dlls/gdi32/dc.c

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