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(), HEAP_ZERO_MEMORY, sizeof(*dc) ))) return NULL;
  79
  80     dc->nulldrv.funcs       = &null_driver;
  81     dc->physDev             = &dc->nulldrv;
  82     dc->thread              = GetCurrentThreadId();
  83     dc->refcount            = 1;
  84     dc->wndExtX             = 1;
  85     dc->wndExtY             = 1;
  86     dc->vportExtX           = 1;
  87     dc->vportExtY           = 1;
  88     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  89     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
  90     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
  91     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
  92     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
  93     dc->font_code_page      = CP_ACP;
  94     dc->ROPmode             = R2_COPYPEN;
  95     dc->polyFillMode        = ALTERNATE;
  96     dc->stretchBltMode      = BLACKONWHITE;
  97     dc->relAbsMode          = ABSOLUTE;
  98     dc->backgroundMode      = OPAQUE;
  99     dc->backgroundColor     = RGB( 255, 255, 255 );
 100     dc->dcBrushColor        = RGB( 255, 255, 255 );
 101     dc->dcPenColor          = RGB( 0, 0, 0 );
 102     dc->textColor           = RGB( 0, 0, 0 );
 103     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 104     dc->MapMode             = MM_TEXT;
 105     dc->GraphicsMode        = GM_COMPATIBLE;
 106     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 107     dc->xformWorld2Wnd.eM11 = 1.0f;
 108     dc->xformWorld2Wnd.eM12 = 0.0f;
 109     dc->xformWorld2Wnd.eM21 = 0.0f;
 110     dc->xformWorld2Wnd.eM22 = 1.0f;
 111     dc->xformWorld2Wnd.eDx  = 0.0f;
 112     dc->xformWorld2Wnd.eDy  = 0.0f;
 113     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 114     dc->xformVport2World    = dc->xformWorld2Wnd;
 115     dc->vport2WorldValid    = TRUE;
 116
 117     reset_bounds( &dc->bounds );
 118
 119     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 120     {
 121         HeapFree( GetProcessHeap(), 0, dc );
 122         return NULL;
 123     }
 124     dc->nulldrv.hdc = dc->hSelf;
 125
 126     if (font_driver && !font_driver->pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 127     {
 128         free_dc_ptr( dc );
 129         return NULL;
 130     }
 131     return dc;
 132 }
 133
 134
 135
 136 /***********************************************************************
 137  *           free_dc_state
 138  */
 139 static void free_dc_state( DC *dc )
 140 {
 141     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 142     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 143     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 144     if (dc->region) DeleteObject( dc->region );
 145     if (dc->path) free_gdi_path( dc->path );
 146     HeapFree( GetProcessHeap(), 0, dc );
 147 }
 148
 149
 150 /***********************************************************************
 151  *           free_dc_ptr
 152  */
 153 void free_dc_ptr( DC *dc )
 154 {
 155     assert( dc->refcount == 1 );
 156
 157     while (dc->physDev != &dc->nulldrv)
 158     {
 159         PHYSDEV physdev = dc->physDev;
 160         dc->physDev = physdev->next;
 161         physdev->funcs->pDeleteDC( physdev );
 162     }
 163     free_gdi_handle( dc->hSelf );
 164     free_dc_state( dc );
 165 }
 166
 167
 168 /***********************************************************************
 169  *           get_dc_ptr
 170  *
 171  * Retrieve a DC pointer but release the GDI lock.
 172  */
 173 DC *get_dc_ptr( HDC hdc )
 174 {
 175     DC *dc = get_dc_obj( hdc );
 176     if (!dc) return NULL;
 177
 178     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 179     {
 180         dc->thread = GetCurrentThreadId();
 181     }
 182     else if (dc->thread != GetCurrentThreadId())
 183     {
 184         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 185         GDI_ReleaseObj( hdc );
 186         return NULL;
 187     }
 188     else InterlockedIncrement( &dc->refcount );
 189
 190     GDI_ReleaseObj( hdc );
 191     return dc;
 192 }
 193
 194
 195 /***********************************************************************
 196  *           release_dc_ptr
 197  */
 198 void release_dc_ptr( DC *dc )
 199 {
 200     LONG ref;
 201
 202     dc->thread = 0;
 203     ref = InterlockedDecrement( &dc->refcount );
 204     assert( ref >= 0 );
 205     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 206 }
 207
 208
 209 /***********************************************************************
 210  *           update_dc
 211  *
 212  * Make sure the DC vis region is up to date.
 213  * This function may call up to USER so the GDI lock should _not_
 214  * be held when calling it.
 215  */
 216 void update_dc( DC *dc )
 217 {
 218     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 219         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 220 }
 221
 222
 223 /***********************************************************************
 224  *           DC_DeleteObject
 225  */
 226 static BOOL DC_DeleteObject( HGDIOBJ handle )
 227 {
 228     return DeleteDC( handle );
 229 }
 230
 231
 232 /***********************************************************************
 233  *           DC_InitDC
 234  *
 235  * Setup device-specific DC values for a newly created DC.
 236  */
 237 void DC_InitDC( DC* dc )
 238 {
 239     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 240     physdev->funcs->pRealizeDefaultPalette( physdev );
 241     SetTextColor( dc->hSelf, dc->textColor );
 242     SetBkColor( dc->hSelf, dc->backgroundColor );
 243     SelectObject( dc->hSelf, dc->hPen );
 244     SelectObject( dc->hSelf, dc->hBrush );
 245     SelectObject( dc->hSelf, dc->hFont );
 246     update_dc_clipping( dc );
 247     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 248     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
 249     physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE );
 250 }
 251
 252
 253 /***********************************************************************
 254  *           DC_InvertXform
 255  *
 256  * Computes the inverse of the transformation xformSrc and stores it to
 257  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 258  * is singular.
 259  */
 260 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 261 {
 262     double determinant;
 263
 264     determinant = xformSrc->eM11*xformSrc->eM22 -
 265         xformSrc->eM12*xformSrc->eM21;
 266     if (determinant > -1e-12 && determinant < 1e-12)
 267         return FALSE;
 268
 269     xformDest->eM11 =  xformSrc->eM22 / determinant;
 270     xformDest->eM12 = -xformSrc->eM12 / determinant;
 271     xformDest->eM21 = -xformSrc->eM21 / determinant;
 272     xformDest->eM22 =  xformSrc->eM11 / determinant;
 273     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 274                        xformSrc->eDy * xformDest->eM21;
 275     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 276                        xformSrc->eDy * xformDest->eM22;
 277
 278     return TRUE;
 279 }
 280
 281 /* Construct a transformation to do the window-to-viewport conversion */
 282 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 283 {
 284     double scaleX, scaleY;
 285     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 286     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 287
 288     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 289     xform->eM11 = scaleX;
 290     xform->eM12 = 0.0;
 291     xform->eM21 = 0.0;
 292     xform->eM22 = scaleY;
 293     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 294     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 295     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 296 }
 297
 298 /***********************************************************************
 299  *           DC_UpdateXforms
 300  *
 301  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 302  * fields of the specified DC by creating a transformation that
 303  * represents the current mapping mode and combining it with the DC's
 304  * world transform. This function should be called whenever the
 305  * parameters associated with the mapping mode (window and viewport
 306  * extents and origins) or the world transform change.
 307  */
 308 void DC_UpdateXforms( DC *dc )
 309 {
 310     XFORM xformWnd2Vport, oldworld2vport;
 311
 312     construct_window_to_viewport(dc, &xformWnd2Vport);
 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  *           nulldrv_SaveDC
 336  */
 337 INT nulldrv_SaveDC( PHYSDEV dev )
 338 {
 339     DC *newdc, *dc = get_nulldrv_dc( dev );
 340
 341     if (!(newdc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*newdc )))) return 0;
 342     newdc->layout           = dc->layout;
 343     newdc->hPen             = dc->hPen;
 344     newdc->hBrush           = dc->hBrush;
 345     newdc->hFont            = dc->hFont;
 346     newdc->hBitmap          = dc->hBitmap;
 347     newdc->hDevice          = dc->hDevice;
 348     newdc->hPalette         = dc->hPalette;
 349     newdc->ROPmode          = dc->ROPmode;
 350     newdc->polyFillMode     = dc->polyFillMode;
 351     newdc->stretchBltMode   = dc->stretchBltMode;
 352     newdc->relAbsMode       = dc->relAbsMode;
 353     newdc->backgroundMode   = dc->backgroundMode;
 354     newdc->backgroundColor  = dc->backgroundColor;
 355     newdc->textColor        = dc->textColor;
 356     newdc->dcBrushColor     = dc->dcBrushColor;
 357     newdc->dcPenColor       = dc->dcPenColor;
 358     newdc->brushOrgX        = dc->brushOrgX;
 359     newdc->brushOrgY        = dc->brushOrgY;
 360     newdc->mapperFlags      = dc->mapperFlags;
 361     newdc->textAlign        = dc->textAlign;
 362     newdc->charExtra        = dc->charExtra;
 363     newdc->breakExtra       = dc->breakExtra;
 364     newdc->breakRem         = dc->breakRem;
 365     newdc->MapMode          = dc->MapMode;
 366     newdc->GraphicsMode     = dc->GraphicsMode;
 367     newdc->CursPosX         = dc->CursPosX;
 368     newdc->CursPosY         = dc->CursPosY;
 369     newdc->ArcDirection     = dc->ArcDirection;
 370     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 371     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 372     newdc->xformVport2World = dc->xformVport2World;
 373     newdc->vport2WorldValid = dc->vport2WorldValid;
 374     newdc->wndOrgX          = dc->wndOrgX;
 375     newdc->wndOrgY          = dc->wndOrgY;
 376     newdc->wndExtX          = dc->wndExtX;
 377     newdc->wndExtY          = dc->wndExtY;
 378     newdc->vportOrgX        = dc->vportOrgX;
 379     newdc->vportOrgY        = dc->vportOrgY;
 380     newdc->vportExtX        = dc->vportExtX;
 381     newdc->vportExtY        = dc->vportExtY;
 382     newdc->virtual_res      = dc->virtual_res;
 383     newdc->virtual_size     = dc->virtual_size;
 384     newdc->gdiFont          = dc->gdiFont;
 385
 386     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 387
 388     if (dc->hClipRgn)
 389     {
 390         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 391         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 392     }
 393     if (dc->hMetaRgn)
 394     {
 395         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 396         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 397     }
 398
 399     if (!PATH_SavePath( newdc, dc ))
 400     {
 401         release_dc_ptr( dc );
 402         free_dc_state( newdc );
 403         return 0;
 404     }
 405
 406     newdc->saved_dc = dc->saved_dc;
 407     dc->saved_dc = newdc;
 408     return ++dc->saveLevel;
 409 }
 410
 411
 412 /***********************************************************************
 413  *           restore_dc_state
 414  */
 415 BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 416 {
 417     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 418     INT save_level;
 419
 420     /* find the state level to restore */
 421
 422     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 423     if (level < 0) level = dc->saveLevel + level + 1;
 424     first_dcs = dc->saved_dc;
 425     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 426         dcs = dcs->saved_dc;
 427
 428     /* restore the state */
 429
 430     if (!PATH_RestorePath( dc, dcs )) return FALSE;
 431
 432     dc->layout           = dcs->layout;
 433     dc->hDevice          = dcs->hDevice;
 434     dc->ROPmode          = dcs->ROPmode;
 435     dc->polyFillMode     = dcs->polyFillMode;
 436     dc->stretchBltMode   = dcs->stretchBltMode;
 437     dc->relAbsMode       = dcs->relAbsMode;
 438     dc->backgroundMode   = dcs->backgroundMode;
 439     dc->backgroundColor  = dcs->backgroundColor;
 440     dc->textColor        = dcs->textColor;
 441     dc->dcBrushColor     = dcs->dcBrushColor;
 442     dc->dcPenColor       = dcs->dcPenColor;
 443     dc->brushOrgX        = dcs->brushOrgX;
 444     dc->brushOrgY        = dcs->brushOrgY;
 445     dc->mapperFlags      = dcs->mapperFlags;
 446     dc->textAlign        = dcs->textAlign;
 447     dc->charExtra        = dcs->charExtra;
 448     dc->breakExtra       = dcs->breakExtra;
 449     dc->breakRem         = dcs->breakRem;
 450     dc->MapMode          = dcs->MapMode;
 451     dc->GraphicsMode     = dcs->GraphicsMode;
 452     dc->CursPosX         = dcs->CursPosX;
 453     dc->CursPosY         = dcs->CursPosY;
 454     dc->ArcDirection     = dcs->ArcDirection;
 455     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 456     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 457     dc->xformVport2World = dcs->xformVport2World;
 458     dc->vport2WorldValid = dcs->vport2WorldValid;
 459     dc->wndOrgX          = dcs->wndOrgX;
 460     dc->wndOrgY          = dcs->wndOrgY;
 461     dc->wndExtX          = dcs->wndExtX;
 462     dc->wndExtY          = dcs->wndExtY;
 463     dc->vportOrgX        = dcs->vportOrgX;
 464     dc->vportOrgY        = dcs->vportOrgY;
 465     dc->vportExtX        = dcs->vportExtX;
 466     dc->vportExtY        = dcs->vportExtY;
 467     dc->virtual_res      = dcs->virtual_res;
 468     dc->virtual_size     = dcs->virtual_size;
 469
 470     if (dcs->hClipRgn)
 471     {
 472         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 473         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 474     }
 475     else
 476     {
 477         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 478         dc->hClipRgn = 0;
 479     }
 480     if (dcs->hMetaRgn)
 481     {
 482         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 483         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 484     }
 485     else
 486     {
 487         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 488         dc->hMetaRgn = 0;
 489     }
 490     DC_UpdateXforms( dc );
 491     update_dc_clipping( dc );
 492
 493     SelectObject( dev->hdc, dcs->hBitmap );
 494     SelectObject( dev->hdc, dcs->hBrush );
 495     SelectObject( dev->hdc, dcs->hFont );
 496     SelectObject( dev->hdc, dcs->hPen );
 497     SetBkColor( dev->hdc, dcs->backgroundColor);
 498     SetTextColor( dev->hdc, dcs->textColor);
 499     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 500
 501     dc->saved_dc  = dcs->saved_dc;
 502     dcs->saved_dc = 0;
 503     dc->saveLevel = save_level - 1;
 504
 505     /* now destroy all the saved DCs */
 506
 507     while (first_dcs)
 508     {
 509         DC *next = first_dcs->saved_dc;
 510         free_dc_state( first_dcs );
 511         first_dcs = next;
 512     }
 513     return TRUE;
 514 }
 515
 516
 517 /***********************************************************************
 518  *           SaveDC    (GDI32.@)
 519  */
 520 INT WINAPI SaveDC( HDC hdc )
 521 {
 522     DC * dc;
 523     INT ret = 0;
 524
 525     if ((dc = get_dc_ptr( hdc )))
 526     {
 527         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 528         ret = physdev->funcs->pSaveDC( physdev );
 529         release_dc_ptr( dc );
 530     }
 531     return ret;
 532 }
 533
 534
 535 /***********************************************************************
 536  *           RestoreDC    (GDI32.@)
 537  */
 538 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 539 {
 540     PHYSDEV physdev;
 541     DC *dc;
 542     BOOL success = FALSE;
 543
 544     TRACE("%p %d\n", hdc, level );
 545     if ((dc = get_dc_ptr( hdc )))
 546     {
 547         update_dc( dc );
 548         physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 549         success = physdev->funcs->pRestoreDC( physdev, level );
 550         release_dc_ptr( dc );
 551     }
 552     return success;
 553 }
 554
 555
 556 /***********************************************************************
 557  *           CreateDCW    (GDI32.@)
 558  */
 559 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 560                       const DEVMODEW *initData )
 561 {
 562     HDC hdc;
 563     DC * dc;
 564     const struct gdi_dc_funcs *funcs;
 565     WCHAR buf[300];
 566
 567     GDI_CheckNotLock();
 568
 569     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 570     {
 571         if (!driver)
 572         {
 573             ERR( "no device found for %s\n", debugstr_w(device) );
 574             return 0;
 575         }
 576         strcpyW(buf, driver);
 577     }
 578
 579     if (!(funcs = DRIVER_load_driver( buf )))
 580     {
 581         ERR( "no driver found for %s\n", debugstr_w(buf) );
 582         return 0;
 583     }
 584     if (!(dc = alloc_dc_ptr( OBJ_DC ))) return 0;
 585     hdc = dc->hSelf;
 586
 587     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 588
 589     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 590           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 591
 592     if (funcs->pCreateDC)
 593     {
 594         if (!funcs->pCreateDC( &dc->physDev, buf, device, output, initData ))
 595         {
 596             WARN("creation aborted by device\n" );
 597             free_dc_ptr( dc );
 598             return 0;
 599         }
 600     }
 601
 602     dc->vis_rect.left   = 0;
 603     dc->vis_rect.top    = 0;
 604     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 605     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 606
 607     DC_InitDC( dc );
 608     release_dc_ptr( dc );
 609     return hdc;
 610 }
 611
 612
 613 /***********************************************************************
 614  *           CreateDCA    (GDI32.@)
 615  */
 616 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 617                       const DEVMODEA *initData )
 618 {
 619     UNICODE_STRING driverW, deviceW, outputW;
 620     DEVMODEW *initDataW;
 621     HDC ret;
 622
 623     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 624     else driverW.Buffer = NULL;
 625
 626     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 627     else deviceW.Buffer = NULL;
 628
 629     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 630     else outputW.Buffer = NULL;
 631
 632     initDataW = NULL;
 633     if (initData)
 634     {
 635         /* don't convert initData for DISPLAY driver, it's not used */
 636         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 637             initDataW = GdiConvertToDevmodeW(initData);
 638     }
 639
 640     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 641
 642     RtlFreeUnicodeString(&driverW);
 643     RtlFreeUnicodeString(&deviceW);
 644     RtlFreeUnicodeString(&outputW);
 645     HeapFree(GetProcessHeap(), 0, initDataW);
 646     return ret;
 647 }
 648
 649
 650 /***********************************************************************
 651  *           CreateICA    (GDI32.@)
 652  */
 653 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 654                           const DEVMODEA* initData )
 655 {
 656       /* Nothing special yet for ICs */
 657     return CreateDCA( driver, device, output, initData );
 658 }
 659
 660
 661 /***********************************************************************
 662  *           CreateICW    (GDI32.@)
 663  */
 664 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 665                           const DEVMODEW* initData )
 666 {
 667       /* Nothing special yet for ICs */
 668     return CreateDCW( driver, device, output, initData );
 669 }
 670
 671
 672 /***********************************************************************
 673  *           CreateCompatibleDC   (GDI32.@)
 674  */
 675 HDC WINAPI CreateCompatibleDC( HDC hdc )
 676 {
 677     DC *dc, *origDC;
 678     HDC ret;
 679     const struct gdi_dc_funcs *funcs = &null_driver;
 680     PHYSDEV physDev = NULL;
 681
 682     GDI_CheckNotLock();
 683
 684     if (hdc)
 685     {
 686         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 687         physDev = GET_DC_PHYSDEV( origDC, pCreateCompatibleDC );
 688         funcs = physDev->funcs;
 689         release_dc_ptr( origDC );
 690     }
 691
 692     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) return 0;
 693
 694     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 695
 696     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 697     dc->vis_rect.left   = 0;
 698     dc->vis_rect.top    = 0;
 699     dc->vis_rect.right  = 1;
 700     dc->vis_rect.bottom = 1;
 701     dc->device_rect = dc->vis_rect;
 702
 703     ret = dc->hSelf;
 704
 705     if (!funcs->pCreateCompatibleDC( physDev, &dc->physDev ))
 706     {
 707         WARN("creation aborted by device\n");
 708         free_dc_ptr( dc );
 709         return 0;
 710     }
 711
 712     if (!dib_driver.pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 713     {
 714         free_dc_ptr( dc );
 715         return 0;
 716     }
 717     physDev = GET_DC_PHYSDEV( dc, pSelectBitmap );
 718     physDev->funcs->pSelectBitmap( physDev, dc->hBitmap );
 719
 720     DC_InitDC( dc );
 721     release_dc_ptr( dc );
 722     return ret;
 723 }
 724
 725
 726 /***********************************************************************
 727  *           DeleteDC    (GDI32.@)
 728  */
 729 BOOL WINAPI DeleteDC( HDC hdc )
 730 {
 731     DC * dc;
 732
 733     TRACE("%p\n", hdc );
 734
 735     GDI_CheckNotLock();
 736
 737     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 738     if (dc->refcount != 1)
 739     {
 740         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 741         release_dc_ptr( dc );
 742         return FALSE;
 743     }
 744
 745     /* Call hook procedure to check whether is it OK to delete this DC */
 746     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 747     {
 748         release_dc_ptr( dc );
 749         return TRUE;
 750     }
 751
 752     while (dc->saveLevel)
 753     {
 754         DC *dcs = dc->saved_dc;
 755         dc->saved_dc = dcs->saved_dc;
 756         dc->saveLevel--;
 757         free_dc_state( dcs );
 758     }
 759
 760     AbortPath( hdc );
 761     SelectObject( hdc, GetStockObject(BLACK_PEN) );
 762     SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 763     SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 764     SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 765
 766     free_dc_ptr( dc );
 767     return TRUE;
 768 }
 769
 770
 771 /***********************************************************************
 772  *           ResetDCW    (GDI32.@)
 773  */
 774 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 775 {
 776     DC *dc;
 777     HDC ret = 0;
 778
 779     if ((dc = get_dc_ptr( hdc )))
 780     {
 781         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 782         ret = physdev->funcs->pResetDC( physdev, devmode );
 783         if (ret)  /* reset the visible region */
 784         {
 785             dc->dirty = 0;
 786             dc->vis_rect.left   = 0;
 787             dc->vis_rect.top    = 0;
 788             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 789             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 790             if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 791             dc->hVisRgn = 0;
 792             update_dc_clipping( dc );
 793         }
 794         release_dc_ptr( dc );
 795     }
 796     return ret;
 797 }
 798
 799
 800 /***********************************************************************
 801  *           ResetDCA    (GDI32.@)
 802  */
 803 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 804 {
 805     DEVMODEW *devmodeW;
 806     HDC ret;
 807
 808     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 809     else devmodeW = NULL;
 810
 811     ret = ResetDCW(hdc, devmodeW);
 812
 813     HeapFree(GetProcessHeap(), 0, devmodeW);
 814     return ret;
 815 }
 816
 817
 818 /***********************************************************************
 819  *           GetDeviceCaps    (GDI32.@)
 820  */
 821 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 822 {
 823     DC *dc;
 824     INT ret = 0;
 825
 826     if ((dc = get_dc_ptr( hdc )))
 827     {
 828         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 829         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 830         release_dc_ptr( dc );
 831     }
 832     return ret;
 833 }
 834
 835
 836 /***********************************************************************
 837  *              GetBkColor (GDI32.@)
 838  */
 839 COLORREF WINAPI GetBkColor( HDC hdc )
 840 {
 841     COLORREF ret = 0;
 842     DC * dc = get_dc_ptr( hdc );
 843     if (dc)
 844     {
 845         ret = dc->backgroundColor;
 846         release_dc_ptr( dc );
 847     }
 848     return ret;
 849 }
 850
 851
 852 /***********************************************************************
 853  *           SetBkColor    (GDI32.@)
 854  */
 855 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 856 {
 857     COLORREF ret = CLR_INVALID;
 858     DC * dc = get_dc_ptr( hdc );
 859
 860     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 861
 862     if (dc)
 863     {
 864         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 865         ret = dc->backgroundColor;
 866         dc->backgroundColor = physdev->funcs->pSetBkColor( physdev, color );
 867         release_dc_ptr( dc );
 868     }
 869     return ret;
 870 }
 871
 872
 873 /***********************************************************************
 874  *              GetTextColor (GDI32.@)
 875  */
 876 COLORREF WINAPI GetTextColor( HDC hdc )
 877 {
 878     COLORREF ret = 0;
 879     DC * dc = get_dc_ptr( hdc );
 880     if (dc)
 881     {
 882         ret = dc->textColor;
 883         release_dc_ptr( dc );
 884     }
 885     return ret;
 886 }
 887
 888
 889 /***********************************************************************
 890  *           SetTextColor    (GDI32.@)
 891  */
 892 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 893 {
 894     COLORREF ret = CLR_INVALID;
 895     DC * dc = get_dc_ptr( hdc );
 896
 897     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 898
 899     if (dc)
 900     {
 901         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 902         ret = dc->textColor;
 903         dc->textColor = physdev->funcs->pSetTextColor( physdev, color );
 904         release_dc_ptr( dc );
 905     }
 906     return ret;
 907 }
 908
 909
 910 /***********************************************************************
 911  *              GetTextAlign (GDI32.@)
 912  */
 913 UINT WINAPI GetTextAlign( HDC hdc )
 914 {
 915     UINT ret = 0;
 916     DC * dc = get_dc_ptr( hdc );
 917     if (dc)
 918     {
 919         ret = dc->textAlign;
 920         release_dc_ptr( dc );
 921     }
 922     return ret;
 923 }
 924
 925
 926 /***********************************************************************
 927  *           SetTextAlign    (GDI32.@)
 928  */
 929 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 930 {
 931     UINT ret = GDI_ERROR;
 932     DC *dc = get_dc_ptr( hdc );
 933
 934     TRACE("hdc=%p align=%d\n", hdc, align);
 935
 936     if (dc)
 937     {
 938         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
 939         align = physdev->funcs->pSetTextAlign( physdev, align );
 940         if (align != GDI_ERROR)
 941         {
 942             ret = dc->textAlign;
 943             dc->textAlign = align;
 944         }
 945         release_dc_ptr( dc );
 946     }
 947     return ret;
 948 }
 949
 950 /***********************************************************************
 951  *           GetDCOrgEx  (GDI32.@)
 952  */
 953 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
 954 {
 955     DC * dc;
 956
 957     if (!lpp) return FALSE;
 958     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
 959     lpp->x = dc->vis_rect.left;
 960     lpp->y = dc->vis_rect.top;
 961     release_dc_ptr( dc );
 962     return TRUE;
 963 }
 964
 965
 966 /***********************************************************************
 967  *              GetGraphicsMode (GDI32.@)
 968  */
 969 INT WINAPI GetGraphicsMode( HDC hdc )
 970 {
 971     INT ret = 0;
 972     DC * dc = get_dc_ptr( hdc );
 973     if (dc)
 974     {
 975         ret = dc->GraphicsMode;
 976         release_dc_ptr( dc );
 977     }
 978     return ret;
 979 }
 980
 981
 982 /***********************************************************************
 983  *           SetGraphicsMode    (GDI32.@)
 984  */
 985 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
 986 {
 987     INT ret = 0;
 988     DC *dc = get_dc_ptr( hdc );
 989
 990     /* One would think that setting the graphics mode to GM_COMPATIBLE
 991      * would also reset the world transformation matrix to the unity
 992      * matrix. However, in Windows, this is not the case. This doesn't
 993      * make a lot of sense to me, but that's the way it is.
 994      */
 995     if (!dc) return 0;
 996     if ((mode > 0) && (mode <= GM_LAST))
 997     {
 998         ret = dc->GraphicsMode;
 999         dc->GraphicsMode = mode;
1000     }
1001     release_dc_ptr( dc );
1002     return ret;
1003 }
1004
1005
1006 /***********************************************************************
1007  *              GetArcDirection (GDI32.@)
1008  */
1009 INT WINAPI GetArcDirection( HDC hdc )
1010 {
1011     INT ret = 0;
1012     DC * dc = get_dc_ptr( hdc );
1013     if (dc)
1014     {
1015         ret = dc->ArcDirection;
1016         release_dc_ptr( dc );
1017     }
1018     return ret;
1019 }
1020
1021
1022 /***********************************************************************
1023  *           SetArcDirection    (GDI32.@)
1024  */
1025 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1026 {
1027     DC * dc;
1028     INT ret = 0;
1029
1030     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1031     {
1032         SetLastError(ERROR_INVALID_PARAMETER);
1033         return 0;
1034     }
1035
1036     if ((dc = get_dc_ptr( hdc )))
1037     {
1038         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1039         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1040         if (dir)
1041         {
1042             ret = dc->ArcDirection;
1043             dc->ArcDirection = dir;
1044         }
1045         release_dc_ptr( dc );
1046     }
1047     return ret;
1048 }
1049
1050
1051 /***********************************************************************
1052  *           GetWorldTransform    (GDI32.@)
1053  */
1054 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1055 {
1056     DC * dc;
1057     if (!xform) return FALSE;
1058     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1059     *xform = dc->xformWorld2Wnd;
1060     release_dc_ptr( dc );
1061     return TRUE;
1062 }
1063
1064
1065 /***********************************************************************
1066  *           GetTransform    (GDI32.@)
1067  *
1068  * Undocumented
1069  *
1070  * Returns one of the co-ordinate space transforms
1071  *
1072  * PARAMS
1073  *    hdc   [I] Device context.
1074  *    which [I] Which xform to return:
1075  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1076  *                  0x304 Page -> Device transform (the mapping mode transform).
1077  *                  0x204 World -> Device transform (the combination of the above two).
1078  *                  0x402 Device -> World transform (the inversion of the above).
1079  *    xform [O] The xform.
1080  *
1081  */
1082 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1083 {
1084     BOOL ret = TRUE;
1085     DC *dc = get_dc_ptr( hdc );
1086     if (!dc) return FALSE;
1087
1088     switch(which)
1089     {
1090     case 0x203:
1091         *xform = dc->xformWorld2Wnd;
1092         break;
1093
1094     case 0x304:
1095         construct_window_to_viewport(dc, xform);
1096         break;
1097
1098     case 0x204:
1099         *xform = dc->xformWorld2Vport;
1100         break;
1101
1102     case 0x402:
1103         *xform = dc->xformVport2World;
1104         break;
1105
1106     default:
1107         FIXME("Unknown code %x\n", which);
1108         ret = FALSE;
1109     }
1110
1111     release_dc_ptr( dc );
1112     return ret;
1113 }
1114
1115
1116 /****************************************************************************
1117  * CombineTransform [GDI32.@]
1118  * Combines two transformation matrices.
1119  *
1120  * PARAMS
1121  *    xformResult [O] Stores the result of combining the two matrices
1122  *    xform1      [I] Specifies the first matrix to apply
1123  *    xform2      [I] Specifies the second matrix to apply
1124  *
1125  * REMARKS
1126  *    The same matrix can be passed in for more than one of the parameters.
1127  *
1128  * RETURNS
1129  *  Success: TRUE.
1130  *  Failure: FALSE. Use GetLastError() to determine the cause.
1131  */
1132 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1133     const XFORM *xform2 )
1134 {
1135     XFORM xformTemp;
1136
1137     /* Check for illegal parameters */
1138     if (!xformResult || !xform1 || !xform2)
1139         return FALSE;
1140
1141     /* Create the result in a temporary XFORM, since xformResult may be
1142      * equal to xform1 or xform2 */
1143     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1144                      xform1->eM12 * xform2->eM21;
1145     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1146                      xform1->eM12 * xform2->eM22;
1147     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1148                      xform1->eM22 * xform2->eM21;
1149     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1150                      xform1->eM22 * xform2->eM22;
1151     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1152                      xform1->eDy  * xform2->eM21 +
1153                      xform2->eDx;
1154     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1155                      xform1->eDy  * xform2->eM22 +
1156                      xform2->eDy;
1157
1158     /* Copy the result to xformResult */
1159     *xformResult = xformTemp;
1160
1161     return TRUE;
1162 }
1163
1164
1165 /***********************************************************************
1166  *           SetDCHook   (GDI32.@)
1167  *
1168  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1169  */
1170 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1171 {
1172     DC *dc = get_dc_ptr( hdc );
1173
1174     if (!dc) return FALSE;
1175
1176     dc->dwHookData = dwHookData;
1177     dc->hookProc = hookProc;
1178     release_dc_ptr( dc );
1179     return TRUE;
1180 }
1181
1182
1183 /***********************************************************************
1184  *           GetDCHook   (GDI32.@)
1185  *
1186  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1187  */
1188 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1189 {
1190     DC *dc = get_dc_ptr( hdc );
1191     DWORD_PTR ret;
1192
1193     if (!dc) return 0;
1194     if (proc) *proc = dc->hookProc;
1195     ret = dc->dwHookData;
1196     release_dc_ptr( dc );
1197     return ret;
1198 }
1199
1200
1201 /***********************************************************************
1202  *           SetHookFlags   (GDI32.@)
1203  *
1204  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1205  */
1206 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1207 {
1208     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1209     LONG ret = 0;
1210
1211     if (!dc) return 0;
1212
1213     /* "Undocumented Windows" info is slightly confusing. */
1214
1215     TRACE("hDC %p, flags %04x\n",hdc,flags);
1216
1217     if (flags & DCHF_INVALIDATEVISRGN)
1218         ret = InterlockedExchange( &dc->dirty, 1 );
1219     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1220         ret = InterlockedExchange( &dc->dirty, 0 );
1221
1222     GDI_ReleaseObj( hdc );
1223     return ret;
1224 }
1225
1226 /***********************************************************************
1227  *           SetICMMode    (GDI32.@)
1228  */
1229 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1230 {
1231 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1232     if (iEnableICM == ICM_OFF) return ICM_OFF;
1233     if (iEnableICM == ICM_ON) return 0;
1234     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1235     return 0;
1236 }
1237
1238 /***********************************************************************
1239  *           GetDeviceGammaRamp    (GDI32.@)
1240  */
1241 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1242 {
1243     BOOL ret = FALSE;
1244     DC *dc = get_dc_ptr( hDC );
1245
1246     TRACE("%p, %p\n", hDC, ptr);
1247     if( dc )
1248     {
1249         if (GetObjectType( hDC ) != OBJ_MEMDC)
1250         {
1251             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1252             ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1253         }
1254         else SetLastError( ERROR_INVALID_PARAMETER );
1255         release_dc_ptr( dc );
1256     }
1257     return ret;
1258 }
1259
1260 /***********************************************************************
1261  *           SetDeviceGammaRamp    (GDI32.@)
1262  */
1263 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1264 {
1265     BOOL ret = FALSE;
1266     DC *dc = get_dc_ptr( hDC );
1267
1268     TRACE("%p, %p\n", hDC, ptr);
1269     if( dc )
1270     {
1271         if (GetObjectType( hDC ) != OBJ_MEMDC)
1272         {
1273             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1274             ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1275         }
1276         else SetLastError( ERROR_INVALID_PARAMETER );
1277         release_dc_ptr( dc );
1278     }
1279     return ret;
1280 }
1281
1282 /***********************************************************************
1283  *           GetColorSpace    (GDI32.@)
1284  */
1285 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1286 {
1287 /*FIXME    Need to do whatever GetColorSpace actually does */
1288     return 0;
1289 }
1290
1291 /***********************************************************************
1292  *           CreateColorSpaceA    (GDI32.@)
1293  */
1294 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1295 {
1296   FIXME( "stub\n" );
1297   return 0;
1298 }
1299
1300 /***********************************************************************
1301  *           CreateColorSpaceW    (GDI32.@)
1302  */
1303 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1304 {
1305   FIXME( "stub\n" );
1306   return 0;
1307 }
1308
1309 /***********************************************************************
1310  *           DeleteColorSpace     (GDI32.@)
1311  */
1312 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1313 {
1314   FIXME( "stub\n" );
1315
1316   return TRUE;
1317 }
1318
1319 /***********************************************************************
1320  *           SetColorSpace     (GDI32.@)
1321  */
1322 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1323 {
1324   FIXME( "stub\n" );
1325
1326   return hColorSpace;
1327 }
1328
1329 /***********************************************************************
1330  *           GetBoundsRect    (GDI32.@)
1331  */
1332 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1333 {
1334     PHYSDEV physdev;
1335     RECT device_rect;
1336     UINT ret;
1337     DC *dc = get_dc_ptr( hdc );
1338
1339     if ( !dc ) return 0;
1340
1341     physdev = GET_DC_PHYSDEV( dc, pGetBoundsRect );
1342     ret = physdev->funcs->pGetBoundsRect( physdev, &device_rect, DCB_RESET );
1343     if (!ret)
1344     {
1345         release_dc_ptr( dc );
1346         return 0;
1347     }
1348     if (dc->bounds_enabled && ret == DCB_SET) add_bounds_rect( &dc->bounds, &device_rect );
1349
1350     if (rect)
1351     {
1352         if (is_rect_empty( &dc->bounds ))
1353         {
1354             rect->left = rect->top = rect->right = rect->bottom = 0;
1355             ret = DCB_RESET;
1356         }
1357         else
1358         {
1359             *rect = dc->bounds;
1360             rect->left   = max( rect->left, 0 );
1361             rect->top    = max( rect->top, 0 );
1362             rect->right  = min( rect->right, dc->vis_rect.right - dc->vis_rect.left );
1363             rect->bottom = min( rect->bottom, dc->vis_rect.bottom - dc->vis_rect.top );
1364             ret = DCB_SET;
1365         }
1366         DPtoLP( hdc, (POINT *)rect, 2 );
1367     }
1368     else ret = 0;
1369
1370     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1371     release_dc_ptr( dc );
1372     return ret;
1373 }
1374
1375
1376 /***********************************************************************
1377  *           SetBoundsRect    (GDI32.@)
1378  */
1379 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1380 {
1381     PHYSDEV physdev;
1382     UINT ret;
1383     DC *dc;
1384
1385     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1386     if (!(dc = get_dc_ptr( hdc ))) return 0;
1387
1388     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
1389     ret = physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, flags );
1390     if (!ret)
1391     {
1392         release_dc_ptr( dc );
1393         return 0;
1394     }
1395
1396     ret = (dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE) |
1397           (is_rect_empty( &dc->bounds ) ? ret & DCB_SET : DCB_SET);
1398
1399     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1400
1401     if ((flags & DCB_ACCUMULATE) && rect)
1402     {
1403         RECT rc = *rect;
1404
1405         LPtoDP( hdc, (POINT *)&rc, 2 );
1406         add_bounds_rect( &dc->bounds, &rc );
1407     }
1408
1409     if (flags & DCB_ENABLE) dc->bounds_enabled = TRUE;
1410     if (flags & DCB_DISABLE) dc->bounds_enabled = FALSE;
1411
1412     release_dc_ptr( dc );
1413     return ret;
1414 }
1415
1416
1417 /***********************************************************************
1418  *              GetRelAbs               (GDI32.@)
1419  */
1420 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1421 {
1422     INT ret = 0;
1423     DC *dc = get_dc_ptr( hdc );
1424     if (dc)
1425     {
1426         ret = dc->relAbsMode;
1427         release_dc_ptr( dc );
1428     }
1429     return ret;
1430 }
1431
1432
1433
1434
1435 /***********************************************************************
1436  *              GetBkMode (GDI32.@)
1437  */
1438 INT WINAPI GetBkMode( HDC hdc )
1439 {
1440     INT ret = 0;
1441     DC * dc = get_dc_ptr( hdc );
1442     if (dc)
1443     {
1444         ret = dc->backgroundMode;
1445         release_dc_ptr( dc );
1446     }
1447     return ret;
1448 }
1449
1450
1451 /***********************************************************************
1452  *              SetBkMode (GDI32.@)
1453  */
1454 INT WINAPI SetBkMode( HDC hdc, INT mode )
1455 {
1456     INT ret = 0;
1457     DC *dc;
1458
1459     if ((mode <= 0) || (mode > BKMODE_LAST))
1460     {
1461         SetLastError(ERROR_INVALID_PARAMETER);
1462         return 0;
1463     }
1464     if ((dc = get_dc_ptr( hdc )))
1465     {
1466         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1467         mode = physdev->funcs->pSetBkMode( physdev, mode );
1468         if (mode)
1469         {
1470             ret = dc->backgroundMode;
1471             dc->backgroundMode = mode;
1472         }
1473         release_dc_ptr( dc );
1474     }
1475     return ret;
1476 }
1477
1478
1479 /***********************************************************************
1480  *              GetROP2 (GDI32.@)
1481  */
1482 INT WINAPI GetROP2( HDC hdc )
1483 {
1484     INT ret = 0;
1485     DC * dc = get_dc_ptr( hdc );
1486     if (dc)
1487     {
1488         ret = dc->ROPmode;
1489         release_dc_ptr( dc );
1490     }
1491     return ret;
1492 }
1493
1494
1495 /***********************************************************************
1496  *              SetROP2 (GDI32.@)
1497  */
1498 INT WINAPI SetROP2( HDC hdc, INT mode )
1499 {
1500     INT ret = 0;
1501     DC *dc;
1502
1503     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1504     {
1505         SetLastError(ERROR_INVALID_PARAMETER);
1506         return 0;
1507     }
1508     if ((dc = get_dc_ptr( hdc )))
1509     {
1510         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1511         mode = physdev->funcs->pSetROP2( physdev, mode );
1512         if (mode)
1513         {
1514             ret = dc->ROPmode;
1515             dc->ROPmode = mode;
1516         }
1517         release_dc_ptr( dc );
1518     }
1519     return ret;
1520 }
1521
1522
1523 /***********************************************************************
1524  *              SetRelAbs (GDI32.@)
1525  */
1526 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1527 {
1528     INT ret = 0;
1529     DC *dc;
1530
1531     if ((mode != ABSOLUTE) && (mode != RELATIVE))
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, pSetRelAbs );
1539         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1540         if (mode)
1541         {
1542             ret = dc->relAbsMode;
1543             dc->relAbsMode = mode;
1544         }
1545         release_dc_ptr( dc );
1546     }
1547     return ret;
1548 }
1549
1550
1551 /***********************************************************************
1552  *              GetPolyFillMode (GDI32.@)
1553  */
1554 INT WINAPI GetPolyFillMode( HDC hdc )
1555 {
1556     INT ret = 0;
1557     DC * dc = get_dc_ptr( hdc );
1558     if (dc)
1559     {
1560         ret = dc->polyFillMode;
1561         release_dc_ptr( dc );
1562     }
1563     return ret;
1564 }
1565
1566
1567 /***********************************************************************
1568  *              SetPolyFillMode (GDI32.@)
1569  */
1570 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1571 {
1572     INT ret = 0;
1573     DC *dc;
1574
1575     if ((mode <= 0) || (mode > POLYFILL_LAST))
1576     {
1577         SetLastError(ERROR_INVALID_PARAMETER);
1578         return 0;
1579     }
1580     if ((dc = get_dc_ptr( hdc )))
1581     {
1582         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1583         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1584         if (mode)
1585         {
1586             ret = dc->polyFillMode;
1587             dc->polyFillMode = mode;
1588         }
1589         release_dc_ptr( dc );
1590     }
1591     return ret;
1592 }
1593
1594
1595 /***********************************************************************
1596  *              GetStretchBltMode (GDI32.@)
1597  */
1598 INT WINAPI GetStretchBltMode( HDC hdc )
1599 {
1600     INT ret = 0;
1601     DC * dc = get_dc_ptr( hdc );
1602     if (dc)
1603     {
1604         ret = dc->stretchBltMode;
1605         release_dc_ptr( dc );
1606     }
1607     return ret;
1608 }
1609
1610
1611 /***********************************************************************
1612  *              SetStretchBltMode (GDI32.@)
1613  */
1614 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1615 {
1616     INT ret = 0;
1617     DC *dc;
1618
1619     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1620     {
1621         SetLastError(ERROR_INVALID_PARAMETER);
1622         return 0;
1623     }
1624     if ((dc = get_dc_ptr( hdc )))
1625     {
1626         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1627         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1628         if (mode)
1629         {
1630             ret = dc->stretchBltMode;
1631             dc->stretchBltMode = mode;
1632         }
1633         release_dc_ptr( dc );
1634     }
1635     return ret;
1636 }
1637
1638
1639 /***********************************************************************
1640  *              GetMapMode (GDI32.@)
1641  */
1642 INT WINAPI GetMapMode( HDC hdc )
1643 {
1644     INT ret = 0;
1645     DC * dc = get_dc_ptr( hdc );
1646     if (dc)
1647     {
1648         ret = dc->MapMode;
1649         release_dc_ptr( dc );
1650     }
1651     return ret;
1652 }
1653
1654
1655 /***********************************************************************
1656  *              GetBrushOrgEx (GDI32.@)
1657  */
1658 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1659 {
1660     DC * dc = get_dc_ptr( hdc );
1661     if (!dc) return FALSE;
1662     pt->x = dc->brushOrgX;
1663     pt->y = dc->brushOrgY;
1664     release_dc_ptr( dc );
1665     return TRUE;
1666 }
1667
1668
1669 /***********************************************************************
1670  *              GetCurrentPositionEx (GDI32.@)
1671  */
1672 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1673 {
1674     DC * dc = get_dc_ptr( hdc );
1675     if (!dc) return FALSE;
1676     pt->x = dc->CursPosX;
1677     pt->y = dc->CursPosY;
1678     release_dc_ptr( dc );
1679     return TRUE;
1680 }
1681
1682
1683 /***********************************************************************
1684  *              GetViewportExtEx (GDI32.@)
1685  */
1686 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1687 {
1688     DC * dc = get_dc_ptr( hdc );
1689     if (!dc) return FALSE;
1690     size->cx = dc->vportExtX;
1691     size->cy = dc->vportExtY;
1692     release_dc_ptr( dc );
1693     return TRUE;
1694 }
1695
1696
1697 /***********************************************************************
1698  *              GetViewportOrgEx (GDI32.@)
1699  */
1700 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1701 {
1702     DC * dc = get_dc_ptr( hdc );
1703     if (!dc) return FALSE;
1704     pt->x = dc->vportOrgX;
1705     pt->y = dc->vportOrgY;
1706     release_dc_ptr( dc );
1707     return TRUE;
1708 }
1709
1710
1711 /***********************************************************************
1712  *              GetWindowExtEx (GDI32.@)
1713  */
1714 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1715 {
1716     DC * dc = get_dc_ptr( hdc );
1717     if (!dc) return FALSE;
1718     size->cx = dc->wndExtX;
1719     size->cy = dc->wndExtY;
1720     release_dc_ptr( dc );
1721     return TRUE;
1722 }
1723
1724
1725 /***********************************************************************
1726  *              GetWindowOrgEx (GDI32.@)
1727  */
1728 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1729 {
1730     DC * dc = get_dc_ptr( hdc );
1731     if (!dc) return FALSE;
1732     pt->x = dc->wndOrgX;
1733     pt->y = dc->wndOrgY;
1734     release_dc_ptr( dc );
1735     return TRUE;
1736 }
1737
1738
1739 /***********************************************************************
1740  *           GetLayout    (GDI32.@)
1741  *
1742  * Gets left->right or right->left text layout flags of a dc.
1743  *
1744  */
1745 DWORD WINAPI GetLayout(HDC hdc)
1746 {
1747     DWORD layout = GDI_ERROR;
1748
1749     DC * dc = get_dc_ptr( hdc );
1750     if (dc)
1751     {
1752         layout = dc->layout;
1753         release_dc_ptr( dc );
1754     }
1755
1756     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1757
1758     return layout;
1759 }
1760
1761 /***********************************************************************
1762  *           SetLayout    (GDI32.@)
1763  *
1764  * Sets left->right or right->left text layout flags of a dc.
1765  *
1766  */
1767 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1768 {
1769     DWORD oldlayout = GDI_ERROR;
1770
1771     DC * dc = get_dc_ptr( hdc );
1772     if (dc)
1773     {
1774         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1775         layout = physdev->funcs->pSetLayout( physdev, layout );
1776         if (layout != GDI_ERROR)
1777         {
1778             oldlayout = dc->layout;
1779             dc->layout = layout;
1780             if (layout != oldlayout)
1781             {
1782                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1783                 DC_UpdateXforms( dc );
1784             }
1785         }
1786         release_dc_ptr( dc );
1787     }
1788
1789     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1790
1791     return oldlayout;
1792 }
1793
1794 /***********************************************************************
1795  *           GetDCBrushColor    (GDI32.@)
1796  */
1797 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1798 {
1799     DC *dc;
1800     COLORREF dcBrushColor = CLR_INVALID;
1801
1802     TRACE("hdc(%p)\n", hdc);
1803
1804     dc = get_dc_ptr( hdc );
1805     if (dc)
1806     {
1807         dcBrushColor = dc->dcBrushColor;
1808         release_dc_ptr( dc );
1809     }
1810
1811     return dcBrushColor;
1812 }
1813
1814 /***********************************************************************
1815  *           SetDCBrushColor    (GDI32.@)
1816  */
1817 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1818 {
1819     DC *dc;
1820     COLORREF oldClr = CLR_INVALID;
1821
1822     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1823
1824     dc = get_dc_ptr( hdc );
1825     if (dc)
1826     {
1827         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1828         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1829         if (crColor != CLR_INVALID)
1830         {
1831             oldClr = dc->dcBrushColor;
1832             dc->dcBrushColor = crColor;
1833         }
1834         release_dc_ptr( dc );
1835     }
1836
1837     return oldClr;
1838 }
1839
1840 /***********************************************************************
1841  *           GetDCPenColor    (GDI32.@)
1842  */
1843 COLORREF WINAPI GetDCPenColor(HDC hdc)
1844 {
1845     DC *dc;
1846     COLORREF dcPenColor = CLR_INVALID;
1847
1848     TRACE("hdc(%p)\n", hdc);
1849
1850     dc = get_dc_ptr( hdc );
1851     if (dc)
1852     {
1853         dcPenColor = dc->dcPenColor;
1854         release_dc_ptr( dc );
1855     }
1856
1857     return dcPenColor;
1858 }
1859
1860 /***********************************************************************
1861  *           SetDCPenColor    (GDI32.@)
1862  */
1863 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
1864 {
1865     DC *dc;
1866     COLORREF oldClr = CLR_INVALID;
1867
1868     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1869
1870     dc = get_dc_ptr( hdc );
1871     if (dc)
1872     {
1873         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
1874         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
1875         if (crColor != CLR_INVALID)
1876         {
1877             oldClr = dc->dcPenColor;
1878             dc->dcPenColor = crColor;
1879         }
1880         release_dc_ptr( dc );
1881     }
1882
1883     return oldClr;
1884 }
1885
1886 /***********************************************************************
1887  *           CancelDC    (GDI32.@)
1888  */
1889 BOOL WINAPI CancelDC(HDC hdc)
1890 {
1891     FIXME("stub\n");
1892     return TRUE;
1893 }
1894
1895 /*******************************************************************
1896  *      GetMiterLimit [GDI32.@]
1897  *
1898  *
1899  */
1900 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
1901 {
1902     BOOL bRet = FALSE;
1903     DC *dc;
1904
1905     TRACE("(%p,%p)\n", hdc, peLimit);
1906
1907     dc = get_dc_ptr( hdc );
1908     if (dc)
1909     {
1910         if (peLimit)
1911             *peLimit = dc->miterLimit;
1912
1913         release_dc_ptr( dc );
1914         bRet = TRUE;
1915     }
1916     return bRet;
1917 }
1918
1919 /*******************************************************************
1920  *      SetMiterLimit [GDI32.@]
1921  *
1922  *
1923  */
1924 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
1925 {
1926     BOOL bRet = FALSE;
1927     DC *dc;
1928
1929     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
1930
1931     dc = get_dc_ptr( hdc );
1932     if (dc)
1933     {
1934         if (peOldLimit)
1935             *peOldLimit = dc->miterLimit;
1936         dc->miterLimit = eNewLimit;
1937         release_dc_ptr( dc );
1938         bRet = TRUE;
1939     }
1940     return bRet;
1941 }
1942
1943 /*******************************************************************
1944  *      GdiIsMetaPrintDC [GDI32.@]
1945  */
1946 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
1947 {
1948     FIXME("%p\n", hdc);
1949     return FALSE;
1950 }
1951
1952 /*******************************************************************
1953  *      GdiIsMetaFileDC [GDI32.@]
1954  */
1955 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
1956 {
1957     TRACE("%p\n", hdc);
1958
1959     switch( GetObjectType( hdc ) )
1960     {
1961     case OBJ_METADC:
1962     case OBJ_ENHMETADC:
1963         return TRUE;
1964     }
1965     return FALSE;
1966 }
1967
1968 /*******************************************************************
1969  *      GdiIsPlayMetafileDC [GDI32.@]
1970  */
1971 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
1972 {
1973     FIXME("%p\n", hdc);
1974     return FALSE;
1975 }