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     if ((dc->header.type != OBJ_DC) &&
  59         (dc->header.type != OBJ_MEMDC) &&
  60         (dc->header.type != OBJ_METADC) &&
  61         (dc->header.type != OBJ_ENHMETADC))
  62     {
  63         GDI_ReleaseObj( hdc );
  64         SetLastError( ERROR_INVALID_HANDLE );
  65         dc = NULL;
  66     }
  67     return dc;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           alloc_dc_ptr
  73  */
  74 DC *alloc_dc_ptr( WORD magic )
  75 {
  76     DC *dc;
  77
  78     if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
  79
  80     dc->nulldrv.funcs       = &null_driver;
  81     dc->nulldrv.next        = NULL;
  82     dc->dibdrv.dev.funcs    = &dib_driver;
  83     dc->dibdrv.dev.next     = NULL;
  84     dc->physDev             = &dc->nulldrv;
  85     dc->thread              = GetCurrentThreadId();
  86     dc->refcount            = 1;
  87     dc->dirty               = 0;
  88     dc->saveLevel           = 0;
  89     dc->saved_dc            = 0;
  90     dc->dwHookData          = 0;
  91     dc->hookProc            = NULL;
  92     dc->wndOrgX             = 0;
  93     dc->wndOrgY             = 0;
  94     dc->wndExtX             = 1;
  95     dc->wndExtY             = 1;
  96     dc->vportOrgX           = 0;
  97     dc->vportOrgY           = 0;
  98     dc->vportExtX           = 1;
  99     dc->vportExtY           = 1;
 100     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
 101     dc->flags               = 0;
 102     dc->layout              = 0;
 103     dc->hClipRgn            = 0;
 104     dc->hMetaRgn            = 0;
 105     dc->hMetaClipRgn        = 0;
 106     dc->hVisRgn             = 0;
 107     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 108     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 109     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 110     dc->hBitmap             = 0;
 111     dc->hDevice             = 0;
 112     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 113     dc->gdiFont             = 0;
 114     dc->font_code_page      = CP_ACP;
 115     dc->ROPmode             = R2_COPYPEN;
 116     dc->polyFillMode        = ALTERNATE;
 117     dc->stretchBltMode      = BLACKONWHITE;
 118     dc->relAbsMode          = ABSOLUTE;
 119     dc->backgroundMode      = OPAQUE;
 120     dc->backgroundColor     = RGB( 255, 255, 255 );
 121     dc->dcBrushColor        = RGB( 255, 255, 255 );
 122     dc->dcPenColor          = RGB( 0, 0, 0 );
 123     dc->textColor           = RGB( 0, 0, 0 );
 124     dc->brushOrgX           = 0;
 125     dc->brushOrgY           = 0;
 126     dc->mapperFlags         = 0;
 127     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 128     dc->charExtra           = 0;
 129     dc->breakExtra          = 0;
 130     dc->breakRem            = 0;
 131     dc->MapMode             = MM_TEXT;
 132     dc->GraphicsMode        = GM_COMPATIBLE;
 133     dc->pAbortProc          = NULL;
 134     dc->CursPosX            = 0;
 135     dc->CursPosY            = 0;
 136     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 137     dc->xformWorld2Wnd.eM11 = 1.0f;
 138     dc->xformWorld2Wnd.eM12 = 0.0f;
 139     dc->xformWorld2Wnd.eM21 = 0.0f;
 140     dc->xformWorld2Wnd.eM22 = 1.0f;
 141     dc->xformWorld2Wnd.eDx  = 0.0f;
 142     dc->xformWorld2Wnd.eDy  = 0.0f;
 143     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 144     dc->xformVport2World    = dc->xformWorld2Wnd;
 145     dc->vport2WorldValid    = TRUE;
 146     dc->BoundsRect.left     = 0;
 147     dc->BoundsRect.top      = 0;
 148     dc->BoundsRect.right    = 0;
 149     dc->BoundsRect.bottom   = 0;
 150     PATH_InitGdiPath(&dc->path);
 151
 152     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 153     {
 154         HeapFree( GetProcessHeap(), 0, dc );
 155         return NULL;
 156     }
 157     dc->nulldrv.hdc = dc->hSelf;
 158     return dc;
 159 }
 160
 161
 162
 163 /***********************************************************************
 164  *           free_dc_state
 165  */
 166 static void free_dc_state( DC *dc )
 167 {
 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     HeapFree( GetProcessHeap(), 0, dc );
 174 }
 175
 176
 177 /***********************************************************************
 178  *           free_dc_ptr
 179  */
 180 void free_dc_ptr( DC *dc )
 181 {
 182     assert( dc->refcount == 1 );
 183
 184     while (dc->physDev != &dc->nulldrv) pop_dc_driver( dc, dc->physDev );
 185     free_gdi_handle( dc->hSelf );
 186     free_dc_state( dc );
 187 }
 188
 189
 190 /***********************************************************************
 191  *           get_dc_ptr
 192  *
 193  * Retrieve a DC pointer but release the GDI lock.
 194  */
 195 DC *get_dc_ptr( HDC hdc )
 196 {
 197     DC *dc = get_dc_obj( hdc );
 198     if (!dc) return NULL;
 199
 200     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 201     {
 202         dc->thread = GetCurrentThreadId();
 203     }
 204     else if (dc->thread != GetCurrentThreadId())
 205     {
 206         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 207         GDI_ReleaseObj( hdc );
 208         return NULL;
 209     }
 210     else InterlockedIncrement( &dc->refcount );
 211
 212     GDI_ReleaseObj( hdc );
 213     return dc;
 214 }
 215
 216
 217 /***********************************************************************
 218  *           release_dc_ptr
 219  */
 220 void release_dc_ptr( DC *dc )
 221 {
 222     LONG ref;
 223
 224     dc->thread = 0;
 225     ref = InterlockedDecrement( &dc->refcount );
 226     assert( ref >= 0 );
 227     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 228 }
 229
 230
 231 /***********************************************************************
 232  *           update_dc
 233  *
 234  * Make sure the DC vis region is up to date.
 235  * This function may call up to USER so the GDI lock should _not_
 236  * be held when calling it.
 237  */
 238 void update_dc( DC *dc )
 239 {
 240     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 241         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 242 }
 243
 244
 245 /***********************************************************************
 246  *           push_dc_driver
 247  *
 248  * Push a driver on top of the DC driver stack.
 249  */
 250 void push_dc_driver( DC * dc, PHYSDEV physdev, const DC_FUNCTIONS *funcs )
 251 {
 252     physdev->funcs = funcs;
 253     physdev->next = dc->physDev;
 254     physdev->hdc = dc->hSelf;
 255     dc->physDev = physdev;
 256 }
 257
 258
 259 /***********************************************************************
 260  *           pop_dc_driver
 261  *
 262  * Pop the top driver from the DC driver stack.
 263  */
 264 void pop_dc_driver( DC * dc, PHYSDEV physdev )
 265 {
 266     assert( physdev == dc->physDev );
 267     assert( physdev != &dc->nulldrv );
 268     dc->physDev = physdev->next;
 269     physdev->funcs->pDeleteDC( physdev );
 270 }
 271
 272
 273 /***********************************************************************
 274  *           DC_DeleteObject
 275  */
 276 static BOOL DC_DeleteObject( HGDIOBJ handle )
 277 {
 278     return DeleteDC( handle );
 279 }
 280
 281
 282 /***********************************************************************
 283  *           DC_InitDC
 284  *
 285  * Setup device-specific DC values for a newly created DC.
 286  */
 287 void DC_InitDC( DC* dc )
 288 {
 289     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 290     physdev->funcs->pRealizeDefaultPalette( physdev );
 291     SetTextColor( dc->hSelf, dc->textColor );
 292     SetBkColor( dc->hSelf, dc->backgroundColor );
 293     SelectObject( dc->hSelf, dc->hPen );
 294     SelectObject( dc->hSelf, dc->hBrush );
 295     SelectObject( dc->hSelf, dc->hFont );
 296     CLIPPING_UpdateGCRegion( dc );
 297     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 298 }
 299
 300
 301 /***********************************************************************
 302  *           DC_InvertXform
 303  *
 304  * Computes the inverse of the transformation xformSrc and stores it to
 305  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 306  * is singular.
 307  */
 308 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 309 {
 310     double determinant;
 311
 312     determinant = xformSrc->eM11*xformSrc->eM22 -
 313         xformSrc->eM12*xformSrc->eM21;
 314     if (determinant > -1e-12 && determinant < 1e-12)
 315         return FALSE;
 316
 317     xformDest->eM11 =  xformSrc->eM22 / determinant;
 318     xformDest->eM12 = -xformSrc->eM12 / determinant;
 319     xformDest->eM21 = -xformSrc->eM21 / determinant;
 320     xformDest->eM22 =  xformSrc->eM11 / determinant;
 321     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 322                        xformSrc->eDy * xformDest->eM21;
 323     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 324                        xformSrc->eDy * xformDest->eM22;
 325
 326     return TRUE;
 327 }
 328
 329 /* Construct a transformation to do the window-to-viewport conversion */
 330 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 331 {
 332     double scaleX, scaleY;
 333     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 334     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 335
 336     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 337     xform->eM11 = scaleX;
 338     xform->eM12 = 0.0;
 339     xform->eM21 = 0.0;
 340     xform->eM22 = scaleY;
 341     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 342     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 343     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 344 }
 345
 346 /***********************************************************************
 347  *           DC_UpdateXforms
 348  *
 349  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 350  * fields of the specified DC by creating a transformation that
 351  * represents the current mapping mode and combining it with the DC's
 352  * world transform. This function should be called whenever the
 353  * parameters associated with the mapping mode (window and viewport
 354  * extents and origins) or the world transform change.
 355  */
 356 void DC_UpdateXforms( DC *dc )
 357 {
 358     XFORM xformWnd2Vport, oldworld2vport;
 359
 360     construct_window_to_viewport(dc, &xformWnd2Vport);
 361
 362     oldworld2vport = dc->xformWorld2Vport;
 363     /* Combine with the world transformation */
 364     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 365         &xformWnd2Vport );
 366
 367     /* Create inverse of world-to-viewport transformation */
 368     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 369         &dc->xformVport2World );
 370
 371     /* Reselect the font and pen back into the dc so that the size
 372        gets updated. */
 373     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 374         !GdiIsMetaFileDC(dc->hSelf))
 375     {
 376         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 377         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 378     }
 379 }
 380
 381
 382 /***********************************************************************
 383  *           nulldrv_SaveDC
 384  */
 385 INT CDECL nulldrv_SaveDC( PHYSDEV dev )
 386 {
 387     DC *newdc, *dc = get_nulldrv_dc( dev );
 388
 389     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc )))) return 0;
 390     newdc->flags            = dc->flags;
 391     newdc->layout           = dc->layout;
 392     newdc->hPen             = dc->hPen;
 393     newdc->hBrush           = dc->hBrush;
 394     newdc->hFont            = dc->hFont;
 395     newdc->hBitmap          = dc->hBitmap;
 396     newdc->hDevice          = dc->hDevice;
 397     newdc->hPalette         = dc->hPalette;
 398     newdc->ROPmode          = dc->ROPmode;
 399     newdc->polyFillMode     = dc->polyFillMode;
 400     newdc->stretchBltMode   = dc->stretchBltMode;
 401     newdc->relAbsMode       = dc->relAbsMode;
 402     newdc->backgroundMode   = dc->backgroundMode;
 403     newdc->backgroundColor  = dc->backgroundColor;
 404     newdc->textColor        = dc->textColor;
 405     newdc->dcBrushColor     = dc->dcBrushColor;
 406     newdc->dcPenColor       = dc->dcPenColor;
 407     newdc->brushOrgX        = dc->brushOrgX;
 408     newdc->brushOrgY        = dc->brushOrgY;
 409     newdc->mapperFlags      = dc->mapperFlags;
 410     newdc->textAlign        = dc->textAlign;
 411     newdc->charExtra        = dc->charExtra;
 412     newdc->breakExtra       = dc->breakExtra;
 413     newdc->breakRem         = dc->breakRem;
 414     newdc->MapMode          = dc->MapMode;
 415     newdc->GraphicsMode     = dc->GraphicsMode;
 416     newdc->CursPosX         = dc->CursPosX;
 417     newdc->CursPosY         = dc->CursPosY;
 418     newdc->ArcDirection     = dc->ArcDirection;
 419     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 420     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 421     newdc->xformVport2World = dc->xformVport2World;
 422     newdc->vport2WorldValid = dc->vport2WorldValid;
 423     newdc->wndOrgX          = dc->wndOrgX;
 424     newdc->wndOrgY          = dc->wndOrgY;
 425     newdc->wndExtX          = dc->wndExtX;
 426     newdc->wndExtY          = dc->wndExtY;
 427     newdc->vportOrgX        = dc->vportOrgX;
 428     newdc->vportOrgY        = dc->vportOrgY;
 429     newdc->vportExtX        = dc->vportExtX;
 430     newdc->vportExtY        = dc->vportExtY;
 431     newdc->virtual_res      = dc->virtual_res;
 432     newdc->virtual_size     = dc->virtual_size;
 433     newdc->BoundsRect       = dc->BoundsRect;
 434     newdc->gdiFont          = dc->gdiFont;
 435
 436     PATH_InitGdiPath( &newdc->path );
 437
 438     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 439
 440     newdc->hVisRgn      = 0;
 441     newdc->hClipRgn     = 0;
 442     newdc->hMetaRgn     = 0;
 443     newdc->hMetaClipRgn = 0;
 444     if (dc->hClipRgn)
 445     {
 446         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 447         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 448     }
 449     if (dc->hMetaRgn)
 450     {
 451         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 452         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 453     }
 454
 455     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 456
 457     if (!PATH_AssignGdiPath( &newdc->path, &dc->path ))
 458     {
 459         release_dc_ptr( dc );
 460         free_dc_state( newdc );
 461         return 0;
 462     }
 463
 464     newdc->saved_dc = dc->saved_dc;
 465     dc->saved_dc = newdc;
 466     return ++dc->saveLevel;
 467 }
 468
 469
 470 /***********************************************************************
 471  *           restore_dc_state
 472  */
 473 BOOL CDECL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 474 {
 475     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 476     INT save_level;
 477
 478     /* find the state level to restore */
 479
 480     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 481     if (level < 0) level = dc->saveLevel + level + 1;
 482     first_dcs = dc->saved_dc;
 483     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 484         dcs = dcs->saved_dc;
 485
 486     /* restore the state */
 487
 488     if (!PATH_AssignGdiPath( &dc->path, &dcs->path )) return FALSE;
 489
 490     dc->flags            = dcs->flags;
 491     dc->layout           = dcs->layout;
 492     dc->hDevice          = dcs->hDevice;
 493     dc->ROPmode          = dcs->ROPmode;
 494     dc->polyFillMode     = dcs->polyFillMode;
 495     dc->stretchBltMode   = dcs->stretchBltMode;
 496     dc->relAbsMode       = dcs->relAbsMode;
 497     dc->backgroundMode   = dcs->backgroundMode;
 498     dc->backgroundColor  = dcs->backgroundColor;
 499     dc->textColor        = dcs->textColor;
 500     dc->dcBrushColor     = dcs->dcBrushColor;
 501     dc->dcPenColor       = dcs->dcPenColor;
 502     dc->brushOrgX        = dcs->brushOrgX;
 503     dc->brushOrgY        = dcs->brushOrgY;
 504     dc->mapperFlags      = dcs->mapperFlags;
 505     dc->textAlign        = dcs->textAlign;
 506     dc->charExtra        = dcs->charExtra;
 507     dc->breakExtra       = dcs->breakExtra;
 508     dc->breakRem         = dcs->breakRem;
 509     dc->MapMode          = dcs->MapMode;
 510     dc->GraphicsMode     = dcs->GraphicsMode;
 511     dc->CursPosX         = dcs->CursPosX;
 512     dc->CursPosY         = dcs->CursPosY;
 513     dc->ArcDirection     = dcs->ArcDirection;
 514     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 515     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 516     dc->xformVport2World = dcs->xformVport2World;
 517     dc->vport2WorldValid = dcs->vport2WorldValid;
 518     dc->BoundsRect       = dcs->BoundsRect;
 519
 520     dc->wndOrgX          = dcs->wndOrgX;
 521     dc->wndOrgY          = dcs->wndOrgY;
 522     dc->wndExtX          = dcs->wndExtX;
 523     dc->wndExtY          = dcs->wndExtY;
 524     dc->vportOrgX        = dcs->vportOrgX;
 525     dc->vportOrgY        = dcs->vportOrgY;
 526     dc->vportExtX        = dcs->vportExtX;
 527     dc->vportExtY        = dcs->vportExtY;
 528     dc->virtual_res      = dcs->virtual_res;
 529     dc->virtual_size     = dcs->virtual_size;
 530
 531     if (dcs->hClipRgn)
 532     {
 533         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 534         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 535     }
 536     else
 537     {
 538         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 539         dc->hClipRgn = 0;
 540     }
 541     if (dcs->hMetaRgn)
 542     {
 543         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 544         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 545     }
 546     else
 547     {
 548         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 549         dc->hMetaRgn = 0;
 550     }
 551     DC_UpdateXforms( dc );
 552     CLIPPING_UpdateGCRegion( dc );
 553
 554     SelectObject( dev->hdc, dcs->hBitmap );
 555     SelectObject( dev->hdc, dcs->hBrush );
 556     SelectObject( dev->hdc, dcs->hFont );
 557     SelectObject( dev->hdc, dcs->hPen );
 558     SetBkColor( dev->hdc, dcs->backgroundColor);
 559     SetTextColor( dev->hdc, dcs->textColor);
 560     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 561
 562     dc->saved_dc  = dcs->saved_dc;
 563     dcs->saved_dc = 0;
 564     dc->saveLevel = save_level - 1;
 565
 566     /* now destroy all the saved DCs */
 567
 568     while (first_dcs)
 569     {
 570         DC *next = first_dcs->saved_dc;
 571         free_dc_state( first_dcs );
 572         first_dcs = next;
 573     }
 574     return TRUE;
 575 }
 576
 577
 578 /***********************************************************************
 579  *           SaveDC    (GDI32.@)
 580  */
 581 INT WINAPI SaveDC( HDC hdc )
 582 {
 583     DC * dc;
 584     INT ret = 0;
 585
 586     if ((dc = get_dc_ptr( hdc )))
 587     {
 588         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 589         ret = physdev->funcs->pSaveDC( physdev );
 590         release_dc_ptr( dc );
 591     }
 592     return ret;
 593 }
 594
 595
 596 /***********************************************************************
 597  *           RestoreDC    (GDI32.@)
 598  */
 599 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 600 {
 601     DC *dc;
 602     BOOL success = FALSE;
 603
 604     TRACE("%p %d\n", hdc, level );
 605     if ((dc = get_dc_ptr( hdc )))
 606     {
 607         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 608         update_dc( dc );
 609         success = physdev->funcs->pRestoreDC( physdev, level );
 610         release_dc_ptr( dc );
 611     }
 612     return success;
 613 }
 614
 615
 616 /***********************************************************************
 617  *           CreateDCW    (GDI32.@)
 618  */
 619 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 620                       const DEVMODEW *initData )
 621 {
 622     HDC hdc;
 623     DC * dc;
 624     const DC_FUNCTIONS *funcs;
 625     WCHAR buf[300];
 626
 627     GDI_CheckNotLock();
 628
 629     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 630     {
 631         if (!driver)
 632         {
 633             ERR( "no device found for %s\n", debugstr_w(device) );
 634             return 0;
 635         }
 636         strcpyW(buf, driver);
 637     }
 638
 639     if (!(funcs = DRIVER_load_driver( buf )))
 640     {
 641         ERR( "no driver found for %s\n", debugstr_w(buf) );
 642         return 0;
 643     }
 644     if (!(dc = alloc_dc_ptr( OBJ_DC ))) goto error;
 645     hdc = dc->hSelf;
 646
 647     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 648     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 649
 650     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 651           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 652
 653     if (funcs->pCreateDC)
 654     {
 655         PHYSDEV physdev;
 656         if (!funcs->pCreateDC( hdc, &physdev, buf, device, output, initData ))
 657         {
 658             WARN("creation aborted by device\n" );
 659             goto error;
 660         }
 661         push_dc_driver( dc, physdev, funcs );
 662     }
 663
 664     dc->vis_rect.left   = 0;
 665     dc->vis_rect.top    = 0;
 666     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 667     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 668     SetRectRgn(dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top, dc->vis_rect.right, dc->vis_rect.bottom);
 669
 670     DC_InitDC( dc );
 671     release_dc_ptr( dc );
 672     return hdc;
 673
 674 error:
 675     if (dc) free_dc_ptr( dc );
 676     return 0;
 677 }
 678
 679
 680 /***********************************************************************
 681  *           CreateDCA    (GDI32.@)
 682  */
 683 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 684                       const DEVMODEA *initData )
 685 {
 686     UNICODE_STRING driverW, deviceW, outputW;
 687     DEVMODEW *initDataW;
 688     HDC ret;
 689
 690     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 691     else driverW.Buffer = NULL;
 692
 693     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 694     else deviceW.Buffer = NULL;
 695
 696     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 697     else outputW.Buffer = NULL;
 698
 699     initDataW = NULL;
 700     if (initData)
 701     {
 702         /* don't convert initData for DISPLAY driver, it's not used */
 703         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 704             initDataW = GdiConvertToDevmodeW(initData);
 705     }
 706
 707     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 708
 709     RtlFreeUnicodeString(&driverW);
 710     RtlFreeUnicodeString(&deviceW);
 711     RtlFreeUnicodeString(&outputW);
 712     HeapFree(GetProcessHeap(), 0, initDataW);
 713     return ret;
 714 }
 715
 716
 717 /***********************************************************************
 718  *           CreateICA    (GDI32.@)
 719  */
 720 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 721                           const DEVMODEA* initData )
 722 {
 723       /* Nothing special yet for ICs */
 724     return CreateDCA( driver, device, output, initData );
 725 }
 726
 727
 728 /***********************************************************************
 729  *           CreateICW    (GDI32.@)
 730  */
 731 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 732                           const DEVMODEW* initData )
 733 {
 734       /* Nothing special yet for ICs */
 735     return CreateDCW( driver, device, output, initData );
 736 }
 737
 738
 739 /***********************************************************************
 740  *           CreateCompatibleDC   (GDI32.@)
 741  */
 742 HDC WINAPI CreateCompatibleDC( HDC hdc )
 743 {
 744     DC *dc, *origDC;
 745     HDC ret;
 746     const DC_FUNCTIONS *funcs = NULL;
 747     PHYSDEV physDev = NULL;
 748
 749     GDI_CheckNotLock();
 750
 751     if (hdc)
 752     {
 753         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 754         physDev = GET_DC_PHYSDEV( origDC, pCreateDC );
 755         if (physDev != &origDC->nulldrv) funcs = physDev->funcs;
 756         else physDev = NULL;
 757         release_dc_ptr( origDC );
 758     }
 759
 760     if (!funcs && !(funcs = DRIVER_get_display_driver())) return 0;
 761
 762     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) goto error;
 763
 764     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 765
 766     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 767     dc->vis_rect.left   = 0;
 768     dc->vis_rect.top    = 0;
 769     dc->vis_rect.right  = 1;
 770     dc->vis_rect.bottom = 1;
 771     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 772
 773     ret = dc->hSelf;
 774
 775     /* Pass the driver-specific physical device info into
 776      * the new DC. The driver may use this read-only info
 777      * while creating the compatible DC. */
 778     if (funcs->pCreateDC)
 779     {
 780         if (!funcs->pCreateDC( dc->hSelf, &physDev, NULL, NULL, NULL, NULL ))
 781         {
 782             WARN("creation aborted by device\n");
 783             goto error;
 784         }
 785         push_dc_driver( dc, physDev, funcs );
 786     }
 787     DC_InitDC( dc );
 788     release_dc_ptr( dc );
 789     return ret;
 790
 791 error:
 792     if (dc) free_dc_ptr( dc );
 793     return 0;
 794 }
 795
 796
 797 /***********************************************************************
 798  *           DeleteDC    (GDI32.@)
 799  */
 800 BOOL WINAPI DeleteDC( HDC hdc )
 801 {
 802     DC * dc;
 803
 804     TRACE("%p\n", hdc );
 805
 806     GDI_CheckNotLock();
 807
 808     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 809     if (dc->refcount != 1)
 810     {
 811         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 812         release_dc_ptr( dc );
 813         return FALSE;
 814     }
 815
 816     /* Call hook procedure to check whether is it OK to delete this DC */
 817     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 818     {
 819         release_dc_ptr( dc );
 820         return TRUE;
 821     }
 822
 823     while (dc->saveLevel)
 824     {
 825         DC *dcs = dc->saved_dc;
 826         dc->saved_dc = dcs->saved_dc;
 827         dc->saveLevel--;
 828         free_dc_state( dcs );
 829     }
 830
 831     SelectObject( hdc, GetStockObject(BLACK_PEN) );
 832     SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 833     SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 834     SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 835
 836     free_dc_ptr( dc );
 837     return TRUE;
 838 }
 839
 840
 841 /***********************************************************************
 842  *           ResetDCW    (GDI32.@)
 843  */
 844 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 845 {
 846     DC *dc;
 847     HDC ret = 0;
 848
 849     if ((dc = get_dc_ptr( hdc )))
 850     {
 851         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 852         ret = physdev->funcs->pResetDC( physdev, devmode );
 853         if (ret)  /* reset the visible region */
 854         {
 855             dc->dirty = 0;
 856             dc->vis_rect.left   = 0;
 857             dc->vis_rect.top    = 0;
 858             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 859             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 860             SetRectRgn( dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top,
 861                         dc->vis_rect.right, dc->vis_rect.bottom );
 862             CLIPPING_UpdateGCRegion( dc );
 863         }
 864         release_dc_ptr( dc );
 865     }
 866     return ret;
 867 }
 868
 869
 870 /***********************************************************************
 871  *           ResetDCA    (GDI32.@)
 872  */
 873 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 874 {
 875     DEVMODEW *devmodeW;
 876     HDC ret;
 877
 878     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 879     else devmodeW = NULL;
 880
 881     ret = ResetDCW(hdc, devmodeW);
 882
 883     HeapFree(GetProcessHeap(), 0, devmodeW);
 884     return ret;
 885 }
 886
 887
 888 /***********************************************************************
 889  *           GetDeviceCaps    (GDI32.@)
 890  */
 891 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 892 {
 893     DC *dc;
 894     INT ret = 0;
 895
 896     if ((dc = get_dc_ptr( hdc )))
 897     {
 898         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 899         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 900         release_dc_ptr( dc );
 901     }
 902     return ret;
 903 }
 904
 905
 906 /***********************************************************************
 907  *              GetBkColor (GDI32.@)
 908  */
 909 COLORREF WINAPI GetBkColor( HDC hdc )
 910 {
 911     COLORREF ret = 0;
 912     DC * dc = get_dc_ptr( hdc );
 913     if (dc)
 914     {
 915         ret = dc->backgroundColor;
 916         release_dc_ptr( dc );
 917     }
 918     return ret;
 919 }
 920
 921
 922 /***********************************************************************
 923  *           SetBkColor    (GDI32.@)
 924  */
 925 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 926 {
 927     COLORREF ret = CLR_INVALID;
 928     DC * dc = get_dc_ptr( hdc );
 929
 930     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 931
 932     if (dc)
 933     {
 934         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 935         color = physdev->funcs->pSetBkColor( physdev, color );
 936         if (color != CLR_INVALID)
 937         {
 938             ret = dc->backgroundColor;
 939             dc->backgroundColor = color;
 940         }
 941         release_dc_ptr( dc );
 942     }
 943     return ret;
 944 }
 945
 946
 947 /***********************************************************************
 948  *              GetTextColor (GDI32.@)
 949  */
 950 COLORREF WINAPI GetTextColor( HDC hdc )
 951 {
 952     COLORREF ret = 0;
 953     DC * dc = get_dc_ptr( hdc );
 954     if (dc)
 955     {
 956         ret = dc->textColor;
 957         release_dc_ptr( dc );
 958     }
 959     return ret;
 960 }
 961
 962
 963 /***********************************************************************
 964  *           SetTextColor    (GDI32.@)
 965  */
 966 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 967 {
 968     COLORREF ret = CLR_INVALID;
 969     DC * dc = get_dc_ptr( hdc );
 970
 971     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 972
 973     if (dc)
 974     {
 975         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 976         color = physdev->funcs->pSetTextColor( physdev, color );
 977         if (color != CLR_INVALID)
 978         {
 979             ret = dc->textColor;
 980             dc->textColor = color;
 981         }
 982         release_dc_ptr( dc );
 983     }
 984     return ret;
 985 }
 986
 987
 988 /***********************************************************************
 989  *              GetTextAlign (GDI32.@)
 990  */
 991 UINT WINAPI GetTextAlign( HDC hdc )
 992 {
 993     UINT ret = 0;
 994     DC * dc = get_dc_ptr( hdc );
 995     if (dc)
 996     {
 997         ret = dc->textAlign;
 998         release_dc_ptr( dc );
 999     }
1000     return ret;
1001 }
1002
1003
1004 /***********************************************************************
1005  *           SetTextAlign    (GDI32.@)
1006  */
1007 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1008 {
1009     UINT ret = GDI_ERROR;
1010     DC *dc = get_dc_ptr( hdc );
1011
1012     TRACE("hdc=%p align=%d\n", hdc, align);
1013
1014     if (dc)
1015     {
1016         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
1017         align = physdev->funcs->pSetTextAlign( physdev, align );
1018         if (align != GDI_ERROR)
1019         {
1020             ret = dc->textAlign;
1021             dc->textAlign = align;
1022         }
1023         release_dc_ptr( dc );
1024     }
1025     return ret;
1026 }
1027
1028 /***********************************************************************
1029  *           GetDCOrgEx  (GDI32.@)
1030  */
1031 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1032 {
1033     DC * dc;
1034
1035     if (!lpp) return FALSE;
1036     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1037     lpp->x = dc->vis_rect.left;
1038     lpp->y = dc->vis_rect.top;
1039     release_dc_ptr( dc );
1040     return TRUE;
1041 }
1042
1043
1044 /***********************************************************************
1045  *              GetGraphicsMode (GDI32.@)
1046  */
1047 INT WINAPI GetGraphicsMode( HDC hdc )
1048 {
1049     INT ret = 0;
1050     DC * dc = get_dc_ptr( hdc );
1051     if (dc)
1052     {
1053         ret = dc->GraphicsMode;
1054         release_dc_ptr( dc );
1055     }
1056     return ret;
1057 }
1058
1059
1060 /***********************************************************************
1061  *           SetGraphicsMode    (GDI32.@)
1062  */
1063 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1064 {
1065     INT ret = 0;
1066     DC *dc = get_dc_ptr( hdc );
1067
1068     /* One would think that setting the graphics mode to GM_COMPATIBLE
1069      * would also reset the world transformation matrix to the unity
1070      * matrix. However, in Windows, this is not the case. This doesn't
1071      * make a lot of sense to me, but that's the way it is.
1072      */
1073     if (!dc) return 0;
1074     if ((mode > 0) && (mode <= GM_LAST))
1075     {
1076         ret = dc->GraphicsMode;
1077         dc->GraphicsMode = mode;
1078     }
1079     release_dc_ptr( dc );
1080     return ret;
1081 }
1082
1083
1084 /***********************************************************************
1085  *              GetArcDirection (GDI32.@)
1086  */
1087 INT WINAPI GetArcDirection( HDC hdc )
1088 {
1089     INT ret = 0;
1090     DC * dc = get_dc_ptr( hdc );
1091     if (dc)
1092     {
1093         ret = dc->ArcDirection;
1094         release_dc_ptr( dc );
1095     }
1096     return ret;
1097 }
1098
1099
1100 /***********************************************************************
1101  *           SetArcDirection    (GDI32.@)
1102  */
1103 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1104 {
1105     DC * dc;
1106     INT ret = 0;
1107
1108     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1109     {
1110         SetLastError(ERROR_INVALID_PARAMETER);
1111         return 0;
1112     }
1113
1114     if ((dc = get_dc_ptr( hdc )))
1115     {
1116         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1117         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1118         if (dir)
1119         {
1120             ret = dc->ArcDirection;
1121             dc->ArcDirection = dir;
1122         }
1123         release_dc_ptr( dc );
1124     }
1125     return ret;
1126 }
1127
1128
1129 /***********************************************************************
1130  *           GetWorldTransform    (GDI32.@)
1131  */
1132 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1133 {
1134     DC * dc;
1135     if (!xform) return FALSE;
1136     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1137     *xform = dc->xformWorld2Wnd;
1138     release_dc_ptr( dc );
1139     return TRUE;
1140 }
1141
1142
1143 /***********************************************************************
1144  *           GetTransform    (GDI32.@)
1145  *
1146  * Undocumented
1147  *
1148  * Returns one of the co-ordinate space transforms
1149  *
1150  * PARAMS
1151  *    hdc   [I] Device context.
1152  *    which [I] Which xform to return:
1153  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1154  *                  0x304 Page -> Device transform (the mapping mode transform).
1155  *                  0x204 World -> Device transform (the combination of the above two).
1156  *                  0x402 Device -> World transform (the inversion of the above).
1157  *    xform [O] The xform.
1158  *
1159  */
1160 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1161 {
1162     BOOL ret = TRUE;
1163     DC *dc = get_dc_ptr( hdc );
1164     if (!dc) return FALSE;
1165
1166     switch(which)
1167     {
1168     case 0x203:
1169         *xform = dc->xformWorld2Wnd;
1170         break;
1171
1172     case 0x304:
1173         construct_window_to_viewport(dc, xform);
1174         break;
1175
1176     case 0x204:
1177         *xform = dc->xformWorld2Vport;
1178         break;
1179
1180     case 0x402:
1181         *xform = dc->xformVport2World;
1182         break;
1183
1184     default:
1185         FIXME("Unknown code %x\n", which);
1186         ret = FALSE;
1187     }
1188
1189     release_dc_ptr( dc );
1190     return ret;
1191 }
1192
1193
1194 /****************************************************************************
1195  * CombineTransform [GDI32.@]
1196  * Combines two transformation matrices.
1197  *
1198  * PARAMS
1199  *    xformResult [O] Stores the result of combining the two matrices
1200  *    xform1      [I] Specifies the first matrix to apply
1201  *    xform2      [I] Specifies the second matrix to apply
1202  *
1203  * REMARKS
1204  *    The same matrix can be passed in for more than one of the parameters.
1205  *
1206  * RETURNS
1207  *  Success: TRUE.
1208  *  Failure: FALSE. Use GetLastError() to determine the cause.
1209  */
1210 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1211     const XFORM *xform2 )
1212 {
1213     XFORM xformTemp;
1214
1215     /* Check for illegal parameters */
1216     if (!xformResult || !xform1 || !xform2)
1217         return FALSE;
1218
1219     /* Create the result in a temporary XFORM, since xformResult may be
1220      * equal to xform1 or xform2 */
1221     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1222                      xform1->eM12 * xform2->eM21;
1223     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1224                      xform1->eM12 * xform2->eM22;
1225     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1226                      xform1->eM22 * xform2->eM21;
1227     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1228                      xform1->eM22 * xform2->eM22;
1229     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1230                      xform1->eDy  * xform2->eM21 +
1231                      xform2->eDx;
1232     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1233                      xform1->eDy  * xform2->eM22 +
1234                      xform2->eDy;
1235
1236     /* Copy the result to xformResult */
1237     *xformResult = xformTemp;
1238
1239     return TRUE;
1240 }
1241
1242
1243 /***********************************************************************
1244  *           SetDCHook   (GDI32.@)
1245  *
1246  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1247  */
1248 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1249 {
1250     DC *dc = get_dc_ptr( hdc );
1251
1252     if (!dc) return FALSE;
1253
1254     dc->dwHookData = dwHookData;
1255     dc->hookProc = hookProc;
1256     release_dc_ptr( dc );
1257     return TRUE;
1258 }
1259
1260
1261 /***********************************************************************
1262  *           GetDCHook   (GDI32.@)
1263  *
1264  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1265  */
1266 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1267 {
1268     DC *dc = get_dc_ptr( hdc );
1269     DWORD_PTR ret;
1270
1271     if (!dc) return 0;
1272     if (proc) *proc = dc->hookProc;
1273     ret = dc->dwHookData;
1274     release_dc_ptr( dc );
1275     return ret;
1276 }
1277
1278
1279 /***********************************************************************
1280  *           SetHookFlags   (GDI32.@)
1281  *
1282  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1283  */
1284 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1285 {
1286     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1287     LONG ret = 0;
1288
1289     if (!dc) return 0;
1290
1291     /* "Undocumented Windows" info is slightly confusing. */
1292
1293     TRACE("hDC %p, flags %04x\n",hdc,flags);
1294
1295     if (flags & DCHF_INVALIDATEVISRGN)
1296         ret = InterlockedExchange( &dc->dirty, 1 );
1297     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1298         ret = InterlockedExchange( &dc->dirty, 0 );
1299
1300     GDI_ReleaseObj( hdc );
1301     return ret;
1302 }
1303
1304 /***********************************************************************
1305  *           SetICMMode    (GDI32.@)
1306  */
1307 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1308 {
1309 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1310     if (iEnableICM == ICM_OFF) return ICM_OFF;
1311     if (iEnableICM == ICM_ON) return 0;
1312     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1313     return 0;
1314 }
1315
1316 /***********************************************************************
1317  *           GetDeviceGammaRamp    (GDI32.@)
1318  */
1319 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1320 {
1321     BOOL ret = FALSE;
1322     DC *dc = get_dc_ptr( hDC );
1323
1324     if( dc )
1325     {
1326         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1327         ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1328         release_dc_ptr( dc );
1329     }
1330     return ret;
1331 }
1332
1333 /***********************************************************************
1334  *           SetDeviceGammaRamp    (GDI32.@)
1335  */
1336 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1337 {
1338     BOOL ret = FALSE;
1339     DC *dc = get_dc_ptr( hDC );
1340
1341     if( dc )
1342     {
1343         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1344         ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1345         release_dc_ptr( dc );
1346     }
1347     return ret;
1348 }
1349
1350 /***********************************************************************
1351  *           GetColorSpace    (GDI32.@)
1352  */
1353 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1354 {
1355 /*FIXME    Need to to whatever GetColorSpace actually does */
1356     return 0;
1357 }
1358
1359 /***********************************************************************
1360  *           CreateColorSpaceA    (GDI32.@)
1361  */
1362 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1363 {
1364   FIXME( "stub\n" );
1365   return 0;
1366 }
1367
1368 /***********************************************************************
1369  *           CreateColorSpaceW    (GDI32.@)
1370  */
1371 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1372 {
1373   FIXME( "stub\n" );
1374   return 0;
1375 }
1376
1377 /***********************************************************************
1378  *           DeleteColorSpace     (GDI32.@)
1379  */
1380 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1381 {
1382   FIXME( "stub\n" );
1383
1384   return TRUE;
1385 }
1386
1387 /***********************************************************************
1388  *           SetColorSpace     (GDI32.@)
1389  */
1390 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1391 {
1392   FIXME( "stub\n" );
1393
1394   return hColorSpace;
1395 }
1396
1397 /***********************************************************************
1398  *           GetBoundsRect    (GDI32.@)
1399  */
1400 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1401 {
1402     UINT ret;
1403     DC *dc = get_dc_ptr( hdc );
1404
1405     if ( !dc ) return 0;
1406
1407     if (rect)
1408     {
1409         *rect = dc->BoundsRect;
1410         ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1411     }
1412     else
1413         ret = 0;
1414
1415     if (flags & DCB_RESET)
1416     {
1417         dc->BoundsRect.left   = 0;
1418         dc->BoundsRect.top    = 0;
1419         dc->BoundsRect.right  = 0;
1420         dc->BoundsRect.bottom = 0;
1421         dc->flags &= ~DC_BOUNDS_SET;
1422     }
1423     release_dc_ptr( dc );
1424     return ret;
1425 }
1426
1427
1428 /***********************************************************************
1429  *           SetBoundsRect    (GDI32.@)
1430  */
1431 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1432 {
1433     UINT ret;
1434     DC *dc;
1435
1436     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1437     if (!(dc = get_dc_ptr( hdc ))) return 0;
1438
1439     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1440           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1441
1442     if (flags & DCB_RESET)
1443     {
1444         dc->BoundsRect.left   = 0;
1445         dc->BoundsRect.top    = 0;
1446         dc->BoundsRect.right  = 0;
1447         dc->BoundsRect.bottom = 0;
1448         dc->flags &= ~DC_BOUNDS_SET;
1449     }
1450
1451     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1452     {
1453         if (dc->flags & DC_BOUNDS_SET)
1454         {
1455             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1456             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1457             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1458             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1459         }
1460         else
1461         {
1462             dc->BoundsRect = *rect;
1463             dc->flags |= DC_BOUNDS_SET;
1464         }
1465     }
1466
1467     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1468     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1469
1470     release_dc_ptr( dc );
1471     return ret;
1472 }
1473
1474
1475 /***********************************************************************
1476  *              GetRelAbs               (GDI32.@)
1477  */
1478 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1479 {
1480     INT ret = 0;
1481     DC *dc = get_dc_ptr( hdc );
1482     if (dc)
1483     {
1484         ret = dc->relAbsMode;
1485         release_dc_ptr( dc );
1486     }
1487     return ret;
1488 }
1489
1490
1491
1492
1493 /***********************************************************************
1494  *              GetBkMode (GDI32.@)
1495  */
1496 INT WINAPI GetBkMode( HDC hdc )
1497 {
1498     INT ret = 0;
1499     DC * dc = get_dc_ptr( hdc );
1500     if (dc)
1501     {
1502         ret = dc->backgroundMode;
1503         release_dc_ptr( dc );
1504     }
1505     return ret;
1506 }
1507
1508
1509 /***********************************************************************
1510  *              SetBkMode (GDI32.@)
1511  */
1512 INT WINAPI SetBkMode( HDC hdc, INT mode )
1513 {
1514     INT ret = 0;
1515     DC *dc;
1516
1517     if ((mode <= 0) || (mode > BKMODE_LAST))
1518     {
1519         SetLastError(ERROR_INVALID_PARAMETER);
1520         return 0;
1521     }
1522     if ((dc = get_dc_ptr( hdc )))
1523     {
1524         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1525         mode = physdev->funcs->pSetBkMode( physdev, mode );
1526         if (mode)
1527         {
1528             ret = dc->backgroundMode;
1529             dc->backgroundMode = mode;
1530         }
1531         release_dc_ptr( dc );
1532     }
1533     return ret;
1534 }
1535
1536
1537 /***********************************************************************
1538  *              GetROP2 (GDI32.@)
1539  */
1540 INT WINAPI GetROP2( HDC hdc )
1541 {
1542     INT ret = 0;
1543     DC * dc = get_dc_ptr( hdc );
1544     if (dc)
1545     {
1546         ret = dc->ROPmode;
1547         release_dc_ptr( dc );
1548     }
1549     return ret;
1550 }
1551
1552
1553 /***********************************************************************
1554  *              SetROP2 (GDI32.@)
1555  */
1556 INT WINAPI SetROP2( HDC hdc, INT mode )
1557 {
1558     INT ret = 0;
1559     DC *dc;
1560
1561     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1562     {
1563         SetLastError(ERROR_INVALID_PARAMETER);
1564         return 0;
1565     }
1566     if ((dc = get_dc_ptr( hdc )))
1567     {
1568         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1569         mode = physdev->funcs->pSetROP2( physdev, mode );
1570         if (mode)
1571         {
1572             ret = dc->ROPmode;
1573             dc->ROPmode = mode;
1574         }
1575         release_dc_ptr( dc );
1576     }
1577     return ret;
1578 }
1579
1580
1581 /***********************************************************************
1582  *              SetRelAbs (GDI32.@)
1583  */
1584 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1585 {
1586     INT ret = 0;
1587     DC *dc;
1588
1589     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1590     {
1591         SetLastError(ERROR_INVALID_PARAMETER);
1592         return 0;
1593     }
1594     if ((dc = get_dc_ptr( hdc )))
1595     {
1596         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1597         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1598         if (mode)
1599         {
1600             ret = dc->relAbsMode;
1601             dc->relAbsMode = mode;
1602         }
1603         release_dc_ptr( dc );
1604     }
1605     return ret;
1606 }
1607
1608
1609 /***********************************************************************
1610  *              GetPolyFillMode (GDI32.@)
1611  */
1612 INT WINAPI GetPolyFillMode( HDC hdc )
1613 {
1614     INT ret = 0;
1615     DC * dc = get_dc_ptr( hdc );
1616     if (dc)
1617     {
1618         ret = dc->polyFillMode;
1619         release_dc_ptr( dc );
1620     }
1621     return ret;
1622 }
1623
1624
1625 /***********************************************************************
1626  *              SetPolyFillMode (GDI32.@)
1627  */
1628 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1629 {
1630     INT ret = 0;
1631     DC *dc;
1632
1633     if ((mode <= 0) || (mode > POLYFILL_LAST))
1634     {
1635         SetLastError(ERROR_INVALID_PARAMETER);
1636         return 0;
1637     }
1638     if ((dc = get_dc_ptr( hdc )))
1639     {
1640         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1641         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1642         if (mode)
1643         {
1644             ret = dc->polyFillMode;
1645             dc->polyFillMode = mode;
1646         }
1647         release_dc_ptr( dc );
1648     }
1649     return ret;
1650 }
1651
1652
1653 /***********************************************************************
1654  *              GetStretchBltMode (GDI32.@)
1655  */
1656 INT WINAPI GetStretchBltMode( HDC hdc )
1657 {
1658     INT ret = 0;
1659     DC * dc = get_dc_ptr( hdc );
1660     if (dc)
1661     {
1662         ret = dc->stretchBltMode;
1663         release_dc_ptr( dc );
1664     }
1665     return ret;
1666 }
1667
1668
1669 /***********************************************************************
1670  *              SetStretchBltMode (GDI32.@)
1671  */
1672 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1673 {
1674     INT ret = 0;
1675     DC *dc;
1676
1677     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1678     {
1679         SetLastError(ERROR_INVALID_PARAMETER);
1680         return 0;
1681     }
1682     if ((dc = get_dc_ptr( hdc )))
1683     {
1684         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1685         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1686         if (mode)
1687         {
1688             ret = dc->stretchBltMode;
1689             dc->stretchBltMode = mode;
1690         }
1691         release_dc_ptr( dc );
1692     }
1693     return ret;
1694 }
1695
1696
1697 /***********************************************************************
1698  *              GetMapMode (GDI32.@)
1699  */
1700 INT WINAPI GetMapMode( HDC hdc )
1701 {
1702     INT ret = 0;
1703     DC * dc = get_dc_ptr( hdc );
1704     if (dc)
1705     {
1706         ret = dc->MapMode;
1707         release_dc_ptr( dc );
1708     }
1709     return ret;
1710 }
1711
1712
1713 /***********************************************************************
1714  *              GetBrushOrgEx (GDI32.@)
1715  */
1716 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1717 {
1718     DC * dc = get_dc_ptr( hdc );
1719     if (!dc) return FALSE;
1720     pt->x = dc->brushOrgX;
1721     pt->y = dc->brushOrgY;
1722     release_dc_ptr( dc );
1723     return TRUE;
1724 }
1725
1726
1727 /***********************************************************************
1728  *              GetCurrentPositionEx (GDI32.@)
1729  */
1730 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1731 {
1732     DC * dc = get_dc_ptr( hdc );
1733     if (!dc) return FALSE;
1734     pt->x = dc->CursPosX;
1735     pt->y = dc->CursPosY;
1736     release_dc_ptr( dc );
1737     return TRUE;
1738 }
1739
1740
1741 /***********************************************************************
1742  *              GetViewportExtEx (GDI32.@)
1743  */
1744 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1745 {
1746     DC * dc = get_dc_ptr( hdc );
1747     if (!dc) return FALSE;
1748     size->cx = dc->vportExtX;
1749     size->cy = dc->vportExtY;
1750     release_dc_ptr( dc );
1751     return TRUE;
1752 }
1753
1754
1755 /***********************************************************************
1756  *              GetViewportOrgEx (GDI32.@)
1757  */
1758 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1759 {
1760     DC * dc = get_dc_ptr( hdc );
1761     if (!dc) return FALSE;
1762     pt->x = dc->vportOrgX;
1763     pt->y = dc->vportOrgY;
1764     release_dc_ptr( dc );
1765     return TRUE;
1766 }
1767
1768
1769 /***********************************************************************
1770  *              GetWindowExtEx (GDI32.@)
1771  */
1772 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1773 {
1774     DC * dc = get_dc_ptr( hdc );
1775     if (!dc) return FALSE;
1776     size->cx = dc->wndExtX;
1777     size->cy = dc->wndExtY;
1778     release_dc_ptr( dc );
1779     return TRUE;
1780 }
1781
1782
1783 /***********************************************************************
1784  *              GetWindowOrgEx (GDI32.@)
1785  */
1786 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1787 {
1788     DC * dc = get_dc_ptr( hdc );
1789     if (!dc) return FALSE;
1790     pt->x = dc->wndOrgX;
1791     pt->y = dc->wndOrgY;
1792     release_dc_ptr( dc );
1793     return TRUE;
1794 }
1795
1796
1797 /***********************************************************************
1798  *           GetLayout    (GDI32.@)
1799  *
1800  * Gets left->right or right->left text layout flags of a dc.
1801  *
1802  */
1803 DWORD WINAPI GetLayout(HDC hdc)
1804 {
1805     DWORD layout = GDI_ERROR;
1806
1807     DC * dc = get_dc_ptr( hdc );
1808     if (dc)
1809     {
1810         layout = dc->layout;
1811         release_dc_ptr( dc );
1812     }
1813
1814     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1815
1816     return layout;
1817 }
1818
1819 /***********************************************************************
1820  *           SetLayout    (GDI32.@)
1821  *
1822  * Sets left->right or right->left text layout flags of a dc.
1823  *
1824  */
1825 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1826 {
1827     DWORD oldlayout = GDI_ERROR;
1828
1829     DC * dc = get_dc_ptr( hdc );
1830     if (dc)
1831     {
1832         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1833         layout = physdev->funcs->pSetLayout( physdev, layout );
1834         if (layout != GDI_ERROR)
1835         {
1836             oldlayout = dc->layout;
1837             dc->layout = layout;
1838             if (layout != oldlayout)
1839             {
1840                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1841                 DC_UpdateXforms( dc );
1842             }
1843         }
1844         release_dc_ptr( dc );
1845     }
1846
1847     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1848
1849     return oldlayout;
1850 }
1851
1852 /***********************************************************************
1853  *           GetDCBrushColor    (GDI32.@)
1854  */
1855 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1856 {
1857     DC *dc;
1858     COLORREF dcBrushColor = CLR_INVALID;
1859
1860     TRACE("hdc(%p)\n", hdc);
1861
1862     dc = get_dc_ptr( hdc );
1863     if (dc)
1864     {
1865         dcBrushColor = dc->dcBrushColor;
1866         release_dc_ptr( dc );
1867     }
1868
1869     return dcBrushColor;
1870 }
1871
1872 /***********************************************************************
1873  *           SetDCBrushColor    (GDI32.@)
1874  */
1875 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1876 {
1877     DC *dc;
1878     COLORREF oldClr = CLR_INVALID;
1879
1880     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1881
1882     dc = get_dc_ptr( hdc );
1883     if (dc)
1884     {
1885         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1886         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1887         if (crColor != CLR_INVALID)
1888         {
1889             oldClr = dc->dcBrushColor;
1890             dc->dcBrushColor = crColor;
1891         }
1892         release_dc_ptr( dc );
1893     }
1894
1895     return oldClr;
1896 }
1897
1898 /***********************************************************************
1899  *           GetDCPenColor    (GDI32.@)
1900  */
1901 COLORREF WINAPI GetDCPenColor(HDC hdc)
1902 {
1903     DC *dc;
1904     COLORREF dcPenColor = CLR_INVALID;
1905
1906     TRACE("hdc(%p)\n", hdc);
1907
1908     dc = get_dc_ptr( hdc );
1909     if (dc)
1910     {
1911         dcPenColor = dc->dcPenColor;
1912         release_dc_ptr( dc );
1913     }
1914
1915     return dcPenColor;
1916 }
1917
1918 /***********************************************************************
1919  *           SetDCPenColor    (GDI32.@)
1920  */
1921 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
1922 {
1923     DC *dc;
1924     COLORREF oldClr = CLR_INVALID;
1925
1926     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1927
1928     dc = get_dc_ptr( hdc );
1929     if (dc)
1930     {
1931         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
1932         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
1933         if (crColor != CLR_INVALID)
1934         {
1935             oldClr = dc->dcPenColor;
1936             dc->dcPenColor = crColor;
1937         }
1938         release_dc_ptr( dc );
1939     }
1940
1941     return oldClr;
1942 }
1943
1944 /***********************************************************************
1945  *           CancelDC    (GDI32.@)
1946  */
1947 BOOL WINAPI CancelDC(HDC hdc)
1948 {
1949     FIXME("stub\n");
1950     return TRUE;
1951 }
1952
1953 /*******************************************************************
1954  *      GetMiterLimit [GDI32.@]
1955  *
1956  *
1957  */
1958 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
1959 {
1960     BOOL bRet = FALSE;
1961     DC *dc;
1962
1963     TRACE("(%p,%p)\n", hdc, peLimit);
1964
1965     dc = get_dc_ptr( hdc );
1966     if (dc)
1967     {
1968         if (peLimit)
1969             *peLimit = dc->miterLimit;
1970
1971         release_dc_ptr( dc );
1972         bRet = TRUE;
1973     }
1974     return bRet;
1975 }
1976
1977 /*******************************************************************
1978  *      SetMiterLimit [GDI32.@]
1979  *
1980  *
1981  */
1982 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
1983 {
1984     BOOL bRet = FALSE;
1985     DC *dc;
1986
1987     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
1988
1989     dc = get_dc_ptr( hdc );
1990     if (dc)
1991     {
1992         if (peOldLimit)
1993             *peOldLimit = dc->miterLimit;
1994         dc->miterLimit = eNewLimit;
1995         release_dc_ptr( dc );
1996         bRet = TRUE;
1997     }
1998     return bRet;
1999 }
2000
2001 /*******************************************************************
2002  *      GdiIsMetaPrintDC [GDI32.@]
2003  */
2004 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2005 {
2006     FIXME("%p\n", hdc);
2007     return FALSE;
2008 }
2009
2010 /*******************************************************************
2011  *      GdiIsMetaFileDC [GDI32.@]
2012  */
2013 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2014 {
2015     TRACE("%p\n", hdc);
2016
2017     switch( GetObjectType( hdc ) )
2018     {
2019     case OBJ_METADC:
2020     case OBJ_ENHMETADC:
2021         return TRUE;
2022     }
2023     return FALSE;
2024 }
2025
2026 /*******************************************************************
2027  *      GdiIsPlayMetafileDC [GDI32.@]
2028  */
2029 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2030 {
2031     FIXME("%p\n", hdc);
2032     return FALSE;
2033 }