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->font_code_page      = CP_ACP;
 114     dc->ROPmode             = R2_COPYPEN;
 115     dc->polyFillMode        = ALTERNATE;
 116     dc->stretchBltMode      = BLACKONWHITE;
 117     dc->relAbsMode          = ABSOLUTE;
 118     dc->backgroundMode      = OPAQUE;
 119     dc->backgroundColor     = RGB( 255, 255, 255 );
 120     dc->dcBrushColor        = RGB( 255, 255, 255 );
 121     dc->dcPenColor          = RGB( 0, 0, 0 );
 122     dc->textColor           = RGB( 0, 0, 0 );
 123     dc->brushOrgX           = 0;
 124     dc->brushOrgY           = 0;
 125     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 126     dc->charExtra           = 0;
 127     dc->breakExtra          = 0;
 128     dc->breakRem            = 0;
 129     dc->MapMode             = MM_TEXT;
 130     dc->GraphicsMode        = GM_COMPATIBLE;
 131     dc->pAbortProc          = NULL;
 132     dc->CursPosX            = 0;
 133     dc->CursPosY            = 0;
 134     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 135     dc->xformWorld2Wnd.eM11 = 1.0f;
 136     dc->xformWorld2Wnd.eM12 = 0.0f;
 137     dc->xformWorld2Wnd.eM21 = 0.0f;
 138     dc->xformWorld2Wnd.eM22 = 1.0f;
 139     dc->xformWorld2Wnd.eDx  = 0.0f;
 140     dc->xformWorld2Wnd.eDy  = 0.0f;
 141     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 142     dc->xformVport2World    = dc->xformWorld2Wnd;
 143     dc->vport2WorldValid    = TRUE;
 144     dc->BoundsRect.left     = 0;
 145     dc->BoundsRect.top      = 0;
 146     dc->BoundsRect.right    = 0;
 147     dc->BoundsRect.bottom   = 0;
 148     dc->saved_visrgn        = NULL;
 149     PATH_InitGdiPath(&dc->path);
 150
 151     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 152     {
 153         HeapFree( GetProcessHeap(), 0, dc );
 154         dc = NULL;
 155     }
 156     return dc;
 157 }
 158
 159
 160
 161 /***********************************************************************
 162  *           free_dc_ptr
 163  */
 164 BOOL free_dc_ptr( DC *dc )
 165 {
 166     assert( dc->refcount == 1 );
 167     if (free_gdi_handle( dc->hSelf ) != dc) return FALSE;  /* shouldn't happen */
 168     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 169     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 170     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 171     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 172     PATH_DestroyGdiPath( &dc->path );
 173     return HeapFree( GetProcessHeap(), 0, dc );
 174 }
 175
 176
 177 /***********************************************************************
 178  *           get_dc_ptr
 179  *
 180  * Retrieve a DC pointer but release the GDI lock.
 181  */
 182 DC *get_dc_ptr( HDC hdc )
 183 {
 184     DC *dc = get_dc_obj( hdc );
 185     if (!dc) return NULL;
 186
 187     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 188     {
 189         dc->thread = GetCurrentThreadId();
 190     }
 191     else if (dc->thread != GetCurrentThreadId())
 192     {
 193         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 194         GDI_ReleaseObj( hdc );
 195         return NULL;
 196     }
 197     else InterlockedIncrement( &dc->refcount );
 198
 199     GDI_ReleaseObj( hdc );
 200     return dc;
 201 }
 202
 203
 204 /***********************************************************************
 205  *           release_dc_ptr
 206  */
 207 void release_dc_ptr( DC *dc )
 208 {
 209     LONG ref;
 210
 211     dc->thread = 0;
 212     ref = InterlockedDecrement( &dc->refcount );
 213     assert( ref >= 0 );
 214     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 215 }
 216
 217
 218 /***********************************************************************
 219  *           update_dc
 220  *
 221  * Make sure the DC vis region is up to date.
 222  * This function may call up to USER so the GDI lock should _not_
 223  * be held when calling it.
 224  */
 225 void update_dc( DC *dc )
 226 {
 227     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookThunk)
 228         dc->hookThunk( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 229 }
 230
 231
 232 /***********************************************************************
 233  *           DC_DeleteObject
 234  */
 235 static BOOL DC_DeleteObject( HGDIOBJ handle )
 236 {
 237     return DeleteDC( handle );
 238 }
 239
 240
 241 /***********************************************************************
 242  *           DC_InitDC
 243  *
 244  * Setup device-specific DC values for a newly created DC.
 245  */
 246 void DC_InitDC( DC* dc )
 247 {
 248     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 249     SetTextColor( dc->hSelf, dc->textColor );
 250     SetBkColor( dc->hSelf, dc->backgroundColor );
 251     SelectObject( dc->hSelf, dc->hPen );
 252     SelectObject( dc->hSelf, dc->hBrush );
 253     SelectObject( dc->hSelf, dc->hFont );
 254     CLIPPING_UpdateGCRegion( dc );
 255     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 256 }
 257
 258
 259 /***********************************************************************
 260  *           DC_InvertXform
 261  *
 262  * Computes the inverse of the transformation xformSrc and stores it to
 263  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 264  * is singular.
 265  */
 266 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 267 {
 268     double determinant;
 269
 270     determinant = xformSrc->eM11*xformSrc->eM22 -
 271         xformSrc->eM12*xformSrc->eM21;
 272     if (determinant > -1e-12 && determinant < 1e-12)
 273         return FALSE;
 274
 275     xformDest->eM11 =  xformSrc->eM22 / determinant;
 276     xformDest->eM12 = -xformSrc->eM12 / determinant;
 277     xformDest->eM21 = -xformSrc->eM21 / determinant;
 278     xformDest->eM22 =  xformSrc->eM11 / determinant;
 279     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 280                        xformSrc->eDy * xformDest->eM21;
 281     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 282                        xformSrc->eDy * xformDest->eM22;
 283
 284     return TRUE;
 285 }
 286
 287 /* Construct a transformation to do the window-to-viewport conversion */
 288 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 289 {
 290     double scaleX, scaleY;
 291     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 292     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 293
 294     xform->eM11 = scaleX;
 295     xform->eM12 = 0.0;
 296     xform->eM21 = 0.0;
 297     xform->eM22 = scaleY;
 298     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 299     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 300 }
 301
 302 /***********************************************************************
 303  *           DC_UpdateXforms
 304  *
 305  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 306  * fields of the specified DC by creating a transformation that
 307  * represents the current mapping mode and combining it with the DC's
 308  * world transform. This function should be called whenever the
 309  * parameters associated with the mapping mode (window and viewport
 310  * extents and origins) or the world transform change.
 311  */
 312 void DC_UpdateXforms( DC *dc )
 313 {
 314     XFORM xformWnd2Vport, oldworld2vport;
 315
 316     construct_window_to_viewport(dc, &xformWnd2Vport);
 317
 318     oldworld2vport = dc->xformWorld2Vport;
 319     /* Combine with the world transformation */
 320     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 321         &xformWnd2Vport );
 322
 323     /* Create inverse of world-to-viewport transformation */
 324     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 325         &dc->xformVport2World );
 326
 327     /* Reselect the font and pen back into the dc so that the size
 328        gets updated. */
 329     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 330         !GdiIsMetaFileDC(dc->hSelf))
 331     {
 332         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 333         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 334     }
 335 }
 336
 337
 338 /***********************************************************************
 339  *           save_dc_state
 340  */
 341 INT save_dc_state( HDC hdc )
 342 {
 343     DC * newdc, * dc;
 344     INT ret;
 345
 346     if (!(dc = get_dc_ptr( hdc ))) return 0;
 347     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc ))))
 348     {
 349       release_dc_ptr( dc );
 350       return 0;
 351     }
 352
 353     newdc->flags            = dc->flags | DC_SAVED;
 354     newdc->layout           = dc->layout;
 355     newdc->hPen             = dc->hPen;
 356     newdc->hBrush           = dc->hBrush;
 357     newdc->hFont            = dc->hFont;
 358     newdc->hBitmap          = dc->hBitmap;
 359     newdc->hDevice          = dc->hDevice;
 360     newdc->hPalette         = dc->hPalette;
 361     newdc->ROPmode          = dc->ROPmode;
 362     newdc->polyFillMode     = dc->polyFillMode;
 363     newdc->stretchBltMode   = dc->stretchBltMode;
 364     newdc->relAbsMode       = dc->relAbsMode;
 365     newdc->backgroundMode   = dc->backgroundMode;
 366     newdc->backgroundColor  = dc->backgroundColor;
 367     newdc->textColor        = dc->textColor;
 368     newdc->dcBrushColor     = dc->dcBrushColor;
 369     newdc->dcPenColor       = dc->dcPenColor;
 370     newdc->brushOrgX        = dc->brushOrgX;
 371     newdc->brushOrgY        = dc->brushOrgY;
 372     newdc->textAlign        = dc->textAlign;
 373     newdc->charExtra        = dc->charExtra;
 374     newdc->breakExtra       = dc->breakExtra;
 375     newdc->breakRem         = dc->breakRem;
 376     newdc->MapMode          = dc->MapMode;
 377     newdc->GraphicsMode     = dc->GraphicsMode;
 378     newdc->CursPosX         = dc->CursPosX;
 379     newdc->CursPosY         = dc->CursPosY;
 380     newdc->ArcDirection     = dc->ArcDirection;
 381     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 382     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 383     newdc->xformVport2World = dc->xformVport2World;
 384     newdc->vport2WorldValid = dc->vport2WorldValid;
 385     newdc->wndOrgX          = dc->wndOrgX;
 386     newdc->wndOrgY          = dc->wndOrgY;
 387     newdc->wndExtX          = dc->wndExtX;
 388     newdc->wndExtY          = dc->wndExtY;
 389     newdc->vportOrgX        = dc->vportOrgX;
 390     newdc->vportOrgY        = dc->vportOrgY;
 391     newdc->vportExtX        = dc->vportExtX;
 392     newdc->vportExtY        = dc->vportExtY;
 393     newdc->virtual_res      = dc->virtual_res;
 394     newdc->virtual_size     = dc->virtual_size;
 395     newdc->BoundsRect       = dc->BoundsRect;
 396     newdc->gdiFont          = dc->gdiFont;
 397
 398     newdc->thread    = GetCurrentThreadId();
 399     newdc->refcount  = 1;
 400     newdc->saveLevel = 0;
 401     newdc->saved_dc  = 0;
 402
 403     PATH_InitGdiPath( &newdc->path );
 404
 405     newdc->pAbortProc = NULL;
 406     newdc->hookThunk  = NULL;
 407     newdc->hookProc   = 0;
 408     newdc->saved_visrgn = NULL;
 409
 410     if (!(newdc->hSelf = alloc_gdi_handle( &newdc->header, dc->header.type, &dc_funcs )))
 411     {
 412         HeapFree( GetProcessHeap(), 0, newdc );
 413         release_dc_ptr( dc );
 414         return 0;
 415     }
 416
 417     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 418
 419     newdc->hVisRgn      = 0;
 420     newdc->hClipRgn     = 0;
 421     newdc->hMetaRgn     = 0;
 422     newdc->hMetaClipRgn = 0;
 423     if (dc->hClipRgn)
 424     {
 425         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 426         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 427     }
 428     if (dc->hMetaRgn)
 429     {
 430         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 431         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 432     }
 433     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 434
 435     if (!PATH_AssignGdiPath( &newdc->path, &dc->path ))
 436     {
 437         release_dc_ptr( dc );
 438         free_dc_ptr( newdc );
 439         return 0;
 440     }
 441
 442     newdc->saved_dc = dc->saved_dc;
 443     dc->saved_dc = newdc->hSelf;
 444     ret = ++dc->saveLevel;
 445     release_dc_ptr( newdc );
 446     release_dc_ptr( dc );
 447     return ret;
 448 }
 449
 450
 451 /***********************************************************************
 452  *           restore_dc_state
 453  */
 454 BOOL restore_dc_state( HDC hdc, INT level )
 455 {
 456     HDC hdcs, first_dcs;
 457     DC *dc, *dcs;
 458     INT save_level;
 459
 460     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 461
 462     /* find the state level to restore */
 463
 464     if (abs(level) > dc->saveLevel || level == 0)
 465     {
 466         release_dc_ptr( dc );
 467         return FALSE;
 468     }
 469     if (level < 0) level = dc->saveLevel + level + 1;
 470     first_dcs = dc->saved_dc;
 471     for (hdcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 472     {
 473         if (!(dcs = get_dc_ptr( hdcs )))
 474         {
 475             release_dc_ptr( dc );
 476             return FALSE;
 477         }
 478         hdcs = dcs->saved_dc;
 479         release_dc_ptr( dcs );
 480     }
 481
 482     /* restore the state */
 483
 484     if (!(dcs = get_dc_ptr( hdcs )))
 485     {
 486         release_dc_ptr( dc );
 487         return FALSE;
 488     }
 489     if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 490     {
 491         release_dc_ptr( dcs );
 492         release_dc_ptr( dc );
 493         return FALSE;
 494     }
 495
 496     dc->flags            = dcs->flags & ~DC_SAVED;
 497     dc->layout           = dcs->layout;
 498     dc->hDevice          = dcs->hDevice;
 499     dc->ROPmode          = dcs->ROPmode;
 500     dc->polyFillMode     = dcs->polyFillMode;
 501     dc->stretchBltMode   = dcs->stretchBltMode;
 502     dc->relAbsMode       = dcs->relAbsMode;
 503     dc->backgroundMode   = dcs->backgroundMode;
 504     dc->backgroundColor  = dcs->backgroundColor;
 505     dc->textColor        = dcs->textColor;
 506     dc->dcBrushColor     = dcs->dcBrushColor;
 507     dc->dcPenColor       = dcs->dcPenColor;
 508     dc->brushOrgX        = dcs->brushOrgX;
 509     dc->brushOrgY        = dcs->brushOrgY;
 510     dc->textAlign        = dcs->textAlign;
 511     dc->charExtra        = dcs->charExtra;
 512     dc->breakExtra       = dcs->breakExtra;
 513     dc->breakRem         = dcs->breakRem;
 514     dc->MapMode          = dcs->MapMode;
 515     dc->GraphicsMode     = dcs->GraphicsMode;
 516     dc->CursPosX         = dcs->CursPosX;
 517     dc->CursPosY         = dcs->CursPosY;
 518     dc->ArcDirection     = dcs->ArcDirection;
 519     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 520     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 521     dc->xformVport2World = dcs->xformVport2World;
 522     dc->vport2WorldValid = dcs->vport2WorldValid;
 523     dc->BoundsRect       = dcs->BoundsRect;
 524
 525     dc->wndOrgX          = dcs->wndOrgX;
 526     dc->wndOrgY          = dcs->wndOrgY;
 527     dc->wndExtX          = dcs->wndExtX;
 528     dc->wndExtY          = dcs->wndExtY;
 529     dc->vportOrgX        = dcs->vportOrgX;
 530     dc->vportOrgY        = dcs->vportOrgY;
 531     dc->vportExtX        = dcs->vportExtX;
 532     dc->vportExtY        = dcs->vportExtY;
 533     dc->virtual_res      = dcs->virtual_res;
 534     dc->virtual_size     = dcs->virtual_size;
 535
 536     if (dcs->hClipRgn)
 537     {
 538         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 539         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 540     }
 541     else
 542     {
 543         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 544         dc->hClipRgn = 0;
 545     }
 546     if (dcs->hMetaRgn)
 547     {
 548         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 549         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 550     }
 551     else
 552     {
 553         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 554         dc->hMetaRgn = 0;
 555     }
 556     CLIPPING_UpdateGCRegion( dc );
 557
 558     SelectObject( hdc, dcs->hBitmap );
 559     SelectObject( hdc, dcs->hBrush );
 560     SelectObject( hdc, dcs->hFont );
 561     SelectObject( hdc, dcs->hPen );
 562     SetBkColor( hdc, dcs->backgroundColor);
 563     SetTextColor( hdc, dcs->textColor);
 564     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 565
 566     dc->saved_dc  = dcs->saved_dc;
 567     dcs->saved_dc = 0;
 568     dc->saveLevel = save_level - 1;
 569
 570     release_dc_ptr( dcs );
 571
 572     /* now destroy all the saved DCs */
 573
 574     while (first_dcs)
 575     {
 576         if (!(dcs = get_dc_ptr( first_dcs ))) break;
 577         hdcs = dcs->saved_dc;
 578         free_dc_ptr( dcs );
 579         first_dcs = hdcs;
 580     }
 581     release_dc_ptr( dc );
 582     return TRUE;
 583 }
 584
 585
 586 /***********************************************************************
 587  *           SaveDC    (GDI32.@)
 588  */
 589 INT WINAPI SaveDC( HDC hdc )
 590 {
 591     DC * dc;
 592     INT ret;
 593
 594     if (!(dc = get_dc_ptr( hdc ))) return 0;
 595
 596     if(dc->funcs->pSaveDC)
 597         ret = dc->funcs->pSaveDC( dc->physDev );
 598     else
 599         ret = save_dc_state( hdc );
 600
 601     release_dc_ptr( dc );
 602     return ret;
 603 }
 604
 605
 606 /***********************************************************************
 607  *           RestoreDC    (GDI32.@)
 608  */
 609 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 610 {
 611     DC *dc;
 612     BOOL success;
 613
 614     TRACE("%p %d\n", hdc, level );
 615     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 616     update_dc( dc );
 617
 618     if(dc->funcs->pRestoreDC)
 619         success = dc->funcs->pRestoreDC( dc->physDev, level );
 620     else
 621         success = restore_dc_state( hdc, level );
 622
 623     release_dc_ptr( dc );
 624     return success;
 625 }
 626
 627
 628 /***********************************************************************
 629  *           CreateDCW    (GDI32.@)
 630  */
 631 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 632                       const DEVMODEW *initData )
 633 {
 634     HDC hdc;
 635     DC * dc;
 636     const DC_FUNCTIONS *funcs;
 637     WCHAR buf[300];
 638
 639     GDI_CheckNotLock();
 640
 641     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 642     {
 643         if (!driver)
 644         {
 645             ERR( "no device found for %s\n", debugstr_w(device) );
 646             return 0;
 647         }
 648         strcpyW(buf, driver);
 649     }
 650
 651     if (!(funcs = DRIVER_load_driver( buf )))
 652     {
 653         ERR( "no driver found for %s\n", debugstr_w(buf) );
 654         return 0;
 655     }
 656     if (!(dc = alloc_dc_ptr( funcs, OBJ_DC ))) goto error;
 657     hdc = dc->hSelf;
 658
 659     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 660     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 661
 662     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 663           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 664
 665     if (dc->funcs->pCreateDC &&
 666         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 667     {
 668         WARN("creation aborted by device\n" );
 669         goto error;
 670     }
 671
 672     SetRectRgn( dc->hVisRgn, 0, 0,
 673                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 674
 675     DC_InitDC( dc );
 676     release_dc_ptr( dc );
 677     return hdc;
 678
 679 error:
 680     if (dc) free_dc_ptr( dc );
 681     DRIVER_release_driver( funcs );
 682     return 0;
 683 }
 684
 685
 686 /***********************************************************************
 687  *           CreateDCA    (GDI32.@)
 688  */
 689 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 690                       const DEVMODEA *initData )
 691 {
 692     UNICODE_STRING driverW, deviceW, outputW;
 693     DEVMODEW *initDataW;
 694     HDC ret;
 695
 696     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 697     else driverW.Buffer = NULL;
 698
 699     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 700     else deviceW.Buffer = NULL;
 701
 702     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 703     else outputW.Buffer = NULL;
 704
 705     initDataW = NULL;
 706     if (initData)
 707     {
 708         /* don't convert initData for DISPLAY driver, it's not used */
 709         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 710             initDataW = GdiConvertToDevmodeW(initData);
 711     }
 712
 713     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 714
 715     RtlFreeUnicodeString(&driverW);
 716     RtlFreeUnicodeString(&deviceW);
 717     RtlFreeUnicodeString(&outputW);
 718     HeapFree(GetProcessHeap(), 0, initDataW);
 719     return ret;
 720 }
 721
 722
 723 /***********************************************************************
 724  *           CreateICA    (GDI32.@)
 725  */
 726 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 727                           const DEVMODEA* initData )
 728 {
 729       /* Nothing special yet for ICs */
 730     return CreateDCA( driver, device, output, initData );
 731 }
 732
 733
 734 /***********************************************************************
 735  *           CreateICW    (GDI32.@)
 736  */
 737 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 738                           const DEVMODEW* initData )
 739 {
 740       /* Nothing special yet for ICs */
 741     return CreateDCW( driver, device, output, initData );
 742 }
 743
 744
 745 /***********************************************************************
 746  *           CreateCompatibleDC   (GDI32.@)
 747  */
 748 HDC WINAPI CreateCompatibleDC( HDC hdc )
 749 {
 750     DC *dc, *origDC;
 751     HDC ret;
 752     const DC_FUNCTIONS *funcs = NULL;
 753     PHYSDEV physDev = NULL;
 754
 755     GDI_CheckNotLock();
 756
 757     if ((origDC = get_dc_ptr( hdc )))
 758     {
 759         if (GetObjectType( hdc ) == OBJ_DC)
 760         {
 761             funcs = origDC->funcs;
 762             physDev = origDC->physDev;
 763         }
 764         release_dc_ptr( origDC );
 765         if (funcs) funcs = DRIVER_get_driver( funcs );
 766     }
 767     else if (hdc) return 0;
 768
 769     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 770
 771     if (!(dc = alloc_dc_ptr( funcs, OBJ_MEMDC ))) goto error;
 772
 773     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 774
 775     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 776     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 777
 778     /* Copy the driver-specific physical device info into
 779      * the new DC. The driver may use this read-only info
 780      * while creating the compatible DC below. */
 781     dc->physDev = physDev;
 782     ret = dc->hSelf;
 783
 784     if (dc->funcs->pCreateDC &&
 785         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 786     {
 787         WARN("creation aborted by device\n");
 788         goto error;
 789     }
 790
 791     DC_InitDC( dc );
 792     release_dc_ptr( dc );
 793     return ret;
 794
 795 error:
 796     if (dc) free_dc_ptr( dc );
 797     DRIVER_release_driver( funcs );
 798     return 0;
 799 }
 800
 801
 802 /***********************************************************************
 803  *           DeleteDC    (GDI32.@)
 804  */
 805 BOOL WINAPI DeleteDC( HDC hdc )
 806 {
 807     const DC_FUNCTIONS *funcs = NULL;
 808     DC * dc;
 809
 810     TRACE("%p\n", hdc );
 811
 812     GDI_CheckNotLock();
 813
 814     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 815     if (dc->refcount != 1)
 816     {
 817         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 818         release_dc_ptr( dc );
 819         return FALSE;
 820     }
 821
 822     /* Call hook procedure to check whether is it OK to delete this DC */
 823     if (dc->hookThunk && !dc->hookThunk( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 824     {
 825         release_dc_ptr( dc );
 826         return FALSE;
 827     }
 828
 829     while (dc->saveLevel)
 830     {
 831         DC * dcs;
 832         HDC hdcs = dc->saved_dc;
 833         if (!(dcs = get_dc_ptr( hdcs ))) break;
 834         dc->saved_dc = dcs->saved_dc;
 835         dc->saveLevel--;
 836         free_dc_ptr( dcs );
 837     }
 838
 839     if (!(dc->flags & DC_SAVED))
 840     {
 841         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 842         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 843         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 844         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 845         funcs = dc->funcs;
 846         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 847         dc->physDev = NULL;
 848     }
 849
 850     while (dc->saved_visrgn)
 851     {
 852         struct saved_visrgn *next = dc->saved_visrgn->next;
 853         DeleteObject( dc->saved_visrgn->hrgn );
 854         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 855         dc->saved_visrgn = next;
 856     }
 857
 858     free_dc_ptr( dc );
 859     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 860     return TRUE;
 861 }
 862
 863
 864 /***********************************************************************
 865  *           ResetDCW    (GDI32.@)
 866  */
 867 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 868 {
 869     DC *dc;
 870     HDC ret = hdc;
 871
 872     if ((dc = get_dc_ptr( hdc )))
 873     {
 874         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 875         release_dc_ptr( dc );
 876     }
 877     return ret;
 878 }
 879
 880
 881 /***********************************************************************
 882  *           ResetDCA    (GDI32.@)
 883  */
 884 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 885 {
 886     DEVMODEW *devmodeW;
 887     HDC ret;
 888
 889     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 890     else devmodeW = NULL;
 891
 892     ret = ResetDCW(hdc, devmodeW);
 893
 894     HeapFree(GetProcessHeap(), 0, devmodeW);
 895     return ret;
 896 }
 897
 898
 899 /***********************************************************************
 900  *           GetDeviceCaps    (GDI32.@)
 901  */
 902 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 903 {
 904     DC *dc;
 905     INT ret = 0;
 906
 907     if ((dc = get_dc_ptr( hdc )))
 908     {
 909         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 910         else switch(cap)  /* return meaningful values for some entries */
 911         {
 912         case HORZRES:     ret = 640; break;
 913         case VERTRES:     ret = 480; break;
 914         case BITSPIXEL:   ret = 1; break;
 915         case PLANES:      ret = 1; break;
 916         case NUMCOLORS:   ret = 2; break;
 917         case ASPECTX:     ret = 36; break;
 918         case ASPECTY:     ret = 36; break;
 919         case ASPECTXY:    ret = 51; break;
 920         case LOGPIXELSX:  ret = 72; break;
 921         case LOGPIXELSY:  ret = 72; break;
 922         case SIZEPALETTE: ret = 2; break;
 923         }
 924         release_dc_ptr( dc );
 925     }
 926     return ret;
 927 }
 928
 929
 930 /***********************************************************************
 931  *              GetBkColor (GDI32.@)
 932  */
 933 COLORREF WINAPI GetBkColor( HDC hdc )
 934 {
 935     COLORREF ret = 0;
 936     DC * dc = get_dc_ptr( hdc );
 937     if (dc)
 938     {
 939         ret = dc->backgroundColor;
 940         release_dc_ptr( dc );
 941     }
 942     return ret;
 943 }
 944
 945
 946 /***********************************************************************
 947  *           SetBkColor    (GDI32.@)
 948  */
 949 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 950 {
 951     COLORREF oldColor;
 952     DC * dc = get_dc_ptr( hdc );
 953
 954     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 955
 956     if (!dc) return CLR_INVALID;
 957     oldColor = dc->backgroundColor;
 958     if (dc->funcs->pSetBkColor)
 959     {
 960         color = dc->funcs->pSetBkColor(dc->physDev, color);
 961         if (color == CLR_INVALID)  /* don't change it */
 962         {
 963             color = oldColor;
 964             oldColor = CLR_INVALID;
 965         }
 966     }
 967     dc->backgroundColor = color;
 968     release_dc_ptr( dc );
 969     return oldColor;
 970 }
 971
 972
 973 /***********************************************************************
 974  *              GetTextColor (GDI32.@)
 975  */
 976 COLORREF WINAPI GetTextColor( HDC hdc )
 977 {
 978     COLORREF ret = 0;
 979     DC * dc = get_dc_ptr( hdc );
 980     if (dc)
 981     {
 982         ret = dc->textColor;
 983         release_dc_ptr( dc );
 984     }
 985     return ret;
 986 }
 987
 988
 989 /***********************************************************************
 990  *           SetTextColor    (GDI32.@)
 991  */
 992 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 993 {
 994     COLORREF oldColor;
 995     DC * dc = get_dc_ptr( hdc );
 996
 997     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 998
 999     if (!dc) return CLR_INVALID;
1000     oldColor = dc->textColor;
1001     if (dc->funcs->pSetTextColor)
1002     {
1003         color = dc->funcs->pSetTextColor(dc->physDev, color);
1004         if (color == CLR_INVALID)  /* don't change it */
1005         {
1006             color = oldColor;
1007             oldColor = CLR_INVALID;
1008         }
1009     }
1010     dc->textColor = color;
1011     release_dc_ptr( dc );
1012     return oldColor;
1013 }
1014
1015
1016 /***********************************************************************
1017  *              GetTextAlign (GDI32.@)
1018  */
1019 UINT WINAPI GetTextAlign( HDC hdc )
1020 {
1021     UINT ret = 0;
1022     DC * dc = get_dc_ptr( hdc );
1023     if (dc)
1024     {
1025         ret = dc->textAlign;
1026         release_dc_ptr( dc );
1027     }
1028     return ret;
1029 }
1030
1031
1032 /***********************************************************************
1033  *           SetTextAlign    (GDI32.@)
1034  */
1035 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1036 {
1037     UINT ret;
1038     DC *dc = get_dc_ptr( hdc );
1039
1040     TRACE("hdc=%p align=%d\n", hdc, align);
1041
1042     if (!dc) return 0x0;
1043     ret = dc->textAlign;
1044     if (dc->funcs->pSetTextAlign)
1045         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1046             ret = GDI_ERROR;
1047     if (ret != GDI_ERROR)
1048         dc->textAlign = align;
1049     release_dc_ptr( dc );
1050     return ret;
1051 }
1052
1053 /***********************************************************************
1054  *           GetDCOrgEx  (GDI32.@)
1055  */
1056 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1057 {
1058     DC * dc;
1059
1060     if (!lpp) return FALSE;
1061     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1062
1063     lpp->x = lpp->y = 0;
1064     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1065     release_dc_ptr( dc );
1066     return TRUE;
1067 }
1068
1069
1070 /***********************************************************************
1071  *              GetGraphicsMode (GDI32.@)
1072  */
1073 INT WINAPI GetGraphicsMode( HDC hdc )
1074 {
1075     INT ret = 0;
1076     DC * dc = get_dc_ptr( hdc );
1077     if (dc)
1078     {
1079         ret = dc->GraphicsMode;
1080         release_dc_ptr( dc );
1081     }
1082     return ret;
1083 }
1084
1085
1086 /***********************************************************************
1087  *           SetGraphicsMode    (GDI32.@)
1088  */
1089 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1090 {
1091     INT ret = 0;
1092     DC *dc = get_dc_ptr( hdc );
1093
1094     /* One would think that setting the graphics mode to GM_COMPATIBLE
1095      * would also reset the world transformation matrix to the unity
1096      * matrix. However, in Windows, this is not the case. This doesn't
1097      * make a lot of sense to me, but that's the way it is.
1098      */
1099     if (!dc) return 0;
1100     if ((mode > 0) && (mode <= GM_LAST))
1101     {
1102         ret = dc->GraphicsMode;
1103         dc->GraphicsMode = mode;
1104     }
1105     release_dc_ptr( dc );
1106     return ret;
1107 }
1108
1109
1110 /***********************************************************************
1111  *              GetArcDirection (GDI32.@)
1112  */
1113 INT WINAPI GetArcDirection( HDC hdc )
1114 {
1115     INT ret = 0;
1116     DC * dc = get_dc_ptr( hdc );
1117     if (dc)
1118     {
1119         ret = dc->ArcDirection;
1120         release_dc_ptr( dc );
1121     }
1122     return ret;
1123 }
1124
1125
1126 /***********************************************************************
1127  *           SetArcDirection    (GDI32.@)
1128  */
1129 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1130 {
1131     DC * dc;
1132     INT nOldDirection = 0;
1133
1134     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1135     {
1136         SetLastError(ERROR_INVALID_PARAMETER);
1137         return 0;
1138     }
1139
1140     if ((dc = get_dc_ptr( hdc )))
1141     {
1142         if (dc->funcs->pSetArcDirection)
1143         {
1144             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1145         }
1146         nOldDirection = dc->ArcDirection;
1147         dc->ArcDirection = nDirection;
1148         release_dc_ptr( dc );
1149     }
1150     return nOldDirection;
1151 }
1152
1153
1154 /***********************************************************************
1155  *           GetWorldTransform    (GDI32.@)
1156  */
1157 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1158 {
1159     DC * dc;
1160     if (!xform) return FALSE;
1161     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1162     *xform = dc->xformWorld2Wnd;
1163     release_dc_ptr( dc );
1164     return TRUE;
1165 }
1166
1167
1168 /***********************************************************************
1169  *           GetTransform    (GDI32.@)
1170  *
1171  * Undocumented
1172  *
1173  * Returns one of the co-ordinate space transforms
1174  *
1175  * PARAMS
1176  *    hdc   [I] Device context.
1177  *    which [I] Which xform to return:
1178  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1179  *                  0x304 Page -> Device transform (the mapping mode transform).
1180  *                  0x204 World -> Device transform (the combination of the above two).
1181  *                  0x402 Device -> World transform (the inversion of the above).
1182  *    xform [O] The xform.
1183  *
1184  */
1185 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1186 {
1187     BOOL ret = TRUE;
1188     DC *dc = get_dc_ptr( hdc );
1189     if (!dc) return FALSE;
1190
1191     switch(which)
1192     {
1193     case 0x203:
1194         *xform = dc->xformWorld2Wnd;
1195         break;
1196
1197     case 0x304:
1198         construct_window_to_viewport(dc, xform);
1199         break;
1200
1201     case 0x204:
1202         *xform = dc->xformWorld2Vport;
1203         break;
1204
1205     case 0x402:
1206         *xform = dc->xformVport2World;
1207         break;
1208
1209     default:
1210         FIXME("Unknown code %x\n", which);
1211         ret = FALSE;
1212     }
1213
1214     release_dc_ptr( dc );
1215     return ret;
1216 }
1217
1218
1219 /***********************************************************************
1220  *           SetWorldTransform    (GDI32.@)
1221  */
1222 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1223 {
1224     BOOL ret = FALSE;
1225     DC *dc;
1226
1227     if (!xform) return FALSE;
1228
1229     dc = get_dc_ptr( hdc );
1230     if (!dc) return FALSE;
1231
1232     /* Check that graphics mode is GM_ADVANCED */
1233     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1234
1235     TRACE("eM11 %f eM12 %f eM21 %f eM22 %f eDx %f eDy %f\n",
1236         xform->eM11, xform->eM12, xform->eM21, xform->eM22, xform->eDx, xform->eDy);
1237
1238     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
1239     if (xform->eM11 * xform->eM22 == xform->eM12 * xform->eM21) goto done;
1240
1241     if (dc->funcs->pSetWorldTransform)
1242     {
1243         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1244         if (!ret) goto done;
1245     }
1246
1247     dc->xformWorld2Wnd = *xform;
1248     DC_UpdateXforms( dc );
1249     ret = TRUE;
1250  done:
1251     release_dc_ptr( dc );
1252     return ret;
1253 }
1254
1255
1256 /****************************************************************************
1257  * ModifyWorldTransform [GDI32.@]
1258  * Modifies the world transformation for a device context.
1259  *
1260  * PARAMS
1261  *    hdc   [I] Handle to device context
1262  *    xform [I] XFORM structure that will be used to modify the world
1263  *              transformation
1264  *    iMode [I] Specifies in what way to modify the world transformation
1265  *              Possible values:
1266  *              MWT_IDENTITY
1267  *                 Resets the world transformation to the identity matrix.
1268  *                 The parameter xform is ignored.
1269  *              MWT_LEFTMULTIPLY
1270  *                 Multiplies xform into the world transformation matrix from
1271  *                 the left.
1272  *              MWT_RIGHTMULTIPLY
1273  *                 Multiplies xform into the world transformation matrix from
1274  *                 the right.
1275  *
1276  * RETURNS
1277  *  Success: TRUE.
1278  *  Failure: FALSE. Use GetLastError() to determine the cause.
1279  */
1280 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1281     DWORD iMode )
1282 {
1283     BOOL ret = FALSE;
1284     DC *dc = get_dc_ptr( hdc );
1285
1286     /* Check for illegal parameters */
1287     if (!dc) return FALSE;
1288     if (!xform && iMode != MWT_IDENTITY) goto done;
1289
1290     /* Check that graphics mode is GM_ADVANCED */
1291     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1292
1293     if (dc->funcs->pModifyWorldTransform)
1294     {
1295         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1296         if (!ret) goto done;
1297     }
1298
1299     switch (iMode)
1300     {
1301         case MWT_IDENTITY:
1302             dc->xformWorld2Wnd.eM11 = 1.0f;
1303             dc->xformWorld2Wnd.eM12 = 0.0f;
1304             dc->xformWorld2Wnd.eM21 = 0.0f;
1305             dc->xformWorld2Wnd.eM22 = 1.0f;
1306             dc->xformWorld2Wnd.eDx  = 0.0f;
1307             dc->xformWorld2Wnd.eDy  = 0.0f;
1308             break;
1309         case MWT_LEFTMULTIPLY:
1310             CombineTransform( &dc->xformWorld2Wnd, xform,
1311                 &dc->xformWorld2Wnd );
1312             break;
1313         case MWT_RIGHTMULTIPLY:
1314             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1315                 xform );
1316             break;
1317         default:
1318             goto done;
1319     }
1320
1321     DC_UpdateXforms( dc );
1322     ret = TRUE;
1323  done:
1324     release_dc_ptr( dc );
1325     return ret;
1326 }
1327
1328
1329 /****************************************************************************
1330  * CombineTransform [GDI32.@]
1331  * Combines two transformation matrices.
1332  *
1333  * PARAMS
1334  *    xformResult [O] Stores the result of combining the two matrices
1335  *    xform1      [I] Specifies the first matrix to apply
1336  *    xform2      [I] Specifies the second matrix to apply
1337  *
1338  * REMARKS
1339  *    The same matrix can be passed in for more than one of the parameters.
1340  *
1341  * RETURNS
1342  *  Success: TRUE.
1343  *  Failure: FALSE. Use GetLastError() to determine the cause.
1344  */
1345 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1346     const XFORM *xform2 )
1347 {
1348     XFORM xformTemp;
1349
1350     /* Check for illegal parameters */
1351     if (!xformResult || !xform1 || !xform2)
1352         return FALSE;
1353
1354     /* Create the result in a temporary XFORM, since xformResult may be
1355      * equal to xform1 or xform2 */
1356     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1357                      xform1->eM12 * xform2->eM21;
1358     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1359                      xform1->eM12 * xform2->eM22;
1360     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1361                      xform1->eM22 * xform2->eM21;
1362     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1363                      xform1->eM22 * xform2->eM22;
1364     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1365                      xform1->eDy  * xform2->eM21 +
1366                      xform2->eDx;
1367     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1368                      xform1->eDy  * xform2->eM22 +
1369                      xform2->eDy;
1370
1371     /* Copy the result to xformResult */
1372     *xformResult = xformTemp;
1373
1374     return TRUE;
1375 }
1376
1377
1378 /***********************************************************************
1379  *           SetDCHook   (GDI32.@)
1380  *
1381  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1382  */
1383 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1384 {
1385     DC *dc = get_dc_ptr( hdc );
1386
1387     if (!dc) return FALSE;
1388
1389     if (!(dc->flags & DC_SAVED))
1390     {
1391         dc->dwHookData = dwHookData;
1392         dc->hookThunk = hookProc;
1393     }
1394     release_dc_ptr( dc );
1395     return TRUE;
1396 }
1397
1398
1399 /***********************************************************************
1400  *           GetDCHook   (GDI32.@)
1401  *
1402  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1403  */
1404 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1405 {
1406     DC *dc = get_dc_ptr( hdc );
1407     DWORD_PTR ret;
1408
1409     if (!dc) return 0;
1410     if (proc) *proc = dc->hookThunk;
1411     ret = dc->dwHookData;
1412     release_dc_ptr( dc );
1413     return ret;
1414 }
1415
1416
1417 /* relay function to call the 16-bit DC hook proc */
1418 static BOOL WINAPI call_dc_hook16( HDC hdc, WORD code, DWORD_PTR data, LPARAM lParam )
1419 {
1420     WORD args[6];
1421     DWORD ret = 0;
1422     DC *dc = get_dc_ptr( hdc );
1423
1424     if (!dc) return FALSE;
1425     if (dc->hookProc)
1426     {
1427         args[5] = HDC_16(hdc);
1428         args[4] = code;
1429         args[3] = HIWORD(data);
1430         args[2] = LOWORD(data);
1431         args[1] = HIWORD(lParam);
1432         args[0] = LOWORD(lParam);
1433         WOWCallback16Ex( (DWORD)dc->hookProc, WCB16_PASCAL, sizeof(args), args, &ret );
1434     }
1435     release_dc_ptr( dc );
1436     return LOWORD(ret);
1437 }
1438
1439 /***********************************************************************
1440  *           SetDCHook   (GDI.190)
1441  */
1442 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1443 {
1444     DC *dc = get_dc_ptr( HDC_32(hdc16) );
1445
1446     if (!dc) return FALSE;
1447     if (!(dc->flags & DC_SAVED))
1448     {
1449         dc->dwHookData = dwHookData;
1450         dc->hookThunk = call_dc_hook16;
1451         dc->hookProc = hookProc;
1452     }
1453     release_dc_ptr( dc );
1454     return TRUE;
1455 }
1456
1457
1458 /***********************************************************************
1459  *           GetDCHook   (GDI.191)
1460  */
1461 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1462 {
1463     HDC hdc = HDC_32( hdc16 );
1464     DC *dc = get_dc_ptr( hdc );
1465     DWORD ret;
1466
1467     if (!dc) return 0;
1468     *phookProc = dc->hookProc;
1469     ret = dc->dwHookData;
1470     release_dc_ptr( dc );
1471     return ret;
1472 }
1473
1474
1475 /***********************************************************************
1476  *           SetHookFlags   (GDI32.@)
1477  *
1478  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1479  */
1480 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1481 {
1482     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1483     LONG ret = 0;
1484
1485     if (!dc) return 0;
1486
1487     /* "Undocumented Windows" info is slightly confusing. */
1488
1489     TRACE("hDC %p, flags %04x\n",hdc,flags);
1490
1491     if (flags & DCHF_INVALIDATEVISRGN)
1492         ret = InterlockedExchange( &dc->dirty, 1 );
1493     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1494         ret = InterlockedExchange( &dc->dirty, 0 );
1495
1496     GDI_ReleaseObj( dc );
1497     return ret;
1498 }
1499
1500 /***********************************************************************
1501  *           SetICMMode    (GDI32.@)
1502  */
1503 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1504 {
1505 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1506     if (iEnableICM == ICM_OFF) return ICM_OFF;
1507     if (iEnableICM == ICM_ON) return 0;
1508     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1509     return 0;
1510 }
1511
1512 /***********************************************************************
1513  *           GetDeviceGammaRamp    (GDI32.@)
1514  */
1515 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1516 {
1517     BOOL ret = FALSE;
1518     DC *dc = get_dc_ptr( hDC );
1519
1520     if( dc )
1521     {
1522         if (dc->funcs->pGetDeviceGammaRamp)
1523             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1524         release_dc_ptr( dc );
1525     }
1526     return ret;
1527 }
1528
1529 /***********************************************************************
1530  *           SetDeviceGammaRamp    (GDI32.@)
1531  */
1532 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1533 {
1534     BOOL ret = FALSE;
1535     DC *dc = get_dc_ptr( hDC );
1536
1537     if( dc )
1538     {
1539         if (dc->funcs->pSetDeviceGammaRamp)
1540             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1541         release_dc_ptr( dc );
1542     }
1543     return ret;
1544 }
1545
1546 /***********************************************************************
1547  *           GetColorSpace    (GDI32.@)
1548  */
1549 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1550 {
1551 /*FIXME    Need to to whatever GetColorSpace actually does */
1552     return 0;
1553 }
1554
1555 /***********************************************************************
1556  *           CreateColorSpaceA    (GDI32.@)
1557  */
1558 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1559 {
1560   FIXME( "stub\n" );
1561   return 0;
1562 }
1563
1564 /***********************************************************************
1565  *           CreateColorSpaceW    (GDI32.@)
1566  */
1567 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1568 {
1569   FIXME( "stub\n" );
1570   return 0;
1571 }
1572
1573 /***********************************************************************
1574  *           DeleteColorSpace     (GDI32.@)
1575  */
1576 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1577 {
1578   FIXME( "stub\n" );
1579
1580   return TRUE;
1581 }
1582
1583 /***********************************************************************
1584  *           SetColorSpace     (GDI32.@)
1585  */
1586 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1587 {
1588   FIXME( "stub\n" );
1589
1590   return hColorSpace;
1591 }
1592
1593 /***********************************************************************
1594  *           GetBoundsRect    (GDI32.@)
1595  */
1596 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1597 {
1598     UINT ret;
1599     DC *dc = get_dc_ptr( hdc );
1600
1601     if ( !dc ) return 0;
1602
1603     if (rect) *rect = dc->BoundsRect;
1604
1605     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1606
1607     if (flags & DCB_RESET)
1608     {
1609         dc->BoundsRect.left   = 0;
1610         dc->BoundsRect.top    = 0;
1611         dc->BoundsRect.right  = 0;
1612         dc->BoundsRect.bottom = 0;
1613         dc->flags &= ~DC_BOUNDS_SET;
1614     }
1615     release_dc_ptr( dc );
1616     return ret;
1617 }
1618
1619
1620 /***********************************************************************
1621  *           SetBoundsRect    (GDI32.@)
1622  */
1623 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1624 {
1625     UINT ret;
1626     DC *dc;
1627
1628     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1629     if (!(dc = get_dc_ptr( hdc ))) return 0;
1630
1631     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1632           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1633
1634     if (flags & DCB_RESET)
1635     {
1636         dc->BoundsRect.left   = 0;
1637         dc->BoundsRect.top    = 0;
1638         dc->BoundsRect.right  = 0;
1639         dc->BoundsRect.bottom = 0;
1640         dc->flags &= ~DC_BOUNDS_SET;
1641     }
1642
1643     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1644     {
1645         if (dc->flags & DC_BOUNDS_SET)
1646         {
1647             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1648             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1649             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1650             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1651         }
1652         else
1653         {
1654             dc->BoundsRect = *rect;
1655             dc->flags |= DC_BOUNDS_SET;
1656         }
1657     }
1658
1659     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1660     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1661
1662     release_dc_ptr( dc );
1663     return ret;
1664 }
1665
1666
1667 /***********************************************************************
1668  *              GetRelAbs               (GDI32.@)
1669  */
1670 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1671 {
1672     INT ret = 0;
1673     DC *dc = get_dc_ptr( hdc );
1674     if (dc)
1675     {
1676         ret = dc->relAbsMode;
1677         release_dc_ptr( dc );
1678     }
1679     return ret;
1680 }
1681
1682
1683
1684
1685 /***********************************************************************
1686  *              GetBkMode (GDI32.@)
1687  */
1688 INT WINAPI GetBkMode( HDC hdc )
1689 {
1690     INT ret = 0;
1691     DC * dc = get_dc_ptr( hdc );
1692     if (dc)
1693     {
1694         ret = dc->backgroundMode;
1695         release_dc_ptr( dc );
1696     }
1697     return ret;
1698 }
1699
1700
1701 /***********************************************************************
1702  *              SetBkMode (GDI32.@)
1703  */
1704 INT WINAPI SetBkMode( HDC hdc, INT mode )
1705 {
1706     INT ret;
1707     DC *dc;
1708     if ((mode <= 0) || (mode > BKMODE_LAST))
1709     {
1710         SetLastError(ERROR_INVALID_PARAMETER);
1711         return 0;
1712     }
1713     if (!(dc = get_dc_ptr( hdc ))) return 0;
1714
1715     ret = dc->backgroundMode;
1716     if (dc->funcs->pSetBkMode)
1717         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1718             ret = 0;
1719     if (ret)
1720         dc->backgroundMode = mode;
1721     release_dc_ptr( dc );
1722     return ret;
1723 }
1724
1725
1726 /***********************************************************************
1727  *              GetROP2 (GDI32.@)
1728  */
1729 INT WINAPI GetROP2( HDC hdc )
1730 {
1731     INT ret = 0;
1732     DC * dc = get_dc_ptr( hdc );
1733     if (dc)
1734     {
1735         ret = dc->ROPmode;
1736         release_dc_ptr( dc );
1737     }
1738     return ret;
1739 }
1740
1741
1742 /***********************************************************************
1743  *              SetROP2 (GDI32.@)
1744  */
1745 INT WINAPI SetROP2( HDC hdc, INT mode )
1746 {
1747     INT ret;
1748     DC *dc;
1749     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1750     {
1751         SetLastError(ERROR_INVALID_PARAMETER);
1752         return 0;
1753     }
1754     if (!(dc = get_dc_ptr( hdc ))) return 0;
1755     ret = dc->ROPmode;
1756     if (dc->funcs->pSetROP2)
1757         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1758             ret = 0;
1759     if (ret)
1760         dc->ROPmode = mode;
1761     release_dc_ptr( dc );
1762     return ret;
1763 }
1764
1765
1766 /***********************************************************************
1767  *              SetRelAbs (GDI32.@)
1768  */
1769 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1770 {
1771     INT ret;
1772     DC *dc;
1773     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1774     {
1775         SetLastError(ERROR_INVALID_PARAMETER);
1776         return 0;
1777     }
1778     if (!(dc = get_dc_ptr( hdc ))) return 0;
1779     if (dc->funcs->pSetRelAbs)
1780         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1781     else
1782     {
1783         ret = dc->relAbsMode;
1784         dc->relAbsMode = mode;
1785     }
1786     release_dc_ptr( dc );
1787     return ret;
1788 }
1789
1790
1791 /***********************************************************************
1792  *              GetPolyFillMode (GDI32.@)
1793  */
1794 INT WINAPI GetPolyFillMode( HDC hdc )
1795 {
1796     INT ret = 0;
1797     DC * dc = get_dc_ptr( hdc );
1798     if (dc)
1799     {
1800         ret = dc->polyFillMode;
1801         release_dc_ptr( dc );
1802     }
1803     return ret;
1804 }
1805
1806
1807 /***********************************************************************
1808  *              SetPolyFillMode (GDI32.@)
1809  */
1810 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1811 {
1812     INT ret;
1813     DC *dc;
1814     if ((mode <= 0) || (mode > POLYFILL_LAST))
1815     {
1816         SetLastError(ERROR_INVALID_PARAMETER);
1817         return 0;
1818     }
1819     if (!(dc = get_dc_ptr( hdc ))) return 0;
1820     ret = dc->polyFillMode;
1821     if (dc->funcs->pSetPolyFillMode)
1822         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1823             ret = 0;
1824     if (ret)
1825         dc->polyFillMode = mode;
1826     release_dc_ptr( dc );
1827     return ret;
1828 }
1829
1830
1831 /***********************************************************************
1832  *              GetStretchBltMode (GDI32.@)
1833  */
1834 INT WINAPI GetStretchBltMode( HDC hdc )
1835 {
1836     INT ret = 0;
1837     DC * dc = get_dc_ptr( hdc );
1838     if (dc)
1839     {
1840         ret = dc->stretchBltMode;
1841         release_dc_ptr( dc );
1842     }
1843     return ret;
1844 }
1845
1846
1847 /***********************************************************************
1848  *              SetStretchBltMode (GDI32.@)
1849  */
1850 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1851 {
1852     INT ret;
1853     DC *dc;
1854     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1855     {
1856         SetLastError(ERROR_INVALID_PARAMETER);
1857         return 0;
1858     }
1859     if (!(dc = get_dc_ptr( hdc ))) return 0;
1860     ret = dc->stretchBltMode;
1861     if (dc->funcs->pSetStretchBltMode)
1862         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1863             ret = 0;
1864     if (ret)
1865         dc->stretchBltMode = mode;
1866     release_dc_ptr( dc );
1867     return ret;
1868 }
1869
1870
1871 /***********************************************************************
1872  *              GetMapMode (GDI32.@)
1873  */
1874 INT WINAPI GetMapMode( HDC hdc )
1875 {
1876     INT ret = 0;
1877     DC * dc = get_dc_ptr( hdc );
1878     if (dc)
1879     {
1880         ret = dc->MapMode;
1881         release_dc_ptr( dc );
1882     }
1883     return ret;
1884 }
1885
1886
1887 /***********************************************************************
1888  *              GetBrushOrgEx (GDI32.@)
1889  */
1890 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1891 {
1892     DC * dc = get_dc_ptr( hdc );
1893     if (!dc) return FALSE;
1894     pt->x = dc->brushOrgX;
1895     pt->y = dc->brushOrgY;
1896     release_dc_ptr( dc );
1897     return TRUE;
1898 }
1899
1900
1901 /***********************************************************************
1902  *              GetCurrentPositionEx (GDI32.@)
1903  */
1904 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1905 {
1906     DC * dc = get_dc_ptr( hdc );
1907     if (!dc) return FALSE;
1908     pt->x = dc->CursPosX;
1909     pt->y = dc->CursPosY;
1910     release_dc_ptr( dc );
1911     return TRUE;
1912 }
1913
1914
1915 /***********************************************************************
1916  *              GetViewportExtEx (GDI32.@)
1917  */
1918 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1919 {
1920     DC * dc = get_dc_ptr( hdc );
1921     if (!dc) return FALSE;
1922     size->cx = dc->vportExtX;
1923     size->cy = dc->vportExtY;
1924     release_dc_ptr( dc );
1925     return TRUE;
1926 }
1927
1928
1929 /***********************************************************************
1930  *              GetViewportOrgEx (GDI32.@)
1931  */
1932 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1933 {
1934     DC * dc = get_dc_ptr( hdc );
1935     if (!dc) return FALSE;
1936     pt->x = dc->vportOrgX;
1937     pt->y = dc->vportOrgY;
1938     release_dc_ptr( dc );
1939     return TRUE;
1940 }
1941
1942
1943 /***********************************************************************
1944  *              GetWindowExtEx (GDI32.@)
1945  */
1946 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1947 {
1948     DC * dc = get_dc_ptr( hdc );
1949     if (!dc) return FALSE;
1950     size->cx = dc->wndExtX;
1951     size->cy = dc->wndExtY;
1952     release_dc_ptr( dc );
1953     return TRUE;
1954 }
1955
1956
1957 /***********************************************************************
1958  *              GetWindowOrgEx (GDI32.@)
1959  */
1960 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1961 {
1962     DC * dc = get_dc_ptr( hdc );
1963     if (!dc) return FALSE;
1964     pt->x = dc->wndOrgX;
1965     pt->y = dc->wndOrgY;
1966     release_dc_ptr( dc );
1967     return TRUE;
1968 }
1969
1970
1971 /***********************************************************************
1972  *           GetLayout    (GDI32.@)
1973  *
1974  * Gets left->right or right->left text layout flags of a dc.
1975  *
1976  */
1977 DWORD WINAPI GetLayout(HDC hdc)
1978 {
1979     DWORD layout = GDI_ERROR;
1980
1981     DC * dc = get_dc_ptr( hdc );
1982     if (dc)
1983     {
1984         layout = dc->layout;
1985         release_dc_ptr( dc );
1986     }
1987
1988     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1989
1990     return layout;
1991 }
1992
1993 /***********************************************************************
1994  *           SetLayout    (GDI32.@)
1995  *
1996  * Sets left->right or right->left text layout flags of a dc.
1997  *
1998  */
1999 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
2000 {
2001     DWORD oldlayout = GDI_ERROR;
2002
2003     DC * dc = get_dc_ptr( hdc );
2004     if (dc)
2005     {
2006         oldlayout = dc->layout;
2007         dc->layout = layout;
2008         release_dc_ptr( dc );
2009     }
2010
2011     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
2012
2013     return oldlayout;
2014 }
2015
2016 /***********************************************************************
2017  *           GetDCBrushColor    (GDI32.@)
2018  *
2019  * Retrieves the current brush color for the specified device
2020  * context (DC).
2021  *
2022  */
2023 COLORREF WINAPI GetDCBrushColor(HDC hdc)
2024 {
2025     DC *dc;
2026     COLORREF dcBrushColor = CLR_INVALID;
2027
2028     TRACE("hdc(%p)\n", hdc);
2029
2030     dc = get_dc_ptr( hdc );
2031     if (dc)
2032     {
2033         dcBrushColor = dc->dcBrushColor;
2034         release_dc_ptr( dc );
2035     }
2036
2037     return dcBrushColor;
2038 }
2039
2040 /***********************************************************************
2041  *           SetDCBrushColor    (GDI32.@)
2042  *
2043  * Sets the current device context (DC) brush color to the specified
2044  * color value. If the device cannot represent the specified color
2045  * value, the color is set to the nearest physical color.
2046  *
2047  */
2048 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2049 {
2050     DC *dc;
2051     COLORREF oldClr = CLR_INVALID;
2052
2053     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2054
2055     dc = get_dc_ptr( hdc );
2056     if (dc)
2057     {
2058         if (dc->funcs->pSetDCBrushColor)
2059             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2060         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2061         {
2062             /* If DC_BRUSH is selected, update driver pen color */
2063             HBRUSH hBrush = CreateSolidBrush( crColor );
2064             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2065             DeleteObject( hBrush );
2066         }
2067
2068         if (crColor != CLR_INVALID)
2069         {
2070             oldClr = dc->dcBrushColor;
2071             dc->dcBrushColor = crColor;
2072         }
2073
2074         release_dc_ptr( dc );
2075     }
2076
2077     return oldClr;
2078 }
2079
2080 /***********************************************************************
2081  *           GetDCPenColor    (GDI32.@)
2082  *
2083  * Retrieves the current pen color for the specified device
2084  * context (DC).
2085  *
2086  */
2087 COLORREF WINAPI GetDCPenColor(HDC hdc)
2088 {
2089     DC *dc;
2090     COLORREF dcPenColor = CLR_INVALID;
2091
2092     TRACE("hdc(%p)\n", hdc);
2093
2094     dc = get_dc_ptr( hdc );
2095     if (dc)
2096     {
2097         dcPenColor = dc->dcPenColor;
2098         release_dc_ptr( dc );
2099     }
2100
2101     return dcPenColor;
2102 }
2103
2104 /***********************************************************************
2105  *           SetDCPenColor    (GDI32.@)
2106  *
2107  * Sets the current device context (DC) pen color to the specified
2108  * color value. If the device cannot represent the specified color
2109  * value, the color is set to the nearest physical color.
2110  *
2111  */
2112 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2113 {
2114     DC *dc;
2115     COLORREF oldClr = CLR_INVALID;
2116
2117     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2118
2119     dc = get_dc_ptr( hdc );
2120     if (dc)
2121     {
2122         if (dc->funcs->pSetDCPenColor)
2123             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2124         else if (dc->hPen == GetStockObject( DC_PEN ))
2125         {
2126             /* If DC_PEN is selected, update the driver pen color */
2127             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2128             HPEN hPen = CreatePenIndirect( &logpen );
2129             dc->funcs->pSelectPen( dc->physDev, hPen );
2130             DeleteObject( hPen );
2131         }
2132
2133         if (crColor != CLR_INVALID)
2134         {
2135             oldClr = dc->dcPenColor;
2136             dc->dcPenColor = crColor;
2137         }
2138
2139         release_dc_ptr( dc );
2140     }
2141
2142     return oldClr;
2143 }
2144
2145 /***********************************************************************
2146  *           CancelDC    (GDI32.@)
2147  */
2148 BOOL WINAPI CancelDC(HDC hdc)
2149 {
2150     FIXME("stub\n");
2151     return TRUE;
2152 }
2153
2154 /*******************************************************************
2155  *      GetMiterLimit [GDI32.@]
2156  *
2157  *
2158  */
2159 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2160 {
2161     BOOL bRet = FALSE;
2162     DC *dc;
2163
2164     TRACE("(%p,%p)\n", hdc, peLimit);
2165
2166     dc = get_dc_ptr( hdc );
2167     if (dc)
2168     {
2169         if (peLimit)
2170             *peLimit = dc->miterLimit;
2171
2172         release_dc_ptr( dc );
2173         bRet = TRUE;
2174     }
2175     return bRet;
2176 }
2177
2178 /*******************************************************************
2179  *      SetMiterLimit [GDI32.@]
2180  *
2181  *
2182  */
2183 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2184 {
2185     BOOL bRet = FALSE;
2186     DC *dc;
2187
2188     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2189
2190     dc = get_dc_ptr( hdc );
2191     if (dc)
2192     {
2193         if (peOldLimit)
2194             *peOldLimit = dc->miterLimit;
2195         dc->miterLimit = eNewLimit;
2196         release_dc_ptr( dc );
2197         bRet = TRUE;
2198     }
2199     return bRet;
2200 }
2201
2202 /*******************************************************************
2203  *      GdiIsMetaPrintDC [GDI32.@]
2204  */
2205 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2206 {
2207     FIXME("%p\n", hdc);
2208     return FALSE;
2209 }
2210
2211 /*******************************************************************
2212  *      GdiIsMetaFileDC [GDI32.@]
2213  */
2214 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2215 {
2216     TRACE("%p\n", hdc);
2217
2218     switch( GetObjectType( hdc ) )
2219     {
2220     case OBJ_METADC:
2221     case OBJ_ENHMETADC:
2222         return TRUE;
2223     }
2224     return FALSE;
2225 }
2226
2227 /*******************************************************************
2228  *      GdiIsPlayMetafileDC [GDI32.@]
2229  */
2230 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2231 {
2232     FIXME("%p\n", hdc);
2233     return FALSE;
2234 }