dlls/gdi32/dibdrv/dc.c

   1 /*
   2  * DIB driver initialization and DC functions.
   3  *
   4  * Copyright 2011 Huw Davies
   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 <assert.h>
  22
  23 #include "gdi_private.h"
  24 #include "dibdrv.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(dib);
  29
  30 static void calc_shift_and_len(DWORD mask, int *shift, int *len)
  31 {
  32     int s, l;
  33
  34     if(!mask)
  35     {
  36         *shift = *len = 0;
  37         return;
  38     }
  39
  40     s = 0;
  41     while ((mask & 1) == 0)
  42     {
  43         mask >>= 1;
  44         s++;
  45     }
  46     l = 0;
  47     while ((mask & 1) == 1)
  48     {
  49         mask >>= 1;
  50         l++;
  51     }
  52     *shift = s;
  53     *len = l;
  54 }
  55
  56 static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
  57 {
  58     dib->red_mask    = bit_fields[0];
  59     dib->green_mask  = bit_fields[1];
  60     dib->blue_mask   = bit_fields[2];
  61     calc_shift_and_len(dib->red_mask,   &dib->red_shift,   &dib->red_len);
  62     calc_shift_and_len(dib->green_mask, &dib->green_shift, &dib->green_len);
  63     calc_shift_and_len(dib->blue_mask,  &dib->blue_shift,  &dib->blue_len);
  64 }
  65
  66 static BOOL init_dib_info(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields,
  67                           RGBQUAD *color_table, int color_table_size, void *bits)
  68 {
  69     static const DWORD bit_fields_888[3] = {0xff0000, 0x00ff00, 0x0000ff};
  70     static const DWORD bit_fields_555[3] = {0x7c00, 0x03e0, 0x001f};
  71
  72     dib->bit_count = bi->biBitCount;
  73     dib->width     = bi->biWidth;
  74     dib->height    = bi->biHeight;
  75     dib->stride    = ((dib->width * dib->bit_count + 31) >> 3) & ~3;
  76     dib->bits      = bits;
  77
  78     if(dib->height < 0) /* top-down */
  79     {
  80         dib->height = -dib->height;
  81     }
  82     else /* bottom-up */
  83     {
  84         /* bits always points to the top-left corner and the stride is -ve */
  85         dib->bits    = (BYTE*)dib->bits + (dib->height - 1) * dib->stride;
  86         dib->stride  = -dib->stride;
  87     }
  88
  89     dib->funcs = &funcs_null;
  90
  91     switch(dib->bit_count)
  92     {
  93     case 32:
  94         if(bi->biCompression == BI_RGB)
  95             bit_fields = bit_fields_888;
  96
  97         init_bit_fields(dib, bit_fields);
  98
  99         if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
 100             dib->funcs = &funcs_8888;
 101         else
 102             dib->funcs = &funcs_32;
 103         break;
 104
 105     case 24:
 106         dib->funcs = &funcs_24;
 107         break;
 108
 109     case 16:
 110         if(bi->biCompression == BI_RGB)
 111             bit_fields = bit_fields_555;
 112
 113         init_bit_fields(dib, bit_fields);
 114
 115         if(dib->red_mask == 0x7c00 && dib->green_mask == 0x03e0 && dib->blue_mask == 0x001f)
 116             dib->funcs = &funcs_555;
 117         else
 118             dib->funcs = &funcs_16;
 119         break;
 120
 121     case 8:
 122         dib->funcs = &funcs_8;
 123         break;
 124
 125     case 4:
 126         dib->funcs = &funcs_4;
 127         break;
 128
 129     default:
 130         TRACE("bpp %d not supported, will forward to graphics driver.\n", dib->bit_count);
 131         return FALSE;
 132     }
 133
 134     if(color_table)
 135     {
 136         dib->color_table = HeapAlloc(GetProcessHeap(), 0, color_table_size * sizeof(dib->color_table[0]));
 137         if(!dib->color_table) return FALSE;
 138         dib->color_table_size = color_table_size;
 139         memcpy(dib->color_table, color_table, color_table_size * sizeof(color_table[0]));
 140     }
 141     else
 142     {
 143         dib->color_table = NULL;
 144         dib->color_table_size = 0;
 145     }
 146
 147     return TRUE;
 148 }
 149
 150 BOOL init_dib_info_from_packed(dib_info *dib, const BITMAPINFOHEADER *bi, WORD usage, HPALETTE palette)
 151 {
 152     DWORD *masks = NULL;
 153     RGBQUAD *color_table = NULL, pal_table[256];
 154     BYTE *ptr = (BYTE*)bi + bi->biSize;
 155     int num_colors = bi->biClrUsed;
 156
 157     if(bi->biCompression == BI_BITFIELDS)
 158     {
 159         masks = (DWORD *)ptr;
 160         ptr += 3 * sizeof(DWORD);
 161     }
 162
 163     if(!num_colors && bi->biBitCount <= 8) num_colors = 1 << bi->biBitCount;
 164     if(num_colors)
 165     {
 166         if(usage == DIB_PAL_COLORS)
 167         {
 168             PALETTEENTRY entries[256];
 169             const WORD *index = (const WORD*) ptr;
 170             UINT i, count = GetPaletteEntries( palette, 0, num_colors, entries );
 171             for (i = 0; i < num_colors; i++, index++)
 172             {
 173                 PALETTEENTRY *entry = &entries[*index % count];
 174                 pal_table[i].rgbRed      = entry->peRed;
 175                 pal_table[i].rgbGreen    = entry->peGreen;
 176                 pal_table[i].rgbBlue     = entry->peBlue;
 177                 pal_table[i].rgbReserved = 0;
 178             }
 179             color_table = pal_table;
 180             ptr += num_colors * sizeof(WORD);
 181         }
 182         else
 183         {
 184             color_table = (RGBQUAD*)ptr;
 185             ptr += num_colors * sizeof(*color_table);
 186         }
 187     }
 188
 189     return init_dib_info(dib, bi, masks, color_table, num_colors, ptr);
 190 }
 191
 192 static void clear_dib_info(dib_info *dib)
 193 {
 194     dib->color_table = NULL;
 195     dib->bits = NULL;
 196 }
 197
 198 /**********************************************************************
 199  *      free_dib_info
 200  *
 201  * Free the resources associated with a dib and optionally the bits
 202  */
 203 void free_dib_info(dib_info *dib, BOOL free_bits)
 204 {
 205     HeapFree(GetProcessHeap(), 0, dib->color_table);
 206     dib->color_table = NULL;
 207     if(free_bits)
 208     {
 209         HeapFree(GetProcessHeap(), 0, dib->bits);
 210         dib->bits = NULL;
 211     }
 212 }
 213
 214 void copy_dib_color_info(dib_info *dst, const dib_info *src)
 215 {
 216     dst->bit_count        = src->bit_count;
 217     dst->red_mask         = src->red_mask;
 218     dst->green_mask       = src->green_mask;
 219     dst->blue_mask        = src->blue_mask;
 220     dst->red_len          = src->red_len;
 221     dst->green_len        = src->green_len;
 222     dst->blue_len         = src->blue_len;
 223     dst->red_shift        = src->red_shift;
 224     dst->green_shift      = src->green_shift;
 225     dst->blue_shift       = src->blue_shift;
 226     dst->funcs            = src->funcs;
 227     dst->color_table_size = src->color_table_size;
 228     dst->color_table      = NULL;
 229     if(dst->color_table_size)
 230     {
 231         int size = dst->color_table_size * sizeof(dst->color_table[0]);
 232         dst->color_table = HeapAlloc(GetProcessHeap(), 0, size);
 233         memcpy(dst->color_table, src->color_table, size);
 234     }
 235 }
 236
 237 /**************************************************************
 238  *            convert_dib
 239  *
 240  * Converts src into the format specified in dst.
 241  *
 242  * FIXME: At the moment this always creates a top-down dib,
 243  * do we want to give the option of bottom-up?
 244  */
 245 BOOL convert_dib(dib_info *dst, const dib_info *src)
 246 {
 247     BOOL ret;
 248     RECT src_rect;
 249
 250     dst->height = src->height;
 251     dst->width = src->width;
 252     dst->stride = ((dst->width * dst->bit_count + 31) >> 3) & ~3;
 253     dst->bits = HeapAlloc(GetProcessHeap(), 0, dst->height * dst->stride);
 254
 255     src_rect.left = src_rect.top = 0;
 256     src_rect.right = src->width;
 257     src_rect.bottom = src->height;
 258
 259     ret = dst->funcs->convert_to(dst, src, &src_rect);
 260
 261     if(!ret) free_dib_info(dst, TRUE);
 262     return ret;
 263 }
 264
 265 /***********************************************************************
 266  *           dibdrv_DeleteDC
 267  */
 268 static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
 269 {
 270     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 271     TRACE("(%p)\n", dev);
 272     DeleteObject(pdev->clip);
 273     free_pattern_brush(pdev);
 274     free_dib_info(&pdev->dib, FALSE);
 275     return 0;
 276 }
 277
 278 /***********************************************************************
 279  *           dibdrv_SelectBitmap
 280  */
 281 static HBITMAP CDECL dibdrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
 282 {
 283     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSelectBitmap );
 284     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 285     BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
 286     TRACE("(%p, %p)\n", dev, bitmap);
 287
 288     if (!bmp) return 0;
 289     assert(bmp->dib);
 290
 291     pdev->clip = CreateRectRgn(0, 0, 0, 0);
 292     pdev->defer = 0;
 293
 294     clear_dib_info(&pdev->dib);
 295     clear_dib_info(&pdev->brush_dib);
 296     pdev->brush_and_bits = pdev->brush_xor_bits = NULL;
 297
 298     if(!init_dib_info(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields,
 299                       bmp->color_table, bmp->nb_colors, bmp->dib->dsBm.bmBits))
 300         pdev->defer |= DEFER_FORMAT;
 301
 302     GDI_ReleaseObj( bitmap );
 303
 304     return next->funcs->pSelectBitmap( next, bitmap );
 305 }
 306
 307 /***********************************************************************
 308  *           dibdrv_SetBkColor
 309  */
 310 static COLORREF CDECL dibdrv_SetBkColor( PHYSDEV dev, COLORREF color )
 311 {
 312     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetBkColor );
 313     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 314
 315     pdev->bkgnd_color = pdev->dib.funcs->colorref_to_pixel( &pdev->dib, color );
 316
 317     if( GetBkMode(dev->hdc) == OPAQUE )
 318         calc_and_xor_masks( GetROP2(dev->hdc), pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor );
 319     else
 320     {
 321         pdev->bkgnd_and = ~0u;
 322         pdev->bkgnd_xor = 0;
 323     }
 324
 325     return next->funcs->pSetBkColor( next, color );
 326 }
 327
 328 /***********************************************************************
 329  *           dibdrv_SetBkMode
 330  */
 331 static INT CDECL dibdrv_SetBkMode( PHYSDEV dev, INT mode )
 332 {
 333     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetBkMode );
 334     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 335
 336     if( mode == OPAQUE )
 337         calc_and_xor_masks( GetROP2(dev->hdc), pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor );
 338     else
 339     {
 340         pdev->bkgnd_and = ~0u;
 341         pdev->bkgnd_xor = 0;
 342     }
 343
 344     return next->funcs->pSetBkMode( next, mode );
 345 }
 346
 347 /***********************************************************************
 348  *           dibdrv_SetDeviceClipping
 349  */
 350 static void CDECL dibdrv_SetDeviceClipping( PHYSDEV dev, HRGN vis_rgn, HRGN clip_rgn )
 351 {
 352     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetDeviceClipping );
 353     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 354     TRACE("(%p, %p, %p)\n", dev, vis_rgn, clip_rgn);
 355
 356     CombineRgn( pdev->clip, vis_rgn, clip_rgn, clip_rgn ? RGN_AND : RGN_COPY );
 357     return next->funcs->pSetDeviceClipping( next, vis_rgn, clip_rgn);
 358 }
 359
 360 static void update_masks( dibdrv_physdev *pdev, INT rop )
 361 {
 362     calc_and_xor_masks( rop, pdev->pen_color, &pdev->pen_and, &pdev->pen_xor );
 363     update_brush_rop( pdev, rop );
 364     if( GetBkMode( pdev->dev.hdc ) == OPAQUE )
 365         calc_and_xor_masks( rop, pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor );
 366 }
 367
 368 /***********************************************************************
 369  *           dibdrv_SetDIBColorTable
 370  */
 371 static UINT CDECL dibdrv_SetDIBColorTable( PHYSDEV dev, UINT pos, UINT count, const RGBQUAD *colors )
 372 {
 373     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetDIBColorTable );
 374     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 375     TRACE("(%p, %d, %d, %p)\n", dev, pos, count, colors);
 376
 377     if( pdev->dib.color_table && pos < pdev->dib.color_table_size )
 378     {
 379         if( pos + count > pdev->dib.color_table_size ) count = pdev->dib.color_table_size - pos;
 380         memcpy( pdev->dib.color_table + pos, colors, count * sizeof(RGBQUAD) );
 381
 382         pdev->pen_color   = pdev->dib.funcs->colorref_to_pixel( &pdev->dib, pdev->pen_colorref );
 383         pdev->brush_color = pdev->dib.funcs->colorref_to_pixel( &pdev->dib, pdev->brush_colorref );
 384         pdev->bkgnd_color = pdev->dib.funcs->colorref_to_pixel( &pdev->dib, GetBkColor( dev->hdc ) );
 385
 386         update_masks( pdev, GetROP2( dev->hdc ) );
 387     }
 388     return next->funcs->pSetDIBColorTable( next, pos, count, colors );
 389 }
 390
 391 /***********************************************************************
 392  *           dibdrv_SetROP2
 393  */
 394 static INT CDECL dibdrv_SetROP2( PHYSDEV dev, INT rop )
 395 {
 396     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetROP2 );
 397     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 398
 399     update_masks( pdev, rop );
 400
 401     return next->funcs->pSetROP2( next, rop );
 402 }
 403
 404 const DC_FUNCTIONS dib_driver =
 405 {
 406     NULL,                               /* pAbortDoc */
 407     NULL,                               /* pAbortPath */
 408     NULL,                               /* pAlphaBlend */
 409     NULL,                               /* pAngleArc */
 410     NULL,                               /* pArc */
 411     NULL,                               /* pArcTo */
 412     NULL,                               /* pBeginPath */
 413     NULL,                               /* pChoosePixelFormat */
 414     NULL,                               /* pChord */
 415     NULL,                               /* pCloseFigure */
 416     NULL,                               /* pCreateBitmap */
 417     NULL,                               /* pCreateDC */
 418     NULL,                               /* pCreateDIBSection */
 419     NULL,                               /* pDeleteBitmap */
 420     dibdrv_DeleteDC,                    /* pDeleteDC */
 421     NULL,                               /* pDeleteObject */
 422     NULL,                               /* pDescribePixelFormat */
 423     NULL,                               /* pDeviceCapabilities */
 424     NULL,                               /* pEllipse */
 425     NULL,                               /* pEndDoc */
 426     NULL,                               /* pEndPage */
 427     NULL,                               /* pEndPath */
 428     NULL,                               /* pEnumDeviceFonts */
 429     NULL,                               /* pEnumICMProfiles */
 430     NULL,                               /* pExcludeClipRect */
 431     NULL,                               /* pExtDeviceMode */
 432     NULL,                               /* pExtEscape */
 433     NULL,                               /* pExtFloodFill */
 434     NULL,                               /* pExtSelectClipRgn */
 435     NULL,                               /* pExtTextOut */
 436     NULL,                               /* pFillPath */
 437     NULL,                               /* pFillRgn */
 438     NULL,                               /* pFlattenPath */
 439     NULL,                               /* pFrameRgn */
 440     NULL,                               /* pGdiComment */
 441     NULL,                               /* pGetBitmapBits */
 442     NULL,                               /* pGetCharWidth */
 443     NULL,                               /* pGetDIBits */
 444     NULL,                               /* pGetDeviceCaps */
 445     NULL,                               /* pGetDeviceGammaRamp */
 446     NULL,                               /* pGetICMProfile */
 447     NULL,                               /* pGetNearestColor */
 448     NULL,                               /* pGetPixel */
 449     NULL,                               /* pGetPixelFormat */
 450     NULL,                               /* pGetSystemPaletteEntries */
 451     NULL,                               /* pGetTextExtentExPoint */
 452     NULL,                               /* pGetTextMetrics */
 453     NULL,                               /* pIntersectClipRect */
 454     NULL,                               /* pInvertRgn */
 455     dibdrv_LineTo,                      /* pLineTo */
 456     NULL,                               /* pModifyWorldTransform */
 457     NULL,                               /* pMoveTo */
 458     NULL,                               /* pOffsetClipRgn */
 459     NULL,                               /* pOffsetViewportOrg */
 460     NULL,                               /* pOffsetWindowOrg */
 461     dibdrv_PaintRgn,                    /* pPaintRgn */
 462     dibdrv_PatBlt,                      /* pPatBlt */
 463     NULL,                               /* pPie */
 464     NULL,                               /* pPolyBezier */
 465     NULL,                               /* pPolyBezierTo */
 466     NULL,                               /* pPolyDraw */
 467     NULL,                               /* pPolyPolygon */
 468     NULL,                               /* pPolyPolyline */
 469     NULL,                               /* pPolygon */
 470     NULL,                               /* pPolyline */
 471     NULL,                               /* pPolylineTo */
 472     NULL,                               /* pRealizeDefaultPalette */
 473     NULL,                               /* pRealizePalette */
 474     dibdrv_Rectangle,                   /* pRectangle */
 475     NULL,                               /* pResetDC */
 476     NULL,                               /* pRestoreDC */
 477     NULL,                               /* pRoundRect */
 478     NULL,                               /* pSaveDC */
 479     NULL,                               /* pScaleViewportExt */
 480     NULL,                               /* pScaleWindowExt */
 481     dibdrv_SelectBitmap,                /* pSelectBitmap */
 482     dibdrv_SelectBrush,                 /* pSelectBrush */
 483     NULL,                               /* pSelectClipPath */
 484     NULL,                               /* pSelectFont */
 485     NULL,                               /* pSelectPalette */
 486     dibdrv_SelectPen,                   /* pSelectPen */
 487     NULL,                               /* pSetArcDirection */
 488     NULL,                               /* pSetBitmapBits */
 489     dibdrv_SetBkColor,                  /* pSetBkColor */
 490     dibdrv_SetBkMode,                   /* pSetBkMode */
 491     dibdrv_SetDCBrushColor,             /* pSetDCBrushColor */
 492     dibdrv_SetDCPenColor,               /* pSetDCPenColor */
 493     dibdrv_SetDIBColorTable,            /* pSetDIBColorTable */
 494     NULL,                               /* pSetDIBits */
 495     NULL,                               /* pSetDIBitsToDevice */
 496     dibdrv_SetDeviceClipping,           /* pSetDeviceClipping */
 497     NULL,                               /* pSetDeviceGammaRamp */
 498     NULL,                               /* pSetLayout */
 499     NULL,                               /* pSetMapMode */
 500     NULL,                               /* pSetMapperFlags */
 501     NULL,                               /* pSetPixel */
 502     NULL,                               /* pSetPixelFormat */
 503     NULL,                               /* pSetPolyFillMode */
 504     dibdrv_SetROP2,                     /* pSetROP2 */
 505     NULL,                               /* pSetRelAbs */
 506     NULL,                               /* pSetStretchBltMode */
 507     NULL,                               /* pSetTextAlign */
 508     NULL,                               /* pSetTextCharacterExtra */
 509     NULL,                               /* pSetTextColor */
 510     NULL,                               /* pSetTextJustification */
 511     NULL,                               /* pSetViewportExt */
 512     NULL,                               /* pSetViewportOrg */
 513     NULL,                               /* pSetWindowExt */
 514     NULL,                               /* pSetWindowOrg */
 515     NULL,                               /* pSetWorldTransform */
 516     NULL,                               /* pStartDoc */
 517     NULL,                               /* pStartPage */
 518     NULL,                               /* pStretchBlt */
 519     NULL,                               /* pStretchDIBits */
 520     NULL,                               /* pStrokeAndFillPath */
 521     NULL,                               /* pStrokePath */
 522     NULL,                               /* pSwapBuffers */
 523     NULL,                               /* pUnrealizePalette */
 524     NULL,                               /* pWidenPath */
 525     NULL,                               /* pwglCopyContext */
 526     NULL,                               /* pwglCreateContext */
 527     NULL,                               /* pwglCreateContextAttribsARB */
 528     NULL,                               /* pwglDeleteContext */
 529     NULL,                               /* pwglGetProcAddress */
 530     NULL,                               /* pwglGetPbufferDCARB */
 531     NULL,                               /* pwglMakeCurrent */
 532     NULL,                               /* pwglMakeContextCurrentARB */
 533     NULL,                               /* pwglSetPixelFormatWINE */
 534     NULL,                               /* pwglShareLists */
 535     NULL,                               /* pwglUseFontBitmapsA */
 536     NULL                                /* pwglUseFontBitmapsW */
 537 };