git.oblomov.eu Git - wine/blob - 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 /***********************************************************************
  31  *           dibdrv_DeleteDC
  32  */
  33 static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
  34 {
  35     TRACE("(%p)\n", dev);
  36     return 0;
  37 }
  38
  39 static void calc_shift_and_len(DWORD mask, int *shift, int *len)
  40 {
  41     int s, l;
  42
  43     s = 0;
  44     while ((mask & 1) == 0)
  45     {
  46         mask >>= 1;
  47         s++;
  48     }
  49     l = 0;
  50     while ((mask & 1) == 1)
  51     {
  52         mask >>= 1;
  53         l++;
  54     }
  55     *shift = s;
  56     *len = l;
  57 }
  58
  59 static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
  60 {
  61     dib->red_mask    = bit_fields[0];
  62     dib->green_mask  = bit_fields[1];
  63     dib->blue_mask   = bit_fields[2];
  64     calc_shift_and_len(dib->red_mask,   &dib->red_shift,   &dib->red_len);
  65     calc_shift_and_len(dib->green_mask, &dib->green_shift, &dib->green_len);
  66     calc_shift_and_len(dib->blue_mask,  &dib->blue_shift,  &dib->blue_len);
  67 }
  68
  69 static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
  70 {
  71     dib->bit_count = bi->biBitCount;
  72     dib->width     = bi->biWidth;
  73     dib->height    = bi->biHeight;
  74     dib->stride    = ((dib->width * dib->bit_count + 31) >> 3) & ~3;
  75     dib->bits      = bits;
  76
  77     if(dib->height < 0) /* top-down */
  78     {
  79         dib->height = -dib->height;
  80     }
  81     else /* bottom-up */
  82     {
  83         /* bits always points to the top-left corner and the stride is -ve */
  84         dib->bits    = (BYTE*)dib->bits + (dib->height - 1) * dib->stride;
  85         dib->stride  = -dib->stride;
  86     }
  87
  88     dib->funcs = &funcs_null;
  89
  90     switch(dib->bit_count)
  91     {
  92     case 32:
  93         init_bit_fields(dib, bit_fields);
  94         if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
  95             dib->funcs = &funcs_8888;
  96         else
  97             dib->funcs = &funcs_32;
  98         break;
  99
 100     default:
 101         TRACE("bpp %d not supported, will forward to graphics driver.\n", dib->bit_count);
 102         return FALSE;
 103     }
 104
 105     return TRUE;
 106 }
 107
 108 /***********************************************************************
 109  *           dibdrv_SelectBitmap
 110  */
 111 static HBITMAP CDECL dibdrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
 112 {
 113     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSelectBitmap );
 114     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 115     BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
 116     TRACE("(%p, %p)\n", dev, bitmap);
 117
 118     if (!bmp) return 0;
 119     assert(bmp->dib);
 120
 121     pdev->defer = 0;
 122
 123     if(!init_dib(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields, bmp->dib->dsBm.bmBits))
 124         pdev->defer |= DEFER_FORMAT;
 125
 126     GDI_ReleaseObj( bitmap );
 127
 128     return next->funcs->pSelectBitmap( next, bitmap );
 129 }
 130
 131 const DC_FUNCTIONS dib_driver =
 132 {
 133     NULL,                               /* pAbortDoc */
 134     NULL,                               /* pAbortPath */
 135     NULL,                               /* pAlphaBlend */
 136     NULL,                               /* pAngleArc */
 137     NULL,                               /* pArc */
 138     NULL,                               /* pArcTo */
 139     NULL,                               /* pBeginPath */
 140     NULL,                               /* pChoosePixelFormat */
 141     NULL,                               /* pChord */
 142     NULL,                               /* pCloseFigure */
 143     NULL,                               /* pCreateBitmap */
 144     NULL,                               /* pCreateDC */
 145     NULL,                               /* pCreateDIBSection */
 146     NULL,                               /* pDeleteBitmap */
 147     dibdrv_DeleteDC,                    /* pDeleteDC */
 148     NULL,                               /* pDeleteObject */
 149     NULL,                               /* pDescribePixelFormat */
 150     NULL,                               /* pDeviceCapabilities */
 151     NULL,                               /* pEllipse */
 152     NULL,                               /* pEndDoc */
 153     NULL,                               /* pEndPage */
 154     NULL,                               /* pEndPath */
 155     NULL,                               /* pEnumDeviceFonts */
 156     NULL,                               /* pEnumICMProfiles */
 157     NULL,                               /* pExcludeClipRect */
 158     NULL,                               /* pExtDeviceMode */
 159     NULL,                               /* pExtEscape */
 160     NULL,                               /* pExtFloodFill */
 161     NULL,                               /* pExtSelectClipRgn */
 162     NULL,                               /* pExtTextOut */
 163     NULL,                               /* pFillPath */
 164     NULL,                               /* pFillRgn */
 165     NULL,                               /* pFlattenPath */
 166     NULL,                               /* pFrameRgn */
 167     NULL,                               /* pGdiComment */
 168     NULL,                               /* pGetBitmapBits */
 169     NULL,                               /* pGetCharWidth */
 170     NULL,                               /* pGetDIBits */
 171     NULL,                               /* pGetDeviceCaps */
 172     NULL,                               /* pGetDeviceGammaRamp */
 173     NULL,                               /* pGetICMProfile */
 174     NULL,                               /* pGetNearestColor */
 175     NULL,                               /* pGetPixel */
 176     NULL,                               /* pGetPixelFormat */
 177     NULL,                               /* pGetSystemPaletteEntries */
 178     NULL,                               /* pGetTextExtentExPoint */
 179     NULL,                               /* pGetTextMetrics */
 180     NULL,                               /* pIntersectClipRect */
 181     NULL,                               /* pInvertRgn */
 182     NULL,                               /* pLineTo */
 183     NULL,                               /* pModifyWorldTransform */
 184     NULL,                               /* pMoveTo */
 185     NULL,                               /* pOffsetClipRgn */
 186     NULL,                               /* pOffsetViewportOrg */
 187     NULL,                               /* pOffsetWindowOrg */
 188     NULL,                               /* pPaintRgn */
 189     NULL,                               /* pPatBlt */
 190     NULL,                               /* pPie */
 191     NULL,                               /* pPolyBezier */
 192     NULL,                               /* pPolyBezierTo */
 193     NULL,                               /* pPolyDraw */
 194     NULL,                               /* pPolyPolygon */
 195     NULL,                               /* pPolyPolyline */
 196     NULL,                               /* pPolygon */
 197     NULL,                               /* pPolyline */
 198     NULL,                               /* pPolylineTo */
 199     NULL,                               /* pRealizeDefaultPalette */
 200     NULL,                               /* pRealizePalette */
 201     NULL,                               /* pRectangle */
 202     NULL,                               /* pResetDC */
 203     NULL,                               /* pRestoreDC */
 204     NULL,                               /* pRoundRect */
 205     NULL,                               /* pSaveDC */
 206     NULL,                               /* pScaleViewportExt */
 207     NULL,                               /* pScaleWindowExt */
 208     dibdrv_SelectBitmap,                /* pSelectBitmap */
 209     NULL,                               /* pSelectBrush */
 210     NULL,                               /* pSelectClipPath */
 211     NULL,                               /* pSelectFont */
 212     NULL,                               /* pSelectPalette */
 213     dibdrv_SelectPen,                   /* pSelectPen */
 214     NULL,                               /* pSetArcDirection */
 215     NULL,                               /* pSetBitmapBits */
 216     NULL,                               /* pSetBkColor */
 217     NULL,                               /* pSetBkMode */
 218     NULL,                               /* pSetDCBrushColor */
 219     NULL,                               /* pSetDCPenColor */
 220     NULL,                               /* pSetDIBColorTable */
 221     NULL,                               /* pSetDIBits */
 222     NULL,                               /* pSetDIBitsToDevice */
 223     NULL,                               /* pSetDeviceClipping */
 224     NULL,                               /* pSetDeviceGammaRamp */
 225     NULL,                               /* pSetLayout */
 226     NULL,                               /* pSetMapMode */
 227     NULL,                               /* pSetMapperFlags */
 228     NULL,                               /* pSetPixel */
 229     NULL,                               /* pSetPixelFormat */
 230     NULL,                               /* pSetPolyFillMode */
 231     NULL,                               /* pSetROP2 */
 232     NULL,                               /* pSetRelAbs */
 233     NULL,                               /* pSetStretchBltMode */
 234     NULL,                               /* pSetTextAlign */
 235     NULL,                               /* pSetTextCharacterExtra */
 236     NULL,                               /* pSetTextColor */
 237     NULL,                               /* pSetTextJustification */
 238     NULL,                               /* pSetViewportExt */
 239     NULL,                               /* pSetViewportOrg */
 240     NULL,                               /* pSetWindowExt */
 241     NULL,                               /* pSetWindowOrg */
 242     NULL,                               /* pSetWorldTransform */
 243     NULL,                               /* pStartDoc */
 244     NULL,                               /* pStartPage */
 245     NULL,                               /* pStretchBlt */
 246     NULL,                               /* pStretchDIBits */
 247     NULL,                               /* pStrokeAndFillPath */
 248     NULL,                               /* pStrokePath */
 249     NULL,                               /* pSwapBuffers */
 250     NULL,                               /* pUnrealizePalette */
 251     NULL,                               /* pWidenPath */
 252     NULL,                               /* pwglCopyContext */
 253     NULL,                               /* pwglCreateContext */
 254     NULL,                               /* pwglCreateContextAttribsARB */
 255     NULL,                               /* pwglDeleteContext */
 256     NULL,                               /* pwglGetProcAddress */
 257     NULL,                               /* pwglGetPbufferDCARB */
 258     NULL,                               /* pwglMakeCurrent */
 259     NULL,                               /* pwglMakeContextCurrentARB */
 260     NULL,                               /* pwglSetPixelFormatWINE */
 261     NULL,                               /* pwglShareLists */
 262     NULL,                               /* pwglUseFontBitmapsA */
 263     NULL                                /* pwglUseFontBitmapsW */
 264 };