
1570
1571 /***********************************************************************
1572  *           GetBoundsRect    (GDI32.@)
1573  */
1574 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1575 {
1576     UINT ret;
1577     DC *dc = get_dc_ptr( hdc );
1578
1579     if ( !dc ) return 0;
1580
1581     if (rect) *rect = dc->BoundsRect;
1582
1583     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1584
1585     if (flags & DCB_RESET)
1586     {
1587         dc->BoundsRect.left   = 0;
1588         dc->BoundsRect.top    = 0;
1589         dc->BoundsRect.right  = 0;
1590         dc->BoundsRect.bottom = 0;
1591         dc->flags &= ~DC_BOUNDS_SET;
1592     }
1593     release_dc_ptr( dc );
1594     return ret;
1595 }
1596
1597
1598 /***********************************************************************
1599  *           SetBoundsRect    (GDI32.@)
1600  */
1601 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1602 {
1603     UINT ret;
1604     DC *dc;
1605
1606     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1607     if (!(dc = get_dc_ptr( hdc ))) return 0;
1608
1609     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1610           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1611
1612     if (flags & DCB_RESET)
1613     {
1614         dc->BoundsRect.left   = 0;
1615         dc->BoundsRect.top    = 0;
1616         dc->BoundsRect.right  = 0;
1617         dc->BoundsRect.bottom = 0;
1618         dc->flags &= ~DC_BOUNDS_SET;
1619     }
1620
1621     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1622     {
1623         if (dc->flags & DC_BOUNDS_SET)
1624         {
1625             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1626             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1627             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1628             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1629         }
1630         else
1631         {
1632             dc->BoundsRect = *rect;
1633             dc->flags |= DC_BOUNDS_SET;
1634         }
1635     }
1636
1637     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1638     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1639
1640     release_dc_ptr( dc );
1641     return ret;
1642 }
1643
1644
1645 /***********************************************************************
1646  *              GetRelAbs               (GDI32.@)
1647  */
1648 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1649 {
1650     INT ret = 0;
1651     DC *dc = get_dc_ptr( hdc );
1652     if (dc)
1653     {
1654         ret = dc->relAbsMode;
1655         release_dc_ptr( dc );
1656     }
1657     return ret;
1658 }
1659
1660
1661
1662
1663 /***********************************************************************
1664  *              GetBkMode (GDI32.@)
1665  */
1666 INT WINAPI GetBkMode( HDC hdc )
1667 {
1668     INT ret = 0;
1669     DC * dc = get_dc_ptr( hdc );
1670     if (dc)
1671     {
1672         ret = dc->backgroundMode;
1673         release_dc_ptr( dc );
1674     }
1675     return ret;
1676 }
1677
1678
1679 /***********************************************************************
1680  *              SetBkMode (GDI32.@)
1681  */
1682 INT WINAPI SetBkMode( HDC hdc, INT mode )
1683 {
1684     INT ret;
1685     DC *dc;
1686     if ((mode <= 0) || (mode > BKMODE_LAST))
1687     {
1688         SetLastError(ERROR_INVALID_PARAMETER);
1689         return 0;
1690     }
1691     if (!(dc = get_dc_ptr( hdc ))) return 0;
1692
1693     ret = dc->backgroundMode;
1694     if (dc->funcs->pSetBkMode)
1695         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1696             ret = 0;
1697     if (ret)
1698         dc->backgroundMode = mode;
1699     release_dc_ptr( dc );
1700     return ret;
1701 }
1702
1703
1704 /***********************************************************************
1705  *              GetROP2 (GDI32.@)
1706  */
1707 INT WINAPI GetROP2( HDC hdc )
1708 {
1709     INT ret = 0;
1710     DC * dc = get_dc_ptr( hdc );
1711     if (dc)
1712     {
1713         ret = dc->ROPmode;
1714         release_dc_ptr( dc );
1715     }
1716     return ret;
1717 }
1718
1719
1720 /***********************************************************************
1721  *              SetROP2 (GDI32.@)
1722  */
1723 INT WINAPI SetROP2( HDC hdc, INT mode )
1724 {
1725     INT ret;
1726     DC *dc;
1727     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1728     {
1729         SetLastError(ERROR_INVALID_PARAMETER);
1730         return 0;
1731     }
1732     if (!(dc = get_dc_ptr( hdc ))) return 0;
1733     ret = dc->ROPmode;
1734     if (dc->funcs->pSetROP2)
1735         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1736             ret = 0;
1737     if (ret)
1738         dc->ROPmode = mode;
1739     release_dc_ptr( dc );
1740     return ret;
1741 }
1742
1743
1744 /***********************************************************************
1745  *              SetRelAbs (GDI32.@)
1746  */
1747 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1748 {
1749     INT ret;
1750     DC *dc;
1751     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1752     {
1753         SetLastError(ERROR_INVALID_PARAMETER);
1754         return 0;
1755     }
1756     if (!(dc = get_dc_ptr( hdc ))) return 0;
1757     if (dc->funcs->pSetRelAbs)
1758         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1759     else
1760     {
1761         ret = dc->relAbsMode;
1762         dc->relAbsMode = mode;
1763     }
1764     release_dc_ptr( dc );
1765     return ret;
1766 }
1767
1768
1769 /***********************************************************************
1770  *              GetPolyFillMode (GDI32.@)
1771  */
1772 INT WINAPI GetPolyFillMode( HDC hdc )
1773 {
1774     INT ret = 0;
1775     DC * dc = get_dc_ptr( hdc );
1776     if (dc)
1777     {
1778         ret = dc->polyFillMode;
1779         release_dc_ptr( dc );
1780     }
1781     return ret;
1782 }
1783
1784
1785 /***********************************************************************
1786  *              SetPolyFillMode (GDI32.@)
1787  */
1788 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1789 {
1790     INT ret;
1791     DC *dc;
1792     if ((mode <= 0) || (mode > POLYFILL_LAST))
1793     {
1794         SetLastError(ERROR_INVALID_PARAMETER);
1795         return 0;
1796     }
1797     if (!(dc = get_dc_ptr( hdc ))) return 0;
1798     ret = dc->polyFillMode;
1799     if (dc->funcs->pSetPolyFillMode)
1800         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1801             ret = 0;
1802     if (ret)
1803         dc->polyFillMode = mode;
1804     release_dc_ptr( dc );
1805     return ret;
1806 }
1807
1808
1809 /***********************************************************************
1810  *              GetStretchBltMode (GDI32.@)
1811  */
1812 INT WINAPI GetStretchBltMode( HDC hdc )
1813 {
1814     INT ret = 0;
1815     DC * dc = get_dc_ptr( hdc );
1816     if (dc)
1817     {
1818         ret = dc->stretchBltMode;
1819         release_dc_ptr( dc );
1820     }
1821     return ret;
1822 }
1823
1824
1825 /***********************************************************************
1826  *              SetStretchBltMode (GDI32.@)
1827  */
1828 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1829 {
1830     INT ret;
1831     DC *dc;
1832     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1833     {
1834         SetLastError(ERROR_INVALID_PARAMETER);
1835         return 0;
1836     }
1837     if (!(dc = get_dc_ptr( hdc ))) return 0;
1838     ret = dc->stretchBltMode;
1839     if (dc->funcs->pSetStretchBltMode)
1840         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1841             ret = 0;
1842     if (ret)
1843         dc->stretchBltMode = mode;
1844     release_dc_ptr( dc );
1845     return ret;
1846 }
1847
1848
1849 /***********************************************************************
1850  *              GetMapMode (GDI32.@)
1851  */
1852 INT WINAPI GetMapMode( HDC hdc )
1853 {
1854     INT ret = 0;
1855     DC * dc = get_dc_ptr( hdc );
1856     if (dc)
1857     {
1858         ret = dc->MapMode;
1859         release_dc_ptr( dc );
1860     }
1861     return ret;
1862 }
1863
1864
1865 /***********************************************************************
1866  *              GetBrushOrgEx (GDI32.@)
1867  */
1868 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1869 {
1870     DC * dc = get_dc_ptr( hdc );
1871     if (!dc) return FALSE;
1872     pt->x = dc->brushOrgX;
1873     pt->y = dc->brushOrgY;
1874     release_dc_ptr( dc );
1875     return TRUE;
1876 }
1877
1878
1879 /***********************************************************************
1880  *              GetCurrentPositionEx (GDI32.@)
1881  */
1882 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1883 {
1884     DC * dc = get_dc_ptr( hdc );
1885     if (!dc) return FALSE;
1886     pt->x = dc->CursPosX;
1887     pt->y = dc->CursPosY;
1888     release_dc_ptr( dc );
1889     return TRUE;
1890 }
1891
1892
1893 /***********************************************************************
1894  *              GetViewportExtEx (GDI32.@)
1895  */
1896 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1897 {
1898     DC * dc = get_dc_ptr( hdc );
1899     if (!dc) return FALSE;
1900     size->cx = dc->vportExtX;
1901     size->cy = dc->vportExtY;
1902     release_dc_ptr( dc );
1903     return TRUE;
1904 }
1905
1906
1907 /***********************************************************************
1908  *              GetViewportOrgEx (GDI32.@)
1909  */
1910 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1911 {
1912     DC * dc = get_dc_ptr( hdc );
1913     if (!dc) return FALSE;
1914     pt->x = dc->vportOrgX;
1915     pt->y = dc->vportOrgY;
1916     release_dc_ptr( dc );
1917     return TRUE;
1918 }
1919
1920
1921 /***********************************************************************
1922  *              GetWindowExtEx (GDI32.@)
1923  */
1924 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1925 {
1926     DC * dc = get_dc_ptr( hdc );
1927     if (!dc) return FALSE;
1928     size->cx = dc->wndExtX;
1929     size->cy = dc->wndExtY;
1930     release_dc_ptr( dc );
1931     return TRUE;
1932 }
1933
1934
1935 /***********************************************************************
1936  *              GetWindowOrgEx (GDI32.@)
1937  */
1938 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1939 {
1940     DC * dc = get_dc_ptr( hdc );
1941     if (!dc) return FALSE;
1942     pt->x = dc->wndOrgX;
1943     pt->y = dc->wndOrgY;
1944     release_dc_ptr( dc );
1945     return TRUE;
1946 }
1947
1948
1949 /***********************************************************************
1950  *           GetLayout    (GDI32.@)
1951  *
1952  * Gets left->right or right->left text layout flags of a dc.
1953  *
1954  */
1955 DWORD WINAPI GetLayout(HDC hdc)
1956 {
1957     DWORD layout = GDI_ERROR;
1958
1959     DC * dc = get_dc_ptr( hdc );
1960     if (dc)
1961     {
1962         layout = dc->layout;
1963         release_dc_ptr( dc );
1964     }
1965
1966     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1967
1968     return layout;
1969 }
1970
1971 /***********************************************************************
1972  *           SetLayout    (GDI32.@)
1973  *
1974  * Sets left->right or right->left text layout flags of a dc.
1975  *
1976  */
1977 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1978 {
1979     DWORD oldlayout = GDI_ERROR;
1980
1981     DC * dc = get_dc_ptr( hdc );
1982     if (dc)
1983     {
1984         oldlayout = dc->layout;
1985         dc->layout = layout;
1986         release_dc_ptr( dc );
1987     }
1988
1989     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1990
1991     return oldlayout;
1992 }
1993
1994 /***********************************************************************
1995  *           GetDCBrushColor    (GDI32.@)
1996  *
1997  * Retrieves the current brush color for the specified device
1998  * context (DC).
1999  *
2000  */
2001 COLORREF WINAPI GetDCBrushColor(HDC hdc)
2002 {
2003     DC *dc;
2004     COLORREF dcBrushColor = CLR_INVALID;
2005
2006     TRACE("hdc(%p)\n", hdc);
2007
2008     dc = get_dc_ptr( hdc );
2009     if (dc)
2010     {
2011         dcBrushColor = dc->dcBrushColor;
2012         release_dc_ptr( dc );
2013     }
2014
2015     return dcBrushColor;
2016 }
2017
2018 /***********************************************************************
2019  *           SetDCBrushColor    (GDI32.@)
2020  *
2021  * Sets the current device context (DC) brush color to the specified
2022  * color value. If the device cannot represent the specified color
2023  * value, the color is set to the nearest physical color.
2024  *
2025  */
2026 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2027 {
2028     DC *dc;
2029     COLORREF oldClr = CLR_INVALID;
2030
2031     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2032
2033     dc = get_dc_ptr( hdc );
2034     if (dc)
2035     {
2036         if (dc->funcs->pSetDCBrushColor)
2037             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2038         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2039         {
2040             /* If DC_BRUSH is selected, update driver pen color */
2041             HBRUSH hBrush = CreateSolidBrush( crColor );
2042             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2043             DeleteObject( hBrush );
2044         }
2045
2046         if (crColor != CLR_INVALID)
2047         {
2048             oldClr = dc->dcBrushColor;
2049             dc->dcBrushColor = crColor;
2050         }
2051
2052         release_dc_ptr( dc );
2053     }
2054
2055     return oldClr;
2056 }
2057
2058 /***********************************************************************
2059  *           GetDCPenColor    (GDI32.@)
2060  *
2061  * Retrieves the current pen color for the specified device
2062  * context (DC).
2063  *
2064  */
2065 COLORREF WINAPI GetDCPenColor(HDC hdc)
2066 {
2067     DC *dc;
2068     COLORREF dcPenColor = CLR_INVALID;
2069
2070     TRACE("hdc(%p)\n", hdc);
2071
2072     dc = get_dc_ptr( hdc );
2073     if (dc)
2074     {
2075         dcPenColor = dc->dcPenColor;
2076         release_dc_ptr( dc );
2077     }
2078
2079     return dcPenColor;
2080 }
2081
2082 /***********************************************************************
2083  *           SetDCPenColor    (GDI32.@)
2084  *
2085  * Sets the current device context (DC) pen color to the specified
2086  * color value. If the device cannot represent the specified color
2087  * value, the color is set to the nearest physical color.
2088  *
2089  */
2090 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2091 {
2092     DC *dc;
2093     COLORREF oldClr = CLR_INVALID;
2094
2095     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2096
2097     dc = get_dc_ptr( hdc );
2098     if (dc)
2099     {
2100         if (dc->funcs->pSetDCPenColor)
2101             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2102         else if (dc->hPen == GetStockObject( DC_PEN ))
2103         {
2104             /* If DC_PEN is selected, update the driver pen color */
2105             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2106             HPEN hPen = CreatePenIndirect( &logpen );
2107             dc->funcs->pSelectPen( dc->physDev, hPen );
2108             DeleteObject( hPen );
2109         }
2110
2111         if (crColor != CLR_INVALID)
2112         {
2113             oldClr = dc->dcPenColor;
2114             dc->dcPenColor = crColor;
2115         }
2116
2117         release_dc_ptr( dc );
2118     }
2119
2120     return oldClr;
2121 }
2122
2123 /***********************************************************************
2124  *           CancelDC    (GDI32.@)
2125  */
2126 BOOL WINAPI CancelDC(HDC hdc)
2127 {
2128     FIXME("stub\n");
2129     return TRUE;
2130 }
2131
2132 /***********************************************************************
2133  *           SetVirtualResolution   (GDI32.@)
2134  *
2135  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
2136  */
2137 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
2138 {
2139     FIXME("(%p %08x %08x %08x %08x): stub!\n", hdc, dw2, dw3, dw4, dw5);
2140     return FALSE;
2141 }
2142
2143 /*******************************************************************
2144  *      GetMiterLimit [GDI32.@]
2145  *
2146  *
2147  */
2148 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2149 {
2150     BOOL bRet = FALSE;
2151     DC *dc;
2152
2153     TRACE("(%p,%p)\n", hdc, peLimit);
2154
2155     dc = get_dc_ptr( hdc );
2156     if (dc)
2157     {
2158         if (peLimit)
2159             *peLimit = dc->miterLimit;
2160
2161         release_dc_ptr( dc );
2162         bRet = TRUE;
2163     }
2164     return bRet;
2165 }
2166
2167 /*******************************************************************
2168  *      SetMiterLimit [GDI32.@]
2169  *
2170  *
2171  */
2172 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2173 {
2174     BOOL bRet = FALSE;
2175     DC *dc;
2176
2177     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2178
2179     dc = get_dc_ptr( hdc );
2180     if (dc)
2181     {
2182         if (peOldLimit)
2183             *peOldLimit = dc->miterLimit;
2184         dc->miterLimit = eNewLimit;
2185         release_dc_ptr( dc );
2186         bRet = TRUE;
2187     }
2188     return bRet;
2189 }
2190
2191 /*******************************************************************
2192  *      GdiIsMetaPrintDC [GDI32.@]
2193  */
2194 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2195 {
2196     FIXME("%p\n", hdc);
2197     return FALSE;
2198 }
2199
2200 /*******************************************************************
2201  *      GdiIsMetaFileDC [GDI32.@]
2202  */
2203 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2204 {
2205     TRACE("%p\n", hdc);
2206
2207     switch( GetObjectType( hdc ) )
2208     {
2209     case OBJ_METADC:
2210     case OBJ_ENHMETADC:
2211         return TRUE;
2212     }
2213     return FALSE;
2214 }
2215
2216 /*******************************************************************
2217  *      GdiIsPlayMetafileDC [GDI32.@]
2218  */
2219 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2220 {
2221     FIXME("%p\n", hdc);
2222     return FALSE;
2223 }