dlls/gdi/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winreg.h"
  30 #include "winternl.h"
  31 #include "winerror.h"
  32 #include "wownt32.h"
  33 #include "wine/winuser16.h"
  34 #include "gdi.h"
  35 #include "gdi_private.h"
  36 #include "wine/unicode.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  40
  41 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  42
  43 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj );
  44
  45 static const struct gdi_obj_funcs dc_funcs =
  46 {
  47     NULL,             /* pSelectObject */
  48     NULL,             /* pGetObject16 */
  49     NULL,             /* pGetObjectA */
  50     NULL,             /* pGetObjectW */
  51     NULL,             /* pUnrealizeObject */
  52     DC_DeleteObject   /* pDeleteObject */
  53 };
  54
  55 /***********************************************************************
  56  *           DC_AllocDC
  57  */
  58 DC *DC_AllocDC( const DC_FUNCTIONS *funcs, WORD magic )
  59 {
  60     HDC hdc;
  61     DC *dc;
  62
  63     if (!(dc = GDI_AllocObject( sizeof(*dc), magic, (HGDIOBJ*)&hdc, &dc_funcs ))) return NULL;
  64
  65     dc->hSelf               = hdc;
  66     dc->funcs               = funcs;
  67     dc->physDev             = NULL;
  68     dc->saveLevel           = 0;
  69     dc->saved_dc            = 0;
  70     dc->dwHookData          = 0;
  71     dc->hookProc            = NULL;
  72     dc->hookThunk           = NULL;
  73     dc->wndOrgX             = 0;
  74     dc->wndOrgY             = 0;
  75     dc->wndExtX             = 1;
  76     dc->wndExtY             = 1;
  77     dc->vportOrgX           = 0;
  78     dc->vportOrgY           = 0;
  79     dc->vportExtX           = 1;
  80     dc->vportExtY           = 1;
  81     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  82     dc->flags               = 0;
  83     dc->layout              = 0;
  84     dc->hClipRgn            = 0;
  85     dc->hMetaRgn            = 0;
  86     dc->hMetaClipRgn        = 0;
  87     dc->hVisRgn             = 0;
  88     dc->hPen                = GetStockObject( BLACK_PEN );
  89     dc->hBrush              = GetStockObject( WHITE_BRUSH );
  90     dc->hFont               = GetStockObject( SYSTEM_FONT );
  91     dc->hBitmap             = 0;
  92     dc->hDevice             = 0;
  93     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
  94     dc->gdiFont             = 0;
  95     dc->ROPmode             = R2_COPYPEN;
  96     dc->polyFillMode        = ALTERNATE;
  97     dc->stretchBltMode      = BLACKONWHITE;
  98     dc->relAbsMode          = ABSOLUTE;
  99     dc->backgroundMode      = OPAQUE;
 100     dc->backgroundColor     = RGB( 255, 255, 255 );
 101     dc->dcBrushColor        = RGB( 255, 255, 255 );
 102     dc->dcPenColor          = RGB( 0, 0, 0 );
 103     dc->textColor           = RGB( 0, 0, 0 );
 104     dc->brushOrgX           = 0;
 105     dc->brushOrgY           = 0;
 106     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 107     dc->charExtra           = 0;
 108     dc->breakExtra          = 0;
 109     dc->breakRem            = 0;
 110     dc->MapMode             = MM_TEXT;
 111     dc->GraphicsMode        = GM_COMPATIBLE;
 112     dc->pAbortProc          = NULL;
 113     dc->CursPosX            = 0;
 114     dc->CursPosY            = 0;
 115     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 116     dc->xformWorld2Wnd.eM11 = 1.0f;
 117     dc->xformWorld2Wnd.eM12 = 0.0f;
 118     dc->xformWorld2Wnd.eM21 = 0.0f;
 119     dc->xformWorld2Wnd.eM22 = 1.0f;
 120     dc->xformWorld2Wnd.eDx  = 0.0f;
 121     dc->xformWorld2Wnd.eDy  = 0.0f;
 122     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 123     dc->xformVport2World    = dc->xformWorld2Wnd;
 124     dc->vport2WorldValid    = TRUE;
 125     dc->BoundsRect.left     = 0;
 126     dc->BoundsRect.top      = 0;
 127     dc->BoundsRect.right    = 0;
 128     dc->BoundsRect.bottom   = 0;
 129     dc->saved_visrgn        = NULL;
 130     PATH_InitGdiPath(&dc->path);
 131     return dc;
 132 }
 133
 134
 135
 136 /***********************************************************************
 137  *           DC_GetDCPtr
 138  */
 139 DC *DC_GetDCPtr( HDC hdc )
 140 {
 141     GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
 142     if (!ptr) return NULL;
 143     if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
 144         (GDIMAGIC(ptr->wMagic) == MEMORY_DC_MAGIC) ||
 145         (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
 146         (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
 147         return (DC *)ptr;
 148     GDI_ReleaseObj( hdc );
 149     SetLastError( ERROR_INVALID_HANDLE );
 150     return NULL;
 151 }
 152
 153 /***********************************************************************
 154  *           DC_GetDCUpdate
 155  *
 156  * Retrieve a DC ptr while making sure the visRgn is updated.
 157  * This function may call up to USER so the GDI lock should _not_
 158  * be held when calling it.
 159  */
 160 DC *DC_GetDCUpdate( HDC hdc )
 161 {
 162     DC *dc = DC_GetDCPtr( hdc );
 163     if (!dc) return NULL;
 164     while (dc->flags & DC_DIRTY)
 165     {
 166         DCHOOKPROC proc = dc->hookThunk;
 167         dc->flags &= ~DC_DIRTY;
 168         if (proc)
 169         {
 170             DWORD data = dc->dwHookData;
 171             GDI_ReleaseObj( hdc );
 172             proc( HDC_16(hdc), DCHC_INVALIDVISRGN, data, 0 );
 173             if (!(dc = DC_GetDCPtr( hdc ))) break;
 174             /* otherwise restart the loop in case it became dirty again in the meantime */
 175         }
 176     }
 177     return dc;
 178 }
 179
 180
 181 /***********************************************************************
 182  *           DC_DeleteObject
 183  */
 184 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj )
 185 {
 186     GDI_ReleaseObj( handle );
 187     return DeleteDC( handle );
 188 }
 189
 190
 191 /***********************************************************************
 192  *           DC_InitDC
 193  *
 194  * Setup device-specific DC values for a newly created DC.
 195  */
 196 void DC_InitDC( DC* dc )
 197 {
 198     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 199     SetTextColor( dc->hSelf, dc->textColor );
 200     SetBkColor( dc->hSelf, dc->backgroundColor );
 201     SelectObject( dc->hSelf, dc->hPen );
 202     SelectObject( dc->hSelf, dc->hBrush );
 203     SelectObject( dc->hSelf, dc->hFont );
 204     CLIPPING_UpdateGCRegion( dc );
 205 }
 206
 207
 208 /***********************************************************************
 209  *           DC_InvertXform
 210  *
 211  * Computes the inverse of the transformation xformSrc and stores it to
 212  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 213  * is singular.
 214  */
 215 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 216 {
 217     FLOAT determinant;
 218
 219     determinant = xformSrc->eM11*xformSrc->eM22 -
 220         xformSrc->eM12*xformSrc->eM21;
 221     if (determinant > -1e-12 && determinant < 1e-12)
 222         return FALSE;
 223
 224     xformDest->eM11 =  xformSrc->eM22 / determinant;
 225     xformDest->eM12 = -xformSrc->eM12 / determinant;
 226     xformDest->eM21 = -xformSrc->eM21 / determinant;
 227     xformDest->eM22 =  xformSrc->eM11 / determinant;
 228     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 229                        xformSrc->eDy * xformDest->eM21;
 230     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 231                        xformSrc->eDy * xformDest->eM22;
 232
 233     return TRUE;
 234 }
 235
 236
 237 /***********************************************************************
 238  *           DC_UpdateXforms
 239  *
 240  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 241  * fields of the specified DC by creating a transformation that
 242  * represents the current mapping mode and combining it with the DC's
 243  * world transform. This function should be called whenever the
 244  * parameters associated with the mapping mode (window and viewport
 245  * extents and origins) or the world transform change.
 246  */
 247 void DC_UpdateXforms( DC *dc )
 248 {
 249     XFORM xformWnd2Vport, oldworld2vport;
 250     FLOAT scaleX, scaleY;
 251
 252     /* Construct a transformation to do the window-to-viewport conversion */
 253     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 254     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 255     xformWnd2Vport.eM11 = scaleX;
 256     xformWnd2Vport.eM12 = 0.0;
 257     xformWnd2Vport.eM21 = 0.0;
 258     xformWnd2Vport.eM22 = scaleY;
 259     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 260         scaleX * (FLOAT)dc->wndOrgX;
 261     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 262         scaleY * (FLOAT)dc->wndOrgY;
 263
 264     oldworld2vport = dc->xformWorld2Vport;
 265     /* Combine with the world transformation */
 266     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 267         &xformWnd2Vport );
 268
 269     /* Create inverse of world-to-viewport transformation */
 270     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 271         &dc->xformVport2World );
 272
 273     /* Reselect the font and pen back into the dc so that the size
 274        gets updated. */
 275     if(memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)))
 276     {
 277         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 278         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 279     }
 280 }
 281
 282
 283 /***********************************************************************
 284  *           GetDCState   (Not a Windows API)
 285  */
 286 HDC WINAPI GetDCState( HDC hdc )
 287 {
 288     DC * newdc, * dc;
 289     HGDIOBJ handle;
 290
 291     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 292     if (!(newdc = GDI_AllocObject( sizeof(DC), GDIMAGIC(dc->header.wMagic), &handle, &dc_funcs )))
 293     {
 294       GDI_ReleaseObj( hdc );
 295       return 0;
 296     }
 297     TRACE("(%p): returning %p\n", hdc, handle );
 298
 299     newdc->flags            = dc->flags | DC_SAVED;
 300     newdc->layout           = dc->layout;
 301     newdc->hPen             = dc->hPen;
 302     newdc->hBrush           = dc->hBrush;
 303     newdc->hFont            = dc->hFont;
 304     newdc->hBitmap          = dc->hBitmap;
 305     newdc->hDevice          = dc->hDevice;
 306     newdc->hPalette         = dc->hPalette;
 307     newdc->ROPmode          = dc->ROPmode;
 308     newdc->polyFillMode     = dc->polyFillMode;
 309     newdc->stretchBltMode   = dc->stretchBltMode;
 310     newdc->relAbsMode       = dc->relAbsMode;
 311     newdc->backgroundMode   = dc->backgroundMode;
 312     newdc->backgroundColor  = dc->backgroundColor;
 313     newdc->textColor        = dc->textColor;
 314     newdc->dcBrushColor     = dc->dcBrushColor;
 315     newdc->dcPenColor       = dc->dcPenColor;
 316     newdc->brushOrgX        = dc->brushOrgX;
 317     newdc->brushOrgY        = dc->brushOrgY;
 318     newdc->textAlign        = dc->textAlign;
 319     newdc->charExtra        = dc->charExtra;
 320     newdc->breakExtra       = dc->breakExtra;
 321     newdc->breakRem         = dc->breakRem;
 322     newdc->MapMode          = dc->MapMode;
 323     newdc->GraphicsMode     = dc->GraphicsMode;
 324     newdc->CursPosX         = dc->CursPosX;
 325     newdc->CursPosY         = dc->CursPosY;
 326     newdc->ArcDirection     = dc->ArcDirection;
 327     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 328     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 329     newdc->xformVport2World = dc->xformVport2World;
 330     newdc->vport2WorldValid = dc->vport2WorldValid;
 331     newdc->wndOrgX          = dc->wndOrgX;
 332     newdc->wndOrgY          = dc->wndOrgY;
 333     newdc->wndExtX          = dc->wndExtX;
 334     newdc->wndExtY          = dc->wndExtY;
 335     newdc->vportOrgX        = dc->vportOrgX;
 336     newdc->vportOrgY        = dc->vportOrgY;
 337     newdc->vportExtX        = dc->vportExtX;
 338     newdc->vportExtY        = dc->vportExtY;
 339     newdc->BoundsRect       = dc->BoundsRect;
 340
 341     newdc->hSelf = (HDC)handle;
 342     newdc->saveLevel = 0;
 343     newdc->saved_dc  = 0;
 344
 345     PATH_InitGdiPath( &newdc->path );
 346
 347     newdc->pAbortProc = NULL;
 348     newdc->hookThunk  = NULL;
 349     newdc->hookProc   = 0;
 350     newdc->saved_visrgn = NULL;
 351
 352     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 353
 354     newdc->hVisRgn      = 0;
 355     newdc->hClipRgn     = 0;
 356     newdc->hMetaRgn     = 0;
 357     newdc->hMetaClipRgn = 0;
 358     if (dc->hClipRgn)
 359     {
 360         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 361         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 362     }
 363     if (dc->hMetaRgn)
 364     {
 365         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 366         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 367     }
 368     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 369
 370     if(dc->gdiFont) {
 371         newdc->gdiFont = dc->gdiFont;
 372     } else
 373         newdc->gdiFont = 0;
 374
 375     GDI_ReleaseObj( handle );
 376     GDI_ReleaseObj( hdc );
 377     return handle;
 378 }
 379
 380
 381 /***********************************************************************
 382  *           SetDCState   (Not a Windows API)
 383  */
 384 void WINAPI SetDCState( HDC hdc, HDC hdcs )
 385 {
 386     DC *dc, *dcs;
 387
 388     if (!(dc = DC_GetDCUpdate( hdc ))) return;
 389     if (!(dcs = DC_GetDCPtr( hdcs )))
 390     {
 391       GDI_ReleaseObj( hdc );
 392       return;
 393     }
 394     if (!dcs->flags & DC_SAVED)
 395     {
 396       GDI_ReleaseObj( hdc );
 397       GDI_ReleaseObj( hdcs );
 398       return;
 399     }
 400     TRACE("%p %p\n", hdc, hdcs );
 401
 402     dc->flags            = dcs->flags & ~(DC_SAVED | DC_DIRTY);
 403     dc->layout           = dcs->layout;
 404     dc->hDevice          = dcs->hDevice;
 405     dc->ROPmode          = dcs->ROPmode;
 406     dc->polyFillMode     = dcs->polyFillMode;
 407     dc->stretchBltMode   = dcs->stretchBltMode;
 408     dc->relAbsMode       = dcs->relAbsMode;
 409     dc->backgroundMode   = dcs->backgroundMode;
 410     dc->backgroundColor  = dcs->backgroundColor;
 411     dc->textColor        = dcs->textColor;
 412     dc->dcBrushColor     = dcs->dcBrushColor;
 413     dc->dcPenColor       = dcs->dcPenColor;
 414     dc->brushOrgX        = dcs->brushOrgX;
 415     dc->brushOrgY        = dcs->brushOrgY;
 416     dc->textAlign        = dcs->textAlign;
 417     dc->charExtra        = dcs->charExtra;
 418     dc->breakExtra       = dcs->breakExtra;
 419     dc->breakRem         = dcs->breakRem;
 420     dc->MapMode          = dcs->MapMode;
 421     dc->GraphicsMode     = dcs->GraphicsMode;
 422     dc->CursPosX         = dcs->CursPosX;
 423     dc->CursPosY         = dcs->CursPosY;
 424     dc->ArcDirection     = dcs->ArcDirection;
 425     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 426     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 427     dc->xformVport2World = dcs->xformVport2World;
 428     dc->vport2WorldValid = dcs->vport2WorldValid;
 429     dc->BoundsRect       = dcs->BoundsRect;
 430
 431     dc->wndOrgX          = dcs->wndOrgX;
 432     dc->wndOrgY          = dcs->wndOrgY;
 433     dc->wndExtX          = dcs->wndExtX;
 434     dc->wndExtY          = dcs->wndExtY;
 435     dc->vportOrgX        = dcs->vportOrgX;
 436     dc->vportOrgY        = dcs->vportOrgY;
 437     dc->vportExtX        = dcs->vportExtX;
 438     dc->vportExtY        = dcs->vportExtY;
 439
 440     if (dcs->hClipRgn)
 441     {
 442         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 443         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 444     }
 445     else
 446     {
 447         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 448         dc->hClipRgn = 0;
 449     }
 450     if (dcs->hMetaRgn)
 451     {
 452         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 453         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 454     }
 455     else
 456     {
 457         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 458         dc->hMetaRgn = 0;
 459     }
 460     CLIPPING_UpdateGCRegion( dc );
 461
 462     SelectObject( hdc, dcs->hBitmap );
 463     SelectObject( hdc, dcs->hBrush );
 464     SelectObject( hdc, dcs->hFont );
 465     SelectObject( hdc, dcs->hPen );
 466     SetBkColor( hdc, dcs->backgroundColor);
 467     SetTextColor( hdc, dcs->textColor);
 468     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 469     GDI_ReleaseObj( hdcs );
 470     GDI_ReleaseObj( hdc );
 471 }
 472
 473
 474 /***********************************************************************
 475  *           GetDCState   (GDI.179)
 476  */
 477 HDC16 WINAPI GetDCState16( HDC16 hdc )
 478 {
 479     return HDC_16( GetDCState( HDC_32(hdc) ));
 480 }
 481
 482
 483 /***********************************************************************
 484  *           SetDCState   (GDI.180)
 485  */
 486 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 487 {
 488     SetDCState( HDC_32(hdc), HDC_32(hdcs) );
 489 }
 490
 491
 492 /***********************************************************************
 493  *           SaveDC    (GDI32.@)
 494  */
 495 INT WINAPI SaveDC( HDC hdc )
 496 {
 497     HDC hdcs;
 498     DC * dc, * dcs;
 499     INT ret;
 500
 501     dc = DC_GetDCPtr( hdc );
 502     if (!dc) return 0;
 503
 504     if(dc->funcs->pSaveDC)
 505     {
 506         ret = dc->funcs->pSaveDC( dc->physDev );
 507         GDI_ReleaseObj( hdc );
 508         return ret;
 509     }
 510
 511     if (!(hdcs = GetDCState( hdc )))
 512     {
 513       GDI_ReleaseObj( hdc );
 514       return 0;
 515     }
 516     dcs = DC_GetDCPtr( hdcs );
 517
 518     /* Copy path. The reason why path saving / restoring is in SaveDC/
 519      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 520      * functions are only in Win16 (which doesn't have paths) and that
 521      * SetDCState doesn't allow us to signal an error (which can happen
 522      * when copying paths).
 523      */
 524     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 525     {
 526         GDI_ReleaseObj( hdc );
 527         GDI_ReleaseObj( hdcs );
 528         DeleteDC( hdcs );
 529         return 0;
 530     }
 531
 532     dcs->saved_dc = dc->saved_dc;
 533     dc->saved_dc = hdcs;
 534     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 535     ret = ++dc->saveLevel;
 536     GDI_ReleaseObj( hdcs );
 537     GDI_ReleaseObj( hdc );
 538     return ret;
 539 }
 540
 541
 542 /***********************************************************************
 543  *           RestoreDC    (GDI32.@)
 544  */
 545 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 546 {
 547     DC * dc, * dcs;
 548     BOOL success;
 549
 550     TRACE("%p %d\n", hdc, level );
 551     dc = DC_GetDCUpdate( hdc );
 552     if(!dc) return FALSE;
 553     if(dc->funcs->pRestoreDC)
 554     {
 555         success = dc->funcs->pRestoreDC( dc->physDev, level );
 556         GDI_ReleaseObj( hdc );
 557         return success;
 558     }
 559
 560     if (level == -1) level = dc->saveLevel;
 561     if ((level < 1)
 562             /* This pair of checks disagrees with MSDN "Platform SDK:
 563                Windows GDI" July 2000 which says all negative values
 564                for level will be interpreted as an instance relative
 565                to the current state.  Restricting it to just -1 does
 566                not satisfy this */
 567         || (level > dc->saveLevel))
 568     {
 569         GDI_ReleaseObj( hdc );
 570         return FALSE;
 571     }
 572
 573     success=TRUE;
 574     while (dc->saveLevel >= level)
 575     {
 576         HDC hdcs = dc->saved_dc;
 577         if (!(dcs = DC_GetDCPtr( hdcs )))
 578         {
 579           GDI_ReleaseObj( hdc );
 580           return FALSE;
 581         }
 582         dc->saved_dc = dcs->saved_dc;
 583         dcs->saved_dc = 0;
 584         if (--dc->saveLevel < level)
 585         {
 586             SetDCState( hdc, hdcs );
 587             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 588                 /* FIXME: This might not be quite right, since we're
 589                  * returning FALSE but still destroying the saved DC state */
 590                 success=FALSE;
 591         }
 592         GDI_ReleaseObj( hdcs );
 593         GDI_ReleaseObj( hdc );
 594         DeleteDC( hdcs );
 595         if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 596     }
 597     GDI_ReleaseObj( hdc );
 598     return success;
 599 }
 600
 601
 602 /***********************************************************************
 603  *           CreateDCW    (GDI32.@)
 604  */
 605 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 606                       const DEVMODEW *initData )
 607 {
 608     HDC hdc;
 609     DC * dc;
 610     const DC_FUNCTIONS *funcs;
 611     WCHAR buf[300];
 612
 613     GDI_CheckNotLock();
 614
 615     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 616     {
 617         if (!driver) return 0;
 618         strcpyW(buf, driver);
 619     }
 620
 621     if (!(funcs = DRIVER_load_driver( buf )))
 622     {
 623         ERR( "no driver found for %s\n", debugstr_w(buf) );
 624         return 0;
 625     }
 626     if (!(dc = DC_AllocDC( funcs, DC_MAGIC )))
 627     {
 628         DRIVER_release_driver( funcs );
 629         return 0;
 630     }
 631     hdc = dc->hSelf;
 632
 633     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 634
 635     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 636           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 637
 638     if (dc->funcs->pCreateDC &&
 639         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 640     {
 641         WARN("creation aborted by device\n" );
 642         GDI_FreeObject( dc->hSelf, dc );
 643         DRIVER_release_driver( funcs );
 644         return 0;
 645     }
 646
 647     dc->hVisRgn = CreateRectRgn( 0, 0, GetDeviceCaps( hdc, HORZRES ),
 648                                  GetDeviceCaps( hdc, VERTRES ) );
 649
 650     DC_InitDC( dc );
 651     GDI_ReleaseObj( hdc );
 652     return hdc;
 653 }
 654
 655
 656 /***********************************************************************
 657  *           CreateDCA    (GDI32.@)
 658  */
 659 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 660                       const DEVMODEA *initData )
 661 {
 662     UNICODE_STRING driverW, deviceW, outputW;
 663     DEVMODEW *initDataW;
 664     HDC ret;
 665
 666     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 667     else driverW.Buffer = NULL;
 668
 669     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 670     else deviceW.Buffer = NULL;
 671
 672     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 673     else outputW.Buffer = NULL;
 674
 675     initDataW = NULL;
 676     if (initData)
 677     {
 678         /* don't convert initData for DISPLAY driver, it's not used */
 679         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 680             initDataW = GdiConvertToDevmodeW(initData);
 681     }
 682
 683     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 684
 685     RtlFreeUnicodeString(&driverW);
 686     RtlFreeUnicodeString(&deviceW);
 687     RtlFreeUnicodeString(&outputW);
 688     HeapFree(GetProcessHeap(), 0, initDataW);
 689     return ret;
 690 }
 691
 692
 693 /***********************************************************************
 694  *           CreateICA    (GDI32.@)
 695  */
 696 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 697                           const DEVMODEA* initData )
 698 {
 699       /* Nothing special yet for ICs */
 700     return CreateDCA( driver, device, output, initData );
 701 }
 702
 703
 704 /***********************************************************************
 705  *           CreateICW    (GDI32.@)
 706  */
 707 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 708                           const DEVMODEW* initData )
 709 {
 710       /* Nothing special yet for ICs */
 711     return CreateDCW( driver, device, output, initData );
 712 }
 713
 714
 715 /***********************************************************************
 716  *           CreateCompatibleDC   (GDI32.@)
 717  */
 718 HDC WINAPI CreateCompatibleDC( HDC hdc )
 719 {
 720     DC *dc, *origDC;
 721     const DC_FUNCTIONS *funcs;
 722     PHYSDEV physDev;
 723
 724     GDI_CheckNotLock();
 725
 726     if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC )))
 727     {
 728         funcs = origDC->funcs;
 729         physDev = origDC->physDev;
 730         GDI_ReleaseObj( hdc ); /* can't hold the lock while loading the driver */
 731         funcs = DRIVER_get_driver( funcs );
 732     }
 733     else
 734     {
 735         funcs = DRIVER_load_driver( displayW );
 736         physDev = NULL;
 737     }
 738
 739     if (!funcs) return 0;
 740
 741     if (!(dc = DC_AllocDC( funcs, MEMORY_DC_MAGIC )))
 742     {
 743         DRIVER_release_driver( funcs );
 744         return 0;
 745     }
 746
 747     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 748
 749     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 750
 751     /* Copy the driver-specific physical device info into
 752      * the new DC. The driver may use this read-only info
 753      * while creating the compatible DC below. */
 754     dc->physDev = physDev;
 755
 756     if (dc->funcs->pCreateDC &&
 757         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 758     {
 759         WARN("creation aborted by device\n");
 760         GDI_FreeObject( dc->hSelf, dc );
 761         DRIVER_release_driver( funcs );
 762         return 0;
 763     }
 764
 765     dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 );  /* default bitmap is 1x1 */
 766
 767     DC_InitDC( dc );
 768     GDI_ReleaseObj( dc->hSelf );
 769     return dc->hSelf;
 770 }
 771
 772
 773 /***********************************************************************
 774  *           DeleteDC    (GDI32.@)
 775  */
 776 BOOL WINAPI DeleteDC( HDC hdc )
 777 {
 778     const DC_FUNCTIONS *funcs = NULL;
 779     DC * dc;
 780
 781     TRACE("%p\n", hdc );
 782
 783     GDI_CheckNotLock();
 784
 785     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 786
 787     /* Call hook procedure to check whether is it OK to delete this DC */
 788     if (dc->hookThunk)
 789     {
 790         DCHOOKPROC proc = dc->hookThunk;
 791         DWORD data = dc->dwHookData;
 792         GDI_ReleaseObj( hdc );
 793         if (!proc( HDC_16(hdc), DCHC_DELETEDC, data, 0 )) return FALSE;
 794         if (!(dc = DC_GetDCPtr( hdc ))) return TRUE;  /* deleted by the hook */
 795     }
 796
 797     while (dc->saveLevel)
 798     {
 799         DC * dcs;
 800         HDC hdcs = dc->saved_dc;
 801         if (!(dcs = DC_GetDCPtr( hdcs ))) break;
 802         dc->saved_dc = dcs->saved_dc;
 803         dc->saveLevel--;
 804         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 805         if (dcs->hMetaRgn) DeleteObject( dcs->hMetaRgn );
 806         if (dcs->hMetaClipRgn) DeleteObject( dcs->hMetaClipRgn );
 807         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 808         PATH_DestroyGdiPath(&dcs->path);
 809         GDI_FreeObject( hdcs, dcs );
 810     }
 811
 812     if (!(dc->flags & DC_SAVED))
 813     {
 814         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 815         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 816         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 817         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 818         funcs = dc->funcs;
 819         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 820         dc->physDev = NULL;
 821     }
 822
 823     while (dc->saved_visrgn)
 824     {
 825         struct saved_visrgn *next = dc->saved_visrgn->next;
 826         DeleteObject( dc->saved_visrgn->hrgn );
 827         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 828         dc->saved_visrgn = next;
 829     }
 830     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 831     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 832     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 833     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 834     PATH_DestroyGdiPath(&dc->path);
 835
 836     GDI_FreeObject( hdc, dc );
 837     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 838     return TRUE;
 839 }
 840
 841
 842 /***********************************************************************
 843  *           ResetDCW    (GDI32.@)
 844  */
 845 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 846 {
 847     DC *dc;
 848     HDC ret = hdc;
 849
 850     if ((dc = DC_GetDCPtr( hdc )))
 851     {
 852         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 853         GDI_ReleaseObj( hdc );
 854     }
 855     return ret;
 856 }
 857
 858
 859 /***********************************************************************
 860  *           ResetDCA    (GDI32.@)
 861  */
 862 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 863 {
 864     DEVMODEW *devmodeW;
 865     HDC ret;
 866
 867     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 868     else devmodeW = NULL;
 869
 870     ret = ResetDCW(hdc, devmodeW);
 871
 872     HeapFree(GetProcessHeap(), 0, devmodeW);
 873     return ret;
 874 }
 875
 876
 877 /***********************************************************************
 878  *           GetDeviceCaps    (GDI32.@)
 879  */
 880 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 881 {
 882     DC *dc;
 883     INT ret = 0;
 884
 885     if ((dc = DC_GetDCPtr( hdc )))
 886     {
 887         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 888         GDI_ReleaseObj( hdc );
 889     }
 890     return ret;
 891 }
 892
 893
 894 /***********************************************************************
 895  *              GetBkColor (GDI32.@)
 896  */
 897 COLORREF WINAPI GetBkColor( HDC hdc )
 898 {
 899     COLORREF ret = 0;
 900     DC * dc = DC_GetDCPtr( hdc );
 901     if (dc)
 902     {
 903         ret = dc->backgroundColor;
 904         GDI_ReleaseObj( hdc );
 905     }
 906     return ret;
 907 }
 908
 909
 910 /***********************************************************************
 911  *           SetBkColor    (GDI32.@)
 912  */
 913 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 914 {
 915     COLORREF oldColor;
 916     DC * dc = DC_GetDCPtr( hdc );
 917
 918     TRACE("hdc=%p color=0x%08lx\n", hdc, color);
 919
 920     if (!dc) return CLR_INVALID;
 921     oldColor = dc->backgroundColor;
 922     if (dc->funcs->pSetBkColor)
 923     {
 924         color = dc->funcs->pSetBkColor(dc->physDev, color);
 925         if (color == CLR_INVALID)  /* don't change it */
 926         {
 927             color = oldColor;
 928             oldColor = CLR_INVALID;
 929         }
 930     }
 931     dc->backgroundColor = color;
 932     GDI_ReleaseObj( hdc );
 933     return oldColor;
 934 }
 935
 936
 937 /***********************************************************************
 938  *              GetTextColor (GDI32.@)
 939  */
 940 COLORREF WINAPI GetTextColor( HDC hdc )
 941 {
 942     COLORREF ret = 0;
 943     DC * dc = DC_GetDCPtr( hdc );
 944     if (dc)
 945     {
 946         ret = dc->textColor;
 947         GDI_ReleaseObj( hdc );
 948     }
 949     return ret;
 950 }
 951
 952
 953 /***********************************************************************
 954  *           SetTextColor    (GDI32.@)
 955  */
 956 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 957 {
 958     COLORREF oldColor;
 959     DC * dc = DC_GetDCPtr( hdc );
 960
 961     TRACE(" hdc=%p color=0x%08lx\n", hdc, color);
 962
 963     if (!dc) return CLR_INVALID;
 964     oldColor = dc->textColor;
 965     if (dc->funcs->pSetTextColor)
 966     {
 967         color = dc->funcs->pSetTextColor(dc->physDev, color);
 968         if (color == CLR_INVALID)  /* don't change it */
 969         {
 970             color = oldColor;
 971             oldColor = CLR_INVALID;
 972         }
 973     }
 974     dc->textColor = color;
 975     GDI_ReleaseObj( hdc );
 976     return oldColor;
 977 }
 978
 979
 980 /***********************************************************************
 981  *              GetTextAlign (GDI32.@)
 982  */
 983 UINT WINAPI GetTextAlign( HDC hdc )
 984 {
 985     UINT ret = 0;
 986     DC * dc = DC_GetDCPtr( hdc );
 987     if (dc)
 988     {
 989         ret = dc->textAlign;
 990         GDI_ReleaseObj( hdc );
 991     }
 992     return ret;
 993 }
 994
 995
 996 /***********************************************************************
 997  *           SetTextAlign    (GDI32.@)
 998  */
 999 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1000 {
1001     UINT prevAlign;
1002     DC *dc = DC_GetDCPtr( hdc );
1003
1004     TRACE("hdc=%p align=%d\n", hdc, align);
1005
1006     if (!dc) return 0x0;
1007     if (dc->funcs->pSetTextAlign)
1008         prevAlign = dc->funcs->pSetTextAlign(dc->physDev, align);
1009     else {
1010         prevAlign = dc->textAlign;
1011         dc->textAlign = align;
1012     }
1013     GDI_ReleaseObj( hdc );
1014     return prevAlign;
1015 }
1016
1017 /***********************************************************************
1018  *           GetDCOrgEx  (GDI32.@)
1019  */
1020 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1021 {
1022     DC * dc;
1023
1024     if (!lpp) return FALSE;
1025     if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
1026
1027     lpp->x = lpp->y = 0;
1028     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1029     GDI_ReleaseObj( hDC );
1030     return TRUE;
1031 }
1032
1033
1034 /***********************************************************************
1035  *           SetDCOrg   (GDI.117)
1036  */
1037 DWORD WINAPI SetDCOrg16( HDC16 hdc16, INT16 x, INT16 y )
1038 {
1039     DWORD prevOrg = 0;
1040     HDC hdc = HDC_32( hdc16 );
1041     DC *dc = DC_GetDCPtr( hdc );
1042     if (!dc) return 0;
1043     if (dc->funcs->pSetDCOrg) prevOrg = dc->funcs->pSetDCOrg( dc->physDev, x, y );
1044     GDI_ReleaseObj( hdc );
1045     return prevOrg;
1046 }
1047
1048
1049 /***********************************************************************
1050  *              GetGraphicsMode (GDI32.@)
1051  */
1052 INT WINAPI GetGraphicsMode( HDC hdc )
1053 {
1054     INT ret = 0;
1055     DC * dc = DC_GetDCPtr( hdc );
1056     if (dc)
1057     {
1058         ret = dc->GraphicsMode;
1059         GDI_ReleaseObj( hdc );
1060     }
1061     return ret;
1062 }
1063
1064
1065 /***********************************************************************
1066  *           SetGraphicsMode    (GDI32.@)
1067  */
1068 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1069 {
1070     INT ret = 0;
1071     DC *dc = DC_GetDCPtr( hdc );
1072
1073     /* One would think that setting the graphics mode to GM_COMPATIBLE
1074      * would also reset the world transformation matrix to the unity
1075      * matrix. However, in Windows, this is not the case. This doesn't
1076      * make a lot of sense to me, but that's the way it is.
1077      */
1078     if (!dc) return 0;
1079     if ((mode > 0) && (mode <= GM_LAST))
1080     {
1081         ret = dc->GraphicsMode;
1082         dc->GraphicsMode = mode;
1083     }
1084     GDI_ReleaseObj( hdc );
1085     return ret;
1086 }
1087
1088
1089 /***********************************************************************
1090  *              GetArcDirection (GDI32.@)
1091  */
1092 INT WINAPI GetArcDirection( HDC hdc )
1093 {
1094     INT ret = 0;
1095     DC * dc = DC_GetDCPtr( hdc );
1096     if (dc)
1097     {
1098         ret = dc->ArcDirection;
1099         GDI_ReleaseObj( hdc );
1100     }
1101     return ret;
1102 }
1103
1104
1105 /***********************************************************************
1106  *           SetArcDirection    (GDI32.@)
1107  */
1108 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1109 {
1110     DC * dc;
1111     INT nOldDirection = 0;
1112
1113     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1114     {
1115         SetLastError(ERROR_INVALID_PARAMETER);
1116         return 0;
1117     }
1118
1119     if ((dc = DC_GetDCPtr( hdc )))
1120     {
1121         if (dc->funcs->pSetArcDirection)
1122         {
1123             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1124         }
1125         nOldDirection = dc->ArcDirection;
1126         dc->ArcDirection = nDirection;
1127         GDI_ReleaseObj( hdc );
1128     }
1129     return nOldDirection;
1130 }
1131
1132
1133 /***********************************************************************
1134  *           GetWorldTransform    (GDI32.@)
1135  */
1136 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1137 {
1138     DC * dc;
1139     if (!xform) return FALSE;
1140     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1141     *xform = dc->xformWorld2Wnd;
1142     GDI_ReleaseObj( hdc );
1143     return TRUE;
1144 }
1145
1146
1147 /***********************************************************************
1148  *           GetTransform    (GDI32.@)
1149  */
1150 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1151 {
1152     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1153     FIXME("stub: don't know what to do for code %lx\n", unknown );
1154     return FALSE;
1155 }
1156
1157
1158 /***********************************************************************
1159  *           SetWorldTransform    (GDI32.@)
1160  */
1161 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1162 {
1163     BOOL ret = FALSE;
1164     DC *dc = DC_GetDCPtr( hdc );
1165
1166     if (!dc) return FALSE;
1167     if (!xform) goto done;
1168
1169     /* Check that graphics mode is GM_ADVANCED */
1170     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1171
1172     if (dc->funcs->pSetWorldTransform)
1173     {
1174         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1175         if (!ret) goto done;
1176     }
1177
1178     dc->xformWorld2Wnd = *xform;
1179     DC_UpdateXforms( dc );
1180     ret = TRUE;
1181  done:
1182     GDI_ReleaseObj( hdc );
1183     return ret;
1184 }
1185
1186
1187 /****************************************************************************
1188  * ModifyWorldTransform [GDI32.@]
1189  * Modifies the world transformation for a device context.
1190  *
1191  * PARAMS
1192  *    hdc   [I] Handle to device context
1193  *    xform [I] XFORM structure that will be used to modify the world
1194  *              transformation
1195  *    iMode [I] Specifies in what way to modify the world transformation
1196  *              Possible values:
1197  *              MWT_IDENTITY
1198  *                 Resets the world transformation to the identity matrix.
1199  *                 The parameter xform is ignored.
1200  *              MWT_LEFTMULTIPLY
1201  *                 Multiplies xform into the world transformation matrix from
1202  *                 the left.
1203  *              MWT_RIGHTMULTIPLY
1204  *                 Multiplies xform into the world transformation matrix from
1205  *                 the right.
1206  *
1207  * RETURNS
1208  *  Success: TRUE.
1209  *  Failure: FALSE. Use GetLastError() to determine the cause.
1210  */
1211 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1212     DWORD iMode )
1213 {
1214     BOOL ret = FALSE;
1215     DC *dc = DC_GetDCPtr( hdc );
1216
1217     /* Check for illegal parameters */
1218     if (!dc) return FALSE;
1219     if (!xform) goto done;
1220
1221     /* Check that graphics mode is GM_ADVANCED */
1222     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1223
1224     if (dc->funcs->pModifyWorldTransform)
1225     {
1226         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1227         if (!ret) goto done;
1228     }
1229
1230     switch (iMode)
1231     {
1232         case MWT_IDENTITY:
1233             dc->xformWorld2Wnd.eM11 = 1.0f;
1234             dc->xformWorld2Wnd.eM12 = 0.0f;
1235             dc->xformWorld2Wnd.eM21 = 0.0f;
1236             dc->xformWorld2Wnd.eM22 = 1.0f;
1237             dc->xformWorld2Wnd.eDx  = 0.0f;
1238             dc->xformWorld2Wnd.eDy  = 0.0f;
1239             break;
1240         case MWT_LEFTMULTIPLY:
1241             CombineTransform( &dc->xformWorld2Wnd, xform,
1242                 &dc->xformWorld2Wnd );
1243             break;
1244         case MWT_RIGHTMULTIPLY:
1245             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1246                 xform );
1247             break;
1248         default:
1249             goto done;
1250     }
1251
1252     DC_UpdateXforms( dc );
1253     ret = TRUE;
1254  done:
1255     GDI_ReleaseObj( hdc );
1256     return ret;
1257 }
1258
1259
1260 /****************************************************************************
1261  * CombineTransform [GDI32.@]
1262  * Combines two transformation matrices.
1263  *
1264  * PARAMS
1265  *    xformResult [O] Stores the result of combining the two matrices
1266  *    xform1      [I] Specifies the first matrix to apply
1267  *    xform2      [I] Specifies the second matrix to apply
1268  *
1269  * REMARKS
1270  *    The same matrix can be passed in for more than one of the parameters.
1271  *
1272  * RETURNS
1273  *  Success: TRUE.
1274  *  Failure: FALSE. Use GetLastError() to determine the cause.
1275  */
1276 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1277     const XFORM *xform2 )
1278 {
1279     XFORM xformTemp;
1280
1281     /* Check for illegal parameters */
1282     if (!xformResult || !xform1 || !xform2)
1283         return FALSE;
1284
1285     /* Create the result in a temporary XFORM, since xformResult may be
1286      * equal to xform1 or xform2 */
1287     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1288                      xform1->eM12 * xform2->eM21;
1289     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1290                      xform1->eM12 * xform2->eM22;
1291     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1292                      xform1->eM22 * xform2->eM21;
1293     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1294                      xform1->eM22 * xform2->eM22;
1295     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1296                      xform1->eDy  * xform2->eM21 +
1297                      xform2->eDx;
1298     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1299                      xform1->eDy  * xform2->eM22 +
1300                      xform2->eDy;
1301
1302     /* Copy the result to xformResult */
1303     *xformResult = xformTemp;
1304
1305     return TRUE;
1306 }
1307
1308
1309 /***********************************************************************
1310  *           SetDCHook   (GDI32.@)
1311  *
1312  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1313  */
1314 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD dwHookData )
1315 {
1316     DC *dc = GDI_GetObjPtr( hdc, DC_MAGIC );
1317
1318     if (!dc) return FALSE;
1319
1320     if (!(dc->flags & DC_SAVED))
1321     {
1322         dc->dwHookData = dwHookData;
1323         dc->hookThunk = hookProc;
1324     }
1325     GDI_ReleaseObj( hdc );
1326     return TRUE;
1327 }
1328
1329
1330 /* relay function to call the 16-bit DC hook proc */
1331 static BOOL16 WINAPI call_dc_hook16( HDC16 hdc16, WORD code, DWORD data, LPARAM lParam )
1332 {
1333     WORD args[6];
1334     DWORD ret;
1335     FARPROC16 proc = NULL;
1336     HDC hdc = HDC_32( hdc16 );
1337     DC *dc = DC_GetDCPtr( hdc );
1338
1339     if (!dc) return FALSE;
1340     proc = dc->hookProc;
1341     GDI_ReleaseObj( hdc );
1342     if (!proc) return FALSE;
1343     args[5] = hdc16;
1344     args[4] = code;
1345     args[3] = HIWORD(data);
1346     args[2] = LOWORD(data);
1347     args[1] = HIWORD(lParam);
1348     args[0] = LOWORD(lParam);
1349     WOWCallback16Ex( (DWORD)proc, WCB16_PASCAL, sizeof(args), args, &ret );
1350     return LOWORD(ret);
1351 }
1352
1353 /***********************************************************************
1354  *           SetDCHook   (GDI.190)
1355  */
1356 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1357 {
1358     HDC hdc = HDC_32( hdc16 );
1359     DC *dc = DC_GetDCPtr( hdc );
1360     if (!dc) return FALSE;
1361
1362     dc->hookProc = hookProc;
1363     GDI_ReleaseObj( hdc );
1364     return SetDCHook( hdc, call_dc_hook16, dwHookData );
1365 }
1366
1367
1368 /***********************************************************************
1369  *           GetDCHook   (GDI.191)
1370  */
1371 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1372 {
1373     HDC hdc = HDC_32( hdc16 );
1374     DC *dc = DC_GetDCPtr( hdc );
1375     DWORD ret;
1376
1377     if (!dc) return 0;
1378     *phookProc = dc->hookProc;
1379     ret = dc->dwHookData;
1380     GDI_ReleaseObj( hdc );
1381     return ret;
1382 }
1383
1384
1385 /***********************************************************************
1386  *           SetHookFlags   (GDI.192)
1387  */
1388 WORD WINAPI SetHookFlags16(HDC16 hdc16, WORD flags)
1389 {
1390     HDC hdc = HDC_32( hdc16 );
1391     DC *dc = DC_GetDCPtr( hdc );
1392
1393     if( dc )
1394     {
1395         WORD wRet = dc->flags & DC_DIRTY;
1396
1397         /* "Undocumented Windows" info is slightly confusing.
1398          */
1399
1400         TRACE("hDC %p, flags %04x\n",hdc,flags);
1401
1402         if( flags & DCHF_INVALIDATEVISRGN )
1403             dc->flags |= DC_DIRTY;
1404         else if( flags & DCHF_VALIDATEVISRGN || !flags )
1405             dc->flags &= ~DC_DIRTY;
1406         GDI_ReleaseObj( hdc );
1407         return wRet;
1408     }
1409     return 0;
1410 }
1411
1412 /***********************************************************************
1413  *           SetICMMode    (GDI32.@)
1414  */
1415 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1416 {
1417 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1418     if (iEnableICM == ICM_OFF) return ICM_OFF;
1419     if (iEnableICM == ICM_ON) return 0;
1420     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1421     return 0;
1422 }
1423
1424 /***********************************************************************
1425  *           GetDeviceGammaRamp    (GDI32.@)
1426  */
1427 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1428 {
1429     BOOL ret = FALSE;
1430     DC *dc = DC_GetDCPtr( hDC );
1431
1432     if( dc )
1433     {
1434         if (dc->funcs->pGetDeviceGammaRamp)
1435             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1436         GDI_ReleaseObj( hDC );
1437     }
1438     return ret;
1439 }
1440
1441 /***********************************************************************
1442  *           SetDeviceGammaRamp    (GDI32.@)
1443  */
1444 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1445 {
1446     BOOL ret = FALSE;
1447     DC *dc = DC_GetDCPtr( hDC );
1448
1449     if( dc )
1450     {
1451         if (dc->funcs->pSetDeviceGammaRamp)
1452             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1453         GDI_ReleaseObj( hDC );
1454     }
1455     return ret;
1456 }
1457
1458 /***********************************************************************
1459  *           GetColorSpace    (GDI32.@)
1460  */
1461 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1462 {
1463 /*FIXME    Need to to whatever GetColorSpace actually does */
1464     return 0;
1465 }
1466
1467 /***********************************************************************
1468  *           CreateColorSpaceA    (GDI32.@)
1469  */
1470 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1471 {
1472   FIXME( "stub\n" );
1473   return 0;
1474 }
1475
1476 /***********************************************************************
1477  *           CreateColorSpaceW    (GDI32.@)
1478  */
1479 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1480 {
1481   FIXME( "stub\n" );
1482   return 0;
1483 }
1484
1485 /***********************************************************************
1486  *           DeleteColorSpace     (GDI32.@)
1487  */
1488 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1489 {
1490   FIXME( "stub\n" );
1491
1492   return TRUE;
1493 }
1494
1495 /***********************************************************************
1496  *           SetColorSpace     (GDI32.@)
1497  */
1498 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1499 {
1500   FIXME( "stub\n" );
1501
1502   return hColorSpace;
1503 }
1504
1505 /***********************************************************************
1506  *           GetBoundsRect    (GDI32.@)
1507  */
1508 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1509 {
1510     UINT ret;
1511     DC *dc = DC_GetDCPtr( hdc );
1512
1513     if ( !dc ) return 0;
1514
1515     if (rect) *rect = dc->BoundsRect;
1516
1517     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1518
1519     if (flags & DCB_RESET)
1520     {
1521         dc->BoundsRect.left   = 0;
1522         dc->BoundsRect.top    = 0;
1523         dc->BoundsRect.right  = 0;
1524         dc->BoundsRect.bottom = 0;
1525         dc->flags &= ~DC_BOUNDS_SET;
1526     }
1527     GDI_ReleaseObj( hdc );
1528     return ret;
1529 }
1530
1531
1532 /***********************************************************************
1533  *           SetBoundsRect    (GDI32.@)
1534  */
1535 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1536 {
1537     UINT ret;
1538     DC *dc;
1539
1540     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1541     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1542
1543     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1544           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1545
1546     if (flags & DCB_RESET)
1547     {
1548         dc->BoundsRect.left   = 0;
1549         dc->BoundsRect.top    = 0;
1550         dc->BoundsRect.right  = 0;
1551         dc->BoundsRect.bottom = 0;
1552         dc->flags &= ~DC_BOUNDS_SET;
1553     }
1554
1555     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1556     {
1557         if (dc->flags & DC_BOUNDS_SET)
1558         {
1559             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1560             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1561             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1562             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1563         }
1564         else
1565         {
1566             dc->BoundsRect = *rect;
1567             dc->flags |= DC_BOUNDS_SET;
1568         }
1569     }
1570
1571     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1572     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1573
1574     GDI_ReleaseObj( hdc );
1575     return ret;
1576 }
1577
1578
1579 /***********************************************************************
1580  *              GetRelAbs               (GDI32.@)
1581  */
1582 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1583 {
1584     INT ret = 0;
1585     DC *dc = DC_GetDCPtr( hdc );
1586     if (dc) ret = dc->relAbsMode;
1587     GDI_ReleaseObj( hdc );
1588     return ret;
1589 }
1590
1591
1592
1593
1594 /***********************************************************************
1595  *              GetBkMode (GDI32.@)
1596  */
1597 INT WINAPI GetBkMode( HDC hdc )
1598 {
1599     INT ret = 0;
1600     DC * dc = DC_GetDCPtr( hdc );
1601     if (dc)
1602     {
1603         ret = dc->backgroundMode;
1604         GDI_ReleaseObj( hdc );
1605     }
1606     return ret;
1607 }
1608
1609
1610 /***********************************************************************
1611  *              SetBkMode (GDI32.@)
1612  */
1613 INT WINAPI SetBkMode( HDC hdc, INT mode )
1614 {
1615     INT ret;
1616     DC *dc;
1617     if ((mode <= 0) || (mode > BKMODE_LAST))
1618     {
1619         SetLastError(ERROR_INVALID_PARAMETER);
1620         return 0;
1621     }
1622     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1623     if (dc->funcs->pSetBkMode)
1624         ret = dc->funcs->pSetBkMode( dc->physDev, mode );
1625     else
1626     {
1627         ret = dc->backgroundMode;
1628         dc->backgroundMode = mode;
1629     }
1630     GDI_ReleaseObj( hdc );
1631     return ret;
1632 }
1633
1634
1635 /***********************************************************************
1636  *              GetROP2 (GDI32.@)
1637  */
1638 INT WINAPI GetROP2( HDC hdc )
1639 {
1640     INT ret = 0;
1641     DC * dc = DC_GetDCPtr( hdc );
1642     if (dc)
1643     {
1644         ret = dc->ROPmode;
1645         GDI_ReleaseObj( hdc );
1646     }
1647     return ret;
1648 }
1649
1650
1651 /***********************************************************************
1652  *              SetROP2 (GDI32.@)
1653  */
1654 INT WINAPI SetROP2( HDC hdc, INT mode )
1655 {
1656     INT ret;
1657     DC *dc;
1658     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1659     {
1660         SetLastError(ERROR_INVALID_PARAMETER);
1661         return 0;
1662     }
1663     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1664     if (dc->funcs->pSetROP2)
1665         ret = dc->funcs->pSetROP2( dc->physDev, mode );
1666     else
1667     {
1668         ret = dc->ROPmode;
1669         dc->ROPmode = mode;
1670     }
1671     GDI_ReleaseObj( hdc );
1672     return ret;
1673 }
1674
1675
1676 /***********************************************************************
1677  *              SetRelAbs (GDI32.@)
1678  */
1679 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1680 {
1681     INT ret;
1682     DC *dc;
1683     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1684     {
1685         SetLastError(ERROR_INVALID_PARAMETER);
1686         return 0;
1687     }
1688     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1689     if (dc->funcs->pSetRelAbs)
1690         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1691     else
1692     {
1693         ret = dc->relAbsMode;
1694         dc->relAbsMode = mode;
1695     }
1696     GDI_ReleaseObj( hdc );
1697     return ret;
1698 }
1699
1700
1701 /***********************************************************************
1702  *              GetPolyFillMode (GDI32.@)
1703  */
1704 INT WINAPI GetPolyFillMode( HDC hdc )
1705 {
1706     INT ret = 0;
1707     DC * dc = DC_GetDCPtr( hdc );
1708     if (dc)
1709     {
1710         ret = dc->polyFillMode;
1711         GDI_ReleaseObj( hdc );
1712     }
1713     return ret;
1714 }
1715
1716
1717 /***********************************************************************
1718  *              SetPolyFillMode (GDI32.@)
1719  */
1720 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1721 {
1722     INT ret;
1723     DC *dc;
1724     if ((mode <= 0) || (mode > POLYFILL_LAST))
1725     {
1726         SetLastError(ERROR_INVALID_PARAMETER);
1727         return 0;
1728     }
1729     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1730     if (dc->funcs->pSetPolyFillMode)
1731         ret = dc->funcs->pSetPolyFillMode( dc->physDev, mode );
1732     else
1733     {
1734         ret = dc->polyFillMode;
1735         dc->polyFillMode = mode;
1736     }
1737     GDI_ReleaseObj( hdc );
1738     return ret;
1739 }
1740
1741
1742 /***********************************************************************
1743  *              GetStretchBltMode (GDI32.@)
1744  */
1745 INT WINAPI GetStretchBltMode( HDC hdc )
1746 {
1747     INT ret = 0;
1748     DC * dc = DC_GetDCPtr( hdc );
1749     if (dc)
1750     {
1751         ret = dc->stretchBltMode;
1752         GDI_ReleaseObj( hdc );
1753     }
1754     return ret;
1755 }
1756
1757
1758 /***********************************************************************
1759  *              SetStretchBltMode (GDI32.@)
1760  */
1761 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1762 {
1763     INT ret;
1764     DC *dc;
1765     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1766     {
1767         SetLastError(ERROR_INVALID_PARAMETER);
1768         return 0;
1769     }
1770     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1771     if (dc->funcs->pSetStretchBltMode)
1772         ret = dc->funcs->pSetStretchBltMode( dc->physDev, mode );
1773     else
1774     {
1775         ret = dc->stretchBltMode;
1776         dc->stretchBltMode = mode;
1777     }
1778     GDI_ReleaseObj( hdc );
1779     return ret;
1780 }
1781
1782
1783 /***********************************************************************
1784  *              GetMapMode (GDI32.@)
1785  */
1786 INT WINAPI GetMapMode( HDC hdc )
1787 {
1788     INT ret = 0;
1789     DC * dc = DC_GetDCPtr( hdc );
1790     if (dc)
1791     {
1792         ret = dc->MapMode;
1793         GDI_ReleaseObj( hdc );
1794     }
1795     return ret;
1796 }
1797
1798
1799 /***********************************************************************
1800  *              GetBrushOrgEx (GDI32.@)
1801  */
1802 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1803 {
1804     DC * dc = DC_GetDCPtr( hdc );
1805     if (!dc) return FALSE;
1806     pt->x = dc->brushOrgX;
1807     pt->y = dc->brushOrgY;
1808     GDI_ReleaseObj( hdc );
1809     return TRUE;
1810 }
1811
1812
1813 /***********************************************************************
1814  *              GetCurrentPositionEx (GDI32.@)
1815  */
1816 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1817 {
1818     DC * dc = DC_GetDCPtr( hdc );
1819     if (!dc) return FALSE;
1820     pt->x = dc->CursPosX;
1821     pt->y = dc->CursPosY;
1822     GDI_ReleaseObj( hdc );
1823     return TRUE;
1824 }
1825
1826
1827 /***********************************************************************
1828  *              GetViewportExtEx (GDI32.@)
1829  */
1830 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1831 {
1832     DC * dc = DC_GetDCPtr( hdc );
1833     if (!dc) return FALSE;
1834     size->cx = dc->vportExtX;
1835     size->cy = dc->vportExtY;
1836     GDI_ReleaseObj( hdc );
1837     return TRUE;
1838 }
1839
1840
1841 /***********************************************************************
1842  *              GetViewportOrgEx (GDI32.@)
1843  */
1844 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1845 {
1846     DC * dc = DC_GetDCPtr( hdc );
1847     if (!dc) return FALSE;
1848     pt->x = dc->vportOrgX;
1849     pt->y = dc->vportOrgY;
1850     GDI_ReleaseObj( hdc );
1851     return TRUE;
1852 }
1853
1854
1855 /***********************************************************************
1856  *              GetWindowExtEx (GDI32.@)
1857  */
1858 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1859 {
1860     DC * dc = DC_GetDCPtr( hdc );
1861     if (!dc) return FALSE;
1862     size->cx = dc->wndExtX;
1863     size->cy = dc->wndExtY;
1864     GDI_ReleaseObj( hdc );
1865     return TRUE;
1866 }
1867
1868
1869 /***********************************************************************
1870  *              GetWindowOrgEx (GDI32.@)
1871  */
1872 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1873 {
1874     DC * dc = DC_GetDCPtr( hdc );
1875     if (!dc) return FALSE;
1876     pt->x = dc->wndOrgX;
1877     pt->y = dc->wndOrgY;
1878     GDI_ReleaseObj( hdc );
1879     return TRUE;
1880 }
1881
1882
1883 /***********************************************************************
1884  *              InquireVisRgn   (GDI.131)
1885  */
1886 HRGN16 WINAPI InquireVisRgn16( HDC16 hdc )
1887 {
1888     HRGN16 ret = 0;
1889     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
1890     if (dc)
1891     {
1892         ret = HRGN_16(dc->hVisRgn);
1893         GDI_ReleaseObj( HDC_32(hdc) );
1894     }
1895     return ret;
1896 }
1897
1898
1899 /***********************************************************************
1900  *              GetClipRgn (GDI.173)
1901  */
1902 HRGN16 WINAPI GetClipRgn16( HDC16 hdc )
1903 {
1904     HRGN16 ret = 0;
1905     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
1906     if (dc)
1907     {
1908         ret = HRGN_16(dc->hClipRgn);
1909         GDI_ReleaseObj( HDC_32(hdc) );
1910     }
1911     return ret;
1912 }
1913
1914
1915 /***********************************************************************
1916  *           GetLayout    (GDI32.@)
1917  *
1918  * Gets left->right or right->left text layout flags of a dc.
1919  *
1920  */
1921 DWORD WINAPI GetLayout(HDC hdc)
1922 {
1923     DWORD layout = GDI_ERROR;
1924
1925     DC * dc = DC_GetDCPtr( hdc );
1926     if (dc)
1927     {
1928         layout = dc->layout;
1929         GDI_ReleaseObj( hdc );
1930     }
1931
1932     TRACE("hdc : %p, layout : %08lx\n", hdc, layout);
1933
1934     return layout;
1935 }
1936
1937 /***********************************************************************
1938  *           SetLayout    (GDI32.@)
1939  *
1940  * Sets left->right or right->left text layout flags of a dc.
1941  *
1942  */
1943 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1944 {
1945     DWORD oldlayout = GDI_ERROR;
1946
1947     DC * dc = DC_GetDCPtr( hdc );
1948     if (dc)
1949     {
1950         oldlayout = dc->layout;
1951         dc->layout = layout;
1952         GDI_ReleaseObj( hdc );
1953     }
1954
1955     TRACE("hdc : %p, old layout : %08lx, new layout : %08lx\n", hdc, oldlayout, layout);
1956
1957     return oldlayout;
1958 }
1959
1960 /***********************************************************************
1961  *           GetDCBrushColor    (GDI32.@)
1962  *
1963  * Retrieves the current brush color for the specified device
1964  * context (DC).
1965  *
1966  */
1967 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1968 {
1969     DC *dc;
1970     COLORREF dcBrushColor = CLR_INVALID;
1971
1972     TRACE("hdc(%p)\n", hdc);
1973
1974     dc = DC_GetDCPtr( hdc );
1975     if (dc)
1976     {
1977         dcBrushColor = dc->dcBrushColor;
1978         GDI_ReleaseObj( hdc );
1979     }
1980
1981     return dcBrushColor;
1982 }
1983
1984 /***********************************************************************
1985  *           SetDCBrushColor    (GDI32.@)
1986  *
1987  * Sets the current device context (DC) brush color to the specified
1988  * color value. If the device cannot represent the specified color
1989  * value, the color is set to the nearest physical color.
1990  *
1991  */
1992 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1993 {
1994     DC *dc;
1995     COLORREF oldClr = CLR_INVALID;
1996
1997     TRACE("hdc(%p) crColor(%08lx)\n", hdc, crColor);
1998
1999     dc = DC_GetDCPtr( hdc );
2000     if (dc)
2001     {
2002         if (dc->funcs->pSetDCBrushColor)
2003             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2004         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2005         {
2006             /* If DC_BRUSH is selected, update driver pen color */
2007             HBRUSH hBrush = CreateSolidBrush( crColor );
2008             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2009             DeleteObject( hBrush );
2010         }
2011
2012         if (crColor != CLR_INVALID)
2013         {
2014             oldClr = dc->dcBrushColor;
2015             dc->dcBrushColor = crColor;
2016         }
2017
2018         GDI_ReleaseObj( hdc );
2019     }
2020
2021     return oldClr;
2022 }
2023
2024 /***********************************************************************
2025  *           GetDCPenColor    (GDI32.@)
2026  *
2027  * Retrieves the current pen color for the specified device
2028  * context (DC).
2029  *
2030  */
2031 COLORREF WINAPI GetDCPenColor(HDC hdc)
2032 {
2033     DC *dc;
2034     COLORREF dcPenColor = CLR_INVALID;
2035
2036     TRACE("hdc(%p)\n", hdc);
2037
2038     dc = DC_GetDCPtr( hdc );
2039     if (dc)
2040     {
2041         dcPenColor = dc->dcPenColor;
2042         GDI_ReleaseObj( hdc );
2043     }
2044
2045     return dcPenColor;
2046 }
2047
2048 /***********************************************************************
2049  *           SetDCPenColor    (GDI32.@)
2050  *
2051  * Sets the current device context (DC) pen color to the specified
2052  * color value. If the device cannot represent the specified color
2053  * value, the color is set to the nearest physical color.
2054  *
2055  */
2056 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2057 {
2058     DC *dc;
2059     COLORREF oldClr = CLR_INVALID;
2060
2061     TRACE("hdc(%p) crColor(%08lx)\n", hdc, crColor);
2062
2063     dc = DC_GetDCPtr( hdc );
2064     if (dc)
2065     {
2066         if (dc->funcs->pSetDCPenColor)
2067             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2068         else if (dc->hPen == GetStockObject( DC_PEN ))
2069         {
2070             /* If DC_PEN is selected, update the driver pen color */
2071             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2072             HPEN hPen = CreatePenIndirect( &logpen );
2073             dc->funcs->pSelectPen( dc->physDev, hPen );
2074             DeleteObject( hPen );
2075         }
2076
2077         if (crColor != CLR_INVALID)
2078         {
2079             oldClr = dc->dcPenColor;
2080             dc->dcPenColor = crColor;
2081         }
2082
2083         GDI_ReleaseObj( hdc );
2084     }
2085
2086     return oldClr;
2087 }
2088
2089 /***********************************************************************
2090  *           SetVirtualResolution   (GDI32.@)
2091  *
2092  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
2093  */
2094 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
2095 {
2096     FIXME("(%p %08lx %08lx %08lx %08lx): stub!\n", hdc, dw2, dw3, dw4, dw5);
2097     return FALSE;
2098 }
2099
2100 /*******************************************************************
2101  *      GetMiterLimit [GDI32.@]
2102  *
2103  *
2104  */
2105 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2106 {
2107     BOOL bRet = FALSE;
2108     DC *dc;
2109
2110     TRACE("(%p,%p)\n", hdc, peLimit);
2111
2112     dc = DC_GetDCPtr( hdc );
2113     if (dc)
2114     {
2115         if (peLimit)
2116             *peLimit = dc->miterLimit;
2117
2118         GDI_ReleaseObj( hdc );
2119         bRet = TRUE;
2120     }
2121     return bRet;
2122 }
2123
2124 /*******************************************************************
2125  *      SetMiterLimit [GDI32.@]
2126  *
2127  *
2128  */
2129 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2130 {
2131     BOOL bRet = FALSE;
2132     DC *dc;
2133
2134     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2135
2136     dc = DC_GetDCPtr( hdc );
2137     if (dc)
2138     {
2139         if (peOldLimit)
2140             *peOldLimit = dc->miterLimit;
2141         dc->miterLimit = eNewLimit;
2142         GDI_ReleaseObj( hdc );
2143         bRet = TRUE;
2144     }
2145     return bRet;
2146 }
2147
2148 /*******************************************************************
2149  *      GdiIsMetaPrintDC [GDI32.@]
2150  */
2151 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2152 {
2153     FIXME("%p\n", hdc);
2154     return FALSE;
2155 }
2156
2157 /*******************************************************************
2158  *      GdiIsMetaFileDC [GDI32.@]
2159  */
2160 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2161 {
2162     TRACE("%p\n", hdc);
2163
2164     switch( GetObjectType( hdc ) )
2165     {
2166     case OBJ_METADC:
2167     case OBJ_ENHMETADC:
2168         return TRUE;
2169     }
2170     return FALSE;
2171 }
2172
2173 /*******************************************************************
2174  *      GdiIsPlayMetafileDC [GDI32.@]
2175  */
2176 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2177 {
2178     FIXME("%p\n", hdc);
2179     return FALSE;
2180 }