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