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 "gdi_private.h"
  34 #include "wine/unicode.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  38
  39 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  40
  41 static BOOL DC_DeleteObject( HGDIOBJ handle );
  42
  43 static const struct gdi_obj_funcs dc_funcs =
  44 {
  45     NULL,             /* pSelectObject */
  46     NULL,             /* pGetObjectA */
  47     NULL,             /* pGetObjectW */
  48     NULL,             /* pUnrealizeObject */
  49     DC_DeleteObject   /* pDeleteObject */
  50 };
  51
  52
  53 static inline DC *get_dc_obj( HDC hdc )
  54 {
  55     DC *dc = GDI_GetObjPtr( hdc, 0 );
  56     if (!dc) return NULL;
  57
  58     switch (GetObjectType( hdc ))
  59     {
  60     case OBJ_DC:
  61     case OBJ_MEMDC:
  62     case OBJ_METADC:
  63     case OBJ_ENHMETADC:
  64         return dc;
  65     default:
  66         GDI_ReleaseObj( hdc );
  67         SetLastError( ERROR_INVALID_HANDLE );
  68         return NULL;
  69     }
  70 }
  71
  72
  73 /***********************************************************************
  74  *           set_initial_dc_state
  75  */
  76 static void set_initial_dc_state( DC *dc )
  77 {
  78     dc->wndOrgX             = 0;
  79     dc->wndOrgY             = 0;
  80     dc->wndExtX             = 1;
  81     dc->wndExtY             = 1;
  82     dc->vportOrgX           = 0;
  83     dc->vportOrgY           = 0;
  84     dc->vportExtX           = 1;
  85     dc->vportExtY           = 1;
  86     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  87     dc->layout              = 0;
  88     dc->font_code_page      = CP_ACP;
  89     dc->ROPmode             = R2_COPYPEN;
  90     dc->polyFillMode        = ALTERNATE;
  91     dc->stretchBltMode      = BLACKONWHITE;
  92     dc->relAbsMode          = ABSOLUTE;
  93     dc->backgroundMode      = OPAQUE;
  94     dc->backgroundColor     = RGB( 255, 255, 255 );
  95     dc->dcBrushColor        = RGB( 255, 255, 255 );
  96     dc->dcPenColor          = RGB( 0, 0, 0 );
  97     dc->textColor           = RGB( 0, 0, 0 );
  98     dc->brushOrgX           = 0;
  99     dc->brushOrgY           = 0;
 100     dc->mapperFlags         = 0;
 101     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 102     dc->charExtra           = 0;
 103     dc->breakExtra          = 0;
 104     dc->breakRem            = 0;
 105     dc->MapMode             = MM_TEXT;
 106     dc->GraphicsMode        = GM_COMPATIBLE;
 107     dc->CursPosX            = 0;
 108     dc->CursPosY            = 0;
 109     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 110     dc->xformWorld2Wnd.eM11 = 1.0f;
 111     dc->xformWorld2Wnd.eM12 = 0.0f;
 112     dc->xformWorld2Wnd.eM21 = 0.0f;
 113     dc->xformWorld2Wnd.eM22 = 1.0f;
 114     dc->xformWorld2Wnd.eDx  = 0.0f;
 115     dc->xformWorld2Wnd.eDy  = 0.0f;
 116     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 117     dc->xformVport2World    = dc->xformWorld2Wnd;
 118     dc->vport2WorldValid    = TRUE;
 119
 120     reset_bounds( &dc->bounds );
 121 }
 122
 123 /***********************************************************************
 124  *           alloc_dc_ptr
 125  */
 126 DC *alloc_dc_ptr( WORD magic )
 127 {
 128     DC *dc;
 129
 130     if (!(dc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*dc) ))) return NULL;
 131
 132     dc->nulldrv.funcs       = &null_driver;
 133     dc->physDev             = &dc->nulldrv;
 134     dc->module              = gdi32_module;
 135     dc->thread              = GetCurrentThreadId();
 136     dc->refcount            = 1;
 137     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 138     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 139     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 140     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 141
 142     set_initial_dc_state( dc );
 143
 144     if (!(dc->hSelf = alloc_gdi_handle( dc, magic, &dc_funcs )))
 145     {
 146         HeapFree( GetProcessHeap(), 0, dc );
 147         return NULL;
 148     }
 149     dc->nulldrv.hdc = dc->hSelf;
 150
 151     if (font_driver && !font_driver->pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 152     {
 153         free_dc_ptr( dc );
 154         return NULL;
 155     }
 156     return dc;
 157 }
 158
 159
 160
 161 /***********************************************************************
 162  *           free_dc_state
 163  */
 164 static void free_dc_state( DC *dc )
 165 {
 166     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 167     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 168     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 169     if (dc->region) DeleteObject( dc->region );
 170     if (dc->path) free_gdi_path( dc->path );
 171     HeapFree( GetProcessHeap(), 0, dc );
 172 }
 173
 174
 175 /***********************************************************************
 176  *           free_dc_ptr
 177  */
 178 void free_dc_ptr( DC *dc )
 179 {
 180     assert( dc->refcount == 1 );
 181
 182     while (dc->physDev != &dc->nulldrv)
 183     {
 184         PHYSDEV physdev = dc->physDev;
 185         dc->physDev = physdev->next;
 186         physdev->funcs->pDeleteDC( physdev );
 187     }
 188     GDI_dec_ref_count( dc->hPen );
 189     GDI_dec_ref_count( dc->hBrush );
 190     GDI_dec_ref_count( dc->hFont );
 191     if (dc->hBitmap) GDI_dec_ref_count( dc->hBitmap );
 192     free_gdi_handle( dc->hSelf );
 193     free_dc_state( dc );
 194 }
 195
 196
 197 /***********************************************************************
 198  *           get_dc_ptr
 199  *
 200  * Retrieve a DC pointer but release the GDI lock.
 201  */
 202 DC *get_dc_ptr( HDC hdc )
 203 {
 204     DC *dc = get_dc_obj( hdc );
 205     if (!dc) return NULL;
 206
 207     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 208     {
 209         dc->thread = GetCurrentThreadId();
 210     }
 211     else if (dc->thread != GetCurrentThreadId())
 212     {
 213         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 214         GDI_ReleaseObj( hdc );
 215         return NULL;
 216     }
 217     else InterlockedIncrement( &dc->refcount );
 218
 219     GDI_ReleaseObj( hdc );
 220     return dc;
 221 }
 222
 223
 224 /***********************************************************************
 225  *           release_dc_ptr
 226  */
 227 void release_dc_ptr( DC *dc )
 228 {
 229     LONG ref;
 230
 231     dc->thread = 0;
 232     ref = InterlockedDecrement( &dc->refcount );
 233     assert( ref >= 0 );
 234     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 235 }
 236
 237
 238 /***********************************************************************
 239  *           update_dc
 240  *
 241  * Make sure the DC vis region is up to date.
 242  * This function may call up to USER so the GDI lock should _not_
 243  * be held when calling it.
 244  */
 245 void update_dc( DC *dc )
 246 {
 247     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 248         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 249 }
 250
 251
 252 /***********************************************************************
 253  *           DC_DeleteObject
 254  */
 255 static BOOL DC_DeleteObject( HGDIOBJ handle )
 256 {
 257     return DeleteDC( handle );
 258 }
 259
 260
 261 /***********************************************************************
 262  *           DC_InitDC
 263  *
 264  * Setup device-specific DC values for a newly created DC.
 265  */
 266 void DC_InitDC( DC* dc )
 267 {
 268     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 269     physdev->funcs->pRealizeDefaultPalette( physdev );
 270     SetTextColor( dc->hSelf, dc->textColor );
 271     SetBkColor( dc->hSelf, dc->backgroundColor );
 272     SelectObject( dc->hSelf, dc->hPen );
 273     SelectObject( dc->hSelf, dc->hBrush );
 274     SelectObject( dc->hSelf, dc->hFont );
 275     update_dc_clipping( dc );
 276     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 277     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
 278     physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE );
 279 }
 280
 281
 282 /***********************************************************************
 283  *           DC_InvertXform
 284  *
 285  * Computes the inverse of the transformation xformSrc and stores it to
 286  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 287  * is singular.
 288  */
 289 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 290 {
 291     double determinant;
 292
 293     determinant = xformSrc->eM11*xformSrc->eM22 -
 294         xformSrc->eM12*xformSrc->eM21;
 295     if (determinant > -1e-12 && determinant < 1e-12)
 296         return FALSE;
 297
 298     xformDest->eM11 =  xformSrc->eM22 / determinant;
 299     xformDest->eM12 = -xformSrc->eM12 / determinant;
 300     xformDest->eM21 = -xformSrc->eM21 / determinant;
 301     xformDest->eM22 =  xformSrc->eM11 / determinant;
 302     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 303                        xformSrc->eDy * xformDest->eM21;
 304     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 305                        xformSrc->eDy * xformDest->eM22;
 306
 307     return TRUE;
 308 }
 309
 310 /* Construct a transformation to do the window-to-viewport conversion */
 311 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 312 {
 313     double scaleX, scaleY;
 314     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 315     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 316
 317     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 318     xform->eM11 = scaleX;
 319     xform->eM12 = 0.0;
 320     xform->eM21 = 0.0;
 321     xform->eM22 = scaleY;
 322     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 323     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 324     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 325 }
 326
 327 /***********************************************************************
 328  *           DC_UpdateXforms
 329  *
 330  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 331  * fields of the specified DC by creating a transformation that
 332  * represents the current mapping mode and combining it with the DC's
 333  * world transform. This function should be called whenever the
 334  * parameters associated with the mapping mode (window and viewport
 335  * extents and origins) or the world transform change.
 336  */
 337 void DC_UpdateXforms( DC *dc )
 338 {
 339     XFORM xformWnd2Vport, oldworld2vport;
 340
 341     construct_window_to_viewport(dc, &xformWnd2Vport);
 342
 343     oldworld2vport = dc->xformWorld2Vport;
 344     /* Combine with the world transformation */
 345     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 346         &xformWnd2Vport );
 347
 348     /* Create inverse of world-to-viewport transformation */
 349     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 350         &dc->xformVport2World );
 351
 352     /* Reselect the font and pen back into the dc so that the size
 353        gets updated. */
 354     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 355         !GdiIsMetaFileDC(dc->hSelf))
 356     {
 357         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 358         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 359     }
 360 }
 361
 362
 363 /***********************************************************************
 364  *           nulldrv_SaveDC
 365  */
 366 INT nulldrv_SaveDC( PHYSDEV dev )
 367 {
 368     DC *newdc, *dc = get_nulldrv_dc( dev );
 369
 370     if (!(newdc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*newdc )))) return 0;
 371     newdc->layout           = dc->layout;
 372     newdc->hPen             = dc->hPen;
 373     newdc->hBrush           = dc->hBrush;
 374     newdc->hFont            = dc->hFont;
 375     newdc->hBitmap          = dc->hBitmap;
 376     newdc->hPalette         = dc->hPalette;
 377     newdc->ROPmode          = dc->ROPmode;
 378     newdc->polyFillMode     = dc->polyFillMode;
 379     newdc->stretchBltMode   = dc->stretchBltMode;
 380     newdc->relAbsMode       = dc->relAbsMode;
 381     newdc->backgroundMode   = dc->backgroundMode;
 382     newdc->backgroundColor  = dc->backgroundColor;
 383     newdc->textColor        = dc->textColor;
 384     newdc->dcBrushColor     = dc->dcBrushColor;
 385     newdc->dcPenColor       = dc->dcPenColor;
 386     newdc->brushOrgX        = dc->brushOrgX;
 387     newdc->brushOrgY        = dc->brushOrgY;
 388     newdc->mapperFlags      = dc->mapperFlags;
 389     newdc->textAlign        = dc->textAlign;
 390     newdc->charExtra        = dc->charExtra;
 391     newdc->breakExtra       = dc->breakExtra;
 392     newdc->breakRem         = dc->breakRem;
 393     newdc->MapMode          = dc->MapMode;
 394     newdc->GraphicsMode     = dc->GraphicsMode;
 395     newdc->CursPosX         = dc->CursPosX;
 396     newdc->CursPosY         = dc->CursPosY;
 397     newdc->ArcDirection     = dc->ArcDirection;
 398     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 399     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 400     newdc->xformVport2World = dc->xformVport2World;
 401     newdc->vport2WorldValid = dc->vport2WorldValid;
 402     newdc->wndOrgX          = dc->wndOrgX;
 403     newdc->wndOrgY          = dc->wndOrgY;
 404     newdc->wndExtX          = dc->wndExtX;
 405     newdc->wndExtY          = dc->wndExtY;
 406     newdc->vportOrgX        = dc->vportOrgX;
 407     newdc->vportOrgY        = dc->vportOrgY;
 408     newdc->vportExtX        = dc->vportExtX;
 409     newdc->vportExtY        = dc->vportExtY;
 410     newdc->virtual_res      = dc->virtual_res;
 411     newdc->virtual_size     = dc->virtual_size;
 412
 413     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 414
 415     if (dc->hClipRgn)
 416     {
 417         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 418         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 419     }
 420     if (dc->hMetaRgn)
 421     {
 422         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 423         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 424     }
 425
 426     if (!PATH_SavePath( newdc, dc ))
 427     {
 428         release_dc_ptr( dc );
 429         free_dc_state( newdc );
 430         return 0;
 431     }
 432
 433     newdc->saved_dc = dc->saved_dc;
 434     dc->saved_dc = newdc;
 435     return ++dc->saveLevel;
 436 }
 437
 438
 439 /***********************************************************************
 440  *           nulldrv_RestoreDC
 441  */
 442 BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 443 {
 444     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 445     INT save_level;
 446
 447     /* find the state level to restore */
 448
 449     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 450     if (level < 0) level = dc->saveLevel + level + 1;
 451     first_dcs = dc->saved_dc;
 452     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 453         dcs = dcs->saved_dc;
 454
 455     /* restore the state */
 456
 457     if (!PATH_RestorePath( dc, dcs )) return FALSE;
 458
 459     dc->layout           = dcs->layout;
 460     dc->ROPmode          = dcs->ROPmode;
 461     dc->polyFillMode     = dcs->polyFillMode;
 462     dc->stretchBltMode   = dcs->stretchBltMode;
 463     dc->relAbsMode       = dcs->relAbsMode;
 464     dc->backgroundMode   = dcs->backgroundMode;
 465     dc->backgroundColor  = dcs->backgroundColor;
 466     dc->textColor        = dcs->textColor;
 467     dc->dcBrushColor     = dcs->dcBrushColor;
 468     dc->dcPenColor       = dcs->dcPenColor;
 469     dc->brushOrgX        = dcs->brushOrgX;
 470     dc->brushOrgY        = dcs->brushOrgY;
 471     dc->mapperFlags      = dcs->mapperFlags;
 472     dc->textAlign        = dcs->textAlign;
 473     dc->charExtra        = dcs->charExtra;
 474     dc->breakExtra       = dcs->breakExtra;
 475     dc->breakRem         = dcs->breakRem;
 476     dc->MapMode          = dcs->MapMode;
 477     dc->GraphicsMode     = dcs->GraphicsMode;
 478     dc->CursPosX         = dcs->CursPosX;
 479     dc->CursPosY         = dcs->CursPosY;
 480     dc->ArcDirection     = dcs->ArcDirection;
 481     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 482     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 483     dc->xformVport2World = dcs->xformVport2World;
 484     dc->vport2WorldValid = dcs->vport2WorldValid;
 485     dc->wndOrgX          = dcs->wndOrgX;
 486     dc->wndOrgY          = dcs->wndOrgY;
 487     dc->wndExtX          = dcs->wndExtX;
 488     dc->wndExtY          = dcs->wndExtY;
 489     dc->vportOrgX        = dcs->vportOrgX;
 490     dc->vportOrgY        = dcs->vportOrgY;
 491     dc->vportExtX        = dcs->vportExtX;
 492     dc->vportExtY        = dcs->vportExtY;
 493     dc->virtual_res      = dcs->virtual_res;
 494     dc->virtual_size     = dcs->virtual_size;
 495
 496     if (dcs->hClipRgn)
 497     {
 498         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 499         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 500     }
 501     else
 502     {
 503         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 504         dc->hClipRgn = 0;
 505     }
 506     if (dcs->hMetaRgn)
 507     {
 508         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 509         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 510     }
 511     else
 512     {
 513         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 514         dc->hMetaRgn = 0;
 515     }
 516     DC_UpdateXforms( dc );
 517     update_dc_clipping( dc );
 518
 519     SelectObject( dev->hdc, dcs->hBitmap );
 520     SelectObject( dev->hdc, dcs->hBrush );
 521     SelectObject( dev->hdc, dcs->hFont );
 522     SelectObject( dev->hdc, dcs->hPen );
 523     SetBkColor( dev->hdc, dcs->backgroundColor);
 524     SetTextColor( dev->hdc, dcs->textColor);
 525     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 526
 527     dc->saved_dc  = dcs->saved_dc;
 528     dcs->saved_dc = 0;
 529     dc->saveLevel = save_level - 1;
 530
 531     /* now destroy all the saved DCs */
 532
 533     while (first_dcs)
 534     {
 535         DC *next = first_dcs->saved_dc;
 536         free_dc_state( first_dcs );
 537         first_dcs = next;
 538     }
 539     return TRUE;
 540 }
 541
 542
 543 /***********************************************************************
 544  *           reset_dc_state
 545  */
 546 static BOOL reset_dc_state( HDC hdc )
 547 {
 548     DC *dc, *dcs, *next;
 549
 550     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 551
 552     set_initial_dc_state( dc );
 553     SetBkColor( hdc, RGB( 255, 255, 255 ));
 554     SetTextColor( hdc, RGB( 0, 0, 0 ));
 555     SelectObject( hdc, GetStockObject( WHITE_BRUSH ));
 556     SelectObject( hdc, GetStockObject( SYSTEM_FONT ));
 557     SelectObject( hdc, GetStockObject( BLACK_PEN ));
 558     SetVirtualResolution( hdc, 0, 0, 0, 0 );
 559     GDISelectPalette( hdc, GetStockObject( DEFAULT_PALETTE ), FALSE );
 560     SetBoundsRect( hdc, NULL, DCB_DISABLE );
 561     AbortPath( hdc );
 562
 563     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 564     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 565     dc->hClipRgn = 0;
 566     dc->hMetaRgn = 0;
 567     update_dc_clipping( dc );
 568
 569     for (dcs = dc->saved_dc; dcs; dcs = next)
 570     {
 571         next = dcs->saved_dc;
 572         free_dc_state( dcs );
 573     }
 574     dc->saved_dc = NULL;
 575     dc->saveLevel = 0;
 576     release_dc_ptr( dc );
 577     return TRUE;
 578 }
 579
 580
 581 /***********************************************************************
 582  *           SaveDC    (GDI32.@)
 583  */
 584 INT WINAPI SaveDC( HDC hdc )
 585 {
 586     DC * dc;
 587     INT ret = 0;
 588
 589     if ((dc = get_dc_ptr( hdc )))
 590     {
 591         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 592         ret = physdev->funcs->pSaveDC( physdev );
 593         release_dc_ptr( dc );
 594     }
 595     return ret;
 596 }
 597
 598
 599 /***********************************************************************
 600  *           RestoreDC    (GDI32.@)
 601  */
 602 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 603 {
 604     PHYSDEV physdev;
 605     DC *dc;
 606     BOOL success = FALSE;
 607
 608     TRACE("%p %d\n", hdc, level );
 609     if ((dc = get_dc_ptr( hdc )))
 610     {
 611         update_dc( dc );
 612         physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 613         success = physdev->funcs->pRestoreDC( physdev, level );
 614         release_dc_ptr( dc );
 615     }
 616     return success;
 617 }
 618
 619
 620 /***********************************************************************
 621  *           CreateDCW    (GDI32.@)
 622  */
 623 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 624                       const DEVMODEW *initData )
 625 {
 626     HDC hdc;
 627     DC * dc;
 628     const struct gdi_dc_funcs *funcs;
 629     HMODULE module;
 630     WCHAR buf[300];
 631
 632     GDI_CheckNotLock();
 633
 634     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 635     {
 636         if (!driver)
 637         {
 638             ERR( "no device found for %s\n", debugstr_w(device) );
 639             return 0;
 640         }
 641         strcpyW(buf, driver);
 642     }
 643
 644     if (!(funcs = DRIVER_load_driver( buf, &module )))
 645     {
 646         ERR( "no driver found for %s\n", debugstr_w(buf) );
 647         return 0;
 648     }
 649     if (!(dc = alloc_dc_ptr( OBJ_DC ))) return 0;
 650     hdc = dc->hSelf;
 651
 652     dc->module  = module;
 653     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 654
 655     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 656           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 657
 658     if (funcs->pCreateDC)
 659     {
 660         if (!funcs->pCreateDC( &dc->physDev, buf, device, output, initData ))
 661         {
 662             WARN("creation aborted by device\n" );
 663             free_dc_ptr( dc );
 664             return 0;
 665         }
 666     }
 667
 668     dc->vis_rect.left   = 0;
 669     dc->vis_rect.top    = 0;
 670     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 671     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 672
 673     DC_InitDC( dc );
 674     release_dc_ptr( dc );
 675     return hdc;
 676 }
 677
 678
 679 /***********************************************************************
 680  *           CreateDCA    (GDI32.@)
 681  */
 682 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 683                       const DEVMODEA *initData )
 684 {
 685     UNICODE_STRING driverW, deviceW, outputW;
 686     DEVMODEW *initDataW;
 687     HDC ret;
 688
 689     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 690     else driverW.Buffer = NULL;
 691
 692     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 693     else deviceW.Buffer = NULL;
 694
 695     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 696     else outputW.Buffer = NULL;
 697
 698     initDataW = NULL;
 699     if (initData)
 700     {
 701         /* don't convert initData for DISPLAY driver, it's not used */
 702         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 703             initDataW = GdiConvertToDevmodeW(initData);
 704     }
 705
 706     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 707
 708     RtlFreeUnicodeString(&driverW);
 709     RtlFreeUnicodeString(&deviceW);
 710     RtlFreeUnicodeString(&outputW);
 711     HeapFree(GetProcessHeap(), 0, initDataW);
 712     return ret;
 713 }
 714
 715
 716 /***********************************************************************
 717  *           CreateICA    (GDI32.@)
 718  */
 719 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 720                           const DEVMODEA* initData )
 721 {
 722       /* Nothing special yet for ICs */
 723     return CreateDCA( driver, device, output, initData );
 724 }
 725
 726
 727 /***********************************************************************
 728  *           CreateICW    (GDI32.@)
 729  */
 730 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 731                           const DEVMODEW* initData )
 732 {
 733       /* Nothing special yet for ICs */
 734     return CreateDCW( driver, device, output, initData );
 735 }
 736
 737
 738 /***********************************************************************
 739  *           CreateCompatibleDC   (GDI32.@)
 740  */
 741 HDC WINAPI CreateCompatibleDC( HDC hdc )
 742 {
 743     DC *dc, *origDC;
 744     HDC ret;
 745     const struct gdi_dc_funcs *funcs = &null_driver;
 746     PHYSDEV physDev = NULL;
 747
 748     GDI_CheckNotLock();
 749
 750     if (hdc)
 751     {
 752         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 753         physDev = GET_DC_PHYSDEV( origDC, pCreateCompatibleDC );
 754         funcs = physDev->funcs;
 755         release_dc_ptr( origDC );
 756     }
 757
 758     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) return 0;
 759
 760     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 761
 762     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 763     dc->vis_rect.left   = 0;
 764     dc->vis_rect.top    = 0;
 765     dc->vis_rect.right  = 1;
 766     dc->vis_rect.bottom = 1;
 767     dc->device_rect = dc->vis_rect;
 768
 769     ret = dc->hSelf;
 770
 771     if (!funcs->pCreateCompatibleDC( physDev, &dc->physDev ))
 772     {
 773         WARN("creation aborted by device\n");
 774         free_dc_ptr( dc );
 775         return 0;
 776     }
 777
 778     if (!dib_driver.pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 779     {
 780         free_dc_ptr( dc );
 781         return 0;
 782     }
 783     physDev = GET_DC_PHYSDEV( dc, pSelectBitmap );
 784     physDev->funcs->pSelectBitmap( physDev, dc->hBitmap );
 785
 786     DC_InitDC( dc );
 787     release_dc_ptr( dc );
 788     return ret;
 789 }
 790
 791
 792 /***********************************************************************
 793  *           DeleteDC    (GDI32.@)
 794  */
 795 BOOL WINAPI DeleteDC( HDC hdc )
 796 {
 797     DC * dc;
 798
 799     TRACE("%p\n", hdc );
 800
 801     GDI_CheckNotLock();
 802
 803     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 804     if (dc->refcount != 1)
 805     {
 806         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 807         release_dc_ptr( dc );
 808         return FALSE;
 809     }
 810
 811     /* Call hook procedure to check whether is it OK to delete this DC */
 812     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 813     {
 814         release_dc_ptr( dc );
 815         return TRUE;
 816     }
 817     reset_dc_state( hdc );
 818     free_dc_ptr( dc );
 819     return TRUE;
 820 }
 821
 822
 823 /***********************************************************************
 824  *           ResetDCW    (GDI32.@)
 825  */
 826 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 827 {
 828     DC *dc;
 829     HDC ret = 0;
 830
 831     if ((dc = get_dc_ptr( hdc )))
 832     {
 833         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 834         ret = physdev->funcs->pResetDC( physdev, devmode );
 835         if (ret)  /* reset the visible region */
 836         {
 837             dc->dirty = 0;
 838             dc->vis_rect.left   = 0;
 839             dc->vis_rect.top    = 0;
 840             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 841             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 842             if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 843             dc->hVisRgn = 0;
 844             update_dc_clipping( dc );
 845         }
 846         release_dc_ptr( dc );
 847     }
 848     return ret;
 849 }
 850
 851
 852 /***********************************************************************
 853  *           ResetDCA    (GDI32.@)
 854  */
 855 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 856 {
 857     DEVMODEW *devmodeW;
 858     HDC ret;
 859
 860     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 861     else devmodeW = NULL;
 862
 863     ret = ResetDCW(hdc, devmodeW);
 864
 865     HeapFree(GetProcessHeap(), 0, devmodeW);
 866     return ret;
 867 }
 868
 869
 870 /***********************************************************************
 871  *           GetDeviceCaps    (GDI32.@)
 872  */
 873 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 874 {
 875     DC *dc;
 876     INT ret = 0;
 877
 878     if ((dc = get_dc_ptr( hdc )))
 879     {
 880         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 881         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 882         release_dc_ptr( dc );
 883     }
 884     return ret;
 885 }
 886
 887
 888 /***********************************************************************
 889  *              GetBkColor (GDI32.@)
 890  */
 891 COLORREF WINAPI GetBkColor( HDC hdc )
 892 {
 893     COLORREF ret = 0;
 894     DC * dc = get_dc_ptr( hdc );
 895     if (dc)
 896     {
 897         ret = dc->backgroundColor;
 898         release_dc_ptr( dc );
 899     }
 900     return ret;
 901 }
 902
 903
 904 /***********************************************************************
 905  *           SetBkColor    (GDI32.@)
 906  */
 907 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 908 {
 909     COLORREF ret = CLR_INVALID;
 910     DC * dc = get_dc_ptr( hdc );
 911
 912     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 913
 914     if (dc)
 915     {
 916         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 917         ret = dc->backgroundColor;
 918         dc->backgroundColor = physdev->funcs->pSetBkColor( physdev, color );
 919         release_dc_ptr( dc );
 920     }
 921     return ret;
 922 }
 923
 924
 925 /***********************************************************************
 926  *              GetTextColor (GDI32.@)
 927  */
 928 COLORREF WINAPI GetTextColor( HDC hdc )
 929 {
 930     COLORREF ret = 0;
 931     DC * dc = get_dc_ptr( hdc );
 932     if (dc)
 933     {
 934         ret = dc->textColor;
 935         release_dc_ptr( dc );
 936     }
 937     return ret;
 938 }
 939
 940
 941 /***********************************************************************
 942  *           SetTextColor    (GDI32.@)
 943  */
 944 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 945 {
 946     COLORREF ret = CLR_INVALID;
 947     DC * dc = get_dc_ptr( hdc );
 948
 949     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 950
 951     if (dc)
 952     {
 953         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 954         ret = dc->textColor;
 955         dc->textColor = physdev->funcs->pSetTextColor( physdev, color );
 956         release_dc_ptr( dc );
 957     }
 958     return ret;
 959 }
 960
 961
 962 /***********************************************************************
 963  *              GetTextAlign (GDI32.@)
 964  */
 965 UINT WINAPI GetTextAlign( HDC hdc )
 966 {
 967     UINT ret = 0;
 968     DC * dc = get_dc_ptr( hdc );
 969     if (dc)
 970     {
 971         ret = dc->textAlign;
 972         release_dc_ptr( dc );
 973     }
 974     return ret;
 975 }
 976
 977
 978 /***********************************************************************
 979  *           SetTextAlign    (GDI32.@)
 980  */
 981 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 982 {
 983     UINT ret = GDI_ERROR;
 984     DC *dc = get_dc_ptr( hdc );
 985
 986     TRACE("hdc=%p align=%d\n", hdc, align);
 987
 988     if (dc)
 989     {
 990         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
 991         align = physdev->funcs->pSetTextAlign( physdev, align );
 992         if (align != GDI_ERROR)
 993         {
 994             ret = dc->textAlign;
 995             dc->textAlign = align;
 996         }
 997         release_dc_ptr( dc );
 998     }
 999     return ret;
1000 }
1001
1002 /***********************************************************************
1003  *           GetDCOrgEx  (GDI32.@)
1004  */
1005 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1006 {
1007     DC * dc;
1008
1009     if (!lpp) return FALSE;
1010     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1011     lpp->x = dc->vis_rect.left;
1012     lpp->y = dc->vis_rect.top;
1013     release_dc_ptr( dc );
1014     return TRUE;
1015 }
1016
1017
1018 /***********************************************************************
1019  *              GetGraphicsMode (GDI32.@)
1020  */
1021 INT WINAPI GetGraphicsMode( HDC hdc )
1022 {
1023     INT ret = 0;
1024     DC * dc = get_dc_ptr( hdc );
1025     if (dc)
1026     {
1027         ret = dc->GraphicsMode;
1028         release_dc_ptr( dc );
1029     }
1030     return ret;
1031 }
1032
1033
1034 /***********************************************************************
1035  *           SetGraphicsMode    (GDI32.@)
1036  */
1037 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1038 {
1039     INT ret = 0;
1040     DC *dc = get_dc_ptr( hdc );
1041
1042     /* One would think that setting the graphics mode to GM_COMPATIBLE
1043      * would also reset the world transformation matrix to the unity
1044      * matrix. However, in Windows, this is not the case. This doesn't
1045      * make a lot of sense to me, but that's the way it is.
1046      */
1047     if (!dc) return 0;
1048     if ((mode > 0) && (mode <= GM_LAST))
1049     {
1050         ret = dc->GraphicsMode;
1051         dc->GraphicsMode = mode;
1052     }
1053     release_dc_ptr( dc );
1054     /* font metrics depend on the graphics mode */
1055     if (ret) SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
1056     return ret;
1057 }
1058
1059
1060 /***********************************************************************
1061  *              GetArcDirection (GDI32.@)
1062  */
1063 INT WINAPI GetArcDirection( HDC hdc )
1064 {
1065     INT ret = 0;
1066     DC * dc = get_dc_ptr( hdc );
1067     if (dc)
1068     {
1069         ret = dc->ArcDirection;
1070         release_dc_ptr( dc );
1071     }
1072     return ret;
1073 }
1074
1075
1076 /***********************************************************************
1077  *           SetArcDirection    (GDI32.@)
1078  */
1079 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1080 {
1081     DC * dc;
1082     INT ret = 0;
1083
1084     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1085     {
1086         SetLastError(ERROR_INVALID_PARAMETER);
1087         return 0;
1088     }
1089
1090     if ((dc = get_dc_ptr( hdc )))
1091     {
1092         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1093         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1094         if (dir)
1095         {
1096             ret = dc->ArcDirection;
1097             dc->ArcDirection = dir;
1098         }
1099         release_dc_ptr( dc );
1100     }
1101     return ret;
1102 }
1103
1104
1105 /***********************************************************************
1106  *           GetWorldTransform    (GDI32.@)
1107  */
1108 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1109 {
1110     DC * dc;
1111     if (!xform) return FALSE;
1112     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1113     *xform = dc->xformWorld2Wnd;
1114     release_dc_ptr( dc );
1115     return TRUE;
1116 }
1117
1118
1119 /***********************************************************************
1120  *           GetTransform    (GDI32.@)
1121  *
1122  * Undocumented
1123  *
1124  * Returns one of the co-ordinate space transforms
1125  *
1126  * PARAMS
1127  *    hdc   [I] Device context.
1128  *    which [I] Which xform to return:
1129  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1130  *                  0x304 Page -> Device transform (the mapping mode transform).
1131  *                  0x204 World -> Device transform (the combination of the above two).
1132  *                  0x402 Device -> World transform (the inversion of the above).
1133  *    xform [O] The xform.
1134  *
1135  */
1136 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1137 {
1138     BOOL ret = TRUE;
1139     DC *dc = get_dc_ptr( hdc );
1140     if (!dc) return FALSE;
1141
1142     switch(which)
1143     {
1144     case 0x203:
1145         *xform = dc->xformWorld2Wnd;
1146         break;
1147
1148     case 0x304:
1149         construct_window_to_viewport(dc, xform);
1150         break;
1151
1152     case 0x204:
1153         *xform = dc->xformWorld2Vport;
1154         break;
1155
1156     case 0x402:
1157         *xform = dc->xformVport2World;
1158         break;
1159
1160     default:
1161         FIXME("Unknown code %x\n", which);
1162         ret = FALSE;
1163     }
1164
1165     release_dc_ptr( dc );
1166     return ret;
1167 }
1168
1169
1170 /****************************************************************************
1171  * CombineTransform [GDI32.@]
1172  * Combines two transformation matrices.
1173  *
1174  * PARAMS
1175  *    xformResult [O] Stores the result of combining the two matrices
1176  *    xform1      [I] Specifies the first matrix to apply
1177  *    xform2      [I] Specifies the second matrix to apply
1178  *
1179  * REMARKS
1180  *    The same matrix can be passed in for more than one of the parameters.
1181  *
1182  * RETURNS
1183  *  Success: TRUE.
1184  *  Failure: FALSE. Use GetLastError() to determine the cause.
1185  */
1186 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1187     const XFORM *xform2 )
1188 {
1189     XFORM xformTemp;
1190
1191     /* Check for illegal parameters */
1192     if (!xformResult || !xform1 || !xform2)
1193         return FALSE;
1194
1195     /* Create the result in a temporary XFORM, since xformResult may be
1196      * equal to xform1 or xform2 */
1197     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1198                      xform1->eM12 * xform2->eM21;
1199     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1200                      xform1->eM12 * xform2->eM22;
1201     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1202                      xform1->eM22 * xform2->eM21;
1203     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1204                      xform1->eM22 * xform2->eM22;
1205     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1206                      xform1->eDy  * xform2->eM21 +
1207                      xform2->eDx;
1208     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1209                      xform1->eDy  * xform2->eM22 +
1210                      xform2->eDy;
1211
1212     /* Copy the result to xformResult */
1213     *xformResult = xformTemp;
1214
1215     return TRUE;
1216 }
1217
1218
1219 /***********************************************************************
1220  *           SetDCHook   (GDI32.@)
1221  *
1222  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1223  */
1224 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1225 {
1226     DC *dc = get_dc_ptr( hdc );
1227
1228     if (!dc) return FALSE;
1229
1230     dc->dwHookData = dwHookData;
1231     dc->hookProc = hookProc;
1232     release_dc_ptr( dc );
1233     return TRUE;
1234 }
1235
1236
1237 /***********************************************************************
1238  *           GetDCHook   (GDI32.@)
1239  *
1240  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1241  */
1242 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1243 {
1244     DC *dc = get_dc_ptr( hdc );
1245     DWORD_PTR ret;
1246
1247     if (!dc) return 0;
1248     if (proc) *proc = dc->hookProc;
1249     ret = dc->dwHookData;
1250     release_dc_ptr( dc );
1251     return ret;
1252 }
1253
1254
1255 /***********************************************************************
1256  *           SetHookFlags   (GDI32.@)
1257  *
1258  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1259  */
1260 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1261 {
1262     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1263     LONG ret = 0;
1264
1265     if (!dc) return 0;
1266
1267     TRACE("hDC %p, flags %04x\n",hdc,flags);
1268
1269     if (flags & DCHF_INVALIDATEVISRGN)
1270         ret = InterlockedExchange( &dc->dirty, 1 );
1271     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1272         ret = InterlockedExchange( &dc->dirty, 0 );
1273
1274     GDI_ReleaseObj( hdc );
1275
1276     if (flags & DCHF_RESETDC) ret = reset_dc_state( hdc );
1277     return ret;
1278 }
1279
1280 /***********************************************************************
1281  *           SetICMMode    (GDI32.@)
1282  */
1283 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1284 {
1285 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1286     if (iEnableICM == ICM_OFF) return ICM_OFF;
1287     if (iEnableICM == ICM_ON) return 0;
1288     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1289     return 0;
1290 }
1291
1292 /***********************************************************************
1293  *           GetDeviceGammaRamp    (GDI32.@)
1294  */
1295 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1296 {
1297     BOOL ret = FALSE;
1298     DC *dc = get_dc_ptr( hDC );
1299
1300     TRACE("%p, %p\n", hDC, ptr);
1301     if( dc )
1302     {
1303         if (GetObjectType( hDC ) != OBJ_MEMDC)
1304         {
1305             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1306             ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1307         }
1308         else SetLastError( ERROR_INVALID_PARAMETER );
1309         release_dc_ptr( dc );
1310     }
1311     return ret;
1312 }
1313
1314 /***********************************************************************
1315  *           SetDeviceGammaRamp    (GDI32.@)
1316  */
1317 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1318 {
1319     BOOL ret = FALSE;
1320     DC *dc = get_dc_ptr( hDC );
1321
1322     TRACE("%p, %p\n", hDC, ptr);
1323     if( dc )
1324     {
1325         if (GetObjectType( hDC ) != OBJ_MEMDC)
1326         {
1327             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1328             ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1329         }
1330         else SetLastError( ERROR_INVALID_PARAMETER );
1331         release_dc_ptr( dc );
1332     }
1333     return ret;
1334 }
1335
1336 /***********************************************************************
1337  *           GetColorSpace    (GDI32.@)
1338  */
1339 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1340 {
1341 /*FIXME    Need to do whatever GetColorSpace actually does */
1342     return 0;
1343 }
1344
1345 /***********************************************************************
1346  *           CreateColorSpaceA    (GDI32.@)
1347  */
1348 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1349 {
1350   FIXME( "stub\n" );
1351   return 0;
1352 }
1353
1354 /***********************************************************************
1355  *           CreateColorSpaceW    (GDI32.@)
1356  */
1357 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1358 {
1359   FIXME( "stub\n" );
1360   return 0;
1361 }
1362
1363 /***********************************************************************
1364  *           DeleteColorSpace     (GDI32.@)
1365  */
1366 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1367 {
1368   FIXME( "stub\n" );
1369
1370   return TRUE;
1371 }
1372
1373 /***********************************************************************
1374  *           SetColorSpace     (GDI32.@)
1375  */
1376 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1377 {
1378   FIXME( "stub\n" );
1379
1380   return hColorSpace;
1381 }
1382
1383 /***********************************************************************
1384  *           GetBoundsRect    (GDI32.@)
1385  */
1386 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1387 {
1388     PHYSDEV physdev;
1389     RECT device_rect;
1390     UINT ret;
1391     DC *dc = get_dc_ptr( hdc );
1392
1393     if ( !dc ) return 0;
1394
1395     physdev = GET_DC_PHYSDEV( dc, pGetBoundsRect );
1396     ret = physdev->funcs->pGetBoundsRect( physdev, &device_rect, DCB_RESET );
1397     if (!ret)
1398     {
1399         release_dc_ptr( dc );
1400         return 0;
1401     }
1402     if (dc->bounds_enabled && ret == DCB_SET) add_bounds_rect( &dc->bounds, &device_rect );
1403
1404     if (rect)
1405     {
1406         if (is_rect_empty( &dc->bounds ))
1407         {
1408             rect->left = rect->top = rect->right = rect->bottom = 0;
1409             ret = DCB_RESET;
1410         }
1411         else
1412         {
1413             *rect = dc->bounds;
1414             rect->left   = max( rect->left, 0 );
1415             rect->top    = max( rect->top, 0 );
1416             rect->right  = min( rect->right, dc->vis_rect.right - dc->vis_rect.left );
1417             rect->bottom = min( rect->bottom, dc->vis_rect.bottom - dc->vis_rect.top );
1418             ret = DCB_SET;
1419         }
1420         DPtoLP( hdc, (POINT *)rect, 2 );
1421     }
1422     else ret = 0;
1423
1424     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1425     release_dc_ptr( dc );
1426     return ret;
1427 }
1428
1429
1430 /***********************************************************************
1431  *           SetBoundsRect    (GDI32.@)
1432  */
1433 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1434 {
1435     PHYSDEV physdev;
1436     UINT ret;
1437     DC *dc;
1438
1439     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1440     if (!(dc = get_dc_ptr( hdc ))) return 0;
1441
1442     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
1443     ret = physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, flags );
1444     if (!ret)
1445     {
1446         release_dc_ptr( dc );
1447         return 0;
1448     }
1449
1450     ret = (dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE) |
1451           (is_rect_empty( &dc->bounds ) ? ret & DCB_SET : DCB_SET);
1452
1453     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1454
1455     if ((flags & DCB_ACCUMULATE) && rect)
1456     {
1457         RECT rc = *rect;
1458
1459         LPtoDP( hdc, (POINT *)&rc, 2 );
1460         add_bounds_rect( &dc->bounds, &rc );
1461     }
1462
1463     if (flags & DCB_ENABLE) dc->bounds_enabled = TRUE;
1464     if (flags & DCB_DISABLE) dc->bounds_enabled = FALSE;
1465
1466     release_dc_ptr( dc );
1467     return ret;
1468 }
1469
1470
1471 /***********************************************************************
1472  *              GetRelAbs               (GDI32.@)
1473  */
1474 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1475 {
1476     INT ret = 0;
1477     DC *dc = get_dc_ptr( hdc );
1478     if (dc)
1479     {
1480         ret = dc->relAbsMode;
1481         release_dc_ptr( dc );
1482     }
1483     return ret;
1484 }
1485
1486
1487
1488
1489 /***********************************************************************
1490  *              GetBkMode (GDI32.@)
1491  */
1492 INT WINAPI GetBkMode( HDC hdc )
1493 {
1494     INT ret = 0;
1495     DC * dc = get_dc_ptr( hdc );
1496     if (dc)
1497     {
1498         ret = dc->backgroundMode;
1499         release_dc_ptr( dc );
1500     }
1501     return ret;
1502 }
1503
1504
1505 /***********************************************************************
1506  *              SetBkMode (GDI32.@)
1507  */
1508 INT WINAPI SetBkMode( HDC hdc, INT mode )
1509 {
1510     INT ret = 0;
1511     DC *dc;
1512
1513     if ((mode <= 0) || (mode > BKMODE_LAST))
1514     {
1515         SetLastError(ERROR_INVALID_PARAMETER);
1516         return 0;
1517     }
1518     if ((dc = get_dc_ptr( hdc )))
1519     {
1520         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1521         mode = physdev->funcs->pSetBkMode( physdev, mode );
1522         if (mode)
1523         {
1524             ret = dc->backgroundMode;
1525             dc->backgroundMode = mode;
1526         }
1527         release_dc_ptr( dc );
1528     }
1529     return ret;
1530 }
1531
1532
1533 /***********************************************************************
1534  *              GetROP2 (GDI32.@)
1535  */
1536 INT WINAPI GetROP2( HDC hdc )
1537 {
1538     INT ret = 0;
1539     DC * dc = get_dc_ptr( hdc );
1540     if (dc)
1541     {
1542         ret = dc->ROPmode;
1543         release_dc_ptr( dc );
1544     }
1545     return ret;
1546 }
1547
1548
1549 /***********************************************************************
1550  *              SetROP2 (GDI32.@)
1551  */
1552 INT WINAPI SetROP2( HDC hdc, INT mode )
1553 {
1554     INT ret = 0;
1555     DC *dc;
1556
1557     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1558     {
1559         SetLastError(ERROR_INVALID_PARAMETER);
1560         return 0;
1561     }
1562     if ((dc = get_dc_ptr( hdc )))
1563     {
1564         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1565         mode = physdev->funcs->pSetROP2( physdev, mode );
1566         if (mode)
1567         {
1568             ret = dc->ROPmode;
1569             dc->ROPmode = mode;
1570         }
1571         release_dc_ptr( dc );
1572     }
1573     return ret;
1574 }
1575
1576
1577 /***********************************************************************
1578  *              SetRelAbs (GDI32.@)
1579  */
1580 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1581 {
1582     INT ret = 0;
1583     DC *dc;
1584
1585     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1586     {
1587         SetLastError(ERROR_INVALID_PARAMETER);
1588         return 0;
1589     }
1590     if ((dc = get_dc_ptr( hdc )))
1591     {
1592         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1593         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1594         if (mode)
1595         {
1596             ret = dc->relAbsMode;
1597             dc->relAbsMode = mode;
1598         }
1599         release_dc_ptr( dc );
1600     }
1601     return ret;
1602 }
1603
1604
1605 /***********************************************************************
1606  *              GetPolyFillMode (GDI32.@)
1607  */
1608 INT WINAPI GetPolyFillMode( HDC hdc )
1609 {
1610     INT ret = 0;
1611     DC * dc = get_dc_ptr( hdc );
1612     if (dc)
1613     {
1614         ret = dc->polyFillMode;
1615         release_dc_ptr( dc );
1616     }
1617     return ret;
1618 }
1619
1620
1621 /***********************************************************************
1622  *              SetPolyFillMode (GDI32.@)
1623  */
1624 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1625 {
1626     INT ret = 0;
1627     DC *dc;
1628
1629     if ((mode <= 0) || (mode > POLYFILL_LAST))
1630     {
1631         SetLastError(ERROR_INVALID_PARAMETER);
1632         return 0;
1633     }
1634     if ((dc = get_dc_ptr( hdc )))
1635     {
1636         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1637         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1638         if (mode)
1639         {
1640             ret = dc->polyFillMode;
1641             dc->polyFillMode = mode;
1642         }
1643         release_dc_ptr( dc );
1644     }
1645     return ret;
1646 }
1647
1648
1649 /***********************************************************************
1650  *              GetStretchBltMode (GDI32.@)
1651  */
1652 INT WINAPI GetStretchBltMode( HDC hdc )
1653 {
1654     INT ret = 0;
1655     DC * dc = get_dc_ptr( hdc );
1656     if (dc)
1657     {
1658         ret = dc->stretchBltMode;
1659         release_dc_ptr( dc );
1660     }
1661     return ret;
1662 }
1663
1664
1665 /***********************************************************************
1666  *              SetStretchBltMode (GDI32.@)
1667  */
1668 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1669 {
1670     INT ret = 0;
1671     DC *dc;
1672
1673     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1674     {
1675         SetLastError(ERROR_INVALID_PARAMETER);
1676         return 0;
1677     }
1678     if ((dc = get_dc_ptr( hdc )))
1679     {
1680         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1681         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1682         if (mode)
1683         {
1684             ret = dc->stretchBltMode;
1685             dc->stretchBltMode = mode;
1686         }
1687         release_dc_ptr( dc );
1688     }
1689     return ret;
1690 }
1691
1692
1693 /***********************************************************************
1694  *              GetMapMode (GDI32.@)
1695  */
1696 INT WINAPI GetMapMode( HDC hdc )
1697 {
1698     INT ret = 0;
1699     DC * dc = get_dc_ptr( hdc );
1700     if (dc)
1701     {
1702         ret = dc->MapMode;
1703         release_dc_ptr( dc );
1704     }
1705     return ret;
1706 }
1707
1708
1709 /***********************************************************************
1710  *              GetBrushOrgEx (GDI32.@)
1711  */
1712 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1713 {
1714     DC * dc = get_dc_ptr( hdc );
1715     if (!dc) return FALSE;
1716     pt->x = dc->brushOrgX;
1717     pt->y = dc->brushOrgY;
1718     release_dc_ptr( dc );
1719     return TRUE;
1720 }
1721
1722
1723 /***********************************************************************
1724  *              GetCurrentPositionEx (GDI32.@)
1725  */
1726 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1727 {
1728     DC * dc = get_dc_ptr( hdc );
1729     if (!dc) return FALSE;
1730     pt->x = dc->CursPosX;
1731     pt->y = dc->CursPosY;
1732     release_dc_ptr( dc );
1733     return TRUE;
1734 }
1735
1736
1737 /***********************************************************************
1738  *              GetViewportExtEx (GDI32.@)
1739  */
1740 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1741 {
1742     DC * dc = get_dc_ptr( hdc );
1743     if (!dc) return FALSE;
1744     size->cx = dc->vportExtX;
1745     size->cy = dc->vportExtY;
1746     release_dc_ptr( dc );
1747     return TRUE;
1748 }
1749
1750
1751 /***********************************************************************
1752  *              GetViewportOrgEx (GDI32.@)
1753  */
1754 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1755 {
1756     DC * dc = get_dc_ptr( hdc );
1757     if (!dc) return FALSE;
1758     pt->x = dc->vportOrgX;
1759     pt->y = dc->vportOrgY;
1760     release_dc_ptr( dc );
1761     return TRUE;
1762 }
1763
1764
1765 /***********************************************************************
1766  *              GetWindowExtEx (GDI32.@)
1767  */
1768 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1769 {
1770     DC * dc = get_dc_ptr( hdc );
1771     if (!dc) return FALSE;
1772     size->cx = dc->wndExtX;
1773     size->cy = dc->wndExtY;
1774     release_dc_ptr( dc );
1775     return TRUE;
1776 }
1777
1778
1779 /***********************************************************************
1780  *              GetWindowOrgEx (GDI32.@)
1781  */
1782 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1783 {
1784     DC * dc = get_dc_ptr( hdc );
1785     if (!dc) return FALSE;
1786     pt->x = dc->wndOrgX;
1787     pt->y = dc->wndOrgY;
1788     release_dc_ptr( dc );
1789     return TRUE;
1790 }
1791
1792
1793 /***********************************************************************
1794  *           GetLayout    (GDI32.@)
1795  *
1796  * Gets left->right or right->left text layout flags of a dc.
1797  *
1798  */
1799 DWORD WINAPI GetLayout(HDC hdc)
1800 {
1801     DWORD layout = GDI_ERROR;
1802
1803     DC * dc = get_dc_ptr( hdc );
1804     if (dc)
1805     {
1806         layout = dc->layout;
1807         release_dc_ptr( dc );
1808     }
1809
1810     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1811
1812     return layout;
1813 }
1814
1815 /***********************************************************************
1816  *           SetLayout    (GDI32.@)
1817  *
1818  * Sets left->right or right->left text layout flags of a dc.
1819  *
1820  */
1821 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1822 {
1823     DWORD oldlayout = GDI_ERROR;
1824
1825     DC * dc = get_dc_ptr( hdc );
1826     if (dc)
1827     {
1828         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1829         layout = physdev->funcs->pSetLayout( physdev, layout );
1830         if (layout != GDI_ERROR)
1831         {
1832             oldlayout = dc->layout;
1833             dc->layout = layout;
1834             if (layout != oldlayout)
1835             {
1836                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1837                 DC_UpdateXforms( dc );
1838             }
1839         }
1840         release_dc_ptr( dc );
1841     }
1842
1843     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1844
1845     return oldlayout;
1846 }
1847
1848 /***********************************************************************
1849  *           GetDCBrushColor    (GDI32.@)
1850  */
1851 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1852 {
1853     DC *dc;
1854     COLORREF dcBrushColor = CLR_INVALID;
1855
1856     TRACE("hdc(%p)\n", hdc);
1857
1858     dc = get_dc_ptr( hdc );
1859     if (dc)
1860     {
1861         dcBrushColor = dc->dcBrushColor;
1862         release_dc_ptr( dc );
1863     }
1864
1865     return dcBrushColor;
1866 }
1867
1868 /***********************************************************************
1869  *           SetDCBrushColor    (GDI32.@)
1870  */
1871 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1872 {
1873     DC *dc;
1874     COLORREF oldClr = CLR_INVALID;
1875
1876     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1877
1878     dc = get_dc_ptr( hdc );
1879     if (dc)
1880     {
1881         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1882         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1883         if (crColor != CLR_INVALID)
1884         {
1885             oldClr = dc->dcBrushColor;
1886             dc->dcBrushColor = crColor;
1887         }
1888         release_dc_ptr( dc );
1889     }
1890
1891     return oldClr;
1892 }
1893
1894 /***********************************************************************
1895  *           GetDCPenColor    (GDI32.@)
1896  */
1897 COLORREF WINAPI GetDCPenColor(HDC hdc)
1898 {
1899     DC *dc;
1900     COLORREF dcPenColor = CLR_INVALID;
1901
1902     TRACE("hdc(%p)\n", hdc);
1903
1904     dc = get_dc_ptr( hdc );
1905     if (dc)
1906     {
1907         dcPenColor = dc->dcPenColor;
1908         release_dc_ptr( dc );
1909     }
1910
1911     return dcPenColor;
1912 }
1913
1914 /***********************************************************************
1915  *           SetDCPenColor    (GDI32.@)
1916  */
1917 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
1918 {
1919     DC *dc;
1920     COLORREF oldClr = CLR_INVALID;
1921
1922     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1923
1924     dc = get_dc_ptr( hdc );
1925     if (dc)
1926     {
1927         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
1928         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
1929         if (crColor != CLR_INVALID)
1930         {
1931             oldClr = dc->dcPenColor;
1932             dc->dcPenColor = crColor;
1933         }
1934         release_dc_ptr( dc );
1935     }
1936
1937     return oldClr;
1938 }
1939
1940 /***********************************************************************
1941  *           CancelDC    (GDI32.@)
1942  */
1943 BOOL WINAPI CancelDC(HDC hdc)
1944 {
1945     FIXME("stub\n");
1946     return TRUE;
1947 }
1948
1949 /*******************************************************************
1950  *      GetMiterLimit [GDI32.@]
1951  *
1952  *
1953  */
1954 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
1955 {
1956     BOOL bRet = FALSE;
1957     DC *dc;
1958
1959     TRACE("(%p,%p)\n", hdc, peLimit);
1960
1961     dc = get_dc_ptr( hdc );
1962     if (dc)
1963     {
1964         if (peLimit)
1965             *peLimit = dc->miterLimit;
1966
1967         release_dc_ptr( dc );
1968         bRet = TRUE;
1969     }
1970     return bRet;
1971 }
1972
1973 /*******************************************************************
1974  *      SetMiterLimit [GDI32.@]
1975  *
1976  *
1977  */
1978 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
1979 {
1980     BOOL bRet = FALSE;
1981     DC *dc;
1982
1983     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
1984
1985     dc = get_dc_ptr( hdc );
1986     if (dc)
1987     {
1988         if (peOldLimit)
1989             *peOldLimit = dc->miterLimit;
1990         dc->miterLimit = eNewLimit;
1991         release_dc_ptr( dc );
1992         bRet = TRUE;
1993     }
1994     return bRet;
1995 }
1996
1997 /*******************************************************************
1998  *      GdiIsMetaPrintDC [GDI32.@]
1999  */
2000 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2001 {
2002     FIXME("%p\n", hdc);
2003     return FALSE;
2004 }
2005
2006 /*******************************************************************
2007  *      GdiIsMetaFileDC [GDI32.@]
2008  */
2009 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2010 {
2011     TRACE("%p\n", hdc);
2012
2013     switch( GetObjectType( hdc ) )
2014     {
2015     case OBJ_METADC:
2016     case OBJ_ENHMETADC:
2017         return TRUE;
2018     }
2019     return FALSE;
2020 }
2021
2022 /*******************************************************************
2023  *      GdiIsPlayMetafileDC [GDI32.@]
2024  */
2025 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2026 {
2027     FIXME("%p\n", hdc);
2028     return FALSE;
2029 }