dlls/gdi32/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "winerror.h"
  33 #include "wownt32.h"
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  39
  40 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  41
  42 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj );
  43
  44 static const struct gdi_obj_funcs dc_funcs =
  45 {
  46     NULL,             /* pSelectObject */
  47     NULL,             /* pGetObject16 */
  48     NULL,             /* pGetObjectA */
  49     NULL,             /* pGetObjectW */
  50     NULL,             /* pUnrealizeObject */
  51     DC_DeleteObject   /* pDeleteObject */
  52 };
  53
  54
  55 static inline DC *get_dc_obj( HDC hdc )
  56 {
  57     DC *dc = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
  58     if (!dc) return NULL;
  59
  60     if ((GDIMAGIC(dc->header.wMagic) != DC_MAGIC) &&
  61         (GDIMAGIC(dc->header.wMagic) != MEMORY_DC_MAGIC) &&
  62         (GDIMAGIC(dc->header.wMagic) != METAFILE_DC_MAGIC) &&
  63         (GDIMAGIC(dc->header.wMagic) != ENHMETAFILE_DC_MAGIC))
  64     {
  65         GDI_ReleaseObj( hdc );
  66         SetLastError( ERROR_INVALID_HANDLE );
  67         dc = NULL;
  68     }
  69     return dc;
  70 }
  71
  72
  73 /***********************************************************************
  74  *           alloc_dc_ptr
  75  */
  76 DC *alloc_dc_ptr( const DC_FUNCTIONS *funcs, WORD magic )
  77 {
  78     HDC hdc;
  79     DC *dc;
  80
  81     if (!(dc = GDI_AllocObject( sizeof(*dc), magic, (HGDIOBJ*)&hdc, &dc_funcs ))) return NULL;
  82
  83     dc->hSelf               = hdc;
  84     dc->funcs               = funcs;
  85     dc->physDev             = NULL;
  86     dc->savedFuncs          = NULL;
  87     dc->savedPhysDev        = NULL;
  88     dc->thread              = GetCurrentThreadId();
  89     dc->refcount            = 1;
  90     dc->dirty               = 0;
  91     dc->saveLevel           = 0;
  92     dc->saved_dc            = 0;
  93     dc->dwHookData          = 0;
  94     dc->hookProc            = NULL;
  95     dc->hookThunk           = NULL;
  96     dc->wndOrgX             = 0;
  97     dc->wndOrgY             = 0;
  98     dc->wndExtX             = 1;
  99     dc->wndExtY             = 1;
 100     dc->vportOrgX           = 0;
 101     dc->vportOrgY           = 0;
 102     dc->vportExtX           = 1;
 103     dc->vportExtY           = 1;
 104     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
 105     dc->flags               = 0;
 106     dc->layout              = 0;
 107     dc->hClipRgn            = 0;
 108     dc->hMetaRgn            = 0;
 109     dc->hMetaClipRgn        = 0;
 110     dc->hVisRgn             = 0;
 111     dc->hPen                = GetStockObject( BLACK_PEN );
 112     dc->hBrush              = GetStockObject( WHITE_BRUSH );
 113     dc->hFont               = GetStockObject( SYSTEM_FONT );
 114     dc->hBitmap             = 0;
 115     dc->hDevice             = 0;
 116     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 117     dc->gdiFont             = 0;
 118     dc->ROPmode             = R2_COPYPEN;
 119     dc->polyFillMode        = ALTERNATE;
 120     dc->stretchBltMode      = BLACKONWHITE;
 121     dc->relAbsMode          = ABSOLUTE;
 122     dc->backgroundMode      = OPAQUE;
 123     dc->backgroundColor     = RGB( 255, 255, 255 );
 124     dc->dcBrushColor        = RGB( 255, 255, 255 );
 125     dc->dcPenColor          = RGB( 0, 0, 0 );
 126     dc->textColor           = RGB( 0, 0, 0 );
 127     dc->brushOrgX           = 0;
 128     dc->brushOrgY           = 0;
 129     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 130     dc->charExtra           = 0;
 131     dc->breakExtra          = 0;
 132     dc->breakRem            = 0;
 133     dc->MapMode             = MM_TEXT;
 134     dc->GraphicsMode        = GM_COMPATIBLE;
 135     dc->pAbortProc          = NULL;
 136     dc->CursPosX            = 0;
 137     dc->CursPosY            = 0;
 138     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 139     dc->xformWorld2Wnd.eM11 = 1.0f;
 140     dc->xformWorld2Wnd.eM12 = 0.0f;
 141     dc->xformWorld2Wnd.eM21 = 0.0f;
 142     dc->xformWorld2Wnd.eM22 = 1.0f;
 143     dc->xformWorld2Wnd.eDx  = 0.0f;
 144     dc->xformWorld2Wnd.eDy  = 0.0f;
 145     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 146     dc->xformVport2World    = dc->xformWorld2Wnd;
 147     dc->vport2WorldValid    = TRUE;
 148     dc->BoundsRect.left     = 0;
 149     dc->BoundsRect.top      = 0;
 150     dc->BoundsRect.right    = 0;
 151     dc->BoundsRect.bottom   = 0;
 152     dc->saved_visrgn        = NULL;
 153     PATH_InitGdiPath(&dc->path);
 154     GDI_ReleaseObj( dc->hSelf );
 155     return dc;
 156 }
 157
 158
 159
 160 /***********************************************************************
 161  *           DC_GetDCPtr
 162  */
 163 DC *DC_GetDCPtr( HDC hdc )
 164 {
 165     DC *dc = get_dc_obj( hdc );
 166     if (!dc) return NULL;
 167
 168     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 169     {
 170         dc->thread = GetCurrentThreadId();
 171     }
 172     else if (dc->thread != GetCurrentThreadId())
 173     {
 174         GDI_ReleaseObj( hdc );
 175         SetLastError( ERROR_ACCESS_DENIED );
 176         return NULL;
 177     }
 178     else InterlockedIncrement( &dc->refcount );
 179
 180     return dc;
 181 }
 182
 183
 184 /***********************************************************************
 185  *           DC_ReleaseDCPtr
 186  */
 187 void DC_ReleaseDCPtr( DC *dc )
 188 {
 189     release_dc_ptr( dc );
 190     GDI_ReleaseObj( dc->hSelf );
 191 }
 192
 193
 194 /***********************************************************************
 195  *           free_dc_ptr
 196  */
 197 BOOL free_dc_ptr( DC *dc )
 198 {
 199     assert( dc->refcount == 1 );
 200     /* grab the gdi lock again */
 201     if (!GDI_GetObjPtr( dc->hSelf, MAGIC_DONTCARE )) return FALSE;  /* shouldn't happen */
 202     return GDI_FreeObject( dc->hSelf, dc );
 203 }
 204
 205
 206 /***********************************************************************
 207  *           get_dc_ptr
 208  *
 209  * Retrieve a DC pointer but release the GDI lock.
 210  */
 211 DC *get_dc_ptr( HDC hdc )
 212 {
 213     DC *dc = get_dc_obj( hdc );
 214     if (!dc) return NULL;
 215
 216     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 217     {
 218         dc->thread = GetCurrentThreadId();
 219     }
 220     else if (dc->thread != GetCurrentThreadId())
 221     {
 222         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 223         GDI_ReleaseObj( hdc );
 224         return NULL;
 225     }
 226     else InterlockedIncrement( &dc->refcount );
 227
 228     GDI_ReleaseObj( hdc );
 229     return dc;
 230 }
 231
 232
 233 /***********************************************************************
 234  *           release_dc_ptr
 235  */
 236 void release_dc_ptr( DC *dc )
 237 {
 238     LONG ref;
 239
 240     dc->thread = 0;
 241     ref = InterlockedDecrement( &dc->refcount );
 242     assert( ref >= 0 );
 243     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 244 }
 245
 246
 247 /***********************************************************************
 248  *           update_dc
 249  *
 250  * Make sure the DC vis region is up to date.
 251  * This function may call up to USER so the GDI lock should _not_
 252  * be held when calling it.
 253  */
 254 void update_dc( DC *dc )
 255 {
 256     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookThunk)
 257         dc->hookThunk( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 258 }
 259
 260
 261 /***********************************************************************
 262  *           DC_DeleteObject
 263  */
 264 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj )
 265 {
 266     GDI_ReleaseObj( handle );
 267     return DeleteDC( handle );
 268 }
 269
 270
 271 /***********************************************************************
 272  *           DC_InitDC
 273  *
 274  * Setup device-specific DC values for a newly created DC.
 275  */
 276 void DC_InitDC( DC* dc )
 277 {
 278     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 279     SetTextColor( dc->hSelf, dc->textColor );
 280     SetBkColor( dc->hSelf, dc->backgroundColor );
 281     SelectObject( dc->hSelf, dc->hPen );
 282     SelectObject( dc->hSelf, dc->hBrush );
 283     SelectObject( dc->hSelf, dc->hFont );
 284     CLIPPING_UpdateGCRegion( dc );
 285 }
 286
 287
 288 /***********************************************************************
 289  *           DC_InvertXform
 290  *
 291  * Computes the inverse of the transformation xformSrc and stores it to
 292  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 293  * is singular.
 294  */
 295 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 296 {
 297     FLOAT determinant;
 298
 299     determinant = xformSrc->eM11*xformSrc->eM22 -
 300         xformSrc->eM12*xformSrc->eM21;
 301     if (determinant > -1e-12 && determinant < 1e-12)
 302         return FALSE;
 303
 304     xformDest->eM11 =  xformSrc->eM22 / determinant;
 305     xformDest->eM12 = -xformSrc->eM12 / determinant;
 306     xformDest->eM21 = -xformSrc->eM21 / determinant;
 307     xformDest->eM22 =  xformSrc->eM11 / determinant;
 308     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 309                        xformSrc->eDy * xformDest->eM21;
 310     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 311                        xformSrc->eDy * xformDest->eM22;
 312
 313     return TRUE;
 314 }
 315
 316
 317 /***********************************************************************
 318  *           DC_UpdateXforms
 319  *
 320  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 321  * fields of the specified DC by creating a transformation that
 322  * represents the current mapping mode and combining it with the DC's
 323  * world transform. This function should be called whenever the
 324  * parameters associated with the mapping mode (window and viewport
 325  * extents and origins) or the world transform change.
 326  */
 327 void DC_UpdateXforms( DC *dc )
 328 {
 329     XFORM xformWnd2Vport, oldworld2vport;
 330     FLOAT scaleX, scaleY;
 331
 332     /* Construct a transformation to do the window-to-viewport conversion */
 333     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 334     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 335     xformWnd2Vport.eM11 = scaleX;
 336     xformWnd2Vport.eM12 = 0.0;
 337     xformWnd2Vport.eM21 = 0.0;
 338     xformWnd2Vport.eM22 = scaleY;
 339     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 340         scaleX * (FLOAT)dc->wndOrgX;
 341     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 342         scaleY * (FLOAT)dc->wndOrgY;
 343
 344     oldworld2vport = dc->xformWorld2Vport;
 345     /* Combine with the world transformation */
 346     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 347         &xformWnd2Vport );
 348
 349     /* Create inverse of world-to-viewport transformation */
 350     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 351         &dc->xformVport2World );
 352
 353     /* Reselect the font and pen back into the dc so that the size
 354        gets updated. */
 355     if(memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)))
 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  *           GetDCState   (Not a Windows API)
 365  */
 366 HDC WINAPI GetDCState( HDC hdc )
 367 {
 368     DC * newdc, * dc;
 369     HGDIOBJ handle;
 370
 371     if (!(dc = get_dc_ptr( hdc ))) return 0;
 372     if (!(newdc = GDI_AllocObject( sizeof(DC), GDIMAGIC(dc->header.wMagic), &handle, &dc_funcs )))
 373     {
 374       release_dc_ptr( dc );
 375       return 0;
 376     }
 377     TRACE("(%p): returning %p\n", hdc, handle );
 378
 379     newdc->flags            = dc->flags | DC_SAVED;
 380     newdc->layout           = dc->layout;
 381     newdc->hPen             = dc->hPen;
 382     newdc->hBrush           = dc->hBrush;
 383     newdc->hFont            = dc->hFont;
 384     newdc->hBitmap          = dc->hBitmap;
 385     newdc->hDevice          = dc->hDevice;
 386     newdc->hPalette         = dc->hPalette;
 387     newdc->ROPmode          = dc->ROPmode;
 388     newdc->polyFillMode     = dc->polyFillMode;
 389     newdc->stretchBltMode   = dc->stretchBltMode;
 390     newdc->relAbsMode       = dc->relAbsMode;
 391     newdc->backgroundMode   = dc->backgroundMode;
 392     newdc->backgroundColor  = dc->backgroundColor;
 393     newdc->textColor        = dc->textColor;
 394     newdc->dcBrushColor     = dc->dcBrushColor;
 395     newdc->dcPenColor       = dc->dcPenColor;
 396     newdc->brushOrgX        = dc->brushOrgX;
 397     newdc->brushOrgY        = dc->brushOrgY;
 398     newdc->textAlign        = dc->textAlign;
 399     newdc->charExtra        = dc->charExtra;
 400     newdc->breakExtra       = dc->breakExtra;
 401     newdc->breakRem         = dc->breakRem;
 402     newdc->MapMode          = dc->MapMode;
 403     newdc->GraphicsMode     = dc->GraphicsMode;
 404     newdc->CursPosX         = dc->CursPosX;
 405     newdc->CursPosY         = dc->CursPosY;
 406     newdc->ArcDirection     = dc->ArcDirection;
 407     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 408     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 409     newdc->xformVport2World = dc->xformVport2World;
 410     newdc->vport2WorldValid = dc->vport2WorldValid;
 411     newdc->wndOrgX          = dc->wndOrgX;
 412     newdc->wndOrgY          = dc->wndOrgY;
 413     newdc->wndExtX          = dc->wndExtX;
 414     newdc->wndExtY          = dc->wndExtY;
 415     newdc->vportOrgX        = dc->vportOrgX;
 416     newdc->vportOrgY        = dc->vportOrgY;
 417     newdc->vportExtX        = dc->vportExtX;
 418     newdc->vportExtY        = dc->vportExtY;
 419     newdc->BoundsRect       = dc->BoundsRect;
 420
 421     newdc->hSelf = (HDC)handle;
 422     newdc->thread    = GetCurrentThreadId();
 423     newdc->refcount  = 1;
 424     newdc->saveLevel = 0;
 425     newdc->saved_dc  = 0;
 426     GDI_ReleaseObj( handle );
 427
 428     PATH_InitGdiPath( &newdc->path );
 429
 430     newdc->pAbortProc = NULL;
 431     newdc->hookThunk  = NULL;
 432     newdc->hookProc   = 0;
 433     newdc->saved_visrgn = NULL;
 434
 435     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 436
 437     newdc->hVisRgn      = 0;
 438     newdc->hClipRgn     = 0;
 439     newdc->hMetaRgn     = 0;
 440     newdc->hMetaClipRgn = 0;
 441     if (dc->hClipRgn)
 442     {
 443         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 444         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 445     }
 446     if (dc->hMetaRgn)
 447     {
 448         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 449         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 450     }
 451     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 452
 453     if(dc->gdiFont) {
 454         newdc->gdiFont = dc->gdiFont;
 455     } else
 456         newdc->gdiFont = 0;
 457
 458     release_dc_ptr( newdc );
 459     release_dc_ptr( dc );
 460     return handle;
 461 }
 462
 463
 464 /***********************************************************************
 465  *           SetDCState   (Not a Windows API)
 466  */
 467 void WINAPI SetDCState( HDC hdc, HDC hdcs )
 468 {
 469     DC *dc, *dcs;
 470
 471     if (!(dc = get_dc_ptr( hdc ))) return;
 472     if (!(dcs = get_dc_ptr( hdcs )))
 473     {
 474         release_dc_ptr( dc );
 475         return;
 476     }
 477     if (!(dcs->flags & DC_SAVED))
 478     {
 479         release_dc_ptr( dc );
 480         release_dc_ptr( dcs );
 481         return;
 482     }
 483     TRACE("%p %p\n", hdc, hdcs );
 484
 485     update_dc( dc );
 486     dc->flags            = dcs->flags & ~DC_SAVED;
 487     dc->layout           = dcs->layout;
 488     dc->hDevice          = dcs->hDevice;
 489     dc->ROPmode          = dcs->ROPmode;
 490     dc->polyFillMode     = dcs->polyFillMode;
 491     dc->stretchBltMode   = dcs->stretchBltMode;
 492     dc->relAbsMode       = dcs->relAbsMode;
 493     dc->backgroundMode   = dcs->backgroundMode;
 494     dc->backgroundColor  = dcs->backgroundColor;
 495     dc->textColor        = dcs->textColor;
 496     dc->dcBrushColor     = dcs->dcBrushColor;
 497     dc->dcPenColor       = dcs->dcPenColor;
 498     dc->brushOrgX        = dcs->brushOrgX;
 499     dc->brushOrgY        = dcs->brushOrgY;
 500     dc->textAlign        = dcs->textAlign;
 501     dc->charExtra        = dcs->charExtra;
 502     dc->breakExtra       = dcs->breakExtra;
 503     dc->breakRem         = dcs->breakRem;
 504     dc->MapMode          = dcs->MapMode;
 505     dc->GraphicsMode     = dcs->GraphicsMode;
 506     dc->CursPosX         = dcs->CursPosX;
 507     dc->CursPosY         = dcs->CursPosY;
 508     dc->ArcDirection     = dcs->ArcDirection;
 509     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 510     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 511     dc->xformVport2World = dcs->xformVport2World;
 512     dc->vport2WorldValid = dcs->vport2WorldValid;
 513     dc->BoundsRect       = dcs->BoundsRect;
 514
 515     dc->wndOrgX          = dcs->wndOrgX;
 516     dc->wndOrgY          = dcs->wndOrgY;
 517     dc->wndExtX          = dcs->wndExtX;
 518     dc->wndExtY          = dcs->wndExtY;
 519     dc->vportOrgX        = dcs->vportOrgX;
 520     dc->vportOrgY        = dcs->vportOrgY;
 521     dc->vportExtX        = dcs->vportExtX;
 522     dc->vportExtY        = dcs->vportExtY;
 523
 524     if (dcs->hClipRgn)
 525     {
 526         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 527         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 528     }
 529     else
 530     {
 531         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 532         dc->hClipRgn = 0;
 533     }
 534     if (dcs->hMetaRgn)
 535     {
 536         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 537         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 538     }
 539     else
 540     {
 541         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 542         dc->hMetaRgn = 0;
 543     }
 544     CLIPPING_UpdateGCRegion( dc );
 545
 546     SelectObject( hdc, dcs->hBitmap );
 547     SelectObject( hdc, dcs->hBrush );
 548     SelectObject( hdc, dcs->hFont );
 549     SelectObject( hdc, dcs->hPen );
 550     SetBkColor( hdc, dcs->backgroundColor);
 551     SetTextColor( hdc, dcs->textColor);
 552     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 553     release_dc_ptr( dc );
 554     release_dc_ptr( dcs );
 555 }
 556
 557
 558 /***********************************************************************
 559  *           GetDCState   (GDI.179)
 560  */
 561 HDC16 WINAPI GetDCState16( HDC16 hdc )
 562 {
 563     return HDC_16( GetDCState( HDC_32(hdc) ));
 564 }
 565
 566
 567 /***********************************************************************
 568  *           SetDCState   (GDI.180)
 569  */
 570 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 571 {
 572     SetDCState( HDC_32(hdc), HDC_32(hdcs) );
 573 }
 574
 575
 576 /***********************************************************************
 577  *           SaveDC    (GDI32.@)
 578  */
 579 INT WINAPI SaveDC( HDC hdc )
 580 {
 581     HDC hdcs;
 582     DC * dc, * dcs;
 583     INT ret;
 584
 585     dc = get_dc_ptr( hdc );
 586     if (!dc) return 0;
 587
 588     if(dc->funcs->pSaveDC)
 589     {
 590         ret = dc->funcs->pSaveDC( dc->physDev );
 591         if(ret)
 592             ret = ++dc->saveLevel;
 593         release_dc_ptr( dc );
 594         return ret;
 595     }
 596
 597     if (!(hdcs = GetDCState( hdc )))
 598     {
 599         release_dc_ptr( dc );
 600         return 0;
 601     }
 602     dcs = get_dc_ptr( hdcs );
 603
 604     /* Copy path. The reason why path saving / restoring is in SaveDC/
 605      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 606      * functions are only in Win16 (which doesn't have paths) and that
 607      * SetDCState doesn't allow us to signal an error (which can happen
 608      * when copying paths).
 609      */
 610     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 611     {
 612         release_dc_ptr( dc );
 613         release_dc_ptr( dcs );
 614         DeleteDC( hdcs );
 615         return 0;
 616     }
 617
 618     dcs->saved_dc = dc->saved_dc;
 619     dc->saved_dc = hdcs;
 620     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 621     ret = ++dc->saveLevel;
 622     release_dc_ptr( dcs );
 623     release_dc_ptr( dc );
 624     return ret;
 625 }
 626
 627
 628 /***********************************************************************
 629  *           RestoreDC    (GDI32.@)
 630  */
 631 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 632 {
 633     DC * dc, * dcs;
 634     BOOL success;
 635
 636     TRACE("%p %d\n", hdc, level );
 637     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 638
 639     if(abs(level) > dc->saveLevel || level == 0)
 640     {
 641         release_dc_ptr( dc );
 642         return FALSE;
 643     }
 644
 645     update_dc( dc );
 646
 647     if(dc->funcs->pRestoreDC)
 648     {
 649         success = dc->funcs->pRestoreDC( dc->physDev, level );
 650         if(level < 0) level = dc->saveLevel + level + 1;
 651         if(success)
 652             dc->saveLevel = level - 1;
 653         release_dc_ptr( dc );
 654         return success;
 655     }
 656
 657     if (level < 0) level = dc->saveLevel + level + 1;
 658     success=TRUE;
 659     while (dc->saveLevel >= level)
 660     {
 661         HDC hdcs = dc->saved_dc;
 662         if (!(dcs = get_dc_ptr( hdcs )))
 663         {
 664             success = FALSE;
 665             break;
 666         }
 667         dc->saved_dc = dcs->saved_dc;
 668         dcs->saved_dc = 0;
 669         if (--dc->saveLevel < level)
 670         {
 671             SetDCState( hdc, hdcs );
 672             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 673                 /* FIXME: This might not be quite right, since we're
 674                  * returning FALSE but still destroying the saved DC state */
 675                 success=FALSE;
 676         }
 677         release_dc_ptr( dcs );
 678         DeleteDC( hdcs );
 679     }
 680     release_dc_ptr( dc );
 681     return success;
 682 }
 683
 684
 685 /***********************************************************************
 686  *           CreateDCW    (GDI32.@)
 687  */
 688 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 689                       const DEVMODEW *initData )
 690 {
 691     HDC hdc;
 692     DC * dc;
 693     const DC_FUNCTIONS *funcs;
 694     WCHAR buf[300];
 695
 696     GDI_CheckNotLock();
 697
 698     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 699     {
 700         if (!driver)
 701         {
 702             ERR( "no device found for %s\n", debugstr_w(device) );
 703             return 0;
 704         }
 705         strcpyW(buf, driver);
 706     }
 707
 708     if (!(funcs = DRIVER_load_driver( buf )))
 709     {
 710         ERR( "no driver found for %s\n", debugstr_w(buf) );
 711         return 0;
 712     }
 713     if (!(dc = alloc_dc_ptr( funcs, DC_MAGIC ))) goto error;
 714     hdc = dc->hSelf;
 715
 716     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 717     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 718
 719     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 720           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 721
 722     if (dc->funcs->pCreateDC &&
 723         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 724     {
 725         WARN("creation aborted by device\n" );
 726         goto error;
 727     }
 728
 729     SetRectRgn( dc->hVisRgn, 0, 0,
 730                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 731
 732     DC_InitDC( dc );
 733     release_dc_ptr( dc );
 734     return hdc;
 735
 736 error:
 737     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 738     if (dc) free_dc_ptr( dc );
 739     DRIVER_release_driver( funcs );
 740     return 0;
 741 }
 742
 743
 744 /***********************************************************************
 745  *           CreateDCA    (GDI32.@)
 746  */
 747 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 748                       const DEVMODEA *initData )
 749 {
 750     UNICODE_STRING driverW, deviceW, outputW;
 751     DEVMODEW *initDataW;
 752     HDC ret;
 753
 754     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 755     else driverW.Buffer = NULL;
 756
 757     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 758     else deviceW.Buffer = NULL;
 759
 760     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 761     else outputW.Buffer = NULL;
 762
 763     initDataW = NULL;
 764     if (initData)
 765     {
 766         /* don't convert initData for DISPLAY driver, it's not used */
 767         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 768             initDataW = GdiConvertToDevmodeW(initData);
 769     }
 770
 771     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 772
 773     RtlFreeUnicodeString(&driverW);
 774     RtlFreeUnicodeString(&deviceW);
 775     RtlFreeUnicodeString(&outputW);
 776     HeapFree(GetProcessHeap(), 0, initDataW);
 777     return ret;
 778 }
 779
 780
 781 /***********************************************************************
 782  *           CreateICA    (GDI32.@)
 783  */
 784 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 785                           const DEVMODEA* initData )
 786 {
 787       /* Nothing special yet for ICs */
 788     return CreateDCA( driver, device, output, initData );
 789 }
 790
 791
 792 /***********************************************************************
 793  *           CreateICW    (GDI32.@)
 794  */
 795 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 796                           const DEVMODEW* initData )
 797 {
 798       /* Nothing special yet for ICs */
 799     return CreateDCW( driver, device, output, initData );
 800 }
 801
 802
 803 /***********************************************************************
 804  *           CreateCompatibleDC   (GDI32.@)
 805  */
 806 HDC WINAPI CreateCompatibleDC( HDC hdc )
 807 {
 808     DC *dc, *origDC;
 809     HDC ret;
 810     const DC_FUNCTIONS *funcs = NULL;
 811     PHYSDEV physDev = NULL;
 812
 813     GDI_CheckNotLock();
 814
 815     if ((origDC = get_dc_ptr( hdc )))
 816     {
 817         if (GetObjectType( hdc ) == OBJ_DC)
 818         {
 819             funcs = origDC->funcs;
 820             physDev = origDC->physDev;
 821         }
 822         release_dc_ptr( origDC );
 823         if (funcs) funcs = DRIVER_get_driver( funcs );
 824     }
 825
 826     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 827
 828     if (!(dc = alloc_dc_ptr( funcs, MEMORY_DC_MAGIC ))) goto error;
 829
 830     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 831
 832     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 833     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 834
 835     /* Copy the driver-specific physical device info into
 836      * the new DC. The driver may use this read-only info
 837      * while creating the compatible DC below. */
 838     dc->physDev = physDev;
 839     ret = dc->hSelf;
 840
 841     if (dc->funcs->pCreateDC &&
 842         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 843     {
 844         WARN("creation aborted by device\n");
 845         goto error;
 846     }
 847
 848     DC_InitDC( dc );
 849     release_dc_ptr( dc );
 850     return ret;
 851
 852 error:
 853     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 854     if (dc) free_dc_ptr( dc );
 855     DRIVER_release_driver( funcs );
 856     return 0;
 857 }
 858
 859
 860 /***********************************************************************
 861  *           DeleteDC    (GDI32.@)
 862  */
 863 BOOL WINAPI DeleteDC( HDC hdc )
 864 {
 865     const DC_FUNCTIONS *funcs = NULL;
 866     DC * dc;
 867
 868     TRACE("%p\n", hdc );
 869
 870     GDI_CheckNotLock();
 871
 872     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 873     if (dc->refcount != 1)
 874     {
 875         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 876         release_dc_ptr( dc );
 877         return FALSE;
 878     }
 879
 880     /* Call hook procedure to check whether is it OK to delete this DC */
 881     if (dc->hookThunk && !dc->hookThunk( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 882     {
 883         release_dc_ptr( dc );
 884         return FALSE;
 885     }
 886
 887     while (dc->saveLevel)
 888     {
 889         DC * dcs;
 890         HDC hdcs = dc->saved_dc;
 891         if (!(dcs = get_dc_ptr( hdcs ))) break;
 892         dc->saved_dc = dcs->saved_dc;
 893         dc->saveLevel--;
 894         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 895         if (dcs->hMetaRgn) DeleteObject( dcs->hMetaRgn );
 896         if (dcs->hMetaClipRgn) DeleteObject( dcs->hMetaClipRgn );
 897         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 898         PATH_DestroyGdiPath(&dcs->path);
 899         free_dc_ptr( dcs );
 900     }
 901
 902     if (!(dc->flags & DC_SAVED))
 903     {
 904         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 905         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 906         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 907         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 908         funcs = dc->funcs;
 909         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 910         dc->physDev = NULL;
 911     }
 912
 913     while (dc->saved_visrgn)
 914     {
 915         struct saved_visrgn *next = dc->saved_visrgn->next;
 916         DeleteObject( dc->saved_visrgn->hrgn );
 917         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 918         dc->saved_visrgn = next;
 919     }
 920     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 921     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 922     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 923     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 924     PATH_DestroyGdiPath(&dc->path);
 925
 926     free_dc_ptr( dc );
 927     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 928     return TRUE;
 929 }
 930
 931
 932 /***********************************************************************
 933  *           ResetDCW    (GDI32.@)
 934  */
 935 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 936 {
 937     DC *dc;
 938     HDC ret = hdc;
 939
 940     if ((dc = get_dc_ptr( hdc )))
 941     {
 942         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 943         release_dc_ptr( dc );
 944     }
 945     return ret;
 946 }
 947
 948
 949 /***********************************************************************
 950  *           ResetDCA    (GDI32.@)
 951  */
 952 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 953 {
 954     DEVMODEW *devmodeW;
 955     HDC ret;
 956
 957     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 958     else devmodeW = NULL;
 959
 960     ret = ResetDCW(hdc, devmodeW);
 961
 962     HeapFree(GetProcessHeap(), 0, devmodeW);
 963     return ret;
 964 }
 965
 966
 967 /***********************************************************************
 968  *           GetDeviceCaps    (GDI32.@)
 969  */
 970 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 971 {
 972     DC *dc;
 973     INT ret = 0;
 974
 975     if ((dc = get_dc_ptr( hdc )))
 976     {
 977         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 978         else switch(cap)  /* return meaningful values for some entries */
 979         {
 980         case HORZRES:     ret = 640; break;
 981         case VERTRES:     ret = 480; break;
 982         case BITSPIXEL:   ret = 1; break;
 983         case PLANES:      ret = 1; break;
 984         case NUMCOLORS:   ret = 2; break;
 985         case ASPECTX:     ret = 36; break;
 986         case ASPECTY:     ret = 36; break;
 987         case ASPECTXY:    ret = 51; break;
 988         case LOGPIXELSX:  ret = 72; break;
 989         case LOGPIXELSY:  ret = 72; break;
 990         case SIZEPALETTE: ret = 2; break;
 991         }
 992         release_dc_ptr( dc );
 993     }
 994     return ret;
 995 }
 996
 997
 998 /***********************************************************************
 999  *              GetBkColor (GDI32.@)
1000  */
1001 COLORREF WINAPI GetBkColor( HDC hdc )
1002 {
1003     COLORREF ret = 0;
1004     DC * dc = get_dc_ptr( hdc );
1005     if (dc)
1006     {
1007         ret = dc->backgroundColor;
1008         release_dc_ptr( dc );
1009     }
1010     return ret;
1011 }
1012
1013
1014 /***********************************************************************
1015  *           SetBkColor    (GDI32.@)
1016  */
1017 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
1018 {
1019     COLORREF oldColor;
1020     DC * dc = get_dc_ptr( hdc );
1021
1022     TRACE("hdc=%p color=0x%08x\n", hdc, color);
1023
1024     if (!dc) return CLR_INVALID;
1025     oldColor = dc->backgroundColor;
1026     if (dc->funcs->pSetBkColor)
1027     {
1028         color = dc->funcs->pSetBkColor(dc->physDev, color);
1029         if (color == CLR_INVALID)  /* don't change it */
1030         {
1031             color = oldColor;
1032             oldColor = CLR_INVALID;
1033         }
1034     }
1035     dc->backgroundColor = color;
1036     release_dc_ptr( dc );
1037     return oldColor;
1038 }
1039
1040
1041 /***********************************************************************
1042  *              GetTextColor (GDI32.@)
1043  */
1044 COLORREF WINAPI GetTextColor( HDC hdc )
1045 {
1046     COLORREF ret = 0;
1047     DC * dc = get_dc_ptr( hdc );
1048     if (dc)
1049     {
1050         ret = dc->textColor;
1051         release_dc_ptr( dc );
1052     }
1053     return ret;
1054 }
1055
1056
1057 /***********************************************************************
1058  *           SetTextColor    (GDI32.@)
1059  */
1060 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
1061 {
1062     COLORREF oldColor;
1063     DC * dc = get_dc_ptr( hdc );
1064
1065     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
1066
1067     if (!dc) return CLR_INVALID;
1068     oldColor = dc->textColor;
1069     if (dc->funcs->pSetTextColor)
1070     {
1071         color = dc->funcs->pSetTextColor(dc->physDev, color);
1072         if (color == CLR_INVALID)  /* don't change it */
1073         {
1074             color = oldColor;
1075             oldColor = CLR_INVALID;
1076         }
1077     }
1078     dc->textColor = color;
1079     release_dc_ptr( dc );
1080     return oldColor;
1081 }
1082
1083
1084 /***********************************************************************
1085  *              GetTextAlign (GDI32.@)
1086  */
1087 UINT WINAPI GetTextAlign( HDC hdc )
1088 {
1089     UINT ret = 0;
1090     DC * dc = get_dc_ptr( hdc );
1091     if (dc)
1092     {
1093         ret = dc->textAlign;
1094         release_dc_ptr( dc );
1095     }
1096     return ret;
1097 }
1098
1099
1100 /***********************************************************************
1101  *           SetTextAlign    (GDI32.@)
1102  */
1103 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1104 {
1105     UINT ret;
1106     DC *dc = get_dc_ptr( hdc );
1107
1108     TRACE("hdc=%p align=%d\n", hdc, align);
1109
1110     if (!dc) return 0x0;
1111     ret = dc->textAlign;
1112     if (dc->funcs->pSetTextAlign)
1113         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1114             ret = GDI_ERROR;
1115     if (ret != GDI_ERROR)
1116         dc->textAlign = align;
1117     release_dc_ptr( dc );
1118     return ret;
1119 }
1120
1121 /***********************************************************************
1122  *           GetDCOrgEx  (GDI32.@)
1123  */
1124 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1125 {
1126     DC * dc;
1127
1128     if (!lpp) return FALSE;
1129     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1130
1131     lpp->x = lpp->y = 0;
1132     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1133     release_dc_ptr( dc );
1134     return TRUE;
1135 }
1136
1137
1138 /***********************************************************************
1139  *           SetDCOrg   (GDI.117)
1140  */
1141 DWORD WINAPI SetDCOrg16( HDC16 hdc16, INT16 x, INT16 y )
1142 {
1143     DWORD prevOrg = 0;
1144     HDC hdc = HDC_32( hdc16 );
1145     DC *dc = get_dc_ptr( hdc );
1146     if (!dc) return 0;
1147     if (dc->funcs->pSetDCOrg) prevOrg = dc->funcs->pSetDCOrg( dc->physDev, x, y );
1148     release_dc_ptr( dc );
1149     return prevOrg;
1150 }
1151
1152
1153 /***********************************************************************
1154  *              GetGraphicsMode (GDI32.@)
1155  */
1156 INT WINAPI GetGraphicsMode( HDC hdc )
1157 {
1158     INT ret = 0;
1159     DC * dc = get_dc_ptr( hdc );
1160     if (dc)
1161     {
1162         ret = dc->GraphicsMode;
1163         release_dc_ptr( dc );
1164     }
1165     return ret;
1166 }
1167
1168
1169 /***********************************************************************
1170  *           SetGraphicsMode    (GDI32.@)
1171  */
1172 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1173 {
1174     INT ret = 0;
1175     DC *dc = get_dc_ptr( hdc );
1176
1177     /* One would think that setting the graphics mode to GM_COMPATIBLE
1178      * would also reset the world transformation matrix to the unity
1179      * matrix. However, in Windows, this is not the case. This doesn't
1180      * make a lot of sense to me, but that's the way it is.
1181      */
1182     if (!dc) return 0;
1183     if ((mode > 0) && (mode <= GM_LAST))
1184     {
1185         ret = dc->GraphicsMode;
1186         dc->GraphicsMode = mode;
1187     }
1188     release_dc_ptr( dc );
1189     return ret;
1190 }
1191
1192
1193 /***********************************************************************
1194  *              GetArcDirection (GDI32.@)
1195  */
1196 INT WINAPI GetArcDirection( HDC hdc )
1197 {
1198     INT ret = 0;
1199     DC * dc = get_dc_ptr( hdc );
1200     if (dc)
1201     {
1202         ret = dc->ArcDirection;
1203         release_dc_ptr( dc );
1204     }
1205     return ret;
1206 }
1207
1208
1209 /***********************************************************************
1210  *           SetArcDirection    (GDI32.@)
1211  */
1212 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1213 {
1214     DC * dc;
1215     INT nOldDirection = 0;
1216
1217     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1218     {
1219         SetLastError(ERROR_INVALID_PARAMETER);
1220         return 0;
1221     }
1222
1223     if ((dc = get_dc_ptr( hdc )))
1224     {
1225         if (dc->funcs->pSetArcDirection)
1226         {
1227             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1228         }
1229         nOldDirection = dc->ArcDirection;
1230         dc->ArcDirection = nDirection;
1231         release_dc_ptr( dc );
1232     }
1233     return nOldDirection;
1234 }
1235
1236
1237 /***********************************************************************
1238  *           GetWorldTransform    (GDI32.@)
1239  */
1240 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1241 {
1242     DC * dc;
1243     if (!xform) return FALSE;
1244     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1245     *xform = dc->xformWorld2Wnd;
1246     release_dc_ptr( dc );
1247     return TRUE;
1248 }
1249
1250
1251 /***********************************************************************
1252  *           GetTransform    (GDI32.@)
1253  */
1254 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1255 {
1256     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1257     FIXME("stub: don't know what to do for code %x\n", unknown );
1258     return FALSE;
1259 }
1260
1261
1262 /***********************************************************************
1263  *           SetWorldTransform    (GDI32.@)
1264  */
1265 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1266 {
1267     BOOL ret = FALSE;
1268     DC *dc = get_dc_ptr( hdc );
1269
1270     if (!dc) return FALSE;
1271     if (!xform) goto done;
1272
1273     /* Check that graphics mode is GM_ADVANCED */
1274     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1275
1276     if (dc->funcs->pSetWorldTransform)
1277     {
1278         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1279         if (!ret) goto done;
1280     }
1281
1282     dc->xformWorld2Wnd = *xform;
1283     DC_UpdateXforms( dc );
1284     ret = TRUE;
1285  done:
1286     release_dc_ptr( dc );
1287     return ret;
1288 }
1289
1290
1291 /****************************************************************************
1292  * ModifyWorldTransform [GDI32.@]
1293  * Modifies the world transformation for a device context.
1294  *
1295  * PARAMS
1296  *    hdc   [I] Handle to device context
1297  *    xform [I] XFORM structure that will be used to modify the world
1298  *              transformation
1299  *    iMode [I] Specifies in what way to modify the world transformation
1300  *              Possible values:
1301  *              MWT_IDENTITY
1302  *                 Resets the world transformation to the identity matrix.
1303  *                 The parameter xform is ignored.
1304  *              MWT_LEFTMULTIPLY
1305  *                 Multiplies xform into the world transformation matrix from
1306  *                 the left.
1307  *              MWT_RIGHTMULTIPLY
1308  *                 Multiplies xform into the world transformation matrix from
1309  *                 the right.
1310  *
1311  * RETURNS
1312  *  Success: TRUE.
1313  *  Failure: FALSE. Use GetLastError() to determine the cause.
1314  */
1315 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1316     DWORD iMode )
1317 {
1318     BOOL ret = FALSE;
1319     DC *dc = get_dc_ptr( hdc );
1320
1321     /* Check for illegal parameters */
1322     if (!dc) return FALSE;
1323     if (!xform && iMode != MWT_IDENTITY) goto done;
1324
1325     /* Check that graphics mode is GM_ADVANCED */
1326     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1327
1328     if (dc->funcs->pModifyWorldTransform)
1329     {
1330         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1331         if (!ret) goto done;
1332     }
1333
1334     switch (iMode)
1335     {
1336         case MWT_IDENTITY:
1337             dc->xformWorld2Wnd.eM11 = 1.0f;
1338             dc->xformWorld2Wnd.eM12 = 0.0f;
1339             dc->xformWorld2Wnd.eM21 = 0.0f;
1340             dc->xformWorld2Wnd.eM22 = 1.0f;
1341             dc->xformWorld2Wnd.eDx  = 0.0f;
1342             dc->xformWorld2Wnd.eDy  = 0.0f;
1343             break;
1344         case MWT_LEFTMULTIPLY:
1345             CombineTransform( &dc->xformWorld2Wnd, xform,
1346                 &dc->xformWorld2Wnd );
1347             break;
1348         case MWT_RIGHTMULTIPLY:
1349             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1350                 xform );
1351             break;
1352         default:
1353             goto done;
1354     }
1355
1356     DC_UpdateXforms( dc );
1357     ret = TRUE;
1358  done:
1359     release_dc_ptr( dc );
1360     return ret;
1361 }
1362
1363
1364 /****************************************************************************
1365  * CombineTransform [GDI32.@]
1366  * Combines two transformation matrices.
1367  *
1368  * PARAMS
1369  *    xformResult [O] Stores the result of combining the two matrices
1370  *    xform1      [I] Specifies the first matrix to apply
1371  *    xform2      [I] Specifies the second matrix to apply
1372  *
1373  * REMARKS
1374  *    The same matrix can be passed in for more than one of the parameters.
1375  *
1376  * RETURNS
1377  *  Success: TRUE.
1378  *  Failure: FALSE. Use GetLastError() to determine the cause.
1379  */
1380 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1381     const XFORM *xform2 )
1382 {
1383     XFORM xformTemp;
1384
1385     /* Check for illegal parameters */
1386     if (!xformResult || !xform1 || !xform2)
1387         return FALSE;
1388
1389     /* Create the result in a temporary XFORM, since xformResult may be
1390      * equal to xform1 or xform2 */
1391     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1392                      xform1->eM12 * xform2->eM21;
1393     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1394                      xform1->eM12 * xform2->eM22;
1395     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1396                      xform1->eM22 * xform2->eM21;
1397     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1398                      xform1->eM22 * xform2->eM22;
1399     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1400                      xform1->eDy  * xform2->eM21 +
1401                      xform2->eDx;
1402     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1403                      xform1->eDy  * xform2->eM22 +
1404                      xform2->eDy;
1405
1406     /* Copy the result to xformResult */
1407     *xformResult = xformTemp;
1408
1409     return TRUE;
1410 }
1411
1412
1413 /***********************************************************************
1414  *           SetDCHook   (GDI32.@)
1415  *
1416  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1417  */
1418 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1419 {
1420     DC *dc = get_dc_ptr( hdc );
1421
1422     if (!dc) return FALSE;
1423
1424     if (!(dc->flags & DC_SAVED))
1425     {
1426         dc->dwHookData = dwHookData;
1427         dc->hookThunk = hookProc;
1428     }
1429     release_dc_ptr( dc );
1430     return TRUE;
1431 }
1432
1433
1434 /* relay function to call the 16-bit DC hook proc */
1435 static BOOL WINAPI call_dc_hook16( HDC hdc, WORD code, DWORD_PTR data, LPARAM lParam )
1436 {
1437     WORD args[6];
1438     DWORD ret = 0;
1439     DC *dc = get_dc_ptr( hdc );
1440
1441     if (!dc) return FALSE;
1442     if (dc->hookProc)
1443     {
1444         args[5] = HDC_16(hdc);
1445         args[4] = code;
1446         args[3] = HIWORD(data);
1447         args[2] = LOWORD(data);
1448         args[1] = HIWORD(lParam);
1449         args[0] = LOWORD(lParam);
1450         WOWCallback16Ex( (DWORD)dc->hookProc, WCB16_PASCAL, sizeof(args), args, &ret );
1451     }
1452     release_dc_ptr( dc );
1453     return LOWORD(ret);
1454 }
1455
1456 /***********************************************************************
1457  *           SetDCHook   (GDI.190)
1458  */
1459 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1460 {
1461     DC *dc = get_dc_ptr( HDC_32(hdc16) );
1462
1463     if (!dc) return FALSE;
1464     if (!(dc->flags & DC_SAVED))
1465     {
1466         dc->dwHookData = dwHookData;
1467         dc->hookThunk = call_dc_hook16;
1468         dc->hookProc = hookProc;
1469     }
1470     release_dc_ptr( dc );
1471     return TRUE;
1472 }
1473
1474
1475 /***********************************************************************
1476  *           GetDCHook   (GDI.191)
1477  */
1478 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1479 {
1480     HDC hdc = HDC_32( hdc16 );
1481     DC *dc = get_dc_ptr( hdc );
1482     DWORD ret;
1483
1484     if (!dc) return 0;
1485     *phookProc = dc->hookProc;
1486     ret = dc->dwHookData;
1487     release_dc_ptr( dc );
1488     return ret;
1489 }
1490
1491
1492 /***********************************************************************
1493  *           SetHookFlags   (GDI.192)
1494  */
1495 WORD WINAPI SetHookFlags16(HDC16 hdc16, WORD flags)
1496 {
1497     HDC hdc = HDC_32( hdc16 );
1498     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1499     LONG ret = 0;
1500
1501     if (!dc) return 0;
1502
1503     /* "Undocumented Windows" info is slightly confusing. */
1504
1505     TRACE("hDC %p, flags %04x\n",hdc,flags);
1506
1507     if (flags & DCHF_INVALIDATEVISRGN)
1508         ret = InterlockedExchange( &dc->dirty, 1 );
1509     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1510         ret = InterlockedExchange( &dc->dirty, 0 );
1511
1512     GDI_ReleaseObj( dc );
1513     return ret;
1514 }
1515
1516 /***********************************************************************
1517  *           SetICMMode    (GDI32.@)
1518  */
1519 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1520 {
1521 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1522     if (iEnableICM == ICM_OFF) return ICM_OFF;
1523     if (iEnableICM == ICM_ON) return 0;
1524     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1525     return 0;
1526 }
1527
1528 /***********************************************************************
1529  *           GetDeviceGammaRamp    (GDI32.@)
1530  */
1531 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1532 {
1533     BOOL ret = FALSE;
1534     DC *dc = get_dc_ptr( hDC );
1535
1536     if( dc )
1537     {
1538         if (dc->funcs->pGetDeviceGammaRamp)
1539             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1540         release_dc_ptr( dc );
1541     }
1542     return ret;
1543 }
1544
1545 /***********************************************************************
1546  *           SetDeviceGammaRamp    (GDI32.@)
1547  */
1548 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1549 {
1550     BOOL ret = FALSE;
1551     DC *dc = get_dc_ptr( hDC );
1552
1553     if( dc )
1554     {
1555         if (dc->funcs->pSetDeviceGammaRamp)
1556             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1557         release_dc_ptr( dc );
1558     }
1559     return ret;
1560 }
1561
1562 /***********************************************************************
1563  *           GetColorSpace    (GDI32.@)
1564  */
1565 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1566 {
1567 /*FIXME    Need to to whatever GetColorSpace actually does */
1568     return 0;
1569 }
1570
1571 /***********************************************************************
1572  *           CreateColorSpaceA    (GDI32.@)
1573  */
1574 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1575 {
1576   FIXME( "stub\n" );
1577   return 0;
1578 }
1579
1580 /***********************************************************************
1581  *           CreateColorSpaceW    (GDI32.@)
1582  */
1583 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1584 {
1585   FIXME( "stub\n" );
1586   return 0;
1587 }
1588
1589 /***********************************************************************
1590  *           DeleteColorSpace     (GDI32.@)
1591  */
1592 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1593 {
1594   FIXME( "stub\n" );
1595
1596   return TRUE;
1597 }
1598
1599 /***********************************************************************
1600  *           SetColorSpace     (GDI32.@)
1601  */
1602 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1603 {
1604   FIXME( "stub\n" );
1605
1606   return hColorSpace;
1607 }
1608
1609 /***********************************************************************
1610  *           GetBoundsRect    (GDI32.@)
1611  */
1612 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1613 {
1614     UINT ret;
1615     DC *dc = get_dc_ptr( hdc );
1616
1617     if ( !dc ) return 0;
1618
1619     if (rect) *rect = dc->BoundsRect;
1620
1621     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1622
1623     if (flags & DCB_RESET)
1624     {
1625         dc->BoundsRect.left   = 0;
1626         dc->BoundsRect.top    = 0;
1627         dc->BoundsRect.right  = 0;
1628         dc->BoundsRect.bottom = 0;
1629         dc->flags &= ~DC_BOUNDS_SET;
1630     }
1631     release_dc_ptr( dc );
1632     return ret;
1633 }
1634
1635
1636 /***********************************************************************
1637  *           SetBoundsRect    (GDI32.@)
1638  */
1639 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1640 {
1641     UINT ret;
1642     DC *dc;
1643
1644     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1645     if (!(dc = get_dc_ptr( hdc ))) return 0;
1646
1647     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1648           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1649
1650     if (flags & DCB_RESET)
1651     {
1652         dc->BoundsRect.left   = 0;
1653         dc->BoundsRect.top    = 0;
1654         dc->BoundsRect.right  = 0;
1655         dc->BoundsRect.bottom = 0;
1656         dc->flags &= ~DC_BOUNDS_SET;
1657     }
1658
1659     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1660     {
1661         if (dc->flags & DC_BOUNDS_SET)
1662         {
1663             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1664             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1665             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1666             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1667         }
1668         else
1669         {
1670             dc->BoundsRect = *rect;
1671             dc->flags |= DC_BOUNDS_SET;
1672         }
1673     }
1674
1675     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1676     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1677
1678     release_dc_ptr( dc );
1679     return ret;
1680 }
1681
1682
1683 /***********************************************************************
1684  *              GetRelAbs               (GDI32.@)
1685  */
1686 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1687 {
1688     INT ret = 0;
1689     DC *dc = get_dc_ptr( hdc );
1690     if (dc)
1691     {
1692         ret = dc->relAbsMode;
1693         release_dc_ptr( dc );
1694     }
1695     return ret;
1696 }
1697
1698
1699
1700
1701 /***********************************************************************
1702  *              GetBkMode (GDI32.@)
1703  */
1704 INT WINAPI GetBkMode( HDC hdc )
1705 {
1706     INT ret = 0;
1707     DC * dc = get_dc_ptr( hdc );
1708     if (dc)
1709     {
1710         ret = dc->backgroundMode;
1711         release_dc_ptr( dc );
1712     }
1713     return ret;
1714 }
1715
1716
1717 /***********************************************************************
1718  *              SetBkMode (GDI32.@)
1719  */
1720 INT WINAPI SetBkMode( HDC hdc, INT mode )
1721 {
1722     INT ret;
1723     DC *dc;
1724     if ((mode <= 0) || (mode > BKMODE_LAST))
1725     {
1726         SetLastError(ERROR_INVALID_PARAMETER);
1727         return 0;
1728     }
1729     if (!(dc = get_dc_ptr( hdc ))) return 0;
1730
1731     ret = dc->backgroundMode;
1732     if (dc->funcs->pSetBkMode)
1733         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1734             ret = 0;
1735     if (ret)
1736         dc->backgroundMode = mode;
1737     release_dc_ptr( dc );
1738     return ret;
1739 }
1740
1741
1742 /***********************************************************************
1743  *              GetROP2 (GDI32.@)
1744  */
1745 INT WINAPI GetROP2( HDC hdc )
1746 {
1747     INT ret = 0;
1748     DC * dc = get_dc_ptr( hdc );
1749     if (dc)
1750     {
1751         ret = dc->ROPmode;
1752         release_dc_ptr( dc );
1753     }
1754     return ret;
1755 }
1756
1757
1758 /***********************************************************************
1759  *              SetROP2 (GDI32.@)
1760  */
1761 INT WINAPI SetROP2( HDC hdc, INT mode )
1762 {
1763     INT ret;
1764     DC *dc;
1765     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1766     {
1767         SetLastError(ERROR_INVALID_PARAMETER);
1768         return 0;
1769     }
1770     if (!(dc = get_dc_ptr( hdc ))) return 0;
1771     ret = dc->ROPmode;
1772     if (dc->funcs->pSetROP2)
1773         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1774             ret = 0;
1775     if (ret)
1776         dc->ROPmode = mode;
1777     release_dc_ptr( dc );
1778     return ret;
1779 }
1780
1781
1782 /***********************************************************************
1783  *              SetRelAbs (GDI32.@)
1784  */
1785 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1786 {
1787     INT ret;
1788     DC *dc;
1789     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1790     {
1791         SetLastError(ERROR_INVALID_PARAMETER);
1792         return 0;
1793     }
1794     if (!(dc = get_dc_ptr( hdc ))) return 0;
1795     if (dc->funcs->pSetRelAbs)
1796         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1797     else
1798     {
1799         ret = dc->relAbsMode;
1800         dc->relAbsMode = mode;
1801     }
1802     release_dc_ptr( dc );
1803     return ret;
1804 }
1805
1806
1807 /***********************************************************************
1808  *              GetPolyFillMode (GDI32.@)
1809  */
1810 INT WINAPI GetPolyFillMode( HDC hdc )
1811 {
1812     INT ret = 0;
1813     DC * dc = get_dc_ptr( hdc );
1814     if (dc)
1815     {
1816         ret = dc->polyFillMode;
1817         release_dc_ptr( dc );
1818     }
1819     return ret;
1820 }
1821
1822
1823 /***********************************************************************
1824  *              SetPolyFillMode (GDI32.@)
1825  */
1826 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1827 {
1828     INT ret;
1829     DC *dc;
1830     if ((mode <= 0) || (mode > POLYFILL_LAST))
1831     {
1832         SetLastError(ERROR_INVALID_PARAMETER);
1833         return 0;
1834     }
1835     if (!(dc = get_dc_ptr( hdc ))) return 0;
1836     ret = dc->polyFillMode;
1837     if (dc->funcs->pSetPolyFillMode)
1838         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1839             ret = 0;
1840     if (ret)
1841         dc->polyFillMode = mode;
1842     release_dc_ptr( dc );
1843     return ret;
1844 }
1845
1846
1847 /***********************************************************************
1848  *              GetStretchBltMode (GDI32.@)
1849  */
1850 INT WINAPI GetStretchBltMode( HDC hdc )
1851 {
1852     INT ret = 0;
1853     DC * dc = get_dc_ptr( hdc );
1854     if (dc)
1855     {
1856         ret = dc->stretchBltMode;
1857         release_dc_ptr( dc );
1858     }
1859     return ret;
1860 }
1861
1862
1863 /***********************************************************************
1864  *              SetStretchBltMode (GDI32.@)
1865  */
1866 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1867 {
1868     INT ret;
1869     DC *dc;
1870     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1871     {
1872         SetLastError(ERROR_INVALID_PARAMETER);
1873         return 0;
1874     }
1875     if (!(dc = get_dc_ptr( hdc ))) return 0;
1876     ret = dc->stretchBltMode;
1877     if (dc->funcs->pSetStretchBltMode)
1878         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1879             ret = 0;
1880     if (ret)
1881         dc->stretchBltMode = mode;
1882     release_dc_ptr( dc );
1883     return ret;
1884 }
1885
1886
1887 /***********************************************************************
1888  *              GetMapMode (GDI32.@)
1889  */
1890 INT WINAPI GetMapMode( HDC hdc )
1891 {
1892     INT ret = 0;
1893     DC * dc = get_dc_ptr( hdc );
1894     if (dc)
1895     {
1896         ret = dc->MapMode;
1897         release_dc_ptr( dc );
1898     }
1899     return ret;
1900 }
1901
1902
1903 /***********************************************************************
1904  *              GetBrushOrgEx (GDI32.@)
1905  */
1906 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1907 {
1908     DC * dc = get_dc_ptr( hdc );
1909     if (!dc) return FALSE;
1910     pt->x = dc->brushOrgX;
1911     pt->y = dc->brushOrgY;
1912     release_dc_ptr( dc );
1913     return TRUE;
1914 }
1915
1916
1917 /***********************************************************************
1918  *              GetCurrentPositionEx (GDI32.@)
1919  */
1920 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1921 {
1922     DC * dc = get_dc_ptr( hdc );
1923     if (!dc) return FALSE;
1924     pt->x = dc->CursPosX;
1925     pt->y = dc->CursPosY;
1926     release_dc_ptr( dc );
1927     return TRUE;
1928 }
1929
1930
1931 /***********************************************************************
1932  *              GetViewportExtEx (GDI32.@)
1933  */
1934 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1935 {
1936     DC * dc = get_dc_ptr( hdc );
1937     if (!dc) return FALSE;
1938     size->cx = dc->vportExtX;
1939     size->cy = dc->vportExtY;
1940     release_dc_ptr( dc );
1941     return TRUE;
1942 }
1943
1944
1945 /***********************************************************************
1946  *              GetViewportOrgEx (GDI32.@)
1947  */
1948 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1949 {
1950     DC * dc = get_dc_ptr( hdc );
1951     if (!dc) return FALSE;
1952     pt->x = dc->vportOrgX;
1953     pt->y = dc->vportOrgY;
1954     release_dc_ptr( dc );
1955     return TRUE;
1956 }
1957
1958
1959 /***********************************************************************
1960  *              GetWindowExtEx (GDI32.@)
1961  */
1962 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1963 {
1964     DC * dc = get_dc_ptr( hdc );
1965     if (!dc) return FALSE;
1966     size->cx = dc->wndExtX;
1967     size->cy = dc->wndExtY;
1968     release_dc_ptr( dc );
1969     return TRUE;
1970 }
1971
1972
1973 /***********************************************************************
1974  *              GetWindowOrgEx (GDI32.@)
1975  */
1976 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1977 {
1978     DC * dc = get_dc_ptr( hdc );
1979     if (!dc) return FALSE;
1980     pt->x = dc->wndOrgX;
1981     pt->y = dc->wndOrgY;
1982     release_dc_ptr( dc );
1983     return TRUE;
1984 }
1985
1986
1987 /***********************************************************************
1988  *              InquireVisRgn   (GDI.131)
1989  */
1990 HRGN16 WINAPI InquireVisRgn16( HDC16 hdc )
1991 {
1992     HRGN16 ret = 0;
1993     DC * dc = get_dc_ptr( HDC_32(hdc) );
1994     if (dc)
1995     {
1996         ret = HRGN_16(dc->hVisRgn);
1997         release_dc_ptr( dc );
1998     }
1999     return ret;
2000 }
2001
2002
2003 /***********************************************************************
2004  *              GetClipRgn (GDI.173)
2005  */
2006 HRGN16 WINAPI GetClipRgn16( HDC16 hdc )
2007 {
2008     HRGN16 ret = 0;
2009     DC * dc = get_dc_ptr( HDC_32(hdc) );
2010     if (dc)
2011     {
2012         ret = HRGN_16(dc->hClipRgn);
2013         release_dc_ptr( dc );
2014     }
2015     return ret;
2016 }
2017
2018
2019 /***********************************************************************
2020  *           GetLayout    (GDI32.@)
2021  *
2022  * Gets left->right or right->left text layout flags of a dc.
2023  *
2024  */
2025 DWORD WINAPI GetLayout(HDC hdc)
2026 {
2027     DWORD layout = GDI_ERROR;
2028
2029     DC * dc = get_dc_ptr( hdc );
2030     if (dc)
2031     {
2032         layout = dc->layout;
2033         release_dc_ptr( dc );
2034     }
2035
2036     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
2037
2038     return layout;
2039 }
2040
2041 /***********************************************************************
2042  *           SetLayout    (GDI32.@)
2043  *
2044  * Sets left->right or right->left text layout flags of a dc.
2045  *
2046  */
2047 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
2048 {
2049     DWORD oldlayout = GDI_ERROR;
2050
2051     DC * dc = get_dc_ptr( hdc );
2052     if (dc)
2053     {
2054         oldlayout = dc->layout;
2055         dc->layout = layout;
2056         release_dc_ptr( dc );
2057     }
2058
2059     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
2060
2061     return oldlayout;
2062 }
2063
2064 /***********************************************************************
2065  *           GetDCBrushColor    (GDI32.@)
2066  *
2067  * Retrieves the current brush color for the specified device
2068  * context (DC).
2069  *
2070  */
2071 COLORREF WINAPI GetDCBrushColor(HDC hdc)
2072 {
2073     DC *dc;
2074     COLORREF dcBrushColor = CLR_INVALID;
2075
2076     TRACE("hdc(%p)\n", hdc);
2077
2078     dc = get_dc_ptr( hdc );
2079     if (dc)
2080     {
2081         dcBrushColor = dc->dcBrushColor;
2082         release_dc_ptr( dc );
2083     }
2084
2085     return dcBrushColor;
2086 }
2087
2088 /***********************************************************************
2089  *           SetDCBrushColor    (GDI32.@)
2090  *
2091  * Sets the current device context (DC) brush color to the specified
2092  * color value. If the device cannot represent the specified color
2093  * value, the color is set to the nearest physical color.
2094  *
2095  */
2096 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2097 {
2098     DC *dc;
2099     COLORREF oldClr = CLR_INVALID;
2100
2101     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2102
2103     dc = get_dc_ptr( hdc );
2104     if (dc)
2105     {
2106         if (dc->funcs->pSetDCBrushColor)
2107             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2108         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2109         {
2110             /* If DC_BRUSH is selected, update driver pen color */
2111             HBRUSH hBrush = CreateSolidBrush( crColor );
2112             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2113             DeleteObject( hBrush );
2114         }
2115
2116         if (crColor != CLR_INVALID)
2117         {
2118             oldClr = dc->dcBrushColor;
2119             dc->dcBrushColor = crColor;
2120         }
2121
2122         release_dc_ptr( dc );
2123     }
2124
2125     return oldClr;
2126 }
2127
2128 /***********************************************************************
2129  *           GetDCPenColor    (GDI32.@)
2130  *
2131  * Retrieves the current pen color for the specified device
2132  * context (DC).
2133  *
2134  */
2135 COLORREF WINAPI GetDCPenColor(HDC hdc)
2136 {
2137     DC *dc;
2138     COLORREF dcPenColor = CLR_INVALID;
2139
2140     TRACE("hdc(%p)\n", hdc);
2141
2142     dc = get_dc_ptr( hdc );
2143     if (dc)
2144     {
2145         dcPenColor = dc->dcPenColor;
2146         release_dc_ptr( dc );
2147     }
2148
2149     return dcPenColor;
2150 }
2151
2152 /***********************************************************************
2153  *           SetDCPenColor    (GDI32.@)
2154  *
2155  * Sets the current device context (DC) pen color to the specified
2156  * color value. If the device cannot represent the specified color
2157  * value, the color is set to the nearest physical color.
2158  *
2159  */
2160 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2161 {
2162     DC *dc;
2163     COLORREF oldClr = CLR_INVALID;
2164
2165     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2166
2167     dc = get_dc_ptr( hdc );
2168     if (dc)
2169     {
2170         if (dc->funcs->pSetDCPenColor)
2171             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2172         else if (dc->hPen == GetStockObject( DC_PEN ))
2173         {
2174             /* If DC_PEN is selected, update the driver pen color */
2175             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2176             HPEN hPen = CreatePenIndirect( &logpen );
2177             dc->funcs->pSelectPen( dc->physDev, hPen );
2178             DeleteObject( hPen );
2179         }
2180
2181         if (crColor != CLR_INVALID)
2182         {
2183             oldClr = dc->dcPenColor;
2184             dc->dcPenColor = crColor;
2185         }
2186
2187         release_dc_ptr( dc );
2188     }
2189
2190     return oldClr;
2191 }
2192
2193 /***********************************************************************
2194  *           CancelDC    (GDI32.@)
2195  */
2196 BOOL WINAPI CancelDC(HDC hdc)
2197 {
2198     FIXME("stub\n");
2199     return TRUE;
2200 }
2201
2202 /***********************************************************************
2203  *           SetVirtualResolution   (GDI32.@)
2204  *
2205  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
2206  */
2207 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
2208 {
2209     FIXME("(%p %08x %08x %08x %08x): stub!\n", hdc, dw2, dw3, dw4, dw5);
2210     return FALSE;
2211 }
2212
2213 /*******************************************************************
2214  *      GetMiterLimit [GDI32.@]
2215  *
2216  *
2217  */
2218 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2219 {
2220     BOOL bRet = FALSE;
2221     DC *dc;
2222
2223     TRACE("(%p,%p)\n", hdc, peLimit);
2224
2225     dc = get_dc_ptr( hdc );
2226     if (dc)
2227     {
2228         if (peLimit)
2229             *peLimit = dc->miterLimit;
2230
2231         release_dc_ptr( dc );
2232         bRet = TRUE;
2233     }
2234     return bRet;
2235 }
2236
2237 /*******************************************************************
2238  *      SetMiterLimit [GDI32.@]
2239  *
2240  *
2241  */
2242 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2243 {
2244     BOOL bRet = FALSE;
2245     DC *dc;
2246
2247     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2248
2249     dc = get_dc_ptr( hdc );
2250     if (dc)
2251     {
2252         if (peOldLimit)
2253             *peOldLimit = dc->miterLimit;
2254         dc->miterLimit = eNewLimit;
2255         release_dc_ptr( dc );
2256         bRet = TRUE;
2257     }
2258     return bRet;
2259 }
2260
2261 /*******************************************************************
2262  *      GdiIsMetaPrintDC [GDI32.@]
2263  */
2264 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2265 {
2266     FIXME("%p\n", hdc);
2267     return FALSE;
2268 }
2269
2270 /*******************************************************************
2271  *      GdiIsMetaFileDC [GDI32.@]
2272  */
2273 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2274 {
2275     TRACE("%p\n", hdc);
2276
2277     switch( GetObjectType( hdc ) )
2278     {
2279     case OBJ_METADC:
2280     case OBJ_ENHMETADC:
2281         return TRUE;
2282     }
2283     return FALSE;
2284 }
2285
2286 /*******************************************************************
2287  *      GdiIsPlayMetafileDC [GDI32.@]
2288  */
2289 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2290 {
2291     FIXME("%p\n", hdc);
2292     return FALSE;
2293 }