objects/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  */
   7
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include "gdi.h"
  11 #include "bitmap.h"
  12 #include "metafile.h"
  13 #include "stddebug.h"
  14 #include "color.h"
  15 #include "debug.h"
  16 #include "font.h"
  17 #include "xmalloc.h"
  18
  19 static DeviceCaps * displayDevCaps = NULL;
  20
  21 extern void CLIPPING_UpdateGCRegion( DC * dc );     /* objects/clipping.c */
  22
  23   /* Default DC values */
  24 static const WIN_DC_INFO DC_defaultValues =
  25 {
  26     0,                      /* flags */
  27     NULL,                   /* devCaps */
  28     0,                      /* hMetaFile */
  29     0,                      /* hClipRgn */
  30     0,                      /* hVisRgn */
  31     0,                      /* hGCClipRgn */
  32     STOCK_BLACK_PEN,        /* hPen */
  33     STOCK_WHITE_BRUSH,      /* hBrush */
  34     STOCK_SYSTEM_FONT,      /* hFont */
  35     0,                      /* hBitmap */
  36     0,                      /* hFirstBitmap */
  37     0,                      /* hDevice */
  38     STOCK_DEFAULT_PALETTE,  /* hPalette */
  39     R2_COPYPEN,             /* ROPmode */
  40     ALTERNATE,              /* polyFillMode */
  41     BLACKONWHITE,           /* stretchBltMode */
  42     ABSOLUTE,               /* relAbsMode */
  43     OPAQUE,                 /* backgroundMode */
  44     RGB( 255, 255, 255 ),   /* backgroundColor */
  45     RGB( 0, 0, 0 ),         /* textColor */
  46     0,                      /* backgroundPixel */
  47     0,                      /* textPixel */
  48     0,                      /* brushOrgX */
  49     0,                      /* brushOrgY */
  50     TA_LEFT | TA_TOP | TA_NOUPDATECP,  /* textAlign */
  51     0,                      /* charExtra */
  52     0,                      /* breakTotalExtra */
  53     0,                      /* breakCount */
  54     0,                      /* breakExtra */
  55     0,                      /* breakRem */
  56     1,                      /* bitsPerPixel */
  57     MM_TEXT,                /* MapMode */
  58     0,                      /* DCOrgX */
  59     0,                      /* DCOrgY */
  60     0,                      /* CursPosX */
  61     0,                      /* CursPosY */
  62     0,                      /* WndOrgX */
  63     0,                      /* WndOrgY */
  64     1,                      /* WndExtX */
  65     1,                      /* WndExtY */
  66     0,                      /* VportOrgX */
  67     0,                      /* VportOrgY */
  68     1,                      /* VportExtX */
  69     1                       /* VportExtY */
  70 };
  71
  72   /* ROP code to GC function conversion */
  73 const int DC_XROPfunction[16] =
  74 {
  75     GXclear,        /* R2_BLACK */
  76     GXnor,          /* R2_NOTMERGEPEN */
  77     GXandInverted,  /* R2_MASKNOTPEN */
  78     GXcopyInverted, /* R2_NOTCOPYPEN */
  79     GXandReverse,   /* R2_MASKPENNOT */
  80     GXinvert,       /* R2_NOT */
  81     GXxor,          /* R2_XORPEN */
  82     GXnand,         /* R2_NOTMASKPEN */
  83     GXand,          /* R2_MASKPEN */
  84     GXequiv,        /* R2_NOTXORPEN */
  85     GXnoop,         /* R2_NOP */
  86     GXorInverted,   /* R2_MERGENOTPEN */
  87     GXcopy,         /* R2_COPYPEN */
  88     GXorReverse,    /* R2_MERGEPENNOT */
  89     GXor,           /* R2_MERGEPEN */
  90     GXset           /* R2_WHITE */
  91 };
  92
  93
  94 /***********************************************************************
  95  *           DC_FillDevCaps
  96  *
  97  * Fill the device caps structure.
  98  */
  99 void DC_FillDevCaps( DeviceCaps * caps )
 100 {
 101     caps->version       = 0x300;
 102     caps->technology    = DT_RASDISPLAY;
 103     caps->horzSize      = WidthMMOfScreen(screen) * screenWidth / WidthOfScreen(screen);
 104     caps->vertSize      = HeightMMOfScreen(screen) * screenHeight / HeightOfScreen(screen);
 105     caps->horzRes       = screenWidth;
 106     caps->vertRes       = screenHeight;
 107     caps->bitsPixel     = screenDepth;
 108     caps->planes        = 1;
 109     caps->numBrushes    = 16+6;  /* 16 solid + 6 hatched brushes */
 110     caps->numPens       = 16;    /* 16 solid pens */
 111     caps->numMarkers    = 0;
 112     caps->numFonts      = 0;
 113     caps->numColors     = 1 << caps->bitsPixel;
 114     caps->pdeviceSize   = 0;
 115     caps->curveCaps     = CC_CIRCLES | CC_PIE | CC_CHORD | CC_ELLIPSES |
 116                           CC_WIDE | CC_STYLED | CC_WIDESTYLED |
 117                           CC_INTERIORS | CC_ROUNDRECT;
 118     caps->lineCaps      = LC_POLYLINE | LC_MARKER | LC_POLYMARKER | LC_WIDE |
 119                           LC_STYLED | LC_WIDESTYLED | LC_INTERIORS;
 120     caps->polygonalCaps = PC_POLYGON | PC_RECTANGLE | PC_WINDPOLYGON |
 121                           PC_SCANLINE | PC_WIDE | PC_STYLED |
 122                           PC_WIDESTYLED | PC_INTERIORS;
 123     caps->textCaps      = TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
 124                           TC_IA_ABLE | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE;
 125     caps->clipCaps      = CP_REGION;
 126     caps->rasterCaps    = RC_BITBLT | RC_BANDING | RC_SCALING | RC_BITMAP64 |
 127                           RC_DI_BITMAP | RC_PALETTE | RC_DIBTODEV | RC_BIGFONT|
 128                           RC_STRETCHBLT | RC_STRETCHDIB | RC_DEVBITS;
 129     caps->aspectX       = 36;  /* ?? */
 130     caps->aspectY       = 36;  /* ?? */
 131     caps->aspectXY      = 51;
 132     caps->logPixelsX    = (int)(caps->horzRes * 25.4 / caps->horzSize);
 133     caps->logPixelsY    = (int)(caps->vertRes * 25.4 / caps->vertSize);
 134     caps->sizePalette   = DefaultVisual(display,DefaultScreen(display))->map_entries;
 135     caps->numReserved   = 0;
 136     caps->colorRes      = 0;
 137 }
 138
 139
 140 /***********************************************************************
 141  *           DC_InitDC
 142  *
 143  * Setup device-specific DC values for a newly created DC.
 144  */
 145 void DC_InitDC( HDC hdc )
 146 {
 147     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 148     RealizeDefaultPalette( hdc );
 149     SetTextColor( hdc, dc->w.textColor );
 150     SetBkColor( hdc, dc->w.backgroundColor );
 151     SelectObject( hdc, dc->w.hPen );
 152     SelectObject( hdc, dc->w.hBrush );
 153     SelectObject( hdc, dc->w.hFont );
 154     XSetGraphicsExposures( display, dc->u.x.gc, False );
 155     XSetSubwindowMode( display, dc->u.x.gc, IncludeInferiors );
 156     CLIPPING_UpdateGCRegion( dc );
 157 }
 158
 159
 160 /***********************************************************************
 161  *           DC_SetupDCForPatBlt
 162  *
 163  * Setup the GC for a PatBlt operation using current brush.
 164  * If fMapColors is TRUE, X pixels are mapped to Windows colors.
 165  * Return FALSE if brush is BS_NULL, TRUE otherwise.
 166  */
 167 BOOL DC_SetupGCForPatBlt( DC * dc, GC gc, BOOL fMapColors )
 168 {
 169     XGCValues val;
 170     unsigned long mask;
 171     Pixmap pixmap = 0;
 172
 173     if (dc->u.x.brush.style == BS_NULL) return FALSE;
 174     if (dc->u.x.brush.pixel == -1)
 175     {
 176         /* Special case used for monochrome pattern brushes.
 177          * We need to swap foreground and background because
 178          * Windows does it the wrong way...
 179          */
 180         val.foreground = dc->w.backgroundPixel;
 181         val.background = dc->w.textPixel;
 182     }
 183     else
 184     {
 185         val.foreground = dc->u.x.brush.pixel;
 186         val.background = dc->w.backgroundPixel;
 187     }
 188     if (fMapColors && COLOR_PixelToPalette)
 189     {
 190         val.foreground = COLOR_PixelToPalette[val.foreground];
 191         val.background = COLOR_PixelToPalette[val.background];
 192     }
 193
 194     val.function = DC_XROPfunction[dc->w.ROPmode-1];
 195     val.fill_style = dc->u.x.brush.fillStyle;
 196     switch(val.fill_style)
 197     {
 198     case FillStippled:
 199     case FillOpaqueStippled:
 200         if (dc->w.backgroundMode==OPAQUE) val.fill_style = FillOpaqueStippled;
 201         val.stipple = dc->u.x.brush.pixmap;
 202         mask = GCStipple;
 203         break;
 204
 205     case FillTiled:
 206         if (fMapColors && COLOR_PixelToPalette)
 207         {
 208             register int x, y;
 209             XImage *image;
 210             pixmap = XCreatePixmap( display, rootWindow, 8, 8, screenDepth );
 211             image = XGetImage( display, dc->u.x.brush.pixmap, 0, 0, 8, 8,
 212                                AllPlanes, ZPixmap );
 213             for (y = 0; y < 8; y++)
 214                 for (x = 0; x < 8; x++)
 215                     XPutPixel( image, x, y,
 216                                COLOR_PixelToPalette[XGetPixel( image, x, y)] );
 217             XPutImage( display, pixmap, gc, image, 0, 0, 0, 0, 8, 8 );
 218             XDestroyImage( image );
 219             val.tile = pixmap;
 220         }
 221         else val.tile = dc->u.x.brush.pixmap;
 222         mask = GCTile;
 223         break;
 224
 225     default:
 226         mask = 0;
 227         break;
 228     }
 229     val.ts_x_origin = dc->w.DCOrgX + dc->w.brushOrgX;
 230     val.ts_y_origin = dc->w.DCOrgY + dc->w.brushOrgY;
 231     val.fill_rule = (dc->w.polyFillMode==WINDING) ? WindingRule : EvenOddRule;
 232     XChangeGC( display, gc,
 233                GCFunction | GCForeground | GCBackground | GCFillStyle |
 234                GCFillRule | GCTileStipXOrigin | GCTileStipYOrigin | mask,
 235                &val );
 236     if (pixmap) XFreePixmap( display, pixmap );
 237     return TRUE;
 238 }
 239
 240
 241 /***********************************************************************
 242  *           DC_SetupDCForBrush
 243  *
 244  * Setup dc->u.x.gc for drawing operations using current brush.
 245  * Return FALSE if brush is BS_NULL, TRUE otherwise.
 246  */
 247 BOOL DC_SetupGCForBrush( DC * dc )
 248 {
 249     return DC_SetupGCForPatBlt( dc, dc->u.x.gc, FALSE );
 250 }
 251
 252
 253 /***********************************************************************
 254  *           DC_SetupDCForPen
 255  *
 256  * Setup dc->u.x.gc for drawing operations using current pen.
 257  * Return FALSE if pen is PS_NULL, TRUE otherwise.
 258  */
 259 BOOL DC_SetupGCForPen( DC * dc )
 260 {
 261     XGCValues val;
 262
 263     if (dc->u.x.pen.style == PS_NULL) return FALSE;
 264
 265     if ((screenDepth <= 8) &&  /* FIXME: Should check for palette instead */
 266         ((dc->w.ROPmode == R2_BLACK) || (dc->w.ROPmode == R2_WHITE)))
 267     {
 268         val.function   = GXcopy;
 269         val.foreground = COLOR_ToPhysical( NULL, (dc->w.ROPmode == R2_BLACK) ?
 270                                                RGB(0,0,0) : RGB(255,255,255) );
 271     }
 272     else
 273     {
 274         val.function   = DC_XROPfunction[dc->w.ROPmode-1];
 275         val.foreground = dc->u.x.pen.pixel;
 276     }
 277     val.background = dc->w.backgroundPixel;
 278     val.fill_style = FillSolid;
 279     if ((dc->u.x.pen.style!=PS_SOLID) && (dc->u.x.pen.style!=PS_INSIDEFRAME))
 280     {
 281         XSetDashes( display, dc->u.x.gc, 0,
 282                     dc->u.x.pen.dashes, dc->u.x.pen.dash_len );
 283         val.line_style = (dc->w.backgroundMode == OPAQUE) ?
 284                               LineDoubleDash : LineOnOffDash;
 285     }
 286     else val.line_style = LineSolid;
 287     val.line_width = dc->u.x.pen.width;
 288     val.cap_style  = CapRound;
 289     val.join_style = JoinBevel;
 290     XChangeGC( display, dc->u.x.gc,
 291                GCFunction | GCForeground | GCBackground | GCLineWidth |
 292                GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle, &val );
 293     return TRUE;
 294 }
 295
 296
 297 /***********************************************************************
 298  *           DC_SetupGCForText
 299  *
 300  * Setup dc->u.x.gc for text drawing operations.
 301  * Return FALSE if the font is null, TRUE otherwise.
 302  */
 303 BOOL DC_SetupGCForText( DC * dc )
 304 {
 305     XGCValues val;
 306
 307     if (!dc->u.x.font.fstruct)
 308     {
 309         fprintf( stderr, "DC_SetupGCForText: fstruct is NULL. Please report this\n" );
 310         return FALSE;
 311     }
 312     val.function   = GXcopy;  /* Text is always GXcopy */
 313     val.foreground = dc->w.textPixel;
 314     val.background = dc->w.backgroundPixel;
 315     val.fill_style = FillSolid;
 316     val.font       = dc->u.x.font.fstruct->fid;
 317     XChangeGC( display, dc->u.x.gc,
 318                GCFunction | GCForeground | GCBackground | GCFillStyle |
 319                GCFont, &val );
 320     return TRUE;
 321 }
 322
 323
 324 /***********************************************************************
 325  *           GetDCState    (GDI.179)
 326  */
 327 HDC GetDCState( HDC hdc )
 328 {
 329     DC * newdc, * dc;
 330     HANDLE handle;
 331
 332     if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
 333     if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return 0;
 334     newdc = (DC *) GDI_HEAP_LIN_ADDR( handle );
 335
 336     dprintf_dc(stddeb, "GetDCState("NPFMT"): returning "NPFMT"\n", hdc, handle );
 337
 338     memset( &newdc->u.x, 0, sizeof(newdc->u.x) );
 339     memcpy( &newdc->w, &dc->w, sizeof(dc->w) );
 340     memcpy( &newdc->u.x.pen, &dc->u.x.pen, sizeof(dc->u.x.pen) );
 341     newdc->saveLevel = 0;
 342     newdc->w.flags |= DC_SAVED;
 343
 344     newdc->w.hGCClipRgn = 0;
 345     newdc->w.hVisRgn = CreateRectRgn( 0, 0, 0, 0 );
 346     CombineRgn( newdc->w.hVisRgn, dc->w.hVisRgn, 0, RGN_COPY );
 347     if (dc->w.hClipRgn)
 348     {
 349         newdc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 350         CombineRgn( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
 351     }
 352     COLOR_SetMapping( newdc, dc->u.x.pal.hMapping,
 353                       dc->u.x.pal.hRevMapping, dc->u.x.pal.mappingSize );
 354     return handle;
 355 }
 356
 357
 358 /***********************************************************************
 359  *           SetDCState    (GDI.180)
 360  */
 361 void SetDCState( HDC hdc, HDC hdcs )
 362 {
 363     DC * dc, * dcs;
 364     HRGN hVisRgn, hClipRgn, hGCClipRgn;
 365
 366     if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
 367     if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return;
 368     if (!dcs->w.flags & DC_SAVED) return;
 369     dprintf_dc(stddeb, "SetDCState: "NPFMT" "NPFMT"\n", hdc, hdcs );
 370
 371       /* Save the regions before overwriting everything */
 372     hVisRgn    = dc->w.hVisRgn;
 373     hClipRgn   = dc->w.hClipRgn;
 374     hGCClipRgn = dc->w.hGCClipRgn;
 375     memcpy( &dc->w, &dcs->w, sizeof(dc->w) );
 376     memcpy( &dc->u.x.pen, &dcs->u.x.pen, sizeof(dc->u.x.pen) );
 377     dc->w.flags &= ~DC_SAVED;
 378
 379       /* Restore the regions */
 380     dc->w.hVisRgn    = hVisRgn;
 381     dc->w.hClipRgn   = hClipRgn;
 382     dc->w.hGCClipRgn = hGCClipRgn;
 383     CombineRgn( dc->w.hVisRgn, dcs->w.hVisRgn, 0, RGN_COPY );
 384     SelectClipRgn( hdc, dcs->w.hClipRgn );
 385
 386     SelectObject( hdc, dcs->w.hBrush );
 387     SelectObject( hdc, dcs->w.hFont );
 388     COLOR_SetMapping( dc, dcs->u.x.pal.hMapping,
 389                       dcs->u.x.pal.hRevMapping, dcs->u.x.pal.mappingSize );
 390 }
 391
 392
 393 /***********************************************************************
 394  *           SaveDC    (GDI.30)
 395  */
 396 int SaveDC( HDC hdc )
 397 {
 398     HDC hdcs;
 399     DC * dc, * dcs;
 400
 401     dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 402     if (!dc)
 403     {
 404         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 405         if (!dc) return 0;
 406         MF_MetaParam0(dc, META_SAVEDC);
 407         return 1;  /* ?? */
 408     }
 409     if (!(hdcs = GetDCState( hdc ))) return 0;
 410     dcs = (DC *) GDI_HEAP_LIN_ADDR( hdcs );
 411     dcs->header.hNext = dc->header.hNext;
 412     dc->header.hNext = hdcs;
 413     dprintf_dc(stddeb, "SaveDC("NPFMT"): returning %d\n", hdc, dc->saveLevel+1 );
 414     return ++dc->saveLevel;
 415 }
 416
 417
 418 /***********************************************************************
 419  *           RestoreDC    (GDI.39)
 420  */
 421 BOOL RestoreDC( HDC hdc, short level )
 422 {
 423     DC * dc, * dcs;
 424
 425     dprintf_dc(stddeb, "RestoreDC: "NPFMT" %d\n", hdc, level );
 426     dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 427     if (!dc)
 428     {
 429         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 430         if (!dc) return FALSE;
 431         if (level != -1) return FALSE;
 432         MF_MetaParam1(dc, META_RESTOREDC, level);
 433         return TRUE;
 434     }
 435     if (level == -1) level = dc->saveLevel;
 436     if ((level < 1) || (level > (short)dc->saveLevel)) return FALSE;
 437
 438     while ((short)dc->saveLevel >= level)
 439     {
 440         HDC hdcs = dc->header.hNext;
 441         if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return FALSE;
 442         dc->header.hNext = dcs->header.hNext;
 443         if ((short)--dc->saveLevel < level) SetDCState( hdc, hdcs );
 444         DeleteDC( hdcs );
 445     }
 446     return TRUE;
 447 }
 448
 449
 450 /***********************************************************************
 451  *           CreateDC    (GDI.53)
 452  */
 453 HDC CreateDC( LPSTR driver, LPSTR device, LPSTR output, LPSTR initData )
 454 {
 455     DC * dc;
 456     HANDLE handle;
 457
 458     handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
 459     if (!handle) return 0;
 460     dc = (DC *) GDI_HEAP_LIN_ADDR( handle );
 461
 462     dprintf_dc(stddeb, "CreateDC(%s %s %s): returning "NPFMT"\n",
 463             driver, device, output, handle );
 464
 465     if (!displayDevCaps)
 466     {
 467         displayDevCaps = (DeviceCaps *) xmalloc( sizeof(DeviceCaps) );
 468         DC_FillDevCaps( displayDevCaps );
 469     }
 470
 471     dc->saveLevel = 0;
 472     memcpy( &dc->w, &DC_defaultValues, sizeof(DC_defaultValues) );
 473     memset( &dc->u.x, 0, sizeof(dc->u.x) );
 474
 475     dc->u.x.drawable   = rootWindow;
 476     dc->u.x.gc         = XCreateGC( display, dc->u.x.drawable, 0, NULL );
 477     dc->w.flags        = 0;
 478     dc->w.devCaps      = displayDevCaps;
 479     dc->w.bitsPerPixel = displayDevCaps->bitsPixel;
 480     dc->w.hVisRgn      = CreateRectRgn( 0, 0, displayDevCaps->horzRes,
 481                                         displayDevCaps->vertRes );
 482     if (!dc->w.hVisRgn)
 483     {
 484         GDI_HEAP_FREE( handle );
 485         return 0;
 486     }
 487
 488     DC_InitDC( handle );
 489
 490     return handle;
 491 }
 492
 493
 494 /***********************************************************************
 495  *           CreateIC    (GDI.153)
 496  */
 497 HDC CreateIC( LPSTR driver, LPSTR device, LPSTR output, LPSTR initData )
 498 {
 499       /* Nothing special yet for ICs */
 500     return CreateDC( driver, device, output, initData );
 501 }
 502
 503
 504 /***********************************************************************
 505  *           CreateCompatibleDC    (GDI.52)
 506  */
 507 HDC CreateCompatibleDC( HDC hdc )
 508 {
 509     DC * dc;
 510     HANDLE handle;
 511     HBITMAP hbitmap;
 512     BITMAPOBJ *bmp;
 513
 514     handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
 515     if (!handle) return 0;
 516     dc = (DC *) GDI_HEAP_LIN_ADDR( handle );
 517
 518     dprintf_dc(stddeb, "CreateCompatibleDC("NPFMT"): returning "NPFMT"\n", hdc, handle );
 519
 520       /* Create default bitmap */
 521     if (!(hbitmap = CreateBitmap( 1, 1, 1, 1, NULL )))
 522     {
 523         GDI_HEAP_FREE( handle );
 524         return 0;
 525     }
 526     bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 527
 528     dc->saveLevel = 0;
 529     memcpy( &dc->w, &DC_defaultValues, sizeof(DC_defaultValues) );
 530     memset( &dc->u.x, 0, sizeof(dc->u.x) );
 531
 532     dc->u.x.drawable   = bmp->pixmap;
 533     dc->u.x.gc         = XCreateGC( display, dc->u.x.drawable, 0, NULL );
 534     dc->w.flags        = DC_MEMORY;
 535     dc->w.bitsPerPixel = 1;
 536     dc->w.devCaps      = displayDevCaps;
 537     dc->w.hBitmap      = hbitmap;
 538     dc->w.hFirstBitmap = hbitmap;
 539     dc->w.hVisRgn      = CreateRectRgn( 0, 0, 1, 1 );
 540
 541     if (!dc->w.hVisRgn)
 542     {
 543         DeleteObject( hbitmap );
 544         GDI_HEAP_FREE( handle );
 545         return 0;
 546     }
 547
 548     DC_InitDC( handle );
 549
 550     return handle;
 551 }
 552
 553
 554 /***********************************************************************
 555  *           DeleteDC    (GDI.68)
 556  */
 557 BOOL DeleteDC( HDC hdc )
 558 {
 559     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 560     if (!dc) return FALSE;
 561
 562     dprintf_dc(stddeb, "DeleteDC: "NPFMT"\n", hdc );
 563
 564     while (dc->saveLevel)
 565     {
 566         DC * dcs;
 567         HDC hdcs = dc->header.hNext;
 568         if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
 569         dc->header.hNext = dcs->header.hNext;
 570         dc->saveLevel--;
 571         DeleteDC( hdcs );
 572     }
 573
 574     if (!(dc->w.flags & DC_SAVED))
 575     {
 576         SelectObject( hdc, STOCK_BLACK_PEN );
 577         SelectObject( hdc, STOCK_WHITE_BRUSH );
 578         SelectObject( hdc, STOCK_SYSTEM_FONT );
 579         XFreeGC( display, dc->u.x.gc );
 580     }
 581
 582     if (dc->w.flags & DC_MEMORY) DeleteObject( dc->w.hFirstBitmap );
 583     if (dc->w.hClipRgn) DeleteObject( dc->w.hClipRgn );
 584     if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
 585     if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
 586
 587     return GDI_FreeObject( hdc );
 588 }
 589
 590
 591 /***********************************************************************
 592  *           ResetDC    (GDI.376)
 593  */
 594 HDC ResetDC( HDC hdc, /* DEVMODE */ void *devmode )
 595 {
 596     fprintf( stderr, "ResetDC: empty stub!\n" );
 597     return hdc;
 598 }
 599
 600
 601 /***********************************************************************
 602  *           GetDeviceCaps    (GDI.80)
 603  */
 604 int GetDeviceCaps( HDC hdc, WORD cap )
 605 {
 606     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 607     if (!dc) return 0;
 608
 609     if (cap > sizeof(DeviceCaps)-sizeof(WORD)) return 0;
 610
 611     dprintf_dc(stddeb, "GetDeviceCaps("NPFMT",%d): returning %d\n",
 612             hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
 613     return *(WORD *)(((char *)dc->w.devCaps) + cap);
 614 }
 615
 616
 617 /***********************************************************************
 618  *           SetBkColor    (GDI.1)
 619  */
 620 COLORREF SetBkColor( HDC hdc, COLORREF color )
 621 {
 622     COLORREF oldColor;
 623     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 624     if (!dc)
 625     {
 626         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 627         if (!dc) return 0x80000000;
 628         MF_MetaParam2(dc, META_SETBKCOLOR, HIWORD(color), LOWORD(color));
 629         return 0;  /* ?? */
 630     }
 631
 632     oldColor = dc->w.backgroundColor;
 633     dc->w.backgroundColor = color;
 634     dc->w.backgroundPixel = COLOR_ToPhysical( dc, color );
 635     return oldColor;
 636 }
 637
 638
 639 /***********************************************************************
 640  *           SetTextColor    (GDI.9)
 641  */
 642 COLORREF SetTextColor( HDC hdc, COLORREF color )
 643 {
 644     COLORREF oldColor;
 645     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 646     if (!dc)
 647     {
 648         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 649         if (!dc) return 0x80000000;
 650         MF_MetaParam2(dc, META_SETTEXTCOLOR, HIWORD(color), LOWORD(color));
 651         return 0;  /* ?? */
 652     }
 653
 654     oldColor = dc->w.textColor;
 655     dc->w.textColor = color;
 656     dc->w.textPixel = COLOR_ToPhysical( dc, color );
 657     return oldColor;
 658 }
 659
 660
 661 /***********************************************************************
 662  *           GetDCOrg    (GDI.79)
 663  */
 664 DWORD GetDCOrg( HDC hdc )
 665 {
 666     Window root;
 667     int x, y, w, h, border, depth;
 668
 669     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 670     if (!dc) return 0;
 671     if (dc->w.flags & DC_MEMORY) return 0;
 672     XGetGeometry( display, dc->u.x.drawable, &root,
 673                   &x, &y, &w, &h, &border, &depth );
 674     return MAKELONG( dc->w.DCOrgX + (WORD)x, dc->w.DCOrgY + (WORD)y );
 675 }
 676
 677
 678 /***********************************************************************
 679  *           SetDCOrg    (GDI.117)
 680  */
 681 DWORD SetDCOrg( HDC hdc, short x, short y )
 682 {
 683     DWORD prevOrg;
 684     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 685     if (!dc) return 0;
 686     prevOrg = dc->w.DCOrgX | (dc->w.DCOrgY << 16);
 687     dc->w.DCOrgX = x;
 688     dc->w.DCOrgY = y;
 689     return prevOrg;
 690 }