dlls/gdi32/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "winerror.h"
  33 #include "gdi_private.h"
  34 #include "wine/unicode.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  38
  39 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  40
  41 static BOOL DC_DeleteObject( HGDIOBJ handle );
  42
  43 static const struct gdi_obj_funcs dc_funcs =
  44 {
  45     NULL,             /* pSelectObject */
  46     NULL,             /* pGetObjectA */
  47     NULL,             /* pGetObjectW */
  48     NULL,             /* pUnrealizeObject */
  49     DC_DeleteObject   /* pDeleteObject */
  50 };
  51
  52
  53 static inline DC *get_dc_obj( HDC hdc )
  54 {
  55     DC *dc = GDI_GetObjPtr( hdc, 0 );
  56     if (!dc) return NULL;
  57
  58     if ((dc->header.type != OBJ_DC) &&
  59         (dc->header.type != OBJ_MEMDC) &&
  60         (dc->header.type != OBJ_METADC) &&
  61         (dc->header.type != OBJ_ENHMETADC))
  62     {
  63         GDI_ReleaseObj( hdc );
  64         SetLastError( ERROR_INVALID_HANDLE );
  65         dc = NULL;
  66     }
  67     return dc;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           alloc_dc_ptr
  73  */
  74 DC *alloc_dc_ptr( WORD magic )
  75 {
  76     DC *dc;
  77
  78     if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
  79
  80     dc->nulldrv.funcs       = &null_driver;
  81     dc->nulldrv.next        = NULL;
  82     dc->dibdrv              = NULL;
  83     dc->physDev             = &dc->nulldrv;
  84     dc->thread              = GetCurrentThreadId();
  85     dc->refcount            = 1;
  86     dc->dirty               = 0;
  87     dc->saveLevel           = 0;
  88     dc->saved_dc            = 0;
  89     dc->dwHookData          = 0;
  90     dc->hookProc            = 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->path                = NULL;
 114     dc->font_code_page      = CP_ACP;
 115     dc->ROPmode             = R2_COPYPEN;
 116     dc->polyFillMode        = ALTERNATE;
 117     dc->stretchBltMode      = BLACKONWHITE;
 118     dc->relAbsMode          = ABSOLUTE;
 119     dc->backgroundMode      = OPAQUE;
 120     dc->backgroundColor     = RGB( 255, 255, 255 );
 121     dc->dcBrushColor        = RGB( 255, 255, 255 );
 122     dc->dcPenColor          = RGB( 0, 0, 0 );
 123     dc->textColor           = RGB( 0, 0, 0 );
 124     dc->brushOrgX           = 0;
 125     dc->brushOrgY           = 0;
 126     dc->mapperFlags         = 0;
 127     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 128     dc->charExtra           = 0;
 129     dc->breakExtra          = 0;
 130     dc->breakRem            = 0;
 131     dc->MapMode             = MM_TEXT;
 132     dc->GraphicsMode        = GM_COMPATIBLE;
 133     dc->pAbortProc          = NULL;
 134     dc->CursPosX            = 0;
 135     dc->CursPosY            = 0;
 136     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 137     dc->xformWorld2Wnd.eM11 = 1.0f;
 138     dc->xformWorld2Wnd.eM12 = 0.0f;
 139     dc->xformWorld2Wnd.eM21 = 0.0f;
 140     dc->xformWorld2Wnd.eM22 = 1.0f;
 141     dc->xformWorld2Wnd.eDx  = 0.0f;
 142     dc->xformWorld2Wnd.eDy  = 0.0f;
 143     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 144     dc->xformVport2World    = dc->xformWorld2Wnd;
 145     dc->vport2WorldValid    = TRUE;
 146     dc->BoundsRect.left     = 0;
 147     dc->BoundsRect.top      = 0;
 148     dc->BoundsRect.right    = 0;
 149     dc->BoundsRect.bottom   = 0;
 150
 151     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 152     {
 153         HeapFree( GetProcessHeap(), 0, dc );
 154         return NULL;
 155     }
 156     dc->nulldrv.hdc = dc->hSelf;
 157
 158     if (font_driver && !font_driver->pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 159     {
 160         free_dc_ptr( dc );
 161         return NULL;
 162     }
 163     return dc;
 164 }
 165
 166
 167
 168 /***********************************************************************
 169  *           free_dc_state
 170  */
 171 static void free_dc_state( DC *dc )
 172 {
 173     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 174     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 175     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 176     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 177     if (dc->path) free_gdi_path( dc->path );
 178     HeapFree( GetProcessHeap(), 0, dc );
 179 }
 180
 181
 182 /***********************************************************************
 183  *           free_dc_ptr
 184  */
 185 void free_dc_ptr( DC *dc )
 186 {
 187     assert( dc->refcount == 1 );
 188
 189     while (dc->physDev != &dc->nulldrv)
 190     {
 191         PHYSDEV physdev = pop_dc_driver( &dc->physDev );
 192         physdev->funcs->pDeleteDC( physdev );
 193         if (physdev == dc->dibdrv) dc->dibdrv = NULL;
 194     }
 195     if (dc->dibdrv) dc->dibdrv->funcs->pDeleteDC( dc->dibdrv );
 196     free_gdi_handle( dc->hSelf );
 197     free_dc_state( dc );
 198 }
 199
 200
 201 /***********************************************************************
 202  *           get_dc_ptr
 203  *
 204  * Retrieve a DC pointer but release the GDI lock.
 205  */
 206 DC *get_dc_ptr( HDC hdc )
 207 {
 208     DC *dc = get_dc_obj( hdc );
 209     if (!dc) return NULL;
 210
 211     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 212     {
 213         dc->thread = GetCurrentThreadId();
 214     }
 215     else if (dc->thread != GetCurrentThreadId())
 216     {
 217         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 218         GDI_ReleaseObj( hdc );
 219         return NULL;
 220     }
 221     else InterlockedIncrement( &dc->refcount );
 222
 223     GDI_ReleaseObj( hdc );
 224     return dc;
 225 }
 226
 227
 228 /***********************************************************************
 229  *           release_dc_ptr
 230  */
 231 void release_dc_ptr( DC *dc )
 232 {
 233     LONG ref;
 234
 235     dc->thread = 0;
 236     ref = InterlockedDecrement( &dc->refcount );
 237     assert( ref >= 0 );
 238     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 239 }
 240
 241
 242 /***********************************************************************
 243  *           update_dc
 244  *
 245  * Make sure the DC vis region is up to date.
 246  * This function may call up to USER so the GDI lock should _not_
 247  * be held when calling it.
 248  */
 249 void update_dc( DC *dc )
 250 {
 251     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 252         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 253 }
 254
 255
 256 /***********************************************************************
 257  *           DC_DeleteObject
 258  */
 259 static BOOL DC_DeleteObject( HGDIOBJ handle )
 260 {
 261     return DeleteDC( handle );
 262 }
 263
 264
 265 /***********************************************************************
 266  *           DC_InitDC
 267  *
 268  * Setup device-specific DC values for a newly created DC.
 269  */
 270 void DC_InitDC( DC* dc )
 271 {
 272     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 273     physdev->funcs->pRealizeDefaultPalette( physdev );
 274     SetTextColor( dc->hSelf, dc->textColor );
 275     SetBkColor( dc->hSelf, dc->backgroundColor );
 276     SelectObject( dc->hSelf, dc->hPen );
 277     SelectObject( dc->hSelf, dc->hBrush );
 278     SelectObject( dc->hSelf, dc->hFont );
 279     CLIPPING_UpdateGCRegion( dc );
 280     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 281 }
 282
 283
 284 /***********************************************************************
 285  *           DC_InvertXform
 286  *
 287  * Computes the inverse of the transformation xformSrc and stores it to
 288  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 289  * is singular.
 290  */
 291 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 292 {
 293     double determinant;
 294
 295     determinant = xformSrc->eM11*xformSrc->eM22 -
 296         xformSrc->eM12*xformSrc->eM21;
 297     if (determinant > -1e-12 && determinant < 1e-12)
 298         return FALSE;
 299
 300     xformDest->eM11 =  xformSrc->eM22 / determinant;
 301     xformDest->eM12 = -xformSrc->eM12 / determinant;
 302     xformDest->eM21 = -xformSrc->eM21 / determinant;
 303     xformDest->eM22 =  xformSrc->eM11 / determinant;
 304     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 305                        xformSrc->eDy * xformDest->eM21;
 306     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 307                        xformSrc->eDy * xformDest->eM22;
 308
 309     return TRUE;
 310 }
 311
 312 /* Construct a transformation to do the window-to-viewport conversion */
 313 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 314 {
 315     double scaleX, scaleY;
 316     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 317     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 318
 319     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 320     xform->eM11 = scaleX;
 321     xform->eM12 = 0.0;
 322     xform->eM21 = 0.0;
 323     xform->eM22 = scaleY;
 324     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 325     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 326     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 327 }
 328
 329 /***********************************************************************
 330  *           DC_UpdateXforms
 331  *
 332  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 333  * fields of the specified DC by creating a transformation that
 334  * represents the current mapping mode and combining it with the DC's
 335  * world transform. This function should be called whenever the
 336  * parameters associated with the mapping mode (window and viewport
 337  * extents and origins) or the world transform change.
 338  */
 339 void DC_UpdateXforms( DC *dc )
 340 {
 341     XFORM xformWnd2Vport, oldworld2vport;
 342
 343     construct_window_to_viewport(dc, &xformWnd2Vport);
 344
 345     oldworld2vport = dc->xformWorld2Vport;
 346     /* Combine with the world transformation */
 347     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 348         &xformWnd2Vport );
 349
 350     /* Create inverse of world-to-viewport transformation */
 351     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 352         &dc->xformVport2World );
 353
 354     /* Reselect the font and pen back into the dc so that the size
 355        gets updated. */
 356     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 357         !GdiIsMetaFileDC(dc->hSelf))
 358     {
 359         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 360         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 361     }
 362 }
 363
 364
 365 /***********************************************************************
 366  *           nulldrv_SaveDC
 367  */
 368 INT nulldrv_SaveDC( PHYSDEV dev )
 369 {
 370     DC *newdc, *dc = get_nulldrv_dc( dev );
 371
 372     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc )))) return 0;
 373     newdc->flags            = dc->flags;
 374     newdc->layout           = dc->layout;
 375     newdc->hPen             = dc->hPen;
 376     newdc->hBrush           = dc->hBrush;
 377     newdc->hFont            = dc->hFont;
 378     newdc->hBitmap          = dc->hBitmap;
 379     newdc->hDevice          = dc->hDevice;
 380     newdc->hPalette         = dc->hPalette;
 381     newdc->ROPmode          = dc->ROPmode;
 382     newdc->polyFillMode     = dc->polyFillMode;
 383     newdc->stretchBltMode   = dc->stretchBltMode;
 384     newdc->relAbsMode       = dc->relAbsMode;
 385     newdc->backgroundMode   = dc->backgroundMode;
 386     newdc->backgroundColor  = dc->backgroundColor;
 387     newdc->textColor        = dc->textColor;
 388     newdc->dcBrushColor     = dc->dcBrushColor;
 389     newdc->dcPenColor       = dc->dcPenColor;
 390     newdc->brushOrgX        = dc->brushOrgX;
 391     newdc->brushOrgY        = dc->brushOrgY;
 392     newdc->mapperFlags      = dc->mapperFlags;
 393     newdc->textAlign        = dc->textAlign;
 394     newdc->charExtra        = dc->charExtra;
 395     newdc->breakExtra       = dc->breakExtra;
 396     newdc->breakRem         = dc->breakRem;
 397     newdc->MapMode          = dc->MapMode;
 398     newdc->GraphicsMode     = dc->GraphicsMode;
 399     newdc->CursPosX         = dc->CursPosX;
 400     newdc->CursPosY         = dc->CursPosY;
 401     newdc->ArcDirection     = dc->ArcDirection;
 402     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 403     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 404     newdc->xformVport2World = dc->xformVport2World;
 405     newdc->vport2WorldValid = dc->vport2WorldValid;
 406     newdc->wndOrgX          = dc->wndOrgX;
 407     newdc->wndOrgY          = dc->wndOrgY;
 408     newdc->wndExtX          = dc->wndExtX;
 409     newdc->wndExtY          = dc->wndExtY;
 410     newdc->vportOrgX        = dc->vportOrgX;
 411     newdc->vportOrgY        = dc->vportOrgY;
 412     newdc->vportExtX        = dc->vportExtX;
 413     newdc->vportExtY        = dc->vportExtY;
 414     newdc->virtual_res      = dc->virtual_res;
 415     newdc->virtual_size     = dc->virtual_size;
 416     newdc->BoundsRect       = dc->BoundsRect;
 417     newdc->gdiFont          = dc->gdiFont;
 418
 419     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 420
 421     newdc->hVisRgn      = 0;
 422     newdc->hClipRgn     = 0;
 423     newdc->hMetaRgn     = 0;
 424     newdc->hMetaClipRgn = 0;
 425     if (dc->hClipRgn)
 426     {
 427         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 428         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 429     }
 430     if (dc->hMetaRgn)
 431     {
 432         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 433         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 434     }
 435
 436     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 437
 438     if (!PATH_SavePath( newdc, dc ))
 439     {
 440         release_dc_ptr( dc );
 441         free_dc_state( newdc );
 442         return 0;
 443     }
 444
 445     newdc->saved_dc = dc->saved_dc;
 446     dc->saved_dc = newdc;
 447     return ++dc->saveLevel;
 448 }
 449
 450
 451 /***********************************************************************
 452  *           restore_dc_state
 453  */
 454 BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 455 {
 456     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 457     INT save_level;
 458
 459     /* find the state level to restore */
 460
 461     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 462     if (level < 0) level = dc->saveLevel + level + 1;
 463     first_dcs = dc->saved_dc;
 464     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 465         dcs = dcs->saved_dc;
 466
 467     /* restore the state */
 468
 469     if (!PATH_RestorePath( dc, dcs )) return FALSE;
 470
 471     dc->flags            = dcs->flags;
 472     dc->layout           = dcs->layout;
 473     dc->hDevice          = dcs->hDevice;
 474     dc->ROPmode          = dcs->ROPmode;
 475     dc->polyFillMode     = dcs->polyFillMode;
 476     dc->stretchBltMode   = dcs->stretchBltMode;
 477     dc->relAbsMode       = dcs->relAbsMode;
 478     dc->backgroundMode   = dcs->backgroundMode;
 479     dc->backgroundColor  = dcs->backgroundColor;
 480     dc->textColor        = dcs->textColor;
 481     dc->dcBrushColor     = dcs->dcBrushColor;
 482     dc->dcPenColor       = dcs->dcPenColor;
 483     dc->brushOrgX        = dcs->brushOrgX;
 484     dc->brushOrgY        = dcs->brushOrgY;
 485     dc->mapperFlags      = dcs->mapperFlags;
 486     dc->textAlign        = dcs->textAlign;
 487     dc->charExtra        = dcs->charExtra;
 488     dc->breakExtra       = dcs->breakExtra;
 489     dc->breakRem         = dcs->breakRem;
 490     dc->MapMode          = dcs->MapMode;
 491     dc->GraphicsMode     = dcs->GraphicsMode;
 492     dc->CursPosX         = dcs->CursPosX;
 493     dc->CursPosY         = dcs->CursPosY;
 494     dc->ArcDirection     = dcs->ArcDirection;
 495     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 496     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 497     dc->xformVport2World = dcs->xformVport2World;
 498     dc->vport2WorldValid = dcs->vport2WorldValid;
 499     dc->BoundsRect       = dcs->BoundsRect;
 500
 501     dc->wndOrgX          = dcs->wndOrgX;
 502     dc->wndOrgY          = dcs->wndOrgY;
 503     dc->wndExtX          = dcs->wndExtX;
 504     dc->wndExtY          = dcs->wndExtY;
 505     dc->vportOrgX        = dcs->vportOrgX;
 506     dc->vportOrgY        = dcs->vportOrgY;
 507     dc->vportExtX        = dcs->vportExtX;
 508     dc->vportExtY        = dcs->vportExtY;
 509     dc->virtual_res      = dcs->virtual_res;
 510     dc->virtual_size     = dcs->virtual_size;
 511
 512     if (dcs->hClipRgn)
 513     {
 514         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 515         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 516     }
 517     else
 518     {
 519         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 520         dc->hClipRgn = 0;
 521     }
 522     if (dcs->hMetaRgn)
 523     {
 524         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 525         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 526     }
 527     else
 528     {
 529         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 530         dc->hMetaRgn = 0;
 531     }
 532     DC_UpdateXforms( dc );
 533     CLIPPING_UpdateGCRegion( dc );
 534
 535     SelectObject( dev->hdc, dcs->hBitmap );
 536     SelectObject( dev->hdc, dcs->hBrush );
 537     SelectObject( dev->hdc, dcs->hFont );
 538     SelectObject( dev->hdc, dcs->hPen );
 539     SetBkColor( dev->hdc, dcs->backgroundColor);
 540     SetTextColor( dev->hdc, dcs->textColor);
 541     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 542
 543     dc->saved_dc  = dcs->saved_dc;
 544     dcs->saved_dc = 0;
 545     dc->saveLevel = save_level - 1;
 546
 547     /* now destroy all the saved DCs */
 548
 549     while (first_dcs)
 550     {
 551         DC *next = first_dcs->saved_dc;
 552         free_dc_state( first_dcs );
 553         first_dcs = next;
 554     }
 555     return TRUE;
 556 }
 557
 558
 559 /***********************************************************************
 560  *           SaveDC    (GDI32.@)
 561  */
 562 INT WINAPI SaveDC( HDC hdc )
 563 {
 564     DC * dc;
 565     INT ret = 0;
 566
 567     if ((dc = get_dc_ptr( hdc )))
 568     {
 569         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 570         ret = physdev->funcs->pSaveDC( physdev );
 571         release_dc_ptr( dc );
 572     }
 573     return ret;
 574 }
 575
 576
 577 /***********************************************************************
 578  *           RestoreDC    (GDI32.@)
 579  */
 580 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 581 {
 582     DC *dc;
 583     BOOL success = FALSE;
 584
 585     TRACE("%p %d\n", hdc, level );
 586     if ((dc = get_dc_ptr( hdc )))
 587     {
 588         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 589         update_dc( dc );
 590         success = physdev->funcs->pRestoreDC( physdev, level );
 591         release_dc_ptr( dc );
 592     }
 593     return success;
 594 }
 595
 596
 597 /***********************************************************************
 598  *           CreateDCW    (GDI32.@)
 599  */
 600 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 601                       const DEVMODEW *initData )
 602 {
 603     HDC hdc;
 604     DC * dc;
 605     const struct gdi_dc_funcs *funcs;
 606     WCHAR buf[300];
 607
 608     GDI_CheckNotLock();
 609
 610     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 611     {
 612         if (!driver)
 613         {
 614             ERR( "no device found for %s\n", debugstr_w(device) );
 615             return 0;
 616         }
 617         strcpyW(buf, driver);
 618     }
 619
 620     if (!(funcs = DRIVER_load_driver( buf )))
 621     {
 622         ERR( "no driver found for %s\n", debugstr_w(buf) );
 623         return 0;
 624     }
 625     if (!(dc = alloc_dc_ptr( OBJ_DC ))) goto error;
 626     hdc = dc->hSelf;
 627
 628     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 629     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 630
 631     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 632           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 633
 634     if (funcs->pCreateDC)
 635     {
 636         if (!funcs->pCreateDC( &dc->physDev, buf, device, output, initData ))
 637         {
 638             WARN("creation aborted by device\n" );
 639             goto error;
 640         }
 641     }
 642
 643     dc->vis_rect.left   = 0;
 644     dc->vis_rect.top    = 0;
 645     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 646     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 647     SetRectRgn(dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top, dc->vis_rect.right, dc->vis_rect.bottom);
 648
 649     DC_InitDC( dc );
 650     release_dc_ptr( dc );
 651     return hdc;
 652
 653 error:
 654     if (dc) free_dc_ptr( dc );
 655     return 0;
 656 }
 657
 658
 659 /***********************************************************************
 660  *           CreateDCA    (GDI32.@)
 661  */
 662 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 663                       const DEVMODEA *initData )
 664 {
 665     UNICODE_STRING driverW, deviceW, outputW;
 666     DEVMODEW *initDataW;
 667     HDC ret;
 668
 669     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 670     else driverW.Buffer = NULL;
 671
 672     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 673     else deviceW.Buffer = NULL;
 674
 675     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 676     else outputW.Buffer = NULL;
 677
 678     initDataW = NULL;
 679     if (initData)
 680     {
 681         /* don't convert initData for DISPLAY driver, it's not used */
 682         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 683             initDataW = GdiConvertToDevmodeW(initData);
 684     }
 685
 686     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 687
 688     RtlFreeUnicodeString(&driverW);
 689     RtlFreeUnicodeString(&deviceW);
 690     RtlFreeUnicodeString(&outputW);
 691     HeapFree(GetProcessHeap(), 0, initDataW);
 692     return ret;
 693 }
 694
 695
 696 /***********************************************************************
 697  *           CreateICA    (GDI32.@)
 698  */
 699 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 700                           const DEVMODEA* initData )
 701 {
 702       /* Nothing special yet for ICs */
 703     return CreateDCA( driver, device, output, initData );
 704 }
 705
 706
 707 /***********************************************************************
 708  *           CreateICW    (GDI32.@)
 709  */
 710 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 711                           const DEVMODEW* initData )
 712 {
 713       /* Nothing special yet for ICs */
 714     return CreateDCW( driver, device, output, initData );
 715 }
 716
 717
 718 /***********************************************************************
 719  *           CreateCompatibleDC   (GDI32.@)
 720  */
 721 HDC WINAPI CreateCompatibleDC( HDC hdc )
 722 {
 723     DC *dc, *origDC;
 724     HDC ret;
 725     const struct gdi_dc_funcs *funcs = &null_driver;
 726     PHYSDEV physDev = NULL;
 727
 728     GDI_CheckNotLock();
 729
 730     if (hdc)
 731     {
 732         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 733         physDev = GET_DC_PHYSDEV( origDC, pCreateCompatibleDC );
 734         funcs = physDev->funcs;
 735         release_dc_ptr( origDC );
 736     }
 737
 738     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) goto error;
 739
 740     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 741
 742     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 743     dc->vis_rect.left   = 0;
 744     dc->vis_rect.top    = 0;
 745     dc->vis_rect.right  = 1;
 746     dc->vis_rect.bottom = 1;
 747     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 748
 749     ret = dc->hSelf;
 750
 751     if (!funcs->pCreateCompatibleDC( physDev, &dc->physDev ))
 752     {
 753         WARN("creation aborted by device\n");
 754         goto error;
 755     }
 756     DC_InitDC( dc );
 757     release_dc_ptr( dc );
 758     return ret;
 759
 760 error:
 761     if (dc) free_dc_ptr( dc );
 762     return 0;
 763 }
 764
 765
 766 /***********************************************************************
 767  *           DeleteDC    (GDI32.@)
 768  */
 769 BOOL WINAPI DeleteDC( HDC hdc )
 770 {
 771     DC * dc;
 772
 773     TRACE("%p\n", hdc );
 774
 775     GDI_CheckNotLock();
 776
 777     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 778     if (dc->refcount != 1)
 779     {
 780         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 781         release_dc_ptr( dc );
 782         return FALSE;
 783     }
 784
 785     /* Call hook procedure to check whether is it OK to delete this DC */
 786     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 787     {
 788         release_dc_ptr( dc );
 789         return TRUE;
 790     }
 791
 792     while (dc->saveLevel)
 793     {
 794         DC *dcs = dc->saved_dc;
 795         dc->saved_dc = dcs->saved_dc;
 796         dc->saveLevel--;
 797         free_dc_state( dcs );
 798     }
 799
 800     AbortPath( hdc );
 801     SelectObject( hdc, GetStockObject(BLACK_PEN) );
 802     SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 803     SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 804     SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 805
 806     free_dc_ptr( dc );
 807     return TRUE;
 808 }
 809
 810
 811 /***********************************************************************
 812  *           ResetDCW    (GDI32.@)
 813  */
 814 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 815 {
 816     DC *dc;
 817     HDC ret = 0;
 818
 819     if ((dc = get_dc_ptr( hdc )))
 820     {
 821         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 822         ret = physdev->funcs->pResetDC( physdev, devmode );
 823         if (ret)  /* reset the visible region */
 824         {
 825             dc->dirty = 0;
 826             dc->vis_rect.left   = 0;
 827             dc->vis_rect.top    = 0;
 828             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 829             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 830             SetRectRgn( dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top,
 831                         dc->vis_rect.right, dc->vis_rect.bottom );
 832             CLIPPING_UpdateGCRegion( dc );
 833         }
 834         release_dc_ptr( dc );
 835     }
 836     return ret;
 837 }
 838
 839
 840 /***********************************************************************
 841  *           ResetDCA    (GDI32.@)
 842  */
 843 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 844 {
 845     DEVMODEW *devmodeW;
 846     HDC ret;
 847
 848     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 849     else devmodeW = NULL;
 850
 851     ret = ResetDCW(hdc, devmodeW);
 852
 853     HeapFree(GetProcessHeap(), 0, devmodeW);
 854     return ret;
 855 }
 856
 857
 858 /***********************************************************************
 859  *           GetDeviceCaps    (GDI32.@)
 860  */
 861 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 862 {
 863     DC *dc;
 864     INT ret = 0;
 865
 866     if ((dc = get_dc_ptr( hdc )))
 867     {
 868         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 869         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 870         release_dc_ptr( dc );
 871     }
 872     return ret;
 873 }
 874
 875
 876 /***********************************************************************
 877  *              GetBkColor (GDI32.@)
 878  */
 879 COLORREF WINAPI GetBkColor( HDC hdc )
 880 {
 881     COLORREF ret = 0;
 882     DC * dc = get_dc_ptr( hdc );
 883     if (dc)
 884     {
 885         ret = dc->backgroundColor;
 886         release_dc_ptr( dc );
 887     }
 888     return ret;
 889 }
 890
 891
 892 /***********************************************************************
 893  *           SetBkColor    (GDI32.@)
 894  */
 895 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 896 {
 897     COLORREF ret = CLR_INVALID;
 898     DC * dc = get_dc_ptr( hdc );
 899
 900     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 901
 902     if (dc)
 903     {
 904         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 905         color = physdev->funcs->pSetBkColor( physdev, color );
 906         if (color != CLR_INVALID)
 907         {
 908             ret = dc->backgroundColor;
 909             dc->backgroundColor = color;
 910         }
 911         release_dc_ptr( dc );
 912     }
 913     return ret;
 914 }
 915
 916
 917 /***********************************************************************
 918  *              GetTextColor (GDI32.@)
 919  */
 920 COLORREF WINAPI GetTextColor( HDC hdc )
 921 {
 922     COLORREF ret = 0;
 923     DC * dc = get_dc_ptr( hdc );
 924     if (dc)
 925     {
 926         ret = dc->textColor;
 927         release_dc_ptr( dc );
 928     }
 929     return ret;
 930 }
 931
 932
 933 /***********************************************************************
 934  *           SetTextColor    (GDI32.@)
 935  */
 936 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 937 {
 938     COLORREF ret = CLR_INVALID;
 939     DC * dc = get_dc_ptr( hdc );
 940
 941     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 942
 943     if (dc)
 944     {
 945         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 946         color = physdev->funcs->pSetTextColor( physdev, color );
 947         if (color != CLR_INVALID)
 948         {
 949             ret = dc->textColor;
 950             dc->textColor = color;
 951         }
 952         release_dc_ptr( dc );
 953     }
 954     return ret;
 955 }
 956
 957
 958 /***********************************************************************
 959  *              GetTextAlign (GDI32.@)
 960  */
 961 UINT WINAPI GetTextAlign( HDC hdc )
 962 {
 963     UINT ret = 0;
 964     DC * dc = get_dc_ptr( hdc );
 965     if (dc)
 966     {
 967         ret = dc->textAlign;
 968         release_dc_ptr( dc );
 969     }
 970     return ret;
 971 }
 972
 973
 974 /***********************************************************************
 975  *           SetTextAlign    (GDI32.@)
 976  */
 977 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 978 {
 979     UINT ret = GDI_ERROR;
 980     DC *dc = get_dc_ptr( hdc );
 981
 982     TRACE("hdc=%p align=%d\n", hdc, align);
 983
 984     if (dc)
 985     {
 986         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
 987         align = physdev->funcs->pSetTextAlign( physdev, align );
 988         if (align != GDI_ERROR)
 989         {
 990             ret = dc->textAlign;
 991             dc->textAlign = align;
 992         }
 993         release_dc_ptr( dc );
 994     }
 995     return ret;
 996 }
 997
 998 /***********************************************************************
 999  *           GetDCOrgEx  (GDI32.@)
1000  */
1001 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1002 {
1003     DC * dc;
1004
1005     if (!lpp) return FALSE;
1006     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1007     lpp->x = dc->vis_rect.left;
1008     lpp->y = dc->vis_rect.top;
1009     release_dc_ptr( dc );
1010     return TRUE;
1011 }
1012
1013
1014 /***********************************************************************
1015  *              GetGraphicsMode (GDI32.@)
1016  */
1017 INT WINAPI GetGraphicsMode( HDC hdc )
1018 {
1019     INT ret = 0;
1020     DC * dc = get_dc_ptr( hdc );
1021     if (dc)
1022     {
1023         ret = dc->GraphicsMode;
1024         release_dc_ptr( dc );
1025     }
1026     return ret;
1027 }
1028
1029
1030 /***********************************************************************
1031  *           SetGraphicsMode    (GDI32.@)
1032  */
1033 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1034 {
1035     INT ret = 0;
1036     DC *dc = get_dc_ptr( hdc );
1037
1038     /* One would think that setting the graphics mode to GM_COMPATIBLE
1039      * would also reset the world transformation matrix to the unity
1040      * matrix. However, in Windows, this is not the case. This doesn't
1041      * make a lot of sense to me, but that's the way it is.
1042      */
1043     if (!dc) return 0;
1044     if ((mode > 0) && (mode <= GM_LAST))
1045     {
1046         ret = dc->GraphicsMode;
1047         dc->GraphicsMode = mode;
1048     }
1049     release_dc_ptr( dc );
1050     return ret;
1051 }
1052
1053
1054 /***********************************************************************
1055  *              GetArcDirection (GDI32.@)
1056  */
1057 INT WINAPI GetArcDirection( HDC hdc )
1058 {
1059     INT ret = 0;
1060     DC * dc = get_dc_ptr( hdc );
1061     if (dc)
1062     {
1063         ret = dc->ArcDirection;
1064         release_dc_ptr( dc );
1065     }
1066     return ret;
1067 }
1068
1069
1070 /***********************************************************************
1071  *           SetArcDirection    (GDI32.@)
1072  */
1073 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1074 {
1075     DC * dc;
1076     INT ret = 0;
1077
1078     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1079     {
1080         SetLastError(ERROR_INVALID_PARAMETER);
1081         return 0;
1082     }
1083
1084     if ((dc = get_dc_ptr( hdc )))
1085     {
1086         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1087         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1088         if (dir)
1089         {
1090             ret = dc->ArcDirection;
1091             dc->ArcDirection = dir;
1092         }
1093         release_dc_ptr( dc );
1094     }
1095     return ret;
1096 }
1097
1098
1099 /***********************************************************************
1100  *           GetWorldTransform    (GDI32.@)
1101  */
1102 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1103 {
1104     DC * dc;
1105     if (!xform) return FALSE;
1106     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1107     *xform = dc->xformWorld2Wnd;
1108     release_dc_ptr( dc );
1109     return TRUE;
1110 }
1111
1112
1113 /***********************************************************************
1114  *           GetTransform    (GDI32.@)
1115  *
1116  * Undocumented
1117  *
1118  * Returns one of the co-ordinate space transforms
1119  *
1120  * PARAMS
1121  *    hdc   [I] Device context.
1122  *    which [I] Which xform to return:
1123  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1124  *                  0x304 Page -> Device transform (the mapping mode transform).
1125  *                  0x204 World -> Device transform (the combination of the above two).
1126  *                  0x402 Device -> World transform (the inversion of the above).
1127  *    xform [O] The xform.
1128  *
1129  */
1130 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1131 {
1132     BOOL ret = TRUE;
1133     DC *dc = get_dc_ptr( hdc );
1134     if (!dc) return FALSE;
1135
1136     switch(which)
1137     {
1138     case 0x203:
1139         *xform = dc->xformWorld2Wnd;
1140         break;
1141
1142     case 0x304:
1143         construct_window_to_viewport(dc, xform);
1144         break;
1145
1146     case 0x204:
1147         *xform = dc->xformWorld2Vport;
1148         break;
1149
1150     case 0x402:
1151         *xform = dc->xformVport2World;
1152         break;
1153
1154     default:
1155         FIXME("Unknown code %x\n", which);
1156         ret = FALSE;
1157     }
1158
1159     release_dc_ptr( dc );
1160     return ret;
1161 }
1162
1163
1164 /****************************************************************************
1165  * CombineTransform [GDI32.@]
1166  * Combines two transformation matrices.
1167  *
1168  * PARAMS
1169  *    xformResult [O] Stores the result of combining the two matrices
1170  *    xform1      [I] Specifies the first matrix to apply
1171  *    xform2      [I] Specifies the second matrix to apply
1172  *
1173  * REMARKS
1174  *    The same matrix can be passed in for more than one of the parameters.
1175  *
1176  * RETURNS
1177  *  Success: TRUE.
1178  *  Failure: FALSE. Use GetLastError() to determine the cause.
1179  */
1180 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1181     const XFORM *xform2 )
1182 {
1183     XFORM xformTemp;
1184
1185     /* Check for illegal parameters */
1186     if (!xformResult || !xform1 || !xform2)
1187         return FALSE;
1188
1189     /* Create the result in a temporary XFORM, since xformResult may be
1190      * equal to xform1 or xform2 */
1191     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1192                      xform1->eM12 * xform2->eM21;
1193     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1194                      xform1->eM12 * xform2->eM22;
1195     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1196                      xform1->eM22 * xform2->eM21;
1197     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1198                      xform1->eM22 * xform2->eM22;
1199     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1200                      xform1->eDy  * xform2->eM21 +
1201                      xform2->eDx;
1202     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1203                      xform1->eDy  * xform2->eM22 +
1204                      xform2->eDy;
1205
1206     /* Copy the result to xformResult */
1207     *xformResult = xformTemp;
1208
1209     return TRUE;
1210 }
1211
1212
1213 /***********************************************************************
1214  *           SetDCHook   (GDI32.@)
1215  *
1216  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1217  */
1218 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1219 {
1220     DC *dc = get_dc_ptr( hdc );
1221
1222     if (!dc) return FALSE;
1223
1224     dc->dwHookData = dwHookData;
1225     dc->hookProc = hookProc;
1226     release_dc_ptr( dc );
1227     return TRUE;
1228 }
1229
1230
1231 /***********************************************************************
1232  *           GetDCHook   (GDI32.@)
1233  *
1234  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1235  */
1236 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1237 {
1238     DC *dc = get_dc_ptr( hdc );
1239     DWORD_PTR ret;
1240
1241     if (!dc) return 0;
1242     if (proc) *proc = dc->hookProc;
1243     ret = dc->dwHookData;
1244     release_dc_ptr( dc );
1245     return ret;
1246 }
1247
1248
1249 /***********************************************************************
1250  *           SetHookFlags   (GDI32.@)
1251  *
1252  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1253  */
1254 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1255 {
1256     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1257     LONG ret = 0;
1258
1259     if (!dc) return 0;
1260
1261     /* "Undocumented Windows" info is slightly confusing. */
1262
1263     TRACE("hDC %p, flags %04x\n",hdc,flags);
1264
1265     if (flags & DCHF_INVALIDATEVISRGN)
1266         ret = InterlockedExchange( &dc->dirty, 1 );
1267     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1268         ret = InterlockedExchange( &dc->dirty, 0 );
1269
1270     GDI_ReleaseObj( hdc );
1271     return ret;
1272 }
1273
1274 /***********************************************************************
1275  *           SetICMMode    (GDI32.@)
1276  */
1277 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1278 {
1279 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1280     if (iEnableICM == ICM_OFF) return ICM_OFF;
1281     if (iEnableICM == ICM_ON) return 0;
1282     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1283     return 0;
1284 }
1285
1286 /***********************************************************************
1287  *           GetDeviceGammaRamp    (GDI32.@)
1288  */
1289 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1290 {
1291     BOOL ret = FALSE;
1292     DC *dc = get_dc_ptr( hDC );
1293
1294     TRACE("%p, %p\n", hDC, ptr);
1295     if( dc )
1296     {
1297         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1298         ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1299         release_dc_ptr( dc );
1300     }
1301     return ret;
1302 }
1303
1304 /***********************************************************************
1305  *           SetDeviceGammaRamp    (GDI32.@)
1306  */
1307 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1308 {
1309     BOOL ret = FALSE;
1310     DC *dc = get_dc_ptr( hDC );
1311
1312     TRACE("%p, %p\n", hDC, ptr);
1313     if( dc )
1314     {
1315         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1316         ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1317         release_dc_ptr( dc );
1318     }
1319     return ret;
1320 }
1321
1322 /***********************************************************************
1323  *           GetColorSpace    (GDI32.@)
1324  */
1325 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1326 {
1327 /*FIXME    Need to do whatever GetColorSpace actually does */
1328     return 0;
1329 }
1330
1331 /***********************************************************************
1332  *           CreateColorSpaceA    (GDI32.@)
1333  */
1334 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1335 {
1336   FIXME( "stub\n" );
1337   return 0;
1338 }
1339
1340 /***********************************************************************
1341  *           CreateColorSpaceW    (GDI32.@)
1342  */
1343 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1344 {
1345   FIXME( "stub\n" );
1346   return 0;
1347 }
1348
1349 /***********************************************************************
1350  *           DeleteColorSpace     (GDI32.@)
1351  */
1352 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1353 {
1354   FIXME( "stub\n" );
1355
1356   return TRUE;
1357 }
1358
1359 /***********************************************************************
1360  *           SetColorSpace     (GDI32.@)
1361  */
1362 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1363 {
1364   FIXME( "stub\n" );
1365
1366   return hColorSpace;
1367 }
1368
1369 /***********************************************************************
1370  *           GetBoundsRect    (GDI32.@)
1371  */
1372 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1373 {
1374     UINT ret = 0;
1375     DC *dc = get_dc_ptr( hdc );
1376
1377     if ( !dc ) return 0;
1378
1379     if (rect)
1380     {
1381         *rect = dc->BoundsRect;
1382         ret = is_rect_empty( rect ) ? DCB_RESET : DCB_SET;
1383         DPtoLP( hdc, (POINT *)rect, 2 );
1384     }
1385     if (flags & DCB_RESET)
1386     {
1387         dc->BoundsRect.left   = 0;
1388         dc->BoundsRect.top    = 0;
1389         dc->BoundsRect.right  = 0;
1390         dc->BoundsRect.bottom = 0;
1391     }
1392     release_dc_ptr( dc );
1393     return ret;
1394 }
1395
1396
1397 /***********************************************************************
1398  *           SetBoundsRect    (GDI32.@)
1399  */
1400 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1401 {
1402     UINT ret;
1403     DC *dc;
1404
1405     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1406     if (!(dc = get_dc_ptr( hdc ))) return 0;
1407
1408     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1409            (is_rect_empty( &dc->BoundsRect ) ? DCB_RESET : DCB_SET);
1410
1411     if (flags & DCB_RESET)
1412     {
1413         dc->BoundsRect.left   = 0;
1414         dc->BoundsRect.top    = 0;
1415         dc->BoundsRect.right  = 0;
1416         dc->BoundsRect.bottom = 0;
1417     }
1418
1419     if ((flags & DCB_ACCUMULATE) && rect)
1420     {
1421         RECT rc = *rect;
1422
1423         LPtoDP( hdc, (POINT *)&rc, 2 );
1424         if (!is_rect_empty( &rc ))
1425         {
1426             if (!is_rect_empty( &dc->BoundsRect))
1427             {
1428                 dc->BoundsRect.left   = min( dc->BoundsRect.left, rc.left );
1429                 dc->BoundsRect.top    = min( dc->BoundsRect.top, rc.top );
1430                 dc->BoundsRect.right  = max( dc->BoundsRect.right, rc.right );
1431                 dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rc.bottom );
1432             }
1433             else dc->BoundsRect = rc;
1434         }
1435     }
1436
1437     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1438     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1439
1440     release_dc_ptr( dc );
1441     return ret;
1442 }
1443
1444
1445 /***********************************************************************
1446  *              GetRelAbs               (GDI32.@)
1447  */
1448 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1449 {
1450     INT ret = 0;
1451     DC *dc = get_dc_ptr( hdc );
1452     if (dc)
1453     {
1454         ret = dc->relAbsMode;
1455         release_dc_ptr( dc );
1456     }
1457     return ret;
1458 }
1459
1460
1461
1462
1463 /***********************************************************************
1464  *              GetBkMode (GDI32.@)
1465  */
1466 INT WINAPI GetBkMode( HDC hdc )
1467 {
1468     INT ret = 0;
1469     DC * dc = get_dc_ptr( hdc );
1470     if (dc)
1471     {
1472         ret = dc->backgroundMode;
1473         release_dc_ptr( dc );
1474     }
1475     return ret;
1476 }
1477
1478
1479 /***********************************************************************
1480  *              SetBkMode (GDI32.@)
1481  */
1482 INT WINAPI SetBkMode( HDC hdc, INT mode )
1483 {
1484     INT ret = 0;
1485     DC *dc;
1486
1487     if ((mode <= 0) || (mode > BKMODE_LAST))
1488     {
1489         SetLastError(ERROR_INVALID_PARAMETER);
1490         return 0;
1491     }
1492     if ((dc = get_dc_ptr( hdc )))
1493     {
1494         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1495         mode = physdev->funcs->pSetBkMode( physdev, mode );
1496         if (mode)
1497         {
1498             ret = dc->backgroundMode;
1499             dc->backgroundMode = mode;
1500         }
1501         release_dc_ptr( dc );
1502     }
1503     return ret;
1504 }
1505
1506
1507 /***********************************************************************
1508  *              GetROP2 (GDI32.@)
1509  */
1510 INT WINAPI GetROP2( HDC hdc )
1511 {
1512     INT ret = 0;
1513     DC * dc = get_dc_ptr( hdc );
1514     if (dc)
1515     {
1516         ret = dc->ROPmode;
1517         release_dc_ptr( dc );
1518     }
1519     return ret;
1520 }
1521
1522
1523 /***********************************************************************
1524  *              SetROP2 (GDI32.@)
1525  */
1526 INT WINAPI SetROP2( HDC hdc, INT mode )
1527 {
1528     INT ret = 0;
1529     DC *dc;
1530
1531     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1532     {
1533         SetLastError(ERROR_INVALID_PARAMETER);
1534         return 0;
1535     }
1536     if ((dc = get_dc_ptr( hdc )))
1537     {
1538         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1539         mode = physdev->funcs->pSetROP2( physdev, mode );
1540         if (mode)
1541         {
1542             ret = dc->ROPmode;
1543             dc->ROPmode = mode;
1544         }
1545         release_dc_ptr( dc );
1546     }
1547     return ret;
1548 }
1549
1550
1551 /***********************************************************************
1552  *              SetRelAbs (GDI32.@)
1553  */
1554 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1555 {
1556     INT ret = 0;
1557     DC *dc;
1558
1559     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1560     {
1561         SetLastError(ERROR_INVALID_PARAMETER);
1562         return 0;
1563     }
1564     if ((dc = get_dc_ptr( hdc )))
1565     {
1566         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1567         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1568         if (mode)
1569         {
1570             ret = dc->relAbsMode;
1571             dc->relAbsMode = mode;
1572         }
1573         release_dc_ptr( dc );
1574     }
1575     return ret;
1576 }
1577
1578
1579 /***********************************************************************
1580  *              GetPolyFillMode (GDI32.@)
1581  */
1582 INT WINAPI GetPolyFillMode( HDC hdc )
1583 {
1584     INT ret = 0;
1585     DC * dc = get_dc_ptr( hdc );
1586     if (dc)
1587     {
1588         ret = dc->polyFillMode;
1589         release_dc_ptr( dc );
1590     }
1591     return ret;
1592 }
1593
1594
1595 /***********************************************************************
1596  *              SetPolyFillMode (GDI32.@)
1597  */
1598 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1599 {
1600     INT ret = 0;
1601     DC *dc;
1602
1603     if ((mode <= 0) || (mode > POLYFILL_LAST))
1604     {
1605         SetLastError(ERROR_INVALID_PARAMETER);
1606         return 0;
1607     }
1608     if ((dc = get_dc_ptr( hdc )))
1609     {
1610         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1611         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1612         if (mode)
1613         {
1614             ret = dc->polyFillMode;
1615             dc->polyFillMode = mode;
1616         }
1617         release_dc_ptr( dc );
1618     }
1619     return ret;
1620 }
1621
1622
1623 /***********************************************************************
1624  *              GetStretchBltMode (GDI32.@)
1625  */
1626 INT WINAPI GetStretchBltMode( HDC hdc )
1627 {
1628     INT ret = 0;
1629     DC * dc = get_dc_ptr( hdc );
1630     if (dc)
1631     {
1632         ret = dc->stretchBltMode;
1633         release_dc_ptr( dc );
1634     }
1635     return ret;
1636 }
1637
1638
1639 /***********************************************************************
1640  *              SetStretchBltMode (GDI32.@)
1641  */
1642 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1643 {
1644     INT ret = 0;
1645     DC *dc;
1646
1647     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1648     {
1649         SetLastError(ERROR_INVALID_PARAMETER);
1650         return 0;
1651     }
1652     if ((dc = get_dc_ptr( hdc )))
1653     {
1654         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1655         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1656         if (mode)
1657         {
1658             ret = dc->stretchBltMode;
1659             dc->stretchBltMode = mode;
1660         }
1661         release_dc_ptr( dc );
1662     }
1663     return ret;
1664 }
1665
1666
1667 /***********************************************************************
1668  *              GetMapMode (GDI32.@)
1669  */
1670 INT WINAPI GetMapMode( HDC hdc )
1671 {
1672     INT ret = 0;
1673     DC * dc = get_dc_ptr( hdc );
1674     if (dc)
1675     {
1676         ret = dc->MapMode;
1677         release_dc_ptr( dc );
1678     }
1679     return ret;
1680 }
1681
1682
1683 /***********************************************************************
1684  *              GetBrushOrgEx (GDI32.@)
1685  */
1686 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1687 {
1688     DC * dc = get_dc_ptr( hdc );
1689     if (!dc) return FALSE;
1690     pt->x = dc->brushOrgX;
1691     pt->y = dc->brushOrgY;
1692     release_dc_ptr( dc );
1693     return TRUE;
1694 }
1695
1696
1697 /***********************************************************************
1698  *              GetCurrentPositionEx (GDI32.@)
1699  */
1700 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1701 {
1702     DC * dc = get_dc_ptr( hdc );
1703     if (!dc) return FALSE;
1704     pt->x = dc->CursPosX;
1705     pt->y = dc->CursPosY;
1706     release_dc_ptr( dc );
1707     return TRUE;
1708 }
1709
1710
1711 /***********************************************************************
1712  *              GetViewportExtEx (GDI32.@)
1713  */
1714 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1715 {
1716     DC * dc = get_dc_ptr( hdc );
1717     if (!dc) return FALSE;
1718     size->cx = dc->vportExtX;
1719     size->cy = dc->vportExtY;
1720     release_dc_ptr( dc );
1721     return TRUE;
1722 }
1723
1724
1725 /***********************************************************************
1726  *              GetViewportOrgEx (GDI32.@)
1727  */
1728 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1729 {
1730     DC * dc = get_dc_ptr( hdc );
1731     if (!dc) return FALSE;
1732     pt->x = dc->vportOrgX;
1733     pt->y = dc->vportOrgY;
1734     release_dc_ptr( dc );
1735     return TRUE;
1736 }
1737
1738
1739 /***********************************************************************
1740  *              GetWindowExtEx (GDI32.@)
1741  */
1742 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1743 {
1744     DC * dc = get_dc_ptr( hdc );
1745     if (!dc) return FALSE;
1746     size->cx = dc->wndExtX;
1747     size->cy = dc->wndExtY;
1748     release_dc_ptr( dc );
1749     return TRUE;
1750 }
1751
1752
1753 /***********************************************************************
1754  *              GetWindowOrgEx (GDI32.@)
1755  */
1756 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1757 {
1758     DC * dc = get_dc_ptr( hdc );
1759     if (!dc) return FALSE;
1760     pt->x = dc->wndOrgX;
1761     pt->y = dc->wndOrgY;
1762     release_dc_ptr( dc );
1763     return TRUE;
1764 }
1765
1766
1767 /***********************************************************************
1768  *           GetLayout    (GDI32.@)
1769  *
1770  * Gets left->right or right->left text layout flags of a dc.
1771  *
1772  */
1773 DWORD WINAPI GetLayout(HDC hdc)
1774 {
1775     DWORD layout = GDI_ERROR;
1776
1777     DC * dc = get_dc_ptr( hdc );
1778     if (dc)
1779     {
1780         layout = dc->layout;
1781         release_dc_ptr( dc );
1782     }
1783
1784     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1785
1786     return layout;
1787 }
1788
1789 /***********************************************************************
1790  *           SetLayout    (GDI32.@)
1791  *
1792  * Sets left->right or right->left text layout flags of a dc.
1793  *
1794  */
1795 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1796 {
1797     DWORD oldlayout = GDI_ERROR;
1798
1799     DC * dc = get_dc_ptr( hdc );
1800     if (dc)
1801     {
1802         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1803         layout = physdev->funcs->pSetLayout( physdev, layout );
1804         if (layout != GDI_ERROR)
1805         {
1806             oldlayout = dc->layout;
1807             dc->layout = layout;
1808             if (layout != oldlayout)
1809             {
1810                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1811                 DC_UpdateXforms( dc );
1812             }
1813         }
1814         release_dc_ptr( dc );
1815     }
1816
1817     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1818
1819     return oldlayout;
1820 }
1821
1822 /***********************************************************************
1823  *           GetDCBrushColor    (GDI32.@)
1824  */
1825 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1826 {
1827     DC *dc;
1828     COLORREF dcBrushColor = CLR_INVALID;
1829
1830     TRACE("hdc(%p)\n", hdc);
1831
1832     dc = get_dc_ptr( hdc );
1833     if (dc)
1834     {
1835         dcBrushColor = dc->dcBrushColor;
1836         release_dc_ptr( dc );
1837     }
1838
1839     return dcBrushColor;
1840 }
1841
1842 /***********************************************************************
1843  *           SetDCBrushColor    (GDI32.@)
1844  */
1845 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1846 {
1847     DC *dc;
1848     COLORREF oldClr = CLR_INVALID;
1849
1850     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1851
1852     dc = get_dc_ptr( hdc );
1853     if (dc)
1854     {
1855         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1856         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1857         if (crColor != CLR_INVALID)
1858         {
1859             oldClr = dc->dcBrushColor;
1860             dc->dcBrushColor = crColor;
1861         }
1862         release_dc_ptr( dc );
1863     }
1864
1865     return oldClr;
1866 }
1867
1868 /***********************************************************************
1869  *           GetDCPenColor    (GDI32.@)
1870  */
1871 COLORREF WINAPI GetDCPenColor(HDC hdc)
1872 {
1873     DC *dc;
1874     COLORREF dcPenColor = CLR_INVALID;
1875
1876     TRACE("hdc(%p)\n", hdc);
1877
1878     dc = get_dc_ptr( hdc );
1879     if (dc)
1880     {
1881         dcPenColor = dc->dcPenColor;
1882         release_dc_ptr( dc );
1883     }
1884
1885     return dcPenColor;
1886 }
1887
1888 /***********************************************************************
1889  *           SetDCPenColor    (GDI32.@)
1890  */
1891 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
1892 {
1893     DC *dc;
1894     COLORREF oldClr = CLR_INVALID;
1895
1896     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1897
1898     dc = get_dc_ptr( hdc );
1899     if (dc)
1900     {
1901         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
1902         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
1903         if (crColor != CLR_INVALID)
1904         {
1905             oldClr = dc->dcPenColor;
1906             dc->dcPenColor = crColor;
1907         }
1908         release_dc_ptr( dc );
1909     }
1910
1911     return oldClr;
1912 }
1913
1914 /***********************************************************************
1915  *           CancelDC    (GDI32.@)
1916  */
1917 BOOL WINAPI CancelDC(HDC hdc)
1918 {
1919     FIXME("stub\n");
1920     return TRUE;
1921 }
1922
1923 /*******************************************************************
1924  *      GetMiterLimit [GDI32.@]
1925  *
1926  *
1927  */
1928 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
1929 {
1930     BOOL bRet = FALSE;
1931     DC *dc;
1932
1933     TRACE("(%p,%p)\n", hdc, peLimit);
1934
1935     dc = get_dc_ptr( hdc );
1936     if (dc)
1937     {
1938         if (peLimit)
1939             *peLimit = dc->miterLimit;
1940
1941         release_dc_ptr( dc );
1942         bRet = TRUE;
1943     }
1944     return bRet;
1945 }
1946
1947 /*******************************************************************
1948  *      SetMiterLimit [GDI32.@]
1949  *
1950  *
1951  */
1952 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
1953 {
1954     BOOL bRet = FALSE;
1955     DC *dc;
1956
1957     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
1958
1959     dc = get_dc_ptr( hdc );
1960     if (dc)
1961     {
1962         if (peOldLimit)
1963             *peOldLimit = dc->miterLimit;
1964         dc->miterLimit = eNewLimit;
1965         release_dc_ptr( dc );
1966         bRet = TRUE;
1967     }
1968     return bRet;
1969 }
1970
1971 /*******************************************************************
1972  *      GdiIsMetaPrintDC [GDI32.@]
1973  */
1974 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
1975 {
1976     FIXME("%p\n", hdc);
1977     return FALSE;
1978 }
1979
1980 /*******************************************************************
1981  *      GdiIsMetaFileDC [GDI32.@]
1982  */
1983 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
1984 {
1985     TRACE("%p\n", hdc);
1986
1987     switch( GetObjectType( hdc ) )
1988     {
1989     case OBJ_METADC:
1990     case OBJ_ENHMETADC:
1991         return TRUE;
1992     }
1993     return FALSE;
1994 }
1995
1996 /*******************************************************************
1997  *      GdiIsPlayMetafileDC [GDI32.@]
1998  */
1999 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2000 {
2001     FIXME("%p\n", hdc);
2002     return FALSE;
2003 }